southern regional power committee of the 33rd meeting of srpc held on 17.02.2018 page 1 contents 1....
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Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 1
Contents 1. INTRODUCTION ............................................................................................................................................... 3
2. CONFIRMATION OF THE MINUTES OF THE 32nd MEETING OF SRPC ............................................................. 7
3. MEMBERSHIP TO RPC ..................................................................................................................................... 7
4. COAL ISSUES.................................................................................................................................................... 8
5. 400 kV NPS – NELLORE TRANSMISSION LINES LOADING ............................................................................. 15
6. CYBER SECURITY PREPAREDNESS MONITORING .......................................................................................... 16
7. PREPARATION FOR MEETING REVISED ENVIRONMENT NORMS AS PER ENVIRONMENT
(PROTECTION) AMENDMENT RULES, 2015 .................................................................................................. 17
8. MOP COMMITTEE ON “NHPC TO BECOME GRID STABILISER USING HYDRO POWER” ................................ 19
9. OPTIMUM HARNESSING OF RE IN SOUTHERN REGION ............................................................................... 20
10. COMPLIANCE OF CEA REGULATIONS FOR GRID CONNECTIVITY OF RENEWABLE ENERGY
SOURCES ....................................................................................................................................................... 23
11. TERMS OF REFERENCE FOR RENEWABLE INTEGRATION – TASK FORCE ...................................................... 24
12. MONITORING OF SCHEMES FUNDED FROM PSDF ....................................................................................... 24
13. ROADMAP TO OPERATIONALISE RESERVES IN THE COUNTRY ..................................................................... 25
14. TTC/ATC ........................................................................................................................................................ 28
15 STATUS OF DC IN ISGS .................................................................................................................................. 32
16 FREQUENT TRIPPING OF 765 KV AND 400 KV LINES AND SUSTAINED OPERATION OF ELEMENTS
UNDER HIGH VOLTAGE ................................................................................................................................. 34
17 ISSUES IN RESPECT OF NPCIL ........................................................................................................................ 36
18 UPCOMING TRANSMISSION SYSTEM ........................................................................................................... 42
19 UPCOMING RENEWABLE PROJECTS AND THEIR INTEGRATION WITH TRANSMISSION NETWORK ............. 54
20 NEW PROJECTS OF NTPC, NLC, NPCIL, JOINT VENTURE & UMPP ................................................................ 57
21 NEW PROJECTS OF STATE SECTOR & IPP ...................................................................................................... 59
22 REVIEW OF ULDC / SCADA/COMMUNICATION ............................................................................................ 60
23 URTDSM (PMU) PROJECT IN SOUTHERN REGION ........................................................................................ 63
24 EMERGENCY RESTORATION SYSTEM (ERS) .................................................................................................. 63
25 PROGRESS OF BUS/LINE REACTORS TO BE COMMISSIONED IN SR .............................................................. 64
26 NON-AVAILING OF OCC APPROVED SHUTDOWN ......................................................................................... 67
27 STATUS OF PHASE I AND PHASE II OF PROTECTION AUDIT RECOMMENDATIONS ...................................... 69
28 CERTIFICATION OF AVAILABILITY OF TRANSMISSION SYSTEM OF INTER-STATE AND RPC
CERTIFIED FEEDERS ....................................................................................................................................... 70
29 IEGC RELATED ISSUES REQUIRING ATTENTION/ACTION .............................................................................. 70
30 IMPLEMENTATION OF PROTECTION SUITE / PROTECTION MANAGEMENT SYSTEM (PMS) FOR
SOUTHERN REGION ...................................................................................................................................... 85
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 2
31 COMPLIANCE STATUS OF NEW PROTECTION AUDIT RECOMMENDATIONS ................................................ 85
32 AUTO-RECLOSURE IMPLEMENTATION ON ALL 220 KV & ABOVE TRANSMISSION LINES OF
SOUTHERN REGION ...................................................................................................................................... 86
33 PATROLLING / MAINTENANCE OF CRITICAL LINES AND SUBSTATIONS ....................................................... 87
34 COMPLIANCE OF ORDER OF HON’BLE CERC IN PETITION NO. 420/MP/2014 – IN RESPECT OF
LVRT AND OTHER PROVISIONS OF CEA/CERC REGULATIONS ...................................................................... 87
35 REVIEW MEETING ON COMPLIANCE OF PCSC RECOMMENDATIONS .......................................................... 89
36 COMMERCIAL COMMITTEE ISSUES .............................................................................................................. 92
37 AUGMENTATION OF TALCHER-II TRANSMISSION SYSTEM........................................................................... 96
38 GRID OPERATION .......................................................................................................................................... 97
39 REIMBURSEMENT OF SRPC EXPENDITURE ................................................................................................. 102
40 STATE-WISE ALLOCATION OF 540 MW POWER FROM RGPPL TO RAILWAYS ............................................ 102
41 REPORT OF POLLUTION MAPPING OF SR BY CPRI ...................................................................................... 103
42 OPERATION OF HYDRO POWER PROJECTS IN PEAKING MODE .................................................................. 103
43 DEFAULT IN PAYMENT OF OUTSTANDING DUES BY BENEFICIARIES .......................................................... 104
44 INCLUSION OF DRAWAL OF MAHE IN REA ................................................................................................. 104
45 UNREQUISTIONED SURPLUS (URS) ............................................................................................................. 105
46 RSD & TECHNICAL MINIMUM ..................................................................................................................... 106
47 NON-ADHERENCE TO THE MAINTENANCE SCHEDULE SPECIFIC CASE OF OVERHAULING OF
TALCHER STAGE II UNITS ............................................................................................................................ 106
48 URS ALLOCATION TO NON-BENEFICIARY ................................................................................................... 107
49 OUTAGE CATEGORISATION UNDER DEEMED AVAILABILITY ...................................................................... 107
50 TECHNICAL COMMITTEE FOR IMPLEMENTATION OF FRAMEWORK ON RENEWABLE AT STATE
LEVEL -FOR .................................................................................................................................................. 107
51 TECHNICAL COMMITTEE CONSTITUTED BY CEA ......................................................................................... 108
52 COMMITTEE FOR PROPOSING METHODS FOR INTEGRATED OPERATIONS OF RESOURCES IN A
RIVER IN THE COUNTRY .............................................................................................................................. 110
53 INCLUSION OF DRAWAL OF KARAIKAL REGION OF UT OF PUDUCHERRY IN REA ...................................... 110
54 HIGH DECLARATION OF DC FROM NTPC KUDGI THERMAL POWER PLANT FROM 01.01.2018
ONWARDS ................................................................................................................................................... 111
55 ROSTER FOR HOSTING THE SRPC MEETINGS .............................................................................................. 113
56 VOTE OF THANKS ........................................................................................................................................ 114
57 DATE & VENUE OF THE NEXT MEETING OF SRPC ....................................................................................... 114
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 3
SOUTHERN REGIONAL POWER COMMITTEE
BENGALURU
MINUTES OF THE 33rd
MEETING OF SRPC HELD ON 17th
FEBRUARY 2018 AT
PUDUCHERRY
1. INTRODUCTION
1.1 The 33rd
Meeting of the Southern Regional Power Committee (SRPC) was held on 17th
February 2018 at Puducherry. The list of participants is given at Annexure-I.
1.2 NLCIL/NTPL extended a hearty welcome to all delegates to the 33rd
SRPC Meeting.
NLCIL/NTPL also thanked Southern Regional Power Committee for bestowing this
opportunity to host the 32nd
TCC & 33rd
SRPC Meetings.
1.3 Shri V Thangapandian, Director (Power), NLCIL on behalf of NLCIL & NTPL
welcomed eminent & distinguished dignitaries to the SRPC Meeting. He stated that
SRPC Meetings were highly constructive and beneficial. He thanked Chairperson, SRPC
& Member Secretary for providing this opportunity to NLCIL/NTPL to host the
Meeting. He specially greeted Shri D Prabhakar Rao and stated that it was indeed a great
honour to have him as Chairperson of SRPC. He informed the gathering that Shri D
Prabhakar Rao was the person who had taken power deficit as a challenge and
transformed Telangana into a power surplus state, while ensuring 24 hours of power
supply to farmers and rural areas. This was indeed a marvelous achievement for
Telangana in such a short duration of time and a lot could be learnt from him. He also
stated that SRPC under the able guidance of Shri S R Bhat, Member Secretary was
achieving a number of milestones. He welcomed Shri Dinesh Paruchuri, JMD,
APTRANSCO, Shri T H M Kumar, MD, PCKL, Shri N S Pillai, CMD, KSEBL, Shri R
P Sasmal, Director (O), PGCIL, Shri Satish Jindal, COO, JSWEL, Shri G Narsing Rao,
Director, TSTRANSCO, Shri S. Shanmugam, MD TANTRANSCO, Shri T Senthilvelan,
Director (Transmission Projects), TANTRANSCO, Ms A Axilium Jayamary, Director
(O), TANTRANSCO, Ms M A Helen, Director (D), TANGEDCO, Shri S M Zafrulla,
MD, CEPL , Shri G. Anbunesan, GM, SRLDC, CEOs/Directors, Members from NTPC,
NTECL, IPPs, Members of Transmission & Distribution Companies and distinguished
guests to the Meeting. Director (Power), NLCIL mentioned that management of SR
power system by the constituents was highly laudable. He also stated that the
functioning of SRPC is simply outstanding.
Director (Power) briefed about NLCIL and its various activities. NLCIL had
commissioned 2 x 250 MW lignite fired CFBC boilers at Neyveli (TS II Expansion)
which is first of its kind in India. With 140 MW of solar and 51 MW of wind, NLCIL
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 4
had also ventured into renewables. NLCIL are also implementing 995 MW of solar plant
at various sites in TN. NLC is also constructing a replacement plant (NNTPS) of 2 x 500
MW in place of TS-I (600 MW) which is expected during June/July 2018. Construction
activities of this plant are nearing completion while commissioning activities had picked
up. With active help of SRPC, SRLDC & TANGEDCO, NNTPS was able to obtain start
up power in time for this plant and he thanked all for the same. NLCIL is also in the
process of implementing a 2 x 660 MW plant at Neyveli and 3 x 800 MW coal based
plant at Talabira (Odisha) which is linked with 20 MTPA mine at Talabira. The fuel is
likely to be cheap since it is a linked coal mine. Odisha Government has accorded
clearance for land, water etc, MOEF clearance had been received and pre project
activities were progressing well. During FY 2017-18 (till Jan-2018) NLCIL had
generated 17,184 MU and exported 14,422 MU of energy against generation of 17,251
MU and export of 14,503 MU during the same period in FY 2016-17. During the period
till Jan-18 in FY 17-18, NTPL had generated 4,428 MU and exported 4,108 MU. PLF of
NTPL was around 60 %, which was mainly due to coal availability issues during
monsoon. ECL/MCL had provided more than the linkage quantity for which NTPL was
thankful. The issue regarding operational flexibility and compliance of revised Technical
Minimum as per CERC Regulations was being faced by NLCIL. Hence,to overcome that
NLCIL had resorted to URS power trading. He hoped that the Meeting would pave way
for addressing various pending issues and also look into the trading/technical minimum
related issues. He once again thanked all Members for their gracious presence and said
that the forum would benefit from their valuable inputs.
1.4 NLCIL presented a short film in which the following was highlighted:
Twin objective of mining and power generation which produces economic power
to all.
A Navratna CPSU under Ministry of Coal and pioneer provider of India‟s energy
security.
28.5 MTPA lignite mine at Neyveli & 2.1 MTPA lignite mine at Barsingsar.
Operates thermal power stations of 2,990 MW at Neyveli, 250 MW at Barsingsar
& 1,000 MW NTPL station at Tuticorin - a JV between NLC & TANGEDCO.
NNTPS of 1,000 MW is a replacement plant of NLC TS-I which had served its
useful life.
NLCIL is in the process of setting up coal mines of 31 MTPA in Odisha &
Jharkhand, coal based power plants of 6,000 MW in UP & Odisha, 4,200 MW of
wind & solar to fulfill the vision of attaining 21,000 MW installed capacity by the
year 2025.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 5
1.5 Shri D Prabhakar Rao, Chairperson, SRPC & CMD, TSTRANSCO extended warm
greetings to all. On behalf of SRPC, he also extended sincere thanks to CMD, NLCIL
and his team for hosting this SRPC Meeting in such a nice environment. He also
conveyed sincere thanks to all participants from different states and utilities for making it
convenient to attend the SRPC Meeting. Southern Region has been on the forefront in
maintaining grid discipline and during last NPC Meeting held at Indore, Chairperson;
CEA had appreciated constituents of SRPC for taking lead role in scrupulous
implementation of CERC / CEA Regulations and MoP guidelines. One main issue was
with regard to maintenance of adequate coal stock in thermal plants, keeping in view
energy security concerns. In order to reduce emissions, GoI has a vision to replace petrol
/ diesel vehicles with electric vehicles. Electric vehicle industry is picking up in India
and the target is replacement of 100 % public transport and 40 % private mobility with
electric vehicles by 2030. There was thus urgent need to create charging infrastructure
with reliability, which would be a major factor for growth of electric vehicle industry in
India. In an effort to enhance energy security and also minimize adverse effect to
environment from road transport vehicles, all states of Southern Region are to be geared
up to supply bulk power to charging agencies. Andhra Pradesh had already taken lead
role in creating a separate consumer category while Telangana in consultation with State
Electricity Regulatory Commission was also on the way, Cyber Security in Power sector
was also very important in view of increasing incidents of cyber-attacks and threat to
integrated grid operation. All utilities need to monitor action taken with regard to
identification of critical infrastructure, preparedness of Crisis Management Plan (CMP)
and carrying out Mock Drill exercises. In this background, CEA (IT) Division was to
make a Presentation, which indeed is a welcome initiative. Guidelines and
comprehensive action plan by CEA would be extremely helpful for the utilities.
Regarding Telangana power scenario, he thanked Director (Power), NLCIL for the kind
words expressed. Power sector in Telangana is witnessing quality, reliable and 24 hours
free power to agricultural sector from 01st January 2018. This free power is being supplied
successfully to all pump sets in Telangana. Telangana being the new 29th
state had met a
peak demand of 9,622 MW on 16th
February 2018. It was anticipated that the state may
meet around 11,000 MW of demand in coming period. The transmission and distribution
system in the state is geared up to meet 17,000 MW. In generation front, the state sector is
planning to commission 800 MW (first time) at Kothagudem with the active support of
OEM and engineering staff by next month. In addition to that, 1,080 MW (4 x 270 MW) is
coming up at Manuguru with 2 units planned by end of this year and balance 2 units by
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 6
February/March next year. Another Ultra Power Project of 5 x 800 MW at Damaracherla
is also moving ahead and had been awarded to M/s BHEL on EPC basis. The project was
held up on account of environmental clearances and may come up in another 3-4 years.
In addition to that NTPC is coming up with 2 x 800 MW power plant at Ramagundam, of
which one unit is expected to be commissioned by end of 2019 and second unit by
March/April 2020. The total capacity in Telangana which is now around 15,120 MW could
be around 28,000 MW in the coming 3-4 years. Telangana is having two major hydro
projects, both of which are reversible. At Srisailam LB, there are 6 x 150 MW units (900
MW) which are being used in pump mode. 25 TMC of water had been pumped back this
year. At Srisailam RB, there are 7 units of 110 MW which are with Andhra Pradesh.
N‟Sagar is also reversible and in a major development, TSGENCO had made 7 units of
100.8 MW each ready for use in pump mode, as per grid requirement. 3 units are being
used in pump mode while others would be made operational shortly. In the context of large
scale renewable integration, this availability of pump mode is highly beneficial for optimal
load generation balance. Telangana is also having 3,200 MW of installed capacity of Solar
which was quite large. Another 800 MW of Solar is expected by 2019-20. In Telangana,
Solar is being commissioned as per distributed generation model, thereby ensuring optimal
utilization of transmission/distribution assets and better grid management. With active
support of the Government and with sincere efforts of PGCIL interregional link between
NEW & SR (765 kV Wardha-Nizamabad D/C) had been commissioned and Telangana
was able to draw about 1,000 MW power from Chattisgarh. He thanked PGCIL for their
wonderful efforts in this regard.
Chairperson, SRPC requested all delegates to express their views and opinion on the
agenda points which would help in taking proactive decisions in the interest of SR grid.
Southern Region continues to play a lead role in power sector in the country. He
appreciated and placed on record the sincere efforts made by SRPC Secretariat under the
able leadership of Shri S R Bhat, Member Secretary.
1.6 Shri S R Bhat, Member Secretary, SRPC thanked Chairperson, SRPC for inspiring the
forum and also for providing valuable guidance in many matters. He stated that in his
tenure, a number of initiatives had been taken up with Chairperson, SRPC providing
excellent leadership. He thanked Director (P), NLC, CGM (T), NLC and the NLCIL
team for the excellent arrangement made for conduct of the Meeting.
SRPC welcomed the following new Members to the forum:
Shri M M Nayak, CMD, APSPDCL, Tirupati
Shri N S Pillai, CMD, KSEB Ltd., Thiruvananthapuram
Shri Debasis Sarkar, CEO, NTECL, Vallur
Shri Jayadeb Nanda, COO (O & M), UPCL
Shri Vipul Tuli, Managing Director, TPCIL, Nellore
Shri Ashok K Puri, Managing Director, HNPCL
Shri Kumaran P, Director (Distribution and IT), KSEBL
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 7
SRPC also placed on record the excellent services rendered by the following outgoing
Members:
Shri H Y Dora, CMD, APSPDCL, Tirupati
Dr K Ellangovan, CMD, KSEB Ltd., Thiruvananthapuram
Shri C V Anand, CEO, NTECL, Vallur
Shri A Mohan Nargund, CEO, TPCIL, Nellore
Shri N Venugopal, Director (Distribution and Safety), KSEBL
SRPC also placed on record the outstanding contribution of Shri R P Sasmal, Director (O),
PGCIL in the SRPC forum. Shri R P Sasmal would be demitting his office by the month
end. Under his excellent leadership, a number of elements had been added for the benefit
of SR constituents at quite a rapid pace. Member Secretary, SRPC also informed that
CERC staff was visiting SRPC, Bengaluru on 22nd
February 2018 to have interactions with
SR utilities on „Terms and Conditions of Tariff, 2019-24‟. He requested
STUs/Discoms/generators to be kindly present and share their views/concerns/feedback.
SRPC also welcomed Shri Rajesh Mishra, HOD (M&S), MCL and Shri R Raghuraman,
DCOM/Freight, Southern Railways who were Special Invitees to the Meeting. Their inputs
would be highly useful to the forum in the backdrop of prevailing coal supply / coal
transport scenario.
1.7 The Agenda was taken up for deliberations.
2. CONFIRMATION OF THE MINUTES OF THE 32nd
MEETING OF SRPC
2.1 Minutes of the 32nd
SRPC Meeting held on 22nd
August 2017 at Thiruvananthapuram
had been circulated vide letter dated 23rd
October 2017.
2.2 Minutes of the Meeting was confirmed.
3. MEMBERSHIP TO RPC
3.1 Ministry of Power vide Resolution dated 21.12.2017 (Annexure-II) had amended
(added) the following clause after clause (vii) of paragraph 3 of the Resolution dated
25.05.2005 namely:-
“(vii a) A representative each of every Nodal Agency appointed by the Government of
India for coordination cross-border power transactions with the countries having
electrical inter-connection with the region”.
SRPC noted that a Representative each of every Nodal Agency appointed by the GoI
for coordination of cross-border power transactions with countries having electrical
inter-connection with SR would be a Member of SRPC. This would be applicable, as
and when, Southern Region is electrically interconnected with other country and the
Nodal Agency is nominated by GoI.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 8
3.2 CEA vide letter dated 03rd
August 2017 had communicated Membership of JSW Power
Trading as Trader Representative in SRPC for 2017-18. In the 32nd
Meeting of SRPC,
COO (Trading), JSWEL had expressed concern over nomination being communicated in
August, since objective of representation had been lost. It had been suggested that CEA
may kindly communicate Membership during March / April each year so that concerned
Trader is associated with respective RPC for the entire year. It had been agreed that this
matter be brought to the kind attention of CEA. MS, SRPC vide letter dated 29.08.2017
(Annexure-III) had taken up this matter with CEA.
TCC deliberations
TCC had opined that since Membership had been communicated during August
2017 (mid 2017-18), JSW Power Trading be exempt from SRPC Membership for
the FY 2017-18.
MS, SRPC had informed that details in this regard for the year 2018-19 had already
been communicated to GM Division, CEA.
SRPC deliberations
SRPC exempted JSW Power Trading from SRPC Membership for the FY 2017-18.
3.3 Managing Director, TANTRANSCO vide letter dated 29.08.2017 (Annexure-IV) had
proposed that in addition to existing Members to SRPC from Tamil Nadu, the nomination
of Director (Transmission Projects) TANTRANSCO may also be included.
TCC deliberations
TCC had noted that there had been some exceptions earlier and hence had
recommended for Membership of Director (Transmission Projects),
TANTRANSCO to SRPC from the financial year 2018-19.
SRPC deliberations
SRPC approved the Membership of Director (Transmission Projects),
TANTRANSCO to SRPC from the FY 2018-19.
4. COAL ISSUES
4.1 Number of thermal power stations in the Region had faced critical coal stock situation in
the past few months. Chairperson, SRPC vide letters dated 25th
September 2017 and 13th
November 2017 (Annexure-V) had taken up the issue regarding critical coal stock and
availability of sufficient rakes with Ministry of Power. SRPC vide letter dated 22nd
November 2017 (Annexure-VI) had raised energy security concerns with Hon‟ble
CERC and requested that the matter regarding maintenance of low coal stock by CGS
station whose tariff is approved by Hon‟ble Commission may kindly be examined. A
Special Meeting was also convened at NTPC, Secunderabad on 21st December 2017 to
discuss matters relating to coal supply including diversion (MOM available at SRPC
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 9
website). The projected availability by most of the generators was considering adequate
coal stock. However lesser generation availability (DC) on account of fuel supply issues
was affecting LGB of the states. It also affected procurement of power which is based on
the LGB. As agreed in the Secunderabad Meeting, Chairperson, SRPC vide letter dated
28th
December 2017 (Annexure-VII) had taken up the issue regarding „Consent of
original beneficiaries‟ for diversion of coal with Chairperson, CEA.
4.2 NTPL vide letter dated 23.12.2017 had intimated that for operating both the units at 85
% PLF, 4.735 MTPA of coal was required and had requested to kindly take up the issue
with CEA for directing both MCL and ECL to enhance FSA quantity for NTPL.
Subsequently, SRPC vide letter dated 29th
December 2017 (Annexure-VIII) had taken
up this issue with Fuel Management Division, CEA. Reply of CEA dated 03rd
January
2018 is given at Annexure-IX.
4.3 MS SRPC vide letter dated 17th
October 2017 (Annexure-X) had also communicated
concerns expressed by generators in the methodology adopted by CEA in assessment of
daily coal stock position. On these issues raised by SRPC, Fuel Management Division,
CEA vide reply dated 20th
November 2017 (Annexure-XI) had informed the following:
There are no Specific coal consumption (SPC) norms specified by FM Division,
CEA.
As per new methodology issued on 08.11.2017, revised criteria for Critical / Super
critical coal stocks for TPPs would be as under:
Criticality Plants Criteria
Critical stock Pit-head Plants Coal stock less than 5 days
Non-Pit head Plants Coal stock less than 7 days
Non-Pit-head Plant
(More than 1,500 kms)
Coal stock less than 9 days
Super-critical stock Pit-head Plants Coal stock less than 3 days
Non-Pit head Plants Coal stock less than 4 days
Non-Pit-head Plant
(More than 1,500 kms)
Coal stock less than 5 days
Daily coal requirement of a Plant would be based on average coal consumption of
previous 7 days (rolling average) subject to a minimum PLF of 55 %.
4.4 There was need to maintain adequate coal stock in thermal stations, on account of energy
security concerns.
4.5 The following had been noted in the TCC Meeting:
MS, SRPC had appraised TCC about the issues in coal transport and supply. CERC
Staff was conducting a preliminary Meeting on 22nd
February 2018 in SRPC,
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 10
Bengaluru to obtain inputs for Terms and Conditions of Tariff Regulations 2019-24.
These issues could be further highlighted in that Meeting. All Discoms and
stakeholders were requested to attend that Meeting and present their case. Coal stock
position as on date was comfortable in respect of generators in Telangana and Tamil
Nadu while situation in KPCL, APGENCO and Simhadri-NTPC stations was not very
comfortable. To sort out these issues Railways and MCL had been invited as Special
Invitees to the SRPC Meeting.
APGENCO had stated that the problem persisted with Railways and sufficient number
of rakes were not being allocated.
CE (IT), CEA had informed that CEA and NTPC, with active help of Railways and
Ministry of Coal are developing an IT application which would help in monitoring of
coal stock available at each Railway siding, with daily receipts and dispatch of coal,
rake allocation for coal supply to generating stations. This along with stock,
consumption and receipt of coal at generating station as available in NPP Portal,
would help in effective monitoring of coal supply. This would help ensure that coal
movement is monitored from source to consumption.
Director (GM), CEA had informed that the coal diversion matter had been examined
by CEA. It had been clarified that „Consent of original beneficiaries‟ would be
required for the purpose of diversion (a formal reply in this regard would be
communicated).
CEO, NTECL had expressed concern that ACQ for NTECL (6.24 MMT) was not
sufficient and requested its enhancement (8.863 MMT equivalent to 85% PLF). This
issue regarding specific coal consumption and total lead time had also been taken up
with CEA (refer Annexure-X). The issued norms dated 15.01.2015 on coal
consumption is given at Annexure-XII.
CEO, NTPL had stated that they require around 4.7 MTPA (at 85 % PLF) to run at
full load while ACQ was only for 2.9 MTPA (MCL: 2.6 MTPA, ECL: 0.3 MTPA).
Though coal availability of NTPL was less than 7 days, it had not been categorized
under 'Critical/Super Critical Stock' position status by CEA since coal supply to NTPL
had crossed 75 % of ACQ. This was the trigger level for post -2009 thermal power
plants as per clause 2C of CEA Fuel Management Division Revised Guidelines for
Preparing Daily Coal Report.
It was noted that the NTPL matter had been taken up with Fuel Management Division,
CEA and they had referred it to TPP&D Division for further action. Coal adequacy
issues were being viewed seriously by Hon‟ble Commission and CERC staff had also
reportedly taken up this matter with individual generators.
TSTRANSCO and TANTRANSCO had requested generators to maximize the
availability/generation up to May 2018.
NTPC had informed that dedicated officials had been posted at Talcher &
Bhubaneswar to coordinate coal supply and rake movement/allotment. Presently, the
issue was with regard to rake availability/movement.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 11
SRPC deliberations
4.6 MS, SRPC informed that all inputs received in respect of coal supply and coal transport
from GENCOs had been compiled and duly communicated to MCL & Railways.
4.7 The following was noted in respect of Railways:
APGENCO
APGENCO had informed that during the period October 2017 to December 2017,
realization was around 74% and 78% at Vijayawada TPS and Rayalaseema TPS. It
had expressed concern that for the month of January 2018 (upto 18th
) only 25 rakes
were loaded against the 66 rakes sanctioned at Talcher siding, 52 rakes were loaded
against 92 rakes sanctioned at Ib siding and only 03 rakes were loaded against
sanctioned 52 rakes at Balram siding. More than 96,000 MT of washed coal was lying
at M/s Spectrum Washery.
APGENCO had requested for minimum 2 rakes/day at Balram siding. Moreover,
sufficient rakes were required at Talcher (3 rakes/day) and Ib (5 rakes/day) sidings
to improve the coal at Vijayawada TPS and Rayalaseema TPS which was less than 5
days on sustained basis. Unit 6 at Rayalaseema (Stage IV) is also in advanced stage
of commissioning and additional rakes were required.
Shortfall in rakes per day for APGENCO power plants was as follows:
a) Dr NTTPS – 1.75 rakes/day
b) RTTP Stages I, II & III – 0.36 rakes/day
For the upcoming unit of RTPP Stage IV, SLC had sanctioned linkage. Additional 2
rakes/day is required for movement of raw coal from MCL for this purpose.
KPCL
From MCL, 218 rakes provided by Railways against programmed of 291 (60% of MSQ
through ARR). Realization is around 75% for the FY 2017-18 (upto Dec 2017). In
respect of WCL, 206 rakes were provided against FSA quantity of 437 rakes for the FY
2017-18 (upto Dec 2017). This was because Central Railways (CR) was not providing
adequate empty rakes. 7 rakes/per day is required from SCCL but SCR had supplied
less rakes due to non-availability of adequate BOXN rakes. Concerned Zonal Railways
do not have adequate strength of „Valid‟ rakes, which is affecting movement.
KPCL had informed that entire supply of SCCL, portion of WCL supply & portion
of MCL supply through RSR via Krishnapatnam as well as imported coal are to be
transported by SCR. Around 18 rakes/day would be required by KPCL for FY 2018-
19. Additionally around 2-3 rakes were required for fly ash movement. KPCL had
requested to ensure adequate availability of valid rakes for movement of allocated
coal through ARR.
TANGEDCO
Coal is transferred from Talcher coal fields to Paradip port and then to TANGEDCO
stations either through Rail cum Sea route or Rail-Sea-Rail route. During January
2018, 226 rakes were dispatched by Railways against sanctioned 337 rakes.
TANGEDCO requested for adequate rakes allocation/loading.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 12
NTPC Kudgi
Strengthening of Bhima River bridge by SWR as movement of CC+8 rakes ruled out.
Shortage of BOXN wagons in SCR. There was congestion in Gadag route and shortage
of SWR crew and locos for rakes via Gadag and Hotgi. There was shortage of Banker
for rakes via Hotgi due to up gradient. Further, there was shortage of premium rakes at
Bandag siding (BNDG) for Pakri-Barwadih.
NTPC Simhadri
Against the requirement of 12 rakes/day (MCL-Talcher, MCL-Ib, ECL and SCCL)
Simhadri only around 6-7 rakes/day. Physical coal stock was in the range of 0-3 days
on sustained basis since last few months. Unit was also taken out due to critical coal
stock. Rake realization from ECR was less. The logistic constraints between
Sambalpur-Rayagada and the congestion between Vizainagaram and Vizag were also
highlighted.
NTPC Simhadri had requested railway to address these issues.
NTECL Vallur
NTECL had pointed that during the period July 2017 to December 2017 against the
offer of 746 rakes (from MCL-Talcher, MCL-Ib, MCL-Dharma, ECL and CCL) 729
rakes were allocated while 637 rakes were actually loaded.
Unit-III is likely to come on bards shortly and thus maximum rake allocation /
loading is required.
NTPL Tuticorin
NTPL had pointed out that during the period from April 2017 to December 2017,
against 330 rakes requested to Railways, only 257 rakes were actually allotted which is
around 78%.
NTPL had requested for maximum rake allocation / loading as they were short of
the target Plant Availability Factor.
MCL
Availability of Box N rakes for maximizing long distance linkage power plants to be
improved. Presently, Box N rakes are not sufficient with Zonal Railways. The issue of
congestion in ECO Railways, for rakes going to Paradip and through Sambalpur –
Titlagarh route affecting rake materialization for plants location in Southern Region.
Also BOB rakes need to be allowed over long distance for power plants such as
Simhadri and other plants with BOB rakes unloading facilities.
4.8 Director (T), APGENCO stated that there were no coal supply issues in respect of MCL.
Problem persisted for Rayalseema TPS with regard to availability of sufficient rakes
(BOXN) on account of long distance involved. Adequate rakes for Krishnapattnam,
Rayalaseema Stage-IV (600 MW) and at Spectrum Washery were also required. 5
rakes/day at Ib and 3 rakes/day at Talcher were required to improve the coal stock at
Rayalaseema & Vijayawada stations.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 13
4.9 Technical Director, KPCL reiterated the Railway issues being faced by KPCL and
requested for concerted support from Railways in this regard. Around 18 rakes/day would
be required during the year 2018-19.
4.10 Regional ED, NTPC stated that track congestion issue needs to be addressed to improve
the coal supply to NTPC stations specifically at Simhadri. For Simhadri, only 50 %
loading had been possible on account of less rake realization. Arranging additional coal
would not serve any purpose, in case the same cannot be transported.
4.11 CEO, NTECL expressed concern on the ACQ for NTECL (6.24 MMT) which was not
sufficient and requested for enhancement of ACQ (8.863 MMT equivalent to 85% PLF).
Director (O) had taken up the issue with JS (Thermal), MoP regarding enhancement of
ACQ. He requested Railways / MCL/CCL to ensure adequate supply of coal to the station.
Since route was Rail-Sea, the transit time was slightly higher at 7-8 days from mine to
station. NTECL was able to manage presently due to forced outage of Unit-3. However,
with all three units on bars, the present supply of 3-4 rakes would not be sufficient.
4.12 In respect of NTPL, Director (P), NLC stated that ACQ under existing FSA with ECL &
MCL is only sufficient to operate the power plant for about 22 days/month (73.33%). For
operating both units at 85 % PLF, 4.735 MTPA of coal is required. NTPL is not being
flagged as critical / super critical even when coal stock is less than 3 days. „The coal
supply exceeded the trigger level‟ is the reason being cited by CEA for this. Against
request of 330 rakes, only 257 rakes were actually allotted for the period from April 2017
to December 2017. As per new methodology for monitoring coal stock position, the
criteria for flagging critical and super critical status for non-pit head station is coal less
than 7 days and 4 days respectively. As far as NTPL is concerned, which is situated at the
farthest point from coal supply point, it normally takes more than 15 days through Rail
cum Sea mode, since ship has to sail around Sri Lanka. Hence, it is requested to consider
the criteria for flagging critical / super critical status for NTPL as 15 days and 7 days
respectively.
4.13 DCOM/Freight, Southern Railways stated that concerns of SR generators would be duly
communicated to the Management. He assured that 2 rakes/day at Balram Siding would be
ensured for APGENCO.
4.14 Chairperson, SRPC observed that there needs to be some firm commitment/specific action
plan from Railways.
4.15 HOD (M&S), MCL stated that MCL is endeavoring to maximize supply to SR generators
through sustained monitoring. The Sub Committee with Members from MoC, MoR, MoP,
CIL, CEA etc review coal stock on a weekly basis and sometimes on bi-weekly basis.
MCL is continuously taking up the transport related issues with Railways. Availability of
BOXN rakes (in ECR and ECOR) for long distance linkage power plants is to be
improved. Presently, BOXN rakes are not sufficiently available with Zonal Railways. To
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 14
Paradip port, BOBR rakes were being supplied, and Gencos may need to avail RSR route
also instead of All Rail Route to reduce congestion. There had been no shortfall in offer by
MCL while problem was mainly with regard to availability of rakes by Railways. Certain
Inter Zonal Railway issues and congestion in certain sections were also highlighted. There
was congestion in ECO Railways, for rakes going to Paradip and through Sambalpur –
Titlagarh route affecting rake materialization for plants located in Southern Region. Also
BOB rakes need to be allowed over long distance for power plants such as Simhadri and
other plants with BOB rakes unloading facilities. In case Railways could offer 56
rakes/day for power sector, the entire requirement could be met. He also requested Gencos
for clearing of the dues to MCL in a timely manner. Specific issues of respective Gencos
are given below:
APGENCO: Vijayawada lifting coal through both Rail and Road mode while
Rayalaseema is lifting through rail mode only. Lately, Vijayawada not lifting coal
through road mode citing less evacuation of washed coal and requesting more raw coal
through rail mode.
APPDCL (Damodaran Sanjeeviah): APPDCL should modify its logistic arrangements
through washery for faster evacuation of washed coal. The coal is being lifted through
road mode.
TPCIL: The programme is not being placed each month for lifting coal from Ib. The
coal stock at Paradip port is not being evacuated faster. Materialization remained poor
on account of less supply of rakes by Railways.
HNPCL: There are unloading constraints as it is being unloaded in public siding and
later being transported to the consumption point.
TANGEDCO: Stations of TANGEDCO are offered coal from both Talcher and Ib. The
dispatch from Talcher had increased since Railways had augmented rake supply.
Dispatch materialization from Ib field had been higher although TANGEDCO is
reluctant to increase its supply from Ib.
NTECL: NTECL is being offered coal both from Talcher and Ib. Materialization from
Talcher remained less on account of lesser number of empty rake supply.
NTPL: NTPL has entered into an agreement with private Washery of operator for
taking washed coal. Subsequently, MCL had leased Deulbera siding for further
transport of washed coal. However, there is scope for enhanced materialization of
washed coal if adequate arrangement for road lifting is made. MCL is regularly
supplying additional raw coal through rail mode to tide over the immediate stock crisis.
Raichur-KPCL: Raichur is lifting coal from Talcher and Ib through both ARR and RSR
route (via Paradip port). However, KPCL has started programme from Ib only since
October 2017. Based on the request of KPCL, additional quantity of coal is being
offered to sustain generation and stock buildup. Prorata materialization from MCL was
103 % during 2017-18 (upto Feb).
Simhadri-NTPC: Simhadri is being offered both from Talcher and Ib. Earlier rakes
were diverted which lead to low stock situation at the station. Less rakes supply by
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 15
Railways had also lead to lower materialization.
Coal supply status for Southern Region power houses for the period April 2017 to
January 2018 and dispatch plan for February and March 2018 of MCL is given at
Annexure-XIII
4.16 After deliberations, it was agreed that Chairperson, SRPC may be kindly requested to
take up the matter with Chairman, Railway Board, highlighting problems being faced by
SR coal based thermal generators.
5. 400 kV NPS – NELLORE TRANSMISSION LINES LOADING
5.1 In the 41st
Meeting of SCPSPSR, the following had been noted, „CTU informed that 400kV
Nellore PS Nellore D/C lines have to be opened to control short circuit level of Nellore SS.
CTU recommended opening both the lines. Also informed that 765kV Nellore PS-Kurnool
D/C line and 400kV Nellore PS-Gooty D/C line is sufficient for evacuation of Power from
Nellore Complex‟.
5.2 MEL/SEL vide letters dated 04.11.2017 and 06.11.2017 (Annexure-XIV) had raised
certain issues regarding overloading / tripping of NPS – Nellore Loop Out segment and
non-implementation of decision of isolating the segment. Issue of maintenance
responsibility had also been raised. This issue was deliberated in the 137th
Meeting of
OCC held on 10.11.2017. (Relevant extract is enclosed at Annexure-XV). NLDC vide
letter dated 01.12.2017 (Annexure-XVI) had taken up this issue with CTU and requested
that these aspects be examined and solution evolved in the interest of secure grid
operation. CTU vide letter dated 15.12.2017 (Annexure-XVII) had replied to POSOCO‟s
letter and stated that in the event of outage of both circuits of Nellore PS - Nellore 400 kV
D/C, loadings on remaining outlet from Nellore PS are generally in order with full dispatch
of LTA quantum (3,436 MW) at Nellore complex. Accordingly, it had been proposed that
Nellore PS - Nellore 400 kV D/C line be kept in service under normal conditions.
However, in the event of outage of one circuit, the other circuit may also be opened.
5.3 In the OCC forum, SEL & MEL had been requested to take up this matter with
NLDC/CTU regarding SPS implementation to trip surviving line, in case other line trips
while line loading is beyond specified limits. SR-I had stated that maintenance of the LO
portion of Nellore – NPS line was to be carried out by SEL/MEL. Also, there had been a
grid incident in Nellore S/S on 12th
January 2018 on account of CVT failure.
5.4 After deliberations, TCC had concluded the following:
TCC recommended for SPS, during tripping of one of the lines of NPS-Nellore. SPS
logic would be finalized in consultation with SRLDC, PGCIL, SEL & MEL and SRPC
Secretariat.
During any outage of this interconnector, system operator would take appropriate
decision, regarding curtailment, if any, of interregional ATC or curtailment of NPS
connected generators etc as per provisions of extant Regulations.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 16
CTU had clarified that maintenance of the LO portion would continue to be carried out
by MEL & SEL.
TCC recommended that provision of third ICT at NPS could be planned/studied as a
long-term measure. Other options could also be looked into by CTU as discussed in
earlier Meetings / suggested by POSOCO.
5.5 SRPC noted the above.
6. CYBER SECURITY PREPAREDNESS MONITORING
6.1 CEA vide letter dated 16.10.2017 (Annexure-XVIII) had informed that in view of
increasing incidents of Cyber attacks and threat to integrated grid operation, all utilities
need to monitor action being taken with regard to following points and report the status to
respective Computer Emergency Response Teams (CERTs):
a) Appointment of organization-wise Chief Information Security Officers and its status
b) Identification of organization-wise Critical Infrastructure and its status
c) Preparation of organization-wise Crisis Management Plan and its status
d) Status of Cyber Security Mock Drill activity in coordination with CERT-In by power
sector entities.
e) Status of action taken for CERT-In / NCIIPC advisories.
Quarterly action taken report were to be submitted by each utility to Chief Information
Security Officer (CISO) of MoP ie. Chief Engineer (IT) with a copy to RPC Secretariat.
Subsequently CEA had informed that IT Division, CEA and Sectoral CERTs proposed to
make a presentation on "Cyber Security in Power Sector" during the next TCC Meeting.
6.2 The following had been noted in the TCC Meeting:
Chief Engineer (IT), CEA had made a detailed presentation (Annexure-XIX) on cyber
security issues.
Cyber Security Preparedness - since last two years, through CERT (Thermal, Hydro,
Transmission and Distributions) efforts were made to sensitize and prepare all utilities
for cyber security in power system. Not much progress was visible and a lot needs to be
done.
Appointment of organization & plant level Chief Information Security Officers (CISO),
identify organization-wise Critical Infrastructure, formulate Crisis Management Plan
(CMP), Security Mock Drills, Information Sharing & Analysis Centre (ISAC) – Power
& Trainings / workshops on Cyber Security was to be undertaken.
CISO nominations not received : Hydro - private utilities; Thermal - TSGENCO,
KSEBL, APGENCO, IPPs & Nuclear; Transmission - private transmission licensees;
Discoms - Andhra Pradesh (Eastern), Telangana (Central), Kerala (KINESCO,
Infopark), Tamil Nadu (Technopark), Lakshadweep and A & N Islands.
CISO nominations are to be communicated and the Quarterly Preparedness Monitoring
Report to be furnished, as per the enclosed format, in a timely manner.
CE (IT), CEA had informed that National Power Portal (NPP) a Dashboard and Data
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 17
analytic for Power Sector at one place had been launched by Hon'ble Power Minister on
14th
November 2017. Data entry for all six applications is being done and report is being
generated in testing phase out of which five to be made operational in next two months.
In case there is any requirement of training, CEA could arrange regional level
workshops. Further, a Geo Spatial Energy Map project under NITI Aayog had been
initiated. ISRO and CEA are preparing Geo spatial map of all generation, transmission
and distribution assets. Any state which wants GIS mapping of its assets above 33 kV
(initially), can get it done free of cost. This Map would be useful for operation and asset
management purposes. Format of the data had been shared by concerned Divisions of
CEA with all state utilities. Data from Transmission and Distribution utilities was
however awaited. Cooperation had been sought from the constituents in both these
initiatives.
TSTRANSCO had pointed out that while audit was being carried out in their system,
there was no approved procedure or clarity on whether the same was adequate. CEA
was kindly requested to come out with some specific guidelines and training on the
subject.
It was agreed that CEA would kindly share the tender document on IT System Audit (of
Himachal Pradesh). States could also approach CEA for any support in this regard.
Third party audit was also to be carried out by empanelled auditors.
6.3 SRPC noted the above.
7. PREPARATION FOR MEETING REVISED ENVIRONMENT NORMS AS PER
ENVIRONMENT (PROTECTION) AMENDMENT RULES, 2015
7.1 Revised water consumption and emission norms for existing as well as new thermal units
(to be installed from 01.01.2017 onwards) as per Environment (Protection) Amendment
Rules, 2015 had been notified by Ministry of Environment, Forest & Climate Change
(MOEF & CC) (Gazette Notification dated 07.12.2015). MOEF guidelines had classified
thermal generators into three categories with different norms. The three classes were -
prior to 31st December 2003, 1
st Jan 2004 to 31
st December 2016 and beyond 1
st January
2017. Existing as well as new plants were required to meet standards by the stipulated time
lines. Preparedness and action plan in order to comply with revised norms had been
discussed in SRPC as well as Subcommittee Meetings. Meetings were conducted on 12th
January 2017 and on 25th
March 2017 at SRPC, Bengaluru to deliberate on status and
also to firm up Phasing Plan.
7.2 The following had been noted in earlier Meetings:
SRPC had noted the requirements for necessary compliance.
Chairperson, SRPC vide letter dated 24th
May 2017 addressed to Secretary-Power, MoP
had brought to kind attention of MoP, the issue regarding funding either from PSDF or
any other fund to meet stipulated revised environmental norms.
APGENCO had informed that a Committee has been formed on FGD assessment etc
and the Report would be submitted to the Board shortly. About Rs.1 Crore/MW was
estimated expense for FGD and the issue would be reviewed/decided in the next Board
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 18
Meeting. AP was in discussions with M/s BHEL and its team had also visited the power
stations.
NLC had informed that they had appointed M/s Mecon as Consultant and
measurements had been taken at site. The report was expected in about 1-1½ month
and the status would thereafter be communicated to CEA.
Generators had expressed concern on addition expense of about Rs 1-1.5 crore/MW,
space constraints, burden on the utility, economic viability, passing the burden on
consumers/tariff etc
Generators had been suggested to keep CEA kindly apprised of developments in this
matter. Action was to be initiated to adhere to the FGD Plan and also Phasing Out Plan
finalized by CEA/SRPC.
It had been agreed that Chairperson, SRPC be kindly requested to once again take up
the issue regarding funding (PSDF/any other fund) with Ministry of Power, for meeting
the environment norms.
7.3 As agreed in the 32nd
Meeting of SRPC, Chairperson, SRPC vide letter dated 28th
August
2017 (Annexure-XX) had taken up the matter with MoP.
7.4 A Special Meeting to finalize phasing plan of Thermal Units for implementation of new
environmental norms was conducted in SRPC on 18th
September 2017 with participation
of CEA and various stake holders. Draft Plan for FGD implementation and Phasing Out of
units had been frozen. Some of the generators had expressed concern/difficulty in
obtaining approvals and arranging funds etc. In view of the time bound nature and its
criticality Chairperson, SRPC vide letter dated 04.10.2017 (Annexure-XXI) had requested
Chairperson, CERC that the concerns expressed by the generators may kindly be arranged
to be examined.
7.5 NTPC had filed a Petition No.98/MP/2017 in matter of „Petition under Section 79 of the
Electricity Act, 2003 read with Regulation 14(3) (ii) and Regulation 8(3) (ii) of the CERC
(Terms and Condition of Tariff) Regulations,2014 for approval of expenditure on
installation of various Emission control systems as detailed in this Petition for compliance
of MoEF & CC , GoI notification dated 7.12.2015 mandating compliance with revised
environmental norms for thermal power stations‟ In the ROP for date of hearing
27.07.2017, Hon‟ble Commission had admitted the Petition and directed to issue notice to
the Respondents. In the petition NTPC had stated although, the said Notification would
cover all projects of NTPC, present Petition covers indicative expenditure to be incurred
by two generating stations namely, Singrauli STPS and Sipat STPS Stage-I.
7.6 A Meeting had been convened by CEA on 23rd
January 2018 to discuss scheduling priority
to TPPs / Tax exemption to TPPs which had installed Pollution Control Equipment and
generating clean power vis-à-vis TPPs which had not installed Pollution Control
Equipment (CEA letter dated 10.01.2018 is given at Annexure-XXII).
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 19
7.7 The following had been noted in the TCC:
TSGENCO vide letter dated 18.02.2018 had informed that Kothagudem Unit 9 & 10 are
now identified for FGD installation with time schedule of 30.06.2022 & 31.12.2022.
Unit 3 had been recommended for retirement while unit 1, 2, 4, 5, 6, 7 & 8 would be
retired by December 2019.
NTPL had informed that LOI had been issued to M/s Development Consultant Pvt Ltd,
Kolkata for Consultancy Service for study and engineering for adhering to
environmental norms.
TCC had recommended that Chairperson SRPC may be kindly requested to again take
up the matter regarding funding of FGD/ other equipment to meet the norms.
NPC had informed that FGD funding could have been considered under NCEF fund
(since fund has dried up in PSDF) but reportedly the NCEF fund has been taken into the
GST regime and may not be available now.
FGD installation plan / phasing out plan as received from CEA was presented. Utilities
were requested to kindly adhere to the action plan finalized. Reportedly, individual
generators had been communicated in this regard by CPCB. In the PSDF Review
Meeting held at Kochi on 05.01.2018, Chairperson, CEA had advised that the FGD
installation plan could also be monitored in the OCC forum.
All stake holders were requested to attend the Meeting scheduled on 23rd
February 2018
(follow up meeting consequent to meeting in CEA on 23.01.2018) on scheduling
priority for environmental norms compliant TPPs. Three options on scheduling priority
and also few other measures to facilitate FGD installation had been suggested for
deliberations.
7.8 SRPC noted the above. SRPC also requested Chairperson, SRPC to kindly take up the
issue again regarding funding of FGD/ other equipment to meet the norms.
8. MOP COMMITTEE ON “NHPC TO BECOME GRID STABILISER USING
HYDRO POWER”
8.1 A Committee had been formed on “NHPC to become Grid Stabilizer using Hydro Power”
vide MoP Office Order dated 10.08.2017. In a large grid like India‟s, the flexibility of
hydro generators viz. overload capability, fast ramping & peaking support etc has immense
value for reliable, secure and economic grid operation. MoP felt that an aggregator may be
needed for balancing of power requirement during peak and off-peak hours, and this role
may be assumed by NHPC Ltd. The Committee had been mandated to examine the issue
on how NHPC can aggregate and use hydro power for peak supply. Further, the
Committee may explore the possibility of the non-peak supply using coal based power.
8.2 Chairperson, SRPC vide letter dated 31.10.2017 (Annexure-XXIII) had brought the
following issues to kind attention of POSOCO for deliberations in the final Meeting of this
Committee:
It was strongly felt that a clear market mechanism was required to be introduced which
could incentivize hydro support for peaking support, ancillary services etc. Resources
belonged to the states and were to be utilized by them in tune with the federal structure.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 20
Focus may need to be on NHPC as an Aggregator and not on performance of intra-state
generators during peak hours.
In the current scenario, Hydel Generation is being optimally utilized keeping in view
the Control area requirements duly, considering normal and contingency situations
based on the releases advised.
It was thus for kind consideration whether scope of NHPC as aggregator could
commence with ISGS Hydro stations initially. This would help in gaining valuable
operating insights into this new concept of Aggregation. The same could be extended to
intra-state generators in the next stage, through introduction of suitable commercial
mechanism.
8.3 Subsequently, it was noted that POSOCO had furnished the final report to MoP.
8.4 The following had been noted in the TCC Meeting:
NLDC had informed that NLDC (as Member Secretary of the Committee) had
submitted the final version of the report to MoP. There were reportedly certain
observations from MoP on this report.
It was noted that views of SR constituents in this regard had already been
communicated by Chairperson, SRPC vide letter dated 31st October 2017.
SR states reiterated that hydro reserves are for meeting control area LGB, RE
Variations, irrigation requirement etc.
8.5 SRPC noted the above.
9. OPTIMUM HARNESSING OF RE IN SOUTHERN REGION
9.1 Follow up of MoP/SRZC meeting
9.1.1 For actionable items under Southern Regional Zonal Council, a Meeting had been held
on 10th
February 2017 in MoP on matters relating to optimum harnessing of Renewable
Energy Integration in SR without endangering Grid Security. It was to be kindly noted
that the Overarching Agreement in SR is yet to be signed by TANGEDCO. This was
noted as a pending actionable point in the 10th
Meeting of the Standing Committee of the
Southern Zonal Council held on 28.11.2017 at Bengaluru. Utilizing the Overarching
Agreement needed to be kindly contemplated.
SRPC vide letter dated 24.01.2018 (Annexure-XXIV) had requested Chairperson,
TNEB that necessary directions may kindly be arranged be given to TANGEDCO for
signing the Overarching Agreement.
9.1.2 The following was noted in the earlier Meetings with regard to SAMAST:
APTRANSCO had informed that they had prepared a Report and submitted it to
CERC and to NLDC for funding. It was of concern that the amount approved was
only about 1/5th
of the estimate.
TSTRANSCO which had submitted estimate of Rs 85 crores had also endorsed the
views of APTRANSCO. They had emphasized that in case much lower funds are
approved, it may not encourage entities to take up the project in a time bound
manner.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 21
KPTCL had informed that they were preparing the DPR and had also deputed a
Committee to Gujarat and MP to study their proposals. DPR would be finalized by
end of the August 2017.
NLDC was requested to kindly look into the possibility of higher fund approval for
proposals under SAMAST. NLDC had assured that the DPRs under SAMAST
would be possibly relooked. For reliable communication, the grant has been raised to
50 % which was earlier 30 %.
9.1.3 The following was noted in the TCC meeting:
TANGEDCO was again requested to kindly sign the Overarching Agreement. TN had
informed that they had entered into a swap arrangement. The signing of the
Overarching Agreement was under consideration of the Management.
The following had been noted in respect of SAMAST:
TANTRANSCO had informed that PO had been placed on 13.12.2017; and the
project was likely to be completed by 25.05.2018.
APTRANSCO and TSTRANSCO had requested for clarity on 5-Minute scheduling
vs 15-Minute scheduling to place Orders. It was also pointed out that CEA may
need to appropriately incorporate 5-Minute scheduling in its Metering Regulations.
TSTRANSCO had informed that DPR for Rs. 87 Crores had been submitted.
KPTCL had informed that they had placed the Order for meters which is adjustable
to 0-60 minutes. DPR for Rs. 43.3 Crores had been submitted on 08.12.2017.
NLDC had stated that with 5-Minute specifications, the 15-Minute values, if
required, could be computed. 5-Minute scheduling was the recommendation of the
Technical Committee of FOR. The draft report had now been circulated for
comments.
NPC had stated that as per ToR, the need for 5 minute scheduling was to be
examined. The same was needed to be simulated and validated w.r.t. 15-Minute
scheduling before recommending the same to FOR. It needs to be ascertained
whether there would be huge variation between 3 blocks of 5 minutes wrt 15
minute block, for the new scheme to be in place with operational / economic
justification, without AGC in place. Pros and cons of the two options are not
highlighted in the draft report. NPC also informed that the SAMAST schemes are
being considered favorably for enhanced approvals, (50 % for communication and
>50 % for other project aspects).
SRPC deliberations
9.1.4 SRPC noted the above.
9.1.5 Director (Opn), TANTRANSCO stated that before the next SRPC Meeting, the
Overarching Agreement was likely to be signed for Banking/Swap option. They have
entered into Swap arrangement with state(s) in other region.
9.1.6 It was noted that TANGEDCO could sign the Overarching Agreement and only utilize
option of Banking/Swap, as and when, deemed fit. The Overarching Agreement could be
utilized in intraday contingencies for mutual benefit of the states.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 22
9.2 Measures for RE Balancing/Reserve assessment and management
9.2.1 Following issues are being discussed in respect of RE variability in earlier
SRPC/TCC/Subcommittee Meetings :
Lift irrigation/pumping loads optimization
Solar morning and evening ramps
RE and demand variability
Demand response
9.3 Pump mode operation of Nagarjunasagar
9.3.1 The following had been noted in earlier Meetings:
TSGENCO had informed that lift irrigation scheme between N‟ Sagar and Tail Pond
were getting submerged and needed to be elevated. Shifting of the lift irrigation
scheme (under private sector) is under progress. Once lift irrigation scheme gets
elevated and with sufficient available water, units can be operated in pump mode.
CMD, TSTRANSCO & TSGENCO had informed that the Tail Pond reservoir is
ready and was to be handed over to TS. Recently OEM, M/s Hitachi had inspected
all the units and they had approved the commissioning. Tail Pond was for pump
mode and due to some administrative reasons there had been some delay.
MD, APGENCO had informed that the proposal for handing over of the dam has
been submitted to Government and was under consideration. The views expressed in
SRPC Meeting would be communicated to Government to take the decision at the
earliest. Being an interlinked issue with Puluchintala, the handing over was awaiting
formalization. Tail Pond dam was constructed with the intention of utilizing the
N‟Sagar units in pump mode and in addition Tail Pond units were constructed to
utilize 50 MW power.
TCC deliberations
It was noted that on 4th
Feb 2018, 2 units of Nagarjunsagar, TSGENCO had run in
pump mode for more than 6 hours on trial basis. Between 09.01.2018 to 01.02.2018,
units 2 to 8 were tested successfully in pump mode operation. During this season, 3
units only can be operated simultaneously on account of certain constraints in
suction side of the water conducting system.
SRPC deliberations
SRPC placed on record its appreciation of TSGENCO for operationalization of
N‟Sagar units in pump mode.
9.4 Pump Storage Plants
9.4.1 A Meeting had been convened by CEA on 28th
June 2017 (MoM issued on 17.07.2017)
regarding utilization of existing pumps in the country. CEA had informed the following
about upcoming Pump Storage Plants in SR:
State PSP Scheme Status
Andhra Pradesh Upper Sileru (1000 MW) DPR being prepared
Tamil Nadu Kundah (4x125 = 500 MW) DPR prepared.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 23
41st SCPSPSR : 2020-21
Sillahalla-I (4x250 = 1000
MW)
41st SCPSPSR : Execution in
preliminary stage
Sillahalla-II (4x250 = 1000
MW)
4 projects on existing sites
Karnataka Sharavathy (2000 MW) PFR submitted to MoEF
Varahi
Kerala Sholayar-I (810 MW) Survey and investigation
(S&I)/implementation could not
be taken up for want of forest
clearance
Sholayar-II (390 MW)
Poringalkuthu(80 MW)
9.4.2 In its 32nd
Meeting of SRPC, it had been suggested that constituents may kindly pursue the
pumping proposals with concerted efforts.
10. COMPLIANCE OF CEA REGULATIONS FOR GRID CONNECTIVITY OF
RENEWABLE ENERGY SOURCES
10.1 CEA vide letter dated 12.04.2017 and 08.05.2017 (enclosing MoP letter dated 06.04.2017)
and in Special Meetings held on 28.06.2017 and 11.09.2017 had observed that it was
obligatory for all grid connected renewable generators to provide necessary facilities for
data communication and data storage and other parameters as may be stipulated. It had
been decided by CEA that respective states would submit weekly reports of data
communication status to CEA as well as to respective RPC / RLDC and NLDC. The issue
had been further discussed in the 4th
Meeting of LVRT / RE issues held on 25th
October
2017 at SRPC, Bengaluru. (Minutes available on SRPC website). The following is updated
status with regard to availability of RE SCADA:
State SCADA availability as on
31.01.2018 Mapped I/C
Remarks
AP Wind: 3700/3820 MW (96.86%)
Solar: 1901/2145 MW (88.62%)
Total: 5601/5965 MW (93.90%)
Pending SCADA availability was for RE
connected distribution level and for which
action had been taken for compliance.
TS Wind: 101/101 MW (100%)
Solar: 2960/3198 MW (92.56%)
Total: 3061/3299 MW (92.79%)
Action for balance SCADA availability at
33 kV and below was being followed up
and notices had been issued.
KA Wind: 3504/3504 MW (100%)
Solar: 3079/3244 MW (94.91%)
Total: 6583/6748 MW (97.55%)
KE Wind: 16/59 MW (27.11%)
Solar: 71/91 MW (78.02%)
Total: 87/150 MW (58%)
TN Wind: 6342/7910 MW (80.18%)
Solar: 648/1950 MW (33.23%)
Total: 6990/9860 MW (70.89%)
Notices had been issued for SS under
10(1) for SCADA availability. 100%
SCADA availability of wind was likely to
be ensured by December 2017.
TANTRANSCO (Communication) and
TANGEDCO (Metering) had jointly
initiated action for Solar SCADA
availability and was targeted to be
completed by March 2018.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 24
10.2 In respect of REMC project, it had been noted that sanction of GoI had been received
during September 2017 and implementation schedule was of 14 months. First kick off
Meeting was conducted on 01st November 2017 at PGCIL office. Site survey at SRLDC
had also been concluded.
10.3 SRPC noted the above.
11. TERMS OF REFERENCE FOR RENEWABLE INTEGRATION – TASK FORCE
11.1 In line with the decision taken in the 30th
Meeting of SRPC, Terms of Reference (TOR)
were finalized after consultation with stakeholders in the Subcommittee/Special Meetings.
The objective was to have a Study/Report on the TOR, by means of engaging a
Consultant. Constituent states of SRPC had agreed to share the financial commitment
equally.
11.2 The following had been noted in 32nd
Meeting of SRPC:
States may need to fund this study or else the study could be dropped.
Separate Meeting would be conducted with participation from Constituents‟ / RE
Developers. TANTRANSCO consented to coordinate participation of RE Developers.
11.3 Subsequently, Chairperson, SRPC vide letter dated 12.12.2017 (Annexure-XXV)
addressed to MNRE had proposed that certain specific studies could get initiated under
IGEN – GEC Project being implemented by GIZ in India on behalf of the German
Federal Ministry of Economic Cooperation and Development (BMZ). The following
studies were proposed to be taken up:
Ancillary Services from RE and controlling RE generation from REMC / SCADA
during contingency.
Assessment of balancing requirement, type requirement by each state for meeting RE
target by 2022. Suggesting suitable modality of AGC at the state level.
SRPC deliberations
11.4 SRPC noted that the proposal under Indo German Energy Programme (Green Energy
Corridor) being implemented by GIZ was under consideration of MNRE. Ancillary
Services and Assessment of balancing requirement were sought to be covered under this
proposal.
12. MONITORING OF SCHEMES FUNDED FROM PSDF
12.1 In the 7th
Meeting of NPC held on 08.09.2017 (MOM at Annexure-XXVI) RPCs had
been further requested to examine the implementation of PSDF funded schemes in OCC
& TCC meetings and intimate NPC about any bottlenecks.
12.2 The 6th
Meeting of the Monitoring Group of PSDF was held on 05th
January 2018 at
Kochi. It was observed in the Monitoring Group that the overall progress was not very
satisfactory. There had been delays in signing of the Agreement, seeking release of the
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 25
first installment etc. Overall, physical progress actually achieved in respect of schemes
was also not very satisfactory. It had been emphasized in that Meeting that better
utilization was highly essential, especially since progress was also being monitored by
MoP. Out of total grant of Rs. 2080.52 Cr for SR, the disbursed amount was Rs. 161.83 Cr
only (around 8 %) as on 22.12.2017. Letter dated 11th
January 2018 in this regard to SRPC
constituent states is given at Annexure-XXVII. The detailed status is given in Annexure-
XXVIII. Overall status of schemes in SR as on 22.12.2017 is given below:
Sl.
No
.
Region/
entity
Schemes Amount (in Rs. Crore)
Received Sanctioned Under
approval
Input
sought
Recently
received
Not
eligible
Grant
sanctioned
Disbursed
1 AP 5 3 0 1 0 1 295.2 31.52
2 KAR 5 2 0 1 2 0 78.27 26.85
3 KER 7 6 0 0 0 1 581.8 23.30
4 TN 11 4 0 2 5 0 459.39 13.10
5 TS 12 5 0 3 4 0 247.72 24.96
6 PUDU 2 1 0 1 0 0 9.5 0.95
7 PG-SR 1 1 0 0 0 0 378.04 37.80
8 SRPC 2 2 0 0 0 0 30.59 19.01
Total 45 24 0 8 11 2 2080.52 161.83
12.3 The following had been noted in the TCC Meeting:
Chief Engineer (NPC), CEA had informed that about Rs 10,000 Cr (101 proposals) had
been earmarked for various DPRs sanctioned, leaving an amount of Rs 3,360. More than
70 DPRs were also under consideration which could require around Rs 8,000 Cr.
Further, the inflows to the fund during 2017 -18 had considerably reduced (less than Rs
350 Cr till now) and only around Rs 400 Cr was anticipated. This was due to better
discipline by the constituents and also due to the fact that majority of funds was getting
depleted due to RRAS.
APGENCO had expressed concern over the curtailments on the already submitted DPRs
and on the fund release difficulties at NLDC.
Chief Engineer (NPC), CEA had stated that there was clarity on the sanctioned schemes /
amount. There were 24 schemes of SR for which around Rs 2,000 Cr was sanctioned,
while issue was with regard to meager disbursement of around Rs 160 Cr. Higher bodies
were even considering de-sanctioning of those projects in case of inadequate utilization
of fund. All entities were requested to avail the PSDF grant and complete the projects as
per identified timelines. There had some improvement after the Kochi Meeting since new
request for disbursement of Rs 100 crores had been received.
SRPC deliberations
12.4 SRPC requested the constituents to expedite the projects and also availing of the funds in a
time bound manner.
13. ROADMAP TO OPERATIONALISE RESERVES IN THE COUNTRY
13.1 In the 29th
Meeting of SRPC it had been noted that in the matter of Roadmap to
operationalize Reserves in the country, Hon‟ble CERC vide Order dated 13.10.2015 on
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 26
Petition No. 11/SM/2015 had directed as follows:
(b) The Commission reiterates the need for mandating Primary Reserves as well as
Automatic Generation Control (AGC) for enabling Secondary Reserves.
(i) All generating stations that are regional entities must plan to operationalize AGC
along with reliable telemetry and communication by 1st April, 2017.
(iii) The Central Commission advises the State Commissions to issue orders for intra-
state generators in line with this timeline as AGC is essential for reliable operation
of India‟s large inter-connected grid.
(c) To start with, a regulated framework in line with the Ancillary Services Regulations
would need be evolved for identification and utilizing of spinning reserves and
implemented with effect from 1st April, 2016. This framework may continue till 31
st
March, 2017.
……………
(d) In the long term, however, a market based framework is required for efficient
provision of secondary reserves from all generators across the country. For this,
NLDC/POSOCO is directed to commission a detailed study through a consultant and
suggest a proposal to the Commission for implementation by 1st April, 2017, giving
due consideration to the experience gained in the implementation of Spinning
Reserves w.e.f. 1st April, 2016.
13.2 In earlier Meetings the following had been noted:
NLDC had informed that mock drill test for about one hour had been conducted at
Dadri. Unit-5 & 6 had responded well and based on that they had filed the Petition.
NLDC had informed the Team had visited Simhadri and it was possible to extend
AGC signal. The details had been communicated to NTPC HQ and further
discussions were likely to take place shortly. Team from NLDC/SRLDC had also
visited NP Kunta and a meeting of the stakeholders would be called.
13.3 Hon‟ble CERC in Petition No. 79/RC/2017 vide Order dated 6th
December, 2017 in the
matter of „Automatic Generation Control (AGC) pilot project‟ had summed the decisions
as follows:
„80. The Commission feels that the implementation of the AGC pilot project is a way
forward in the direction of having adequate reserves to ensure secure grid
operation as also mandated by the National Electricity Policy. The Commission
acknowledges and appreciates the efforts undertaken by NLDC and NTPC for
implementation of this AGC pilot project. The development of secondary reserves
in the country will lead to grid security and reliability. The Commission is pleased
to approve the Commissioning of the AGC Pilot Project between NLDC and NTPC
Dadri Stage-II.
81. Issue No. 1: The Commission finds that 5-minute accounting is possible for this
project, and directs that the same should be implemented for improved record of
AGC signal and the up/down response of the plant. This data will also be utilized
for payment purposes for the mark-up. Settlement of energy charges and deviation
charges shall continue to be on the basis of 15-minute time block.
82. Issue No. 2:The Commission accepts the Petitioner‟s proposal that 50p/unit shall
be the mark-up for both positive AGC generation and negative AGC reduction.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 27
83. Issue No. 3: Quantum (MWh) provided under AGC shall be deducted to arrive at
the net deviation as follows:
Net MWh deviation = (Actual MWh)-(Scheduled MWh)-(AGC MWh).
The generator shall pay deviation charges as per the DSM Regulations according
to this computation.
84. Issue No. 4:The Commission accepts the proposal of the Petitioner that the fixed
cost shall continue to be paid by the beneficiaries while the generator shall be paid
a mark-up at 50p/unit for both positive AGC MWh generation and negative AGC
MWh reduction. Generator shall be paid variable charges (as submitted under
RRAS) from the DSM Pool for quantum of energy generated (positive AGC) and
the same shall be paid by the generator to the DSM Pool for energy reduced
(negative AGC).
85. Issue No. 5: The Commission is of the view that on days when full capacity is
requisitioned, ear-marking a quantum of reserves might not be feasible at this
juncture and needs to be further deliberated with stakeholders. Similarly, the
proposal of allowing regulation down when the schedule is at technical minimum is
not agreed at this stage as it needs further examination in terms of technical
feasibility and impact of going below technical minimum.
86. The Commission directs that similar pilot projects may be replicated by NLDC, in
at least one other regional grid of the country.
87. The Commission would also advise the stakeholders to endeavour to extend optical
fibre connectivity to maximum number of power plants under the control area
jurisdiction of RLDCs so that technical feasibility for participation of more
generating stations under AGC is created.‟
13.4 In the OCC Meeting, NLDC had informed that the AGC for Dadri Units has been put in
place from 04.01.2018. In the 7th
Meeting of NPC (refer Annexure-XXVI) held on
08.09.2017, two aspects had been deliberated as given below:
AGC is the requirement of system operation where in generators had to participate in
frequency regulation.
Ramification of implementation of AGC on tariff.
It had been felt by NPC forum that since this issue pertains to generators and Discoms, it
could be discussed at RPC level. Discussion could include aspects of implementation of
primary and tertiary control also. For this, agenda would be prepared by POSOCO and
routed through NPC Secretariat so as to have commonality and National perspective.
Chief Engineer, NPC vide letter dated 06.02.2018 (Annexure-XXIX) had forwarded the
agenda on AGC for discussion in the TCC/SRPC Meetings. This Agenda had been
prepared by POSOCO as agreed in the 7th
Meeting of NPC.
13.5 Hon‟ble CERC vide Order dated 27.04.2017 had constituted an Expert Group chaired by
Member, CERC with Representatives from CEA, POSOCO and CTU and others
concerned. The mandate was to suggest further steps required to bring power system
operation closer to the national reference frequency of 50 Hz. The Terms of Reference
(TOR) of the Committee were as under:
Review the experience of grid operation in India
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 28
Review international experience and practices on grid operation including
standards/requirement of reference frequency.
Review the existing operational band of frequency with due regard to the need for safe,
secure and reliable operation of the grid.
Review the principles of Deviation Settlement Mechanism (DSM) rates, including their
linkage with frequency in the light of the emerging market realities.
Any other matter related to above.
The Report on first three TORs pertaining to frequency control in India had been uploaded
in the website of CERC.
13.6 The following had been noted in the TCC meeting:
NLDC had made a Presentation on „Introduction of Secondary Frequency Control
in Indian Power System‟ (Annexure-XXX). Frequency Variation Index (FVI) was
0.02 for India (much improved for the country) compared to 0.0036 of Central Europe.
The Frequency Control Continuum in India was explained differentiating inertial,
primary, secondary, fast tertiary, slow tertiary, generation scheduling/market and unit
commitment. The timeline of activities, Area Control Error (ACE), data flow in AGC
project, Architecture of the project and other issues were also presented.
Number of issues had been submitted by NPC / NLDC for discussion in the RPC
Forum. It was decided that AGC issues raised by NLDC/NPC would be discussed in a
Special Meeting. Generators, STU, Discoms & SLDCs were requested to kindly study
and attend the Meeting.
NLDC had informed that in respect of AGC at Simhadri, offer had been received from
M/s Siemens. They would convene a Meeting with NTPC on 20th
February and then
the Order would be placed with implementation schedule of 5 to 6 months. Regarding
AGC at NP Kunta, M/s USAID had agreed to take the AGC implementation under
GTG project. On 10.02.2018, after assessment it had been concluded that AGC
implementation at NP Kunta was feasible. A Meeting was planned in about 2 weeks
time. AP utilities as well as SERC were required to be consulted in this regard.
On a query about approval from CERC for AGC at Simhadri, NLDC had clarified that
in its Order, Hon‟ble Commission had agreed for AGC Pilot Project on similar
framework in other region.
13.7 SRPC noted the above.
14. TTC/ATC
14.1 In earlier Meetings the following had been noted:
In the 4th
Meeting of NPC held on 10th
December 2015 (MoM dated 1.1.2016), it had
been decided that to begin with, power system study for assessment of operational
limits / power transfer capability for each state would be done by the concerned
RLDC in association with concerned SLDC. Monthly TTC/ATC would be uploaded
by SLDCs in their respective websites and also communicated to concerned RLDC &
NLDC subsequently.
Converged PSSE base cases to be furnished to SRLDC.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 29
APTRANSCO had informed that nominations for Nodal Officer and Study Group
would be communicated within a month (Sep 2017) from the new recruitees likely to
join shortly.
14.2 The following is the status in this regard:
State 5
months
LGB
Converged
PSSE Base
case
ATC/TTC
Computation
furnished to
SRLDC
ATC/TTC
Computation
posted on SLDC
website
Nodal
Officer
Status
Study
Group
AP Yes No No No No No
TS Yes Yes No No Yes Yes
KAR Yes Unconverged No No No Yes
TN Yes Yes Yes No Yes Yes
KER Yes Yes Yes No Yes Yes
14.3 The following had been noted in the TCC Meeting:
APSLDC had assured that the system would be in place before the next SRPC
Meeting.
KAR-SLDC had informed that the converged case was being furnished, while Nodal
Officer details would be furnished within a week.
TSTRANSCO had stated that though details were being worked out, the same was not
being put on the web site.
SRLDC had informed that Special Training also could be arranged on any request of
the state utilities.
SRPC noted the above.
14.4 Enhancement in TTC of Southern Region
14.4.1 Revival of TTC/ATC of 500 MW for 10 hrs on Talcher-Kolar HVDC had been taken
up by Chairperson, SRPC (vide letter dated 18.05.2017). This issue was also
discussed in the Meeting convened by NPC on 23.10.2017 (MOM dated 01.11.2017
enclosed as Annexure-XXXI). In the Meeting, it was noted that, „it was decided that
since this issue had been discussed in SRPC for a long time, hence there is a need for
NLDC to come up with the reasons behind the requirement of keeping this additional
margin. These reasons could then be studied through simulation at SRPC level for
their acceptance. NLDC may submit the reasons of keeping additional margin to
SRPC and NPC Division, CEA within two weeks‟.
14.4.2 NLDC vide letter dated 07.12.2017 (relevant portion at Annexure-XXXII) had
communicated its views on this matter to NPC.
14.5 Harmonization of Philosophy of Computation of Total Transfer Capability (TTC)
by POSOCO and CTU between ER-SR & WR-SR
14.5.1 During the Study Meeting held at SRPC on 01.09.2017, it had been noted that CTU
and POSOCO were using different philosophies to compute TTC. This issue was
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 30
discussed in a Special Meeting conveyed by NPC on 23rd
October 2017 (refer
Annexure-XXVI). After deliberations, Members had agreed for the following
approach for preparing base load flow case to compute TTC/ATC for the purpose of
operationalization and grant of MTOA:
I. Demand:
As per CEA‟s LGBR/EPS.
II. Generation dispatch priority for base case for calculation of TTC/ATC:
1. MoP Allocations as accepted (Net of Auxiliary Consumption)
2. LTA granted & operationalized & CoD of generation plant achieved.
3. LTA granted on target region and operationalized on target region.
4. MTOA already granted
5. State Generations/State Controlled IPPs (based on historical dispatches)
6. Inter State Generating Stations (ISGS) (including selling under Short term)
Note:
1. In the base case, if the loads get met on considering dispatches from S1.1 to 5,
then S1.6 may not be considered.
2. Any gap can be met from the Short term capacity based on historical
dispatches.
3. For dispatch of Inter State Generating Stations (ISGS) capacities selling under
short-term, CTU may consider dispatches on proportionate basis.
4. Base case to be prepared on all-India basis.
14.5.2 The following had been noted in the TCC Meeting:
TCC had placed on record appreciation of NPC for having converged regarding base
case preparation for grant of MTOA. NPC was requested to similarly kindly finalize
procedure for base case preparation by POSOCO, in respect of STOA.
SRPC noted the above.
14.6 TTC Revision beyond the approved/scheduled time of revival
14.6.1 In the 32nd
Meeting of SRPC, after deliberations, it had been agreed that PGCIL would
communicate the revival status at least 2-3 hours before scheduled revival time.
NLDC was suggested to kindly restore the TTC at scheduled revival time in its
TTC/ATC declaration on website.
14.6.2 SRPC vide letter dated 17.10.2017 (Annexure-XXXIII) had taken up this matter with
NLDC. NLDC vide letter dated 24.10.2017 (Annexure-XXXIV) had stated that as per
CERC Order dated 22.02.2014 in Petition No.167/Suo-moto/2012 (para 61), NLDC
had been advised to take care of protocols while allowing collective transactions for
the next day. The same is reproduced below and is self-explanatory:
„In view of the above discussion, we advice NLDC to care of the protocols given below
while allowing collective transactions for the next day:
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 31
I. The lines which are within a region and not part of limiting constraints or
credible contingencies may be considered under service at scheduled revival
time. Prior to scheduled revival time, status shall be reconfirmed and if
necessary, transaction shall be rescheduled in case the line has not been
restored.
II. The transmission lines which are inter-regional or part of limiting constraints
or credible contingencies shall not be considered to be in service till these are
actually brought back into service. After putting revival status on web site of
NLDC, the margin shall be released for contingency market, if required.‟
NLDC had thus been curtailing TTC/ATC till 24.00 hrs and once it was known to
constituents that ATC/TTC is curtailed up to 24.00 hrs; power procurement planning
could be carried out by them in advance.
14.6.3 SRPC noted that this procedure being followed by POSOCO was as per provisions of
CERC Order.
14.7 TTC/ATC enhancement – Operational guidelines issued by NRCE
14.7.1 SRPC vide letters dated 13.11.2017 and 20.11.2017 (Annexure-XXXV) had requested
POSOCO to assess the possibility of TTC/ATC enhancement as per operational
guideline for determination of TTC, ATC and TRM for short term horizon (0-3
months) issued by NRCE, keeping in view high demand (Jan-Apr), coal shortage
conditions etc.
14.7.2 The following had been noted in the TCC Meeting:
MS, SRPC had stated that despite follow up there appeared to be no tangible
progress in this regard. SRPC Secretariat was willing to render assistance in
obtaining the required information but the objective should be to implement the
guideline. Any additional TTC/ATC would be quite helpful in time of contingency
and in availing cheaper power.
NLDC had stated that all required information of SR had been received and
temperature dependent ratings were being considered for SR.
NPC had informed that NRCE had requested transmission licensees to furnish the
details of temperature dependent thermal ratings of terminal equipment and lines.
Most of the information was to be furnished by PGCIL. A follow up letter had also
been issued by NPC.
TCC had requested PGCIL and the concerned entities to kindly furnish the
requisite information at the earliest.
SRPC noted the above.
14.8 Talcher-Kolar HVDC S/D
14.8.1 In the OCCM, OCC had recommended that outage of Talcher-Kolar be planned before
December every year (to be followed from 2018-19 onwards). SRTS II may please
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 32
kindly appraise their Management in this regard. OCC also suggested that the matter
be further discussed in the ensuing Meetings of TCC/SRPC.
14.8.2 KSEBL vide letter dated 12.02.2018 (Annexure-XXXVI) had stated that annual
shutdown of Talcher-Kolar HVDC link had earlier been availed during March 2017.
This shutdown during high demand period was objected by all constituents. This year,
shutdown had been availed during January 2018. The work was scheduled and again
rescheduled in January 2018 on account of difficulty in getting man power during
Pongal/Sankranthi. The HVDC link is highly critical in importing power to SR. In
view of load generation balance issues, it was suggested that next maintenance may be
availed before Christmas for the 2018-19 block. It was also requested that annual
overhauling of any of the Talcher units may also be planned concurrently so as to
avoid bottling up of generation.
14.8.3 The following had been noted in the TCC Meeting:
PGCIL had stated that this major activity was to be planned and coordinated with
three regions along-with foreign experts also. There were some issues with regard to
standing crop during Nov/Dec, on account of which this period was to be avoided.
TCC had recommended that shutdown of Talcher-Kolar needs to be availed before
Christmas holidays every year and possibly link it with shutdown of Talcher Stage
II Unit.
PGCIL had assured they would plan the shutdown accordingly, in future.
SRPC noted the above.
15 STATUS OF DC IN ISGS
15.1 Issue regarding low DC at NLC TS-II Expansion, NTECL and NTPL had been
deliberated in earlier Meetings of SRPC. Level of generation of some ISG stations is
given below:
15.2 The following had been noted in earlier Meetings:
NLC had informed that while refractory problems had been rectified, some boiler tube
leakages were surfacing. They had taken up the matter with M/s BHEL and some
modification had been suggested. After material arrival, works would be taken up and
reliability may increase within 3-4 months (by Dec 2017). They had demonstrated
500 MW and were putting all efforts and hopeful of improved performance.
Station Aug-17 Sep-17 Oct-17 Nov-17 Dec-17 Jan-18
NTECL,
Vallur
DC % 60.52 48.59 50.37 68.13 64.36 61.07
PLF (on Actual)
%
49.96 44.25 44.15 51.72 50.97 48.23
NTPL,
Tuticorin
DC % 83.38 28.16 58.10 81.40 99.55 100.15
PLF (on Actual) 76.08 25.40 48.50 64.80 70.83 70.89
NLC TS
II Exp
DC % 22.02 48.82 40.34 61.91 25.62 69.23
PLF (on Actual) 21.18 48.44 40.98 61.46 26.66 67.92
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 33
NTPL had informed that they had availed two overhauls and performance would
increase. Presently, the availability was 100 %.
NTECL had informed that Unit-3 was expected back by first week of Jan 2018.
15.3 The following had been noted in the TCC Meeting:
MS, SRPC had informed that the loss in DC wrt normative was 956/272/356 MW
during Nov 2017/Dec 2017/Jan 2018 respectively. Some ISGS (Simhadri-II: 84.80%,
Simhadri-I: 78.32%; Kudgi: 81.24%, NLC II- Stage I: 81.07% NTECL: 67.04%,
NLC II Exp: 50.27% & NTPL: 76.71%) were below the target availability also on a
cumulative basis. While scheduling right is with beneficiary, DC being the sole
prerogative of generator, not being able to meet target availability was a matter of
concern.
NTECL had informed that complete replacement of lube oil lines had been taken for
restoration of the unit after the fire incident. On 6th
January 2018, machine had been
rolled up to 3,000 rpm and vibration was within limit, but then two bearing had failed
(due to entry of foreign material). Therefore, complete filtration had been taken up
(generally done for new machines). The third Unit was now planned to be back on
bars on 21st February 2018. Coal stock was available for 17 days and by the year end,
about 70 % PAF could be achieved (presently 67.04%).
NTPL had informed that 726 MU of energy was lost during the months of September
to November 2017 on account of coal shortage. Till July 2017, PAF had been 95 %.
For the months of December to February (till date) the availability was around 100
%. They were likely to achieve about 80 % PAF by the year end (presently 77 %)
NLC had informed that the TS II Expansion station was now having availability of
75-80 %. Some modification works through OEM had been planned and full
availability was expected during the first quarter of 2018-19.
SRPC deliberations
15.4 Director (P), NLC stated that in respect of TS-II Exp station, all issues had been identified,
and after modification works planned during April 2018, the DC would be maximized. He
stated that NLCIL being a miner & generator, 55 % Technical Minimum during wind
season was affecting its mining operations also. Only about 50 % of surrender was being
offered for trading. AP, Karnataka, Kerala, TN, Telangana and Puducherry had given
(consent MU) / (total surrender MU) of 0/273, 0/41, 4/39, 1048/1699, 263/567 and 61/185
for the period April 2017 to January 2018. Around 8-10 MUs/day of trading option was
being lost. He emphasized that the profit is also being shared with beneficiaries. He
therefore requested the states to maximize the concurrence for trading. Traded quantum of
energy should not be considered for ensuring station schedule above or equal to technical
minimum.
15.5 NTPC also requested for maximization of consent for trading.
15.6 It was noted that some of the URS quantum is being maintained by states as spinning
reserve. It was also informed that sum of schedule of beneficiaries plus traded quantum is
ensured above or equal to technical minimum. This practice was in line with the prevailing
Regulations and had been informed earlier to NLCIL.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 34
15.7 Chairperson, SRPC suggested optimization with regard to communication of consent to
ISGS for trading.
16 FREQUENT TRIPPING OF 765 KV AND 400 KV LINES AND SUSTAINED
OPERATION OF ELEMENTS UNDER HIGH VOLTAGE
16.1 Frequent tripping of 765kV Lines on Over Voltage and Daily Hand Tripping of
765kV Raichur – Kurnool & Nizamabad – Maheshwaram Lines – Stress on EHV
equipment
16.1.1 PGCIL vide letter dated 09.01.2018 (Annexure-XXXVII) had referred to frequent
tripping and switching of 765 kV and 400 kV elements on account of over voltage in
the system. During the past 6 months there had been 120 Nos. of 765 kV Line trippings
on account of operation of Over Voltage Protection and 188 Nos. of Hand Tripping of
765 kV & 400 kV Lines for voltage regulation.
16.1.2 On a daily basis, SRLDC was issuing codes for taking 765 kV Raichur – Kurnool ckt 2
(without LR) and 765 kV Nizamabad – Maheshwaram Line 1 or 2 out of service,
(during night) and taking back into service early morning. Average power flow on
above 765 kV lines was only about 250 MW to 500 MW each during off peak and peak
hours.
16.1.3 On account of high voltage in the system and also due to frequent tripping/switching of
765 kV and 400 kV Lines, the EHV & GIS equipment are getting over stressed and
prone to early failure.
16.1.4 Instead of operating the lines in and out on daily basis, alternate methods of operation
could be explored.
16.1.5 The following had been noted in the TCC Meeting:
PGCIL had expressed concern over frequent operation of breakers and sustained
operation of elements on high voltage. This was stressing the equipment and
making them prone to failure. In case of double circuit lines, one of the lines was
being opened on rotation basis. It would be better in case, a line is allowed to be
kept open for say 15 days continuously so as to minimize number of breaker
operations.
SR-II had stated that in some cases it is well known that line would be taken out
due to overvoltage (as night progresses). Then SRLDC need not wait till voltage
reach > 430 kV (sometimes line are tripping on overvoltage). A preemptive
decision could be taken to take out the line in such circumstances so as to avoid
unnecessary stress on equipment.
POSOCO had stated that opening of lines was being undertaken as a last resort.
Sometimes a line was to be taken in/out on daily basis since intra-day variations
were quite significant. There were associated reliability issues also. However, they
would examine this matter and consider minimizing number of breaker operations
and preemptive taking out of lines.
SRPC noted the above.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 35
16.2 Issue of prevailing over voltages in SR Grid
16.2.1 PGCIL vide letter dated 09.01.2018 (refer Annexure-XXXVII) had stated that over
voltages are prevailing in SR Grid despite utilization of services of Reactors and
tripping of lightly loaded transmission lines especially during night hours during last 6
months. These over voltages lead to over stress to substation equipment including
ICTs, Reactors, CVTs, CTs etc. Life span of equipment was also affected adversely
leading to early failures. The following substations were mostly experiencing over
voltages in SRTS-2.
I. (i) Karaikudi, (ii) Karur (iii) Sriperumbudur.
II. (ii) Tumkur, (ii) Bidadi, (iii) Mysore, (iv) Narendra (v) Hassan
16.2.2 In the operational feedback, POSOCO for the quarter (July-September 2017) had
highlighted high voltage nodes (25 nodes at 400 kV & 765 kV). List of lines which
were opened by real time operators to control over voltage in the grid were also
displayed.
16.2.3 In the 136th
Meeting of OCC, SRLDC had observed that 400 kV voltages at NP Kunta
substation were above 410 kV for considerable time (more than 50 %) and some of the
days though out the day. At present settings at STATCOM are at 420 kV & 380 kV, and
it was noted that available STATCOM could not be effectively utilized for mitigating
high voltage. Powergrid had been requested to revise voltage settings to 410 kV.
Subsequently, vide letter dated 20.10.2017 SRLDC had requested Powergrid to revise
the present voltage settings to 390 kV and 410 kV at the earliest. The confirmation from
PGCIL in this regard was awaited.
16.2.4 The following had been noted in the TCC Meeting:
Details of nodes of high voltage coupled with MVAR injection during October
2017 to January 2018 are given below:
Nodes with MVAR injection during V > 103%
AP KAR KER TN TS
Cuddapah Bidadi Kochi Alamathy Gajwel
Chittoor Munirabad Trivandrum Kalavinthapattu Hyderabad
Gazuwaka Mysore
Karaikudi Khammam
Kurnool Madhugiri
Pugalur Mehaboobnagar
Nellore PG Nelamangala
S V Chatram Malkaram
NP Kunta Pavagada
Trichy Warangal
Vijayawada Raichur
Dichipally
Maheshwaram
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 36
Payments being on net basis in Reactive Energy Account, this operational
requirement is not getting adequately highlighted, since MVAR injection at high
voltage needs to be avoided as per IEGC provisions.
SRLDC had expressed concern over high voltage at number of other 765 kV & 400
kV nodes for considerable duration of time. High voltage was getting severe during
night times when solar generation is not there, loads are minimal, line loadings are
very less etc.
TSTRANSCO had stated that VAR injection of solar generators during night times
needs to be restricted and there should be a Regulatory mechanism with more
clarity on this issue.
CE (NPC) had suggested that during night, solar generators could be considered as
load. Thus, similar provisions as for loads (in the state) could be made applicable to
them.
Concerned TRANSCOs had been requested to kindly take appropriate action in this
regard. Issue of high voltage could be further taken up in the Standing Committee
on Power System Planning to ascertain whether there was any further need for
reactors.
PGCIL had informed that set points of NP Kunta Statcom had been modified to
390 kV and 410 kV. TCC had thanked PGCIL for having implemented the revised
set points in the NP Kunta Statcom.
SRPC noted the above.
17 ISSUES IN RESPECT OF NPCIL
SRPC vide letter dated 23.11.2017 (Annexure-XXXVIII) had taken up certain pending
issues with NPCIL. NPCIL vide letter dated 24.11.2017 (Annexure-XXXIX) had replied
to this SRPC letter. A Special Meeting with NPCIL was also conducted on 11th
January
2018 to discuss the pending issues (MOM available on SRPC website).
17.1 Balance dues from Beneficiaries
Issue of outstanding dues to NPCIL of Southern Region beneficiaries had been discussed
in the 32nd
Meeting of SRPC. All beneficiaries had assured affirmative action in this
regard. NPCIL vide letter dated 24.11.2017 had expressed concern and stated that the
situation had worsened. The outstanding dues to NPCIL as on 31.10.2017 are as follows:
Utility Amount
TNEB Rs.1270 Crores
KARNATAKA Rs.436 Crores
APTRANSCO Rs.20 Crores
TELANGANA Rs.115 Crores
SRPC vide letter dated 29.11.2017 (Annexure-XL) had taken up this issue with
beneficiaries for expediting and settling the dues at the earliest.
Subsequently, Director (Finance), NPCIL vide letter dated 01.02.2018 (Annexure-XLI)
had again brought attention the high outstanding dues of NPCIL for more than 60 days. As
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 37
per statement enclosed, an amount of Rs. 1,045 Cores was outstanding from various state
utilities to NPCIL. Concerned utilities had been requested to kindly arrange action to clear
outstanding dues to NPCIL.
TCC deliberations
KPTCL informed that PCKL had taken up this matter with all Discoms.
TANGEDCO/TSTRANSCO had assured of early settlement of dues.
NPCIL had expressed grave concern on the non-timely clearance of the dues.
Constituents were again requested to kindly clear the dues at the earliest.
SRPC requested the constituents to kindly clear the dues at an early date.
17.2 Part load operation of KKNPP Unit-II
KKNPP Unit-II had been revived on 20.11.2017 after prolonged outage since
04.08.2017. It was noted in the OCCM that Unit would be taken out for refueling after 3
months of full load of operation. OCC (in 137th
, 138th
& 139th
Meetings) had
recommended that this unit needs to be on bars till end of March 2018 which could be
possible through part load operation of the unit. SRPC vide letter dated 23.11.2017 had
taken up this issue with NPCIL. NPCIL vide letter dated 24.11.2017 had informed that
the request has been duly communicated to Director (Operation), NPCIL for
consideration. In the Meeting held on 11.01.2018, KKNPP/NPCIL citing
technical/economic constraints had stated that the unit would be taken out on
01.03.2018. TANTRANSCO vide letter dated 11.01.2018 (Annexure-XLII) had again
requested NPCIL to operate Unit-II at KKNPP on partial load till end of March 2018 as
done in earlier occasion. Else, the schedule outage may be postponed to June 2018 for
benefit of Southern Region. KKNPP/NPCIL was once again requested to consider this
request of OCC for part load operation upto end of March 2018.
TCC deliberations
TANTRANCO had expressed concern that KKNPP being a large unit ( 1,000 MW),
its frequent forced outage, delay in revival (beyond schedule), taking out of unit
during peak months , not considering part load operation etc was making the task of
system operators further difficult. All NPCIL units should be planned for
maintenance only during June to December each year. With higher RE penetration,
NPCIL units need to offer some flexibility (seasonal, part load etc) which was need
of the hour.
NPCIL had informed that as noted in the 11th
January 2018 Meeting, part load
operation of unit was not possible on account of various technical/commercial
constraints. Performance of nuclear units was very stable and only during forced
outages/equipment problems, there had been some delay. At KKNPP, all the
equipment are imported, which has its inherent delay. Kaiga units had created record
of maximum running days. Forced outages happen despite taking all measures and
these have to be attended. As informed in last SRPC Meeting, maintenance of all
units of NPCIL of SR (except KKNPP) would be planned during June to December.
KKNPP has a 10 month (300 days) cycle and thus maintenance has to be availed as
per that cycle. In future, the cycle could increase to 18 months (after 5-6 cycles of 10
months) and at that time some flexibility could be considered.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 38
It was noted that commercial issues should not be linked with technical issues in
respect of part load operation. NPCIL had stated that technical issues as being
highlighted are the main reason for not agreeing to part load operation. However,
commercial issues of NPCIL (pending payment) should also not get ignored.
17.3 Closing of 2nd
ICT at KKNPP
In the OCC Meetings, it was noted that KKNPP was keeping one ICT permanently out
on 230 kV side (out of two ICTs). SRLDC had suggested closing the ICT which was
not complied by KKNPP. SRPC vide letter dated 20.11.2017 had taken up the issue
with SRLDC for compliance. SRLDC vide letter dated 07.12.2017 had also taken up
this issue with KKNPP. NPCIL vide letter dated 08.12.2017 had expressed their
concern over the issue. In the Meeting held on 11.01.2018, after deliberation, NPCIL
had agreed in principle to close both ICTs keeping in view the enhanced reliability (for
N-2) and reduced losses. Protection settings would be vetted by PRDC, SRLDC and
SRPC in coordination with NPCIL. NPCIL would take the final decision on the
protection settings and the ICTs would be closed. SRLDC assured of all necessary
assistance in case of any sustained overloading of KKNPP – SR Pudur line. Forum had
also requested TANTRANSCO to kindly ensure healthiness of KKNPP – SR Pudur
and KKNPP – Tuticorin lines.
TCC deliberations
NPCIL had informed that they would take 2nd
ICT in service and the vetting of
protection settings would be expedited.
TANTRANSCO had assured of adequate measures to ensure healthiness of 230
KV KKNPP – SR Pudur and KKNPP – Tuticorin lines.
17.4 Wrong operation of opening of Kaiga-Kadra line instead of Kaiga-Kodasalli line on
23.11.2017
In the Meeting held on 11.01.2018, KGS had informed that the issue regarding wrong
operation had been viewed seriously and necessary instructions had been
communicated for strict compliance to avoid recurrence of such incidents in future.
NPCIL also assured of corrective action in this regard.
17.5 Delay in charging 220 kV Kaiga-Kadra line on 23.11.2017 by NPCIL, Kaiga
Opening of Kaiga – Kadra line had resulted in 220 kV bus dead at Kadra and also 220
kV Karwar station (60 MW load) got interrupted. Kaiga was requested to charge 220
kV Kaiga – Kadra line at the earliest. It was noted with concern that despite continuous
efforts of SRLDC & KPTCL SLDC, Kaiga was reluctant to charge the line and for
more than two hours, instructions of SRLDC had not been complied. In the Meeting
held on 11.01.2018, after deliberations, it had been agreed that Kaiga GS, MAPS and
KKNPP would share details of the Control Room in-charge and Operation
Superintendent for single point contact during such emergent conditions. All
instructions of SRLDC would need to be complied say within 10 minutes. NPCIL
would pass necessary instruction in this regard to the stations (copy to be furnished to
SRPC/SRLDC). Necessary power would also be delegated to Control Room to ensure
compliance of SRLDC instructions in a time bound manner.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 39
TCC deliberations
NPCIL had informed that they had formulated a procedure for closing healthy lines
in the event of any inadvertent switching operations.
Details of single point contact would be communicated, wherever pending.
17.6 Black Start Mock Drill at Kaiga GS and MAPS
In the Meeting held on 11.01.2018, KGS had informed that Black Start Mock Drill
would be taken up during BSD of the units on similar lines to KKNPP. Unit-I BSD
was planned during July/August 2018. MAPS had communicated that BSRP for
MAPS had been prepared and communicated to M/s TANTRANSCO, LD Centre,
Chennai for review and approval. MAPS would conduct the mock drill under
intimation to SRLDC/SRPC. It was noted that MAPS unit-II BSD had been planned
during May/June 2018 shutdown.
TCC deliberations
Kaiga Unit –I BSD was planned during July/Aug 2018 and BSRP mock drill for
Stage I would be taken up at that time.
MAPS Unit is out and mock drill can be carried out. Procedure had been
communicated to TNSLDC.
MAPS/TNSLDC/SRLDC agreed to take up the mock drill.
17.7 PSS tuning / SRT
In the Meeting held on 11.01.2018, Kaiga GS had informed that the SRT for Unit-I
would be taken up after BSD (July/August 2018) in which, AVR was being planned to
be replaced with DVR and PSS tuning / SRT would be taken up. SRT of Unit-III
would be taken up after BSD (December 2018/January 2019). MAPS had
communicated that training had been conducted at NPCIL HQ in respect of PSS. It was
understood that NPCIL HQ would prepare a common procedure for sites for
conducting SRT. NPCIL had informed that they would coordinate and the SRT would
be undertaken around BSD for both the units. BSD for Unit-II was planned during
May-June 2018.
TCC deliberations
PSS tuning/SRT of Kaiga Unit –I would be taken up after BSD (July-Aug 2018).
PSS tuning/SRT of Kaiga Unit-III would be taken up during Dec 2018-Jan 2019.
MAPS Unit –II PSS tuning/SRT during May – June 2018.
SRPC noted the above.
17.8 MVAR inter-change analysis
In the Meeting held on 11.01.2018, KKNPP had agreed to revert back regarding
MVAR interchange for Unit-II (even for high voltages it was not absorbing). NPCIL
had also agreed to revert back on MVAR interchange for MAPS Unit-I & II which
were injecting even above 230 kV.
TCC deliberations
Regarding units injecting even above 230 KV, MAPS had stated that they would
look into this issue.
KKNPP would revert back regarding Unit-II MVAR interchange.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 40
17.9 MVAR testing for Kaiga GS Unit
In the Meeting held on 11.01.2018, Kaiga GS / NPCIL had agreed in principle for
MVAR testing of Kaiga GS units III/IV. SRLDC had assured that all concerns of
Kaiga GS would be adequately taken care.Testing would be well within the
capability/limiter set points and other temperature / load angle constraints. Dates for
testing would be communicated by Kaiga GS within 10 days.
TCC deliberations
NPCIL had informed that Kaiga Unit –IV MVAR testing could be conducted
(within capability curve and limiter setting).
17.10 2x125 MVAR Reactor commissioning at Kaiga GS
In the Meeting held on 11.01.2018, NPCIL had informed that the tender for one of the
reactor along with bay works was planned to be floated within 20 days. LOA was
likely to be placed within 6 months and they were hopeful to complete the reactor
commissioning by December 2019. For the other reactor, they were planning to
exchange 63 MVAR reactor with 125 MVAR reactor of PGCIL and they would get in
touch with PGCIL in this regard.
TCC deliberations
NPCIL had informed that one reactor would be commissioned by December 2019.
In respect of the 2nd
reactor, they would get in touch with PGCIL shortly.
17.11 Revival of Reactors under forced outage at KKNPP
In the Meeting held on 11.01.2018, KKNPP had informed that the bushing (imported)
for one of the reactor had been received and work order awarded. Works were planned
to be completed by 28th
February 2018.Rectification for the other reactor would be
taken up in April/May 2018 and expected to be completed by December 2018.
TCC deliberations
NPCIL had informed that first reactor had been commissioned on 14th
Feb 2018.
Second reactor would be revived by Dec 2018.
17.12 SCADA issues
In the Meeting held on 11.01.2018, regarding RTU it was concluded that
KKNPP/KGS may need to take up works through alternate vendor (M/s OSI was also
providing RTU services) as a long term solution. In the meantime, KKNPP could
pursue the matter with SR-II / KPTCL for the spare analog data card. NPCIL stations
were requested to attend the data discrepancy and pending field inputs in respect of
Kaiga GS, MAPS and KKNPP.
TCC deliberations
PGCIL has kindly made available the cards to NPCIL.
NPCIL had agreed to address the other issues.
17.13 Protection related issues
With regard to A/R implementation on MAPS lines, NPCIL had informed that
procurement of required line CVTs was under progress. Commissioning of CVTs
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 41
and A/R enabling on all the four 220 kV lines was targeted to be completed by
March 2018. MAPS had informed that PO for A/R facility was released for
procurement of the CVTs. A/R for the lines would be implemented after receiving
the CVTs.
With regard to A/R implementation for 220 kV KKNPP – SR Pudur line, NPCIL had
stated that they would revert back with details in the next Meeting of PCSC.
As part of GSC (Task-II), 220 kV Kaiga GS had been audited by M/s Tractebel
Engineering (TE) during 4-6 April 2016, when certain recommendations were given
for compliance. Status of compliance of these recommendations viz., separation /
redundancy wrt Differential and REF protections of ICT 1 & 2, disabling of Over
Current (67) protection on all 220 kV feeders, revising of LBB timing and time
synchronization of Main-I and Main II protections with GPS were discussed. KGS
was asked to kindly take steps to provide the same at the earliest and furnish latest
status in this regard to PCSC forum.
TCC deliberations
NPCIL had informed that Auto reclosure for MAPS line would be commissioned
by Sept 2018.
17.14 Delayed DC revision by Kaiga GS
Kaiga GS had been suggested to have redundant service provider for the internet (M/s
Powertel could be approached as OFC had been reportedly laid). The issue had been
earlier discussed and NPCIL station had assured of corrective action in this regard.
NPCIL had been requested to issue suitable guideline to the stations.
TCC deliberations
NPCIL had assured of reliable redundant internet connectivity. Also that DC
revision would be carried out prudently and in timely manner.
17.15 Testing schedule by KKNPP
SRLDC had informed that KKNPP was not getting testing schedule approved by OCC
and request was coming with 2-3 days of notice only. Testing activity was having
impact on the IR flows also and it would be prudent to inform and get the testing
schedule approved by OCC as was being done by KKNPP earlier. KKNPP/NPCIL had
assured of necessary compliance in this regard.
TCC deliberations
NPCIL had assured of communicating the testing schedule in a timely manner in
future.
17.16 Commercial Issues
SRLDC pointed out that Rs. 1,725 (interest) was due from KKNPP in the DSM
Account during the period of infirm injection when KKNPP was Member of the DSM
pool. KKNPP agreed for clearing the dues at the earliest.
SRLDC pointed out that for MAPS LV side GT, SEM values are not being
communicated (which were earlier being communicated). NPCIL agreed to look into
the matter.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 42
TCC deliberations
NPCIL had assured that balance dues would be cleared. Other issue regarding
communication of SEM values would also be addressed.
17.17 SRPC noted the above in respect of NPCIL issues.
18 UPCOMING TRANSMISSION SYSTEM
18.1 41st Standing Committee on PSPSR
Minutes of Meeting of 41st Meeting of Standing Committee on PSPSR (meeting held on
22.09.2017) had been issued on 06th
December 2017 (available on CEA web site).
SRPC noted the above
18.2 MOP Committee on POC
18.2.1 Ministry of Power vide Order dated 27.10.2017 (Annexure-XLIII) had constituted a
Committee to review transmission tariff including Point of Connection Charges (POC)
charges and suggested simple methodology for calculation of transmission tariff.
Representative from Karnataka was a Member of this Committee. Terms of Reference
(TOR) of the Committee are as follows:
a) Study the present mechanism of POC and recommend simplification of calculation
methodology for calculation of transmission charges.
b) To bring transparency in calculation of transmission charges (existing and at least
for the ensuing year) and the calculation on the public domain.
c) Any other issues relating to transmission tariff to meet stated objective.
On this subject, a Meeting was held at MoP on 24th
November 2017.
18.2.2 In Petition No. 12/SM/2017 along-with I.A. No. 54/2017, Hon‟ble CERC vide ROP for
date of hearing 14.09.2017 had noted, „….4. The Commission directed CTU to submit
on affidavit, on or before 5.10.2017, the details of LTA customers for whom LTAs had
not been operationalized in terms of Regulations 8(5) of the Sharing Regulations w.e.f.
1.5.2015.‟
TCC deliberations
TANGEDCO had stated that they would also like to be a Member of the MoP
Committee since some important issues were needed to be addressed.
It was noted that this Committee was to submit its report by 15th
Feb 2018.
It was also noted that views of TANGEDCO were placed under record by the
Committee under CERC. TANGEDCO had made a presentation to that Committee.
Also on 20th
February 2018, the CERC Committee was again scheduled to meet and
thus TANGEDCO could consider again approaching it appropriately.
SRPC noted the above.
18.3 Upcoming inter-regional transmission schemes
18.3.1 Updated status is furnished below please:
S S.No. Transmission Element Remarks
a) WR-SR 6000 MW HVDC Bipole
Link [Raigarh (Chhatisgarh) -
Pugalur-Trichur (TN/KER)]
Apr’ 2020
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 43
31st TCC:
PGCIL informed that the works at both the terminals had commenced. The
line works from Raigarh to Pugalur had started in all the regions (WR-I, SR-I
& SR-II). Top management was putting all efforts to complete the works by
December 2019. Efforts are also being made to advance it.
PGCIL (Dec 2017): Efforts being made to complete one pole by Mar
2019. 320 kV Pugalur-Trichur HVDC by Dec 2020.
32nd
TCC: 800 kV December 2018. 320 kV: September 2019.
b) 765 kV Angul - Srikakulam PS D/C
Corridor
Main corridor commissioned.
Other associated elements by July
2018.
31st TCC :
PGCIL informed that Garividi- Srikakulam PS was expected by March 2018.
APTRANSCO informed that the downstream system would also match.
Removal of constraints in Vemagiri area was expected to be completed by
October 2017. APTRANSCO expressed concern over the line loading issues
in Vemagiri area.
41st SCPSPSR:
It was agreed to drop the proposal of CTU for temporary Rearrangement
of 400 kV Vemagiri-I(AP)-Vemagiri-II(PG) D/C transmission line.
32nd
TCC: PGCIL informed that Garividi- Srikakulam PS was expected
by May/ June 2018. AP informed that downstream system is ready.
c) Additional inter-Regional AC link for
import to Southern Region, i.e.,
Warora - Warangal - Hyderabad-
Kurnool 765 kV link
TBCB, PFCCL- BPC Schedule was 40 months from the
transfer of SPV on 06.07.2016
(around Nov 2019).
Discussed in 36th
Meeting of
Empowered Committee held
26.07.16
Hon‟ble CERC in its Order dated
29.09.2016 in respect of Petition
No 111/TL/2016 had granted
Transmission License to Warora-
Kurnool Transmission Limited
(WKTL).
32nd
SRPC: PGCIL had informed that the line was under TBCB but bay
extension at Warangal, Hyderabad & Kurnool had already been started.
CEA (Nov 2017): Nov 2019.
32nd
TCC: There was a Meeting held to consider proponing of
Hyderabad-Kurnool line. It was concluded that further study may be
required before concurring for this preponement. One more Meeting
was to be held.
d) System strengthening within SR for
transmitting power beyond Vemagiri
TBCB- RECTPCL-BPC–Some
scope of work/ reactive
compensation modified.
Project has been awarded to
PGCIL under TBCB, and was
expected by April 2019.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 44
31st TCC:
PGCIL informed that 765 kV Vemagiri – Chilkaluripeta – Cuddapah D/C and
400 kV Cuddapah – Madhugiri D/C expected by Q1 of 2018-19.
41st SCPSPSR:
It was agreed to drop the proposal of CTU for temporary Rearrangement
of 400 kV Vemagiri-I(AP)-Vemagiri-II(PG) D/C transmission line.
It was agreed to hold a meeting in CEA for Early commissioning of
transmission scheme covered under “Strengthening of Transmission
system beyond Vemagiri” with CTU, LTTCs and the TSP.
32nd
TCC:
Chilkaluripeta – Cuddapah line was stuck up for want of wild life (Tiger
Conservation Reserve) clearance. It requires forest clearance from
AP/TS/Central Govts. They had taken up the issue since Tiger
Conservation Reserve is yet not in public domain, they may not to be
obligated to take this clearance. There were AP lines also stuck up due to
the same issue. The line would come up in Q3 of 2018-19.
Cuddapah – Madhugiri Q2 of 2018 – 19.
18.3.2 Updated detailed status of upcoming inter regional scheme is furnished at Annexure-
XLIV.
18.4 Pending transmission elements in WR and SR for proper utilization of 765 kV
Raichur- Sholapur line (Out of planned 18 elements)
18.4.1 Updated status of pending transmission elements in WR and SR for proper utilization of
765 kV Raichur - Sholapur lines (out of planned 18 elements) is furnished below please:
Sl.
No
Name of
Transmission
Element
Exe.
Agency
Sch. CoD Expected
date
Remarks
Pending transmission elements in WR and SR for proper utilization of 765 kV
Raichur- Sholapur line (Out of planned 18 elements)
1 400 kV Tumkur-
Yelahanka D/C
line
PGCIL
(132
Ckm)
June 2014 31st TCC/
PGCIL
(Dec 2017) :
Sep 2018
Severe RoW
problem. 400 kV
Yelahanka S/S is
ready.
2 400 kV
Nelamangala-
Hoody LILO at
kV Yelahanka
PGCIL
(20
Ckm)
32nd
TCC:
February
2018
PGCIL following up
State Administration
for removal of ROW
issues for LILO
Nelamangala-Hoody
3 220 kV Tumkur –
Antharasana Halli
D/C
KPTCL LOA placed
on 18.03.15
with 18
months
completion
schedule
32nd
TCC:
March
2018
4 220 kV Tumkur
(400 kV) S/S –
220 kV Tumkur
S/S D/C
KPTCL 32nd
TCC:
March
2018
31st TCC :
All towers completed
and stringing of 4
kms to be carried out.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 45
18.5 Status of important Transmission Systems
18.5.1 Updated status of associated links is furnished below please:
Transmission
Elements
Line
Length
(ckm)
Implem
enting
Agency
Sch
COD
Ant
COD/
Act
COD
Constraints/
Remarks
Common System Associated with NTPL / Costal Energen Private Ltd / Ind-Barath
Power Ltd, Tuticorin Area
765 kV S/C Salem PS
(Dharmapuri) -
Madhugiri P S line
(initially charged at
400 kV)
243.23 PGCIL Dec'14 32nd
TCC:
March
2018
Severe ROW
problems in
Karnataka. Critical.
Covered under
PRAGATI.
Transmission system associated with IPPs of Nagapattinam/Cuddalore Area–
Package A
Salem New –
Madhugiri 765 kV S/C
line.
219 (PNMT
CL) (A
subsidia
ry of
PGCIL)
Mar‟
15 32
nd
TCC:
June
2018
Severe RoW issues
being faced in
Karnataka.
PGCIL (Dec 2017):
Issue highlighted to
PMO level.
Transmission System Associated with Contingency plan for Evacuation of Power
from IL&FS ( 2 x 600 MW)
Stringing/ upgradation was pending within NLC Complex. PGCIL had planned it during
October 2017.
5 220 kV
Yelahanka
(400/220 kV)
S/S- 220 kV
Yelahanka S/S
D/C Cable
KPTCL (11.75 Ckm) 32nd
TCC:
April 2018
1.5 km/ 5.8
km
completed
31st TCC :
Cable had been
received, ROW issues
being resolved.
139th
OCC
(11.12.17):
Road Cutting
permission issued by
KRDCL vide letter
dated 29.11.2017.
Panchayat
permission yet to be
received. Works were
likely to be
completed by March
2018.
PGCIL letter dated 09.01.2018 (refer Annexure-XXXVII) had stated that for
utilization of 2 x 500 MVA Transformers at Madhugiri Substation, 220 kV
downstream lines i.e. Madhugiri-Anthranasahalli, Madhugiri-Nittur and Madhugiri-
Madhugiri-II needs to be commissioned for utilization of the system.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 46
Transmission evacuation system for HNPCL (1,040 MW) Power Plant
400 kV TM D/C
Kamavarapukota -
Vemagiri
185 APTRA
NSCO
31st TCC:
Alternate options being explored,
would be taken up with the
Standing Committee.
Suryapet Substation 2x315
TSTRA
NSCO
ICT-I
charged
on
31.3.16
ICT-2 charged on
17.03.2017
Transmission System required for evacuation of power from Kudgi TPS (3x800
MW in Phase-I) of NTPC Limited
220 kV D/C line to
Vajramatti
KPTCL Feb
2017
Awarde
d – 1
year
June
2018
220 kV D/C line to
Basavana Bagewadi
72.60
KPTCL Dec 2017
30th
TCC :
50% complete
220 kV D/C line to
Bijapur
KPTCL Dec 2017
30th
TCC :
50% complete
Transmission System for evacuation of power from Singareni Collieries
Generating Project (2 x 600 MW)
STPP, Jaipur –
Jagityal
139 TSTRA
NSCO
31st
TCC:
Nov 17
Works Awarded on
Nov‟15.
Jagityal - Nirmal 148 TSTRA
NSCO
Feb 17 Ready 31st TCC : Nirmal
SS by Nov 2017
Transmission system of KPTCL for evacuation of power from Yermarus TPS ( 2 x
800 MW)
Bellary 400 kV PS
near „BTPS‟
Compl
eted
32nd
TCC: March
2018. Land acquired
from KIADB and
some job assurance
issue was being
addressed.
Gulbarga 400/220 kV
substation
2 x 500
Land acquired.
Estimate to be
prepared.
Yermarus TPS -
Gulbarga 400 kV D/C
line (QM)
Detailed survey
completed. Estimate
is being prepared.
400 kV SS at
Chikkanayakanahalli
(C.N Halli) near LILO
point on the
Nelamangala –
Talaguppa 400 kV
lines to Hassan.
2 x 500
MVA
Step-
down SS
agreed in
39th
SCPSPS
30
th TCC:
Land yet to be
identified. Alternate
site at Bindikere is
under consideration.
Land acquisition is
under progress.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 47
R
LILO of Nelamangala
– Talaguppa 400 kV
D/C at CN Halli.
Linked with CN Halli
station
Land acquisition is
under progress
Termination of 400
kV D/C of Hassan
from Nelamangala –
Talaguppa at CN Halli
400
After CN Halli land
identification, survey
would be taken up.
Yermarus TPS -
Bellary PS 400 kV
D/C QM
(400 kV MC (5.138
Kms) and 400 kV D/C
line(137.355 Km) =
142.493 Kms)
285
Sept
2017
Dec
2017
213 ckm out of 285
completed
Bellary PS -
C.N.Hally 400 kV
D/C line QM
360
29
th TCC update:
Part of the work from
Rampura-Jagalur 65
kM had been
awarded.
Bellary PS to
Madhugiri (PGCIL)
a) Madhugiri to
Rampura limits):
400 kV D/C QM
Bellary PS to
Rampura limits
(KelaginaKanavi)
188.74
43.018
364
86
22-12-
16
24-04-
17
Comple
ted
Comple
ted
31st TCC :
Testing under
progress. Would be
commissioned
shortly.
De-link 400 kV S/C
RTPS-BTPS-JSW-
Guttur with JSW Bus
Nov‟16 Agreed in 39
th
SCPSPSR
Once 400 kV M/C
line from JSW to
BPS the link between
JSW & BPS will be
delinked.
JSW TPS – BPS
Station 400 kV D/C
line QM
Comple
ted
Additional JSW TPS –
BPS 400 kV D/C
(QM)
Agreed in 39
th
SCPSPSR
400 kV BTPS-Guttur
D/C (QM)
Agreed in 39th
SCPSPSR
Transmission System for Rayalaseema TPS (600 MW)
RTPP - Pedda
Jamgam Palli -
Chittoor
216+
212
APTRA
NSCO
Test
charge
on
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 48
22.05.2
017
400/220 kV, Kalikiri
S/S
2 x 315
MVA
APTRA
NSCO
Sep‟17 30th
TCC:
2018-
19
PO is placed in Nov-
15. Site handed over
on 23.06.2016
LILO of Rayalseema
IV-Chittoor 400 kV
D/C at Kalikiri
81
APTRA
NSCO
Status of upcoming links having impact on S1-S2
400 kV Somanahalli-
Dharmapuri PS
244 PGCIL Jun‟15 32nd
TCC:
June
2018
Severe RoW
problems being faced
in Karnataka.
Compensation issues
under progress.
PGCIL had informed that regarding 400 kV Dharmapuri - Somanahalli line, DC
(Urban) had ordered compensation of 100 % of fair value for tower footing and 55 %
for line corridor. With this, cost of 30 kM line was working out to as high as Rs 90
crore. It would take around two months to complete the work once ROW issues are
resolved.
400 kV Mangalore
(UPCL ) -Kasargode-
Kozhikode
TBCB
41st SCPSPSR: A meeting was held in CEA on 28.08.2017. In the joint meeting, system studies were carried out
by considering the KSEB‟s proposal as well as proposal of Udupi Power Corporation Limited (UPCL) for
evacuation of power from their proposed additional generating (2 x 800 MW) units and following was agreed:
(i) There is requirement of additional (i.e. 2nd) double circuit outlets from Udupi switchyard. Replacing existing
conductors of 400kV D/C Udupi-Hassan line by HTLS conductors proposed by KPTCL would not serve the
purpose of evacuation of total power generated at Udupi (2 x 600 MW + 2 x 800 MW) under N-1 Criteria.
(ii) A team comprising of officers from KPTCL, KSEBL and UPCL would visit UPCL generation switchyard to
assess the space availability to accommodate additional bays including Bus Reactor bays to establish 400 kV D/C
Link between Udupi & Kasargode.
29.7 Representative of KSEB stated that team comprising of officers from KPTCL, KSEBL and UPCL had visited
UPCL generation switchyard to explore feasibility of space for proposed extension. The team had observed the
following:
(i) Sufficient space is available for accommodating the two line bays for Udupi - Kasargode 400 kV D/C Line and
two bus reactor (2x125MVAr) bays at Udupi generation switchyard.
(ii) UPCL had agreed and proposed to extend the bus by providing bus sectionaliser for phase-2 expansion.
(iii) UPCL had also agreed to provide space for switchable line reactor if required.
……..
After deliberations, Members agreed for construction of already approved Udupi PCL (Mangalore) –
Kasargode 400 kV D/C Line (with Quad Moose ACSR conductor) along with Kasargode 400/220 Kv,
2 x 500MVA substation under ISTS and to drop Kasargode – Kozhikode (Areakode) 400 kV (Quad)
D/c line (with Quad Moose conductor) (Agreed in 35th
meeting of SCPSPSR)
Critical Intra-regional transmission elements
400 kV Edamon-
Kochi
286 PGCIL
32nd
TCC:
May
2018
Being monitored
under PRAGATI.
31st TCC: Line work
progressing
LILO of 230 kV
Neyveli- - Bahour at
Karaikal
32
nd TCC: April 2018
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 49
LILO of 400 kV
Bellary – Tumkur at
Pavagada
32
nd TCC: Feb 2018
400 kV Pavagada –
Hiriyur D/C line
32nd
TCC: March 2018
400 kV Hiriyur –
Mysore line
32nd
TCC: June 2018
400 kV Pavagada –
Devanahalli D/C line
32nd
TCC: December 2018
Tirunelveli (GIS) and
Tuticorin –Tirunelveli
line
32
nd TCC: March 2018
FSC at Pavagada 32nd
TCC: July 2019
18.6 Associated Transmission Evacuation Schemes in Tamil Nadu
Updated status of the following stations, evacuation schemes finalized in the 37th
SCPSPSR, which were modified in the following Standing Committee Meetings, is given
below:
Generating Station Likely COD Evacuation Status
Ennore TPS Expansion – 1 x
660 MW
2019-20
Ennore SEZ (NCTPS Stage-
IV) – 2 x 660 MW
2018-19
NCTPS Stage III – 1 x 800
MW
2019-20 41st SCPSPSR: 2019
Ennore TPS Replacement – 1
x 660 MW
2019-20 41st SCPSPSR: 2020
SEPC (1x525) October 2018 41st SCPSPSR: Require
start up power for its
Auxiliaries by April 2018.
SEPC-Thennampatty
400/230/110 kV 41
st SCPSPSR : April
2018
SEPC- Ottapidaram 400kV
(Regular evacuation)
765/400 kV, 2 x 1500 MVA
Ariyalur SS
31.3.2019 Work awarded to M/s BHEL
on 31.03.2017.
765/400 kV, 3 x 1500 MVA
North Chennai PS (GIS)
2019-20 Price bid opened on
02.06.2017 and under
evaluation.
765/400 kV, 2 x 1500 MVA
Coimbatore SS
2020-21 Administrative approval
accorded. Alternate land is
to be identified.
765 kV Ariyalur –
Thiruvalam (PG)
07.04.2018 Work awarded to M/s
Gammon India. Works
under progress.
765 kV North Chennai PS -
Ariyalur
2019-20 Tenders opened on
16.06.2017 and under
process.
400 kV Ennore SEZ-North
Chennai PS
Tender opened on
07.06.2017 and under
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 50
400 kV Ennore SEZ- Ennore
to ETPS Expn
evaluation. BLTC note for
price bid opening is sent to
Account for remarks. 400 kV ETPS Expn – North
Chennai PS
Interconnection from
common point of SEZ –
ETPS Expn to NCTPS Stage-
II and LILO of NCTPS-II –
SV Chatram 400 kV MC
between location No.21 & 22
18.7 Status of Various upcoming Lines
18.7.1 POWERGRID vide letter dated 4th
August 2017 had intimated status of commissioning
of various elements in the Southern Region. In the 32nd
Meeting of SRPC after
deliberations, it had been agreed that usefulness of early commissioning of the
transmission elements would be studied by the Study Group with participation from
constituent states, CTU, SRLDC & SRPC Secretariat. SRPC had agreed that this
Report could be approved by Chairperson, SRPC. Based in this, approval would be
communicated to CTU by SRPC Secretariat.
18.7.2 As agreed in the 32nd
Meeting of SRPC, a Special Meeting was conducted on 1st
September 2017 in SRPC, Bengaluru with participation of CTU, States, SRLDC and
SRPC. Report in this regard had been submitted to Chairperson SRPC vide SRPC letter
dated 04.09.2017. Chairperson, SRPC and CMD, TSTRANSCO had approved this
Report. Accordingly, vide letter dated 26.09.2017 (Annexure-XLV) SRPC Secretariat
had forwarded this Report to Powergrid/CTU/States.
18.8 Operational Feedback
18.8.1 NLDC vide letter dated 21st January 2018 (available in NLDC website) had highlighted
following transmission constraints as part of Operational Feedback for the quarter
October – December 2017, in respect of SR:
Transmission Line constraints:
400 kV Nellore Pooling Station -Nellore D/C line
400 kV Gooty-Nelamangala line & 400 kV Gooty- Somanahalli line.
400 kV Udumalpet- Palakkad D/C line
31st TCC: KSEBL had stated that there was no constraint on this line. SRLDC
stated that they would examine the matter.
400 kV Hiriyur-Nelamangala D/C line
220 kV Bangalore Metro Network
Overloading of 230 kV Shoolagiri-Hosur (TN)-Yerrandahalli-Somanahalli S/C line Constraints in Nagjheri PH evacuation Constraints in Chennai 230 kV System
Overloaded 230 kV Lines in Tamil Nadu
Constraints in wind evacuation
220 kV Hyderabad Metro Network
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 51
ICT Constraints
400/220 kV 2 x 315 MVA ICTs at Gazuwaka
32nd
SRPC: SRPC had agreed in Principle for additional 500 MVA ICT and the
matter would be referred to Standing Committee by CTU for vetting.
41st SCPSPSR: After deliberations members agreed for an additional
400/220kV, 1x500 MVA ICT at Gazuwaka substation as ISTS.
400/220 kV 3 x 315 MVA ICTs at Vemagiri
31st TCC: SRLDC had informed that even after commissioning of new ICT, the
constraints persisted.
32nd
SRPC: CMD, APTRANSCO had informed that problem had reduced but
once the Mardam (Vijianagram) lines come up within two months, the issue
would get addressed.
41st SCPSPSR: APTRANSCO has to look into the issue and may plan
additional ICTs/ replacement of ICT by higher capacity.
400/220 kV 3 x 500 MVA ICTs at Nelamangala
400/220 kV 3 x 500 MVA ICTs at Somanahalli
400/220 kV 3 x 500 MVA ICTs at Hoody
400/220 kV 2 x 315 MVA ICTs at Guttur
400/220 kV 2 x 315 MVA ICTs at Hiriyur
400/220 kV 1 x 500 MVA + 1x315 MVA ICTs at Narendra
400/230 kV 2 x 315MVA ICTs at Madurai
400/230 kV 2 x 315MVA ICTs at Thiruvalam
400/220 kV 3 x 315MVA ICTs at Kalpakka
400/220 kV 2 x 315MVA ICTs at UPCL
400/220 kV 3 x 315MVA ICTs at Shankarapally
41st SCPSPSR: 1x 500MVA 400/220kV transformer (4
th one) at Malkaram S/S
& Shankarpalli S/S approved
SRPC requested the respective entities to kindly identify and implement suitable short
term and long term measures to overcome these constraints in a time bound manner.
18.8.2 The following issues had been raised in OCC Meetings:
500 MVA additional ICT at Checkanoorani (Madurai) 400/230 kV S/s in PGCIL end
was commissioned on 29.12.2017. LV side 230 kV Bay work under scope of
TANTRANSCO was under progress and would be completed on 30.09.2017.
TANTRANSCO had informed that tender was opened on 16.05.2017 and would be
completed by 30.11.2017.
Completion of Kamuthi bays (2 nos) at Karaikudi
OCCM: SR-II had informed that Circuit-II was to be completed by 15.12.2017
(delay due to mis-match in the terminal equipment). Circuit-1 was expected by
January 2018 (delay was due to construction of Secured Panel Room which was
covered in ICT-III contract).
NLC ICTs
31st TCC: NLC/TANTRANSCO had been suggested to take up the upgradation
issue in the ensuing Meeting of Standing Committee on Power System Planning.
41st
SCPSPSR: TANTRANSCO had proposed a new substation at Neyveli and
with this substation the overloading issue might get resolved.
A. ICT and Bus reactors:
i) 2 x 500 MVA, 400/230 kV ICTs
ii) 2 x 125 MVAR bus Reactor
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 52
B. 400 KV Connectivity:
i) New Neyveli Thermal power station- Neyveli (TNEB) 400 kV D/C Link.
ii) Manalmedu- Neyveli (TNEB) 400 kV D/C Link.
18.8.3 PGCIL vide letter dated 09.01.2108 (refer Annexure-XXXVII) had stated that for
utilization of 1 x 500MVA, 400/220kV ICT at Trichy: Extensions of 230 kV Main and
Transfer Buses in TANTRANSCO Switchyard at Alunder 230 kV Station (Trichy SS)
under SRSS-XX are yet to be taken up by TANTRANSCO.
TCC deliberations
PGCIL (SR-II) had informed that Trichy 1 x 500 MVA ICT had been
commissioned.
18.9 STATCOM at NP Kunta
Powergrid vide E-mail dated 02.02.2018 (Annexure-XLVI) had stated that STATCOM
at 400 kV NP Kunta PS was commissioned on 04.06.2017. STATCOM being state of
the art technology product and with tight commissioning schedule of NP Kunta Phase I
generation, it had been proposed that the delivery of STATCOM be postponed
corresponding to Phase II, for which the schedule was September 2016.
TCC deliberations
TCC had agreed for commissioning of STATCOM on 04.06.2017 under Phase I. It
was also noted that this STATCOM was being utilized with Phase I generation.
It was also noted that STATCOM set points had been revised and was being
utilized for voltage regulation.
SRPC approved commissioning of STATCOM on 04.06.2017 under Phase I.
18.10 Status of transmission system for IPPs
TANTRANSCO vide letter dated 07.02.2018 (Annexure-XLVII) had intimated that
many transmission systems are evolved based on the LTOA requirements of IPPs.
Some of the IPPs entered into BPTA with CTU / TSPs had not firmed up their
generation / target beneficiaries. On account of lack of coordination among IPPs and
CTU, many of the transmission systems planned and executed had become redundant
resulting in huge impact on the financial condition of the existing DICs. Tariff
determination process had become a legal battle between the TSPs and the
beneficiaries. Further, some of the generators were approaching Hon‟ble Commission
for relinquishment of full / part LTA. This would further destabilise the planning
process and finances of the beneficiaries. Under these circumstances, it was essential
to deliberate the issues associated with implementation of transmission system
designed for IPPs. Following points needed to be brought on record and the
Committee may take a decision:
a. Status of IPPs entered into LTOA with CTU.
b. Identification and firming up of beneficiaries.
c. Operationalization of LTA quantum and sharing of transmission charges by the
defaulting IPPs
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 53
d. Progress of transmission schemes due to non firming up generation project and
non identification of beneficiaries
e. Relinquishment of LTA sought by IPPs after implementation of transmission
systems and its impact on PoC charges shared by the existing DICs.
TCC deliberations
CTU had informed that most of the information sought was available on the PGCIL
website. Some of the issues were being dealt by the Hon‟ble Commission/APTEL
etc under various petitions.
Relinquishment of LTA was being taken up as per provisions of CERC Regulations
/ CERC Orders / Approved procedure. It is well within the right of LTA holder to
relinquish LTA, while compensation/relinquishment charges would be as decided
by the Hon‟ble Commission. At times, LTA holders are relinquishing LTA at the
last moment and even some of the states are availing power from such generators.
PGCIL had been supporting the cause of beneficiaries in the relinquishment related
issues.
Many of the SR states were able to avail power from other regions at competitive
rates since the IR corridor TTC had been enhanced / released.
Most of these issues may get addressed in the proposed GNA regime. It may be
prudent to await the implementation of GNA.
SRPC noted the above.
18.11 Issues relating to implementation of generation projects of IPPs and associated
transmission scheme and regulatory process
TANTRANSCO vide letter dated 07.02.2018 (refer Annexure-XLVII) had intimated
that generation and transmission projects are implemented based on the approval of
Regional Power Committees. During implementation phase, some of these generation
projects and associated transmission schemes are abandoned / modified without
deliberation in the Regional Power Committees. Some of the project developers were
taking secluded action to exit from the planned schemes without knowledge of
Distribution companies who are forced to pay the transmission charges due to the
default of the promoters. Recently, the following petitions were filed by the IPPs /
TPPs/CGS without including the beneficiaries as Respondents, which would have
huge impact on the finances of the Discoms:
a. Petition No.62/MP/2017 – filed by Powergrid NM Transmission Limited for
apportionment of transmission charges among the two elements of the
transmission project viz. Nagapattinam Pooling station – Salem Pooling Station
765 kV D/c line and 765 kV Salem – Madhugiri 765 kV S/c line.
b. Petition No.164/MP/2017 – filed by IL&FS for surrender of 610 MW of LTA
c. Petition No.261/MP/2017 – filed by M/s NTPC for revision of PoC charges for
the full quantum of LTA
d. Petition No.246/MP/2016 – filed by Coastal Energen Private Limited for
relinquishment of 542 MW LTOA.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 54
TCC deliberations
CTU had informed that due process as outlined in various Regulations/Orders was
being followed.
Most of the issues could be addressed in the GNA regime. It may be prudent to
await the implementation of GNA.
These petitions had been filed by generators against PGCIL and it was for them to
identify the Respondents. TANGEDCO was suggested to kindly file petition/IA to
implead itself in the various petitions, if so desired.
Many of these issues were already under the consideration of Hon‟ble Commission.
SRPC noted the above.
19 UPCOMING RENEWABLE PROJECTS AND THEIR INTEGRATION WITH
TRANSMISSION NETWORK
19.1 Status update of upcoming evacuation schemes in Southern Region for renewable as given
below is furnished at Annexure-XLVIII.
S.No. State Project Type of Renewable
Project
Capacity in MW
1 TS Gattu Solar Park Solar 500
2 AP N.P. Kunta Solar Park Project Solar 1500 3 AP Ghani/ Panyam Solar Project Solar 1000
4 AP Aspiri Wind Project Wind 1000
5 AP Suzlon Power Project Wind 300 6 AP Various, at Uravakonda area Wind 1361
7 AP Various, at Kondapuram area Wind 1109 8 AP Various, at Hindupur area Wind 680
9 AP Mailavaram dist., Kadapa Solar 1000 10 AP Talaricheruvu dist., Ananthpur Solar 500 11 KA Tumkur(Pavagada) Ultra Mega Solar
Park Solar 2000
12 KA Gadag Wind Project Wind 80 13 KA Dhoni Wind Project Wind 587 14 KA Harti Wind Project Wind 244 15 KA Gadag Wind Project Wind 90 16 KA Gadag Wind Project Wind 197 17 KA Jagalur Wind Project Wind 177 18 KA Thalak Wind Project Wind 250 19 KA Thalak Solar Project Solar 200 20 KA Guttur Wind Project Wind 518 21 KA Davanagere and Chitradurga Wind 60 22 KA Davanagere and Chitradurga connected Wind
(proposed) 406
23 KA Athani Wind Wind 240 24 KA Chikkodi Wind 92 25 KA Chikkodi, Ghatprabha, Belgaum Wind 110
26 KA Chikkodi, Ghatprabha, Belgaum Wind 418 27 KA Atria Hydel Hydel 12 28 KA Cauvery Hydro Hydro 3
29 KA Pioneer Power Hydro 24.75 30 KA Pioneer Power Hydro 24.75
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 55
31 TN Mytrah Energy (India) Wind 300
32 TN Samimeru Wind farms Wind 48.5
33 TN SISL Green Infra Wind 48.5
34 TN Samiran Udaipur Wind farms Wind 48.5 35 TN Shivam Filaments Wind 48.5 36 TN R.S. India Global Energy Wind 480 37 TN Suzlon Power Infrastructure Wind 1000 38 TN Suzlon Power Infrastructure Wind 350 39 TN Vestas Wind Technology India Wind 150 40 TN Wind Projects at Samugarengapuram Wind 600 41 TN Kamuthi Solar Park Solar 1000 42 KER Kottathara Project Wind 80 43 KER Vettathur Project Wind 80
44 KER Kuyilimala Wind Project Wind 14.25 45 KER Kasargode Solar Project Solar 200
Data not present in draft NEP Vol.2(Trans.)
46 AP Gamesa Renewable Pvt. Ltd.(Kurnool) Wind 350 47 AP Gamesa Renewable Pvt. Ltd.(Dhone) Wind 300 48 KA Ostro Dakshin Power Pvt. Ltd. Wind 300 49 KA Orange Ashok Wind Power Wind 250 50 KA Renew Wind Energy (TN) Pvt. Ltd.
(Koppal) Wind 400
51 TN Inox Wind Infrastructure Services Ltd Wind 500 52 TN Vagarai Suzlon wind farms Wind 200 53 TN Regen Wind Farm (Vagarai) Wind 600 or 384 54 TN Renew Power Ventures Pvt. Ltd.(Karur) Wind 400 56 TN Orange Sironj Wind Power Pvt. Ltd. Wind 200 57 TN Ostro Alpha Wind Pvt. Ltd. Wind 400 58 TN BLP Energy Pvt. Ltd. Wind 250 59 TN Greenmint Power Pvt. Ltd. Wind 200 60 TN Gamesa Renewable Pvt. Ltd.
(Thoothukudi) Wind 400
61 TN Sitac Kabini Renewables Pvt. Ltd. Wind 250 62 TN Gamesa Renewable Pvt. Ltd. (Karur) Wind 200 63 TN Green Infra Wind Energy Ltd. (Tirpur) Wind 250
19.2 The following had been noted in earlier SRPC/TCC Meeting:
It was noted that RE schemes are getting modified at times while some are getting
dropped also. TCC had suggested that the RE Projects/evacuation schemes may kindly
be reviewed and updated status communicated. It was observed that timely progress
on these schemes needs to be communicated to SRPC Secretariat, being a critical
issue monitored by various bodies.
It was noted that Procedure for RE Framework had already been notified and was
available at NLDC website. States/RE Developers had been kindly requested to ensure
that infrastructure to implement RE Framework either at ISTS/in STS level was in
place from the inception stage itself.
19.3 Inclusion of the transmission system for Solar Power evacuation under PoC and its
implication on CERC (Sharing of Inter State Transmission Charges and Losses)
Regulations, 2010
19.3.1 TANGEDCO vide letter dated 16.08.2017 had raised concern on huge error in
allocating transmission charges due to solar evacuation/connectivity and on the LTA
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 56
quantum of solar power parks is not being included in computation of POC charges
which leads to exemption of host state from the burden and thus, the burden is passed
on to other DICs.
19.3.2 The following had been noted in earlier Meetings:
It was noted that Hon‟ble CERC had constituted a Task Force to review,
„Framework of Point of Connection (PoC) charges‟. Terms of Reference of the
Committee covered, „Deficiency in the existing mechanism if any, and in the light
of issues and concerns of various stakeholders‟.
It had been agreed that Chairperson, SRPC would be kindly requested to take up
common issues in this regard with Hon‟ble CERC.
All DICs had been suggested to take specific issues / suggestions with the Task
Force.
19.3.3 Chairperson, SRPC vide letter dated 23.08.2017 (Annexure-XLIX) had brought out
certain issues to the notice of Hon‟ble CERC. It had been requested that Hon‟ble
Commission may kindly bestow its attention on the following issues :
Non consideration of solar LTA in arriving at the POC slab rate does not alter the
transmission charges payable by that state.
It is thus not clear in what manner or how the transmission charges waiver for solar
and wind power is to be actually implemented in the POC mechanism. This matter
merits kind attention of Hon‟ble Commission since this has implications not only
on the host state but also on the neighboring states.
Implementation of the policy regarding waiver of transmission charges merits kind
attention in view of the existing methodology of sharing of transmission charges.
19.3.4 CERC vide letter dated 06.09.2017 (Annexure-L) had informed that a Task Force had
been constituted under Chairmanship of Hon‟ble Member CERC which is already
looking in to the review of existing Framework of Transmission Charges and Losses.
SRPC letter was being referred to the Task Force for suitable consideration.
19.4 RE generator support for reactive compensation
19.4.1 In the OCC Meetings, it had been noted that even though Solar / Wind generators had
very controllable reactive injection / absorption capability, they were not being utilized
on account of PPA commitment / penalties. It had been suggested that SLDCs / STUs
may approach their Regulator for flexible set points as per direction of SLDCs. The
direction of SLDCs could be based on voltage level on season basis or on solar / non-
solar hours on daily basis. SRLDC had agreed to take up the issue in the FOR forum.
TCC deliberations
MS, SRPC had pointed out that certain provisions of PPA of solar generators may
not be as per the grid operational requirements and therefore this aspect needs to be
looked into. Hence, Reactive support/management of RE generators needs to be
examined and revisited keeping in view higher RE penetration. The
recommendation in this regard could be referred to FOR.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 57
Director (GM), CEA had stated that in draft Amendment of CEA Connectivity
Regulations, provision of voltage set point and control of VAR interchange had
also been proposed.
TCC had opined that details could be shared by the states and the matter could be
examined to arrive at commonality in SR.
SRPC noted the above.
20 NEW PROJECTS OF NTPC, NLC, NPCIL, JOINT VENTURE & UMPP
20.1 Schedule of synchronizing/commissioning of the new projects of NTPC, NLC,
NPCIL, and BHAVINI & UMPP is furnished below:
Station Unit
Installed
Capacity
MW
Scheduled date of
synchronizing /
commissioning Remarks
NTPC
Kudgi TPS
Stage-I
I,II,
III
3 x 800=
2400 Unit-I CoD from
31.07.2017
Unit-II
CoD on 31.12.2017
Unit–III
Synchronization by
Feb 2018 end and
trying to pre-pone
CoD to April 2018)
Telangana STPP
Phase I
2 x 800 32nd
TCC:
U-I CoD May2020
(Synchronization by
Mar 2020)
U-2 CoD Dec 2020
(Synchronization by
Sep 2020)
Boiler : BHEL
Turbine: Alstom
BOP: Tata Projects
Boiler columns have been
erected. Action of shifting
of the towers has been
initiated.
It was a prestigious and fast
track project.
Pudimadaka AP 4 x 1000 52 Months from Zero
Date
85% share to AP.
Zero date yet to be finalized.
AP had requested NTPC to
firm up the zero date at the
earliest.
31st TCC:
NTPC had informed that the domestic coal was yet to be tied up. Within
two months, the status would be communicated.
CTU informed that there was no connectivity / LTA application pending
with them.
NLC
New Thermal
Power Project
I 500 32nd
TCC:
April 2018
II 500 32nd
TCC:
April 2018
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 58
CTU had informed that for evacuation LILO of Neyveli - Puducherry
and 400 kV D/C to Araliyur lines are planned. NLC had applied for
LTA of 340 MW which could be managed with the LILO of Neyveli –
Puducherry. Balance 600 MW would be catered by 230 kV system of
TANTRANSCO.
31st TCC:
Araliyur S/S being developed by TANTRANSCO was awarded to
BHEL, works were under progress and expected by March 2019.
TANTRANSCO had assured that the 230 kV system would be ready by
March 2018.
NPCIL
KKNPP 3 &
4
2 x 1000 32nd
TCC
U3: 2023
U4: 2024
41st SCPSPSR:
CTU informed that they had
not received any LTA
application from NPCIL for
Kudankulam - 3 & 4 units.
Any system strengthening
would be planned on receipt
of the LTA application based
on proper studies.
BHAVINI
Kalpakkam
(PFBR)
I 500 Synchronization by
2017-18
COD by 2017-18
31st TCC:
CTU had informed that the evacuation system was completed in 2012
and as per the CERC Order, transmission charges are to be paid by
BHAVINI. The charges were not being paid by BHAVINI and the dues
had accumulated to Rs 88 crores.
NPCIL informed that BHAVINI was a separate Corporation under DAE.
NPCIL was however kindly requested to convey the concern of CTU to
BHAVINI.
PGCIL vide letter dated 09.01.2018 (refer Annexure-XXXVII) had
stated that Kanchipuram SS of TNEB for termination of Kalpakkam
PFBR-Kanchipuram 230 kV D/C Line. TANTRANSCO had informed
that the Kanchipuram S/S would come up by December 2017 –
TANTRANSCO may confirm.
32nd
TCC:
Kancheepuram SS – TANTRANSCO informed that the S/S would
come up by March2018
UMPP
Krishnapatnam 3960
(6 x 660)
32nd
SRPC: CMD, APTRANSCO had informed that
several Meetings had been held with beneficiaries
and coastal UMPP. In the present scenario, the
usefulness of this project for beneficiaries was
limited. In the meeting it had been decided that since
the matter was pending before Delhi High Court, it
was appropriate to file a Petition for Expeditious
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 59
Hearing. However after seeking legal opinion, a
SLP before Hon‟ble Supreme Court was
contemplated seeking directions to Delhi High Court
to kindly expedite and pass Orders at the earliest.
32nd
TCC: AP informed that after discussing with the beneficiaries, an
Expeditious Petition was contemplated before Hon‟ble Delhi High Court
(before approaching Hon‟ble Supreme Court). The petition was likely to
be heard in the month of March 2018.
Cheyyur 4000 New bids would be called
21 NEW PROJECTS OF STATE SECTOR & IPP
21.1 Updated status of new projects of State sector is furnished below:
Sl
No
Name of project Located
in
Capacity
in MW
Commissioning Schedule
/Remarks
1 Rayalaseema TPS ST-IV AP 1 x 600 2017-18
2 Dr. NTTPS, Vijayawada AP 1 x 800 June 2019
3 Krishnapatnam Stage II
(U3)
AP 1 x 800
4 Polaki AP 4000 (5 x
800 MW)
5 Edlapur KAR 1 x 800
6 North Chennai Stage III TN 1 x 800 2019-20
41st SCPSPSR: 2019
7 North Chennai Stage IV TN 2 x 800 Beyond 2019-20
8 Ennore TPS Exp TN 1 x 660 2018
9 Ennore replacement TN 1 x 660 41st SCPSPSR: 2020
10 Udangudi Stage I TN 2 x 660 2020-21
11 Uppur TPP (TBCB) TN 2 x 800 2019-20
12 Manuguru PPP Telangana 4 x 270 U1: March18
U2: June18
U3: Sep 18
U4: Dec 18
13 Kakatiya TPP Stage III Telangana 1 x 800 Not decided
14 Kothagudem TPS Phase
VII
Telangana 1 x 800 2018-19 (June-18)
15 Damaracherla (Yadadri) Telangana 5x800 U1 & 2 Nov 2020
U3 – 5 2021
21.2 Updated status of new projects of IPPs is furnished below:
Sl
No.
Name of project Located
in
Capacity
in MW
Commissioning Schedule
/Remarks
1 Meenakshi PH-II AP 2 x 350 2018-19
Untied: 640 MW
2 East Coast Energy
Thermal
AP 2 x 660
2018-19
AP : 300 MW
3 Thermal Powertech
(TPCIL) Unit-III
AP 1 x 660
2017-18
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 60
5 Godhna TPP, Janjir –
Champa Dist,
Chhattisgarh
For
KAR
2 x 800 2017-18
22 REVIEW OF ULDC / SCADA/COMMUNICATION
22.1 Status of pending items is as follows:
Issue Action plan
Frequent data outage (Central Sector)
Warangal Multiplexer problem, Spare was not available
LANCO LANCO to assure
NTPL NTPL assured that both the channels (BSNL &
PLCC) would be made healthy.
Provision of data through fiber channel: PGCIL
confirmed that the same would be made available in
the upcoming projects.
Frequent data outage (State Sector)
AP Non-availability of SAS vendor to attend / rectify the
gateway issues: an expert group for RTU/SAS issues is
under formation.
Manali
SS(TANTRANSCO)
Due to conversion of 230 kV switchyard to 400 kV level
and associated works in progress.
NCTPS Stage-2 &
Sriperumbdur SS
(TANTRANSCO)
Alternate data link from POWERTEL is under
procurement
AMC provision for SAS
gateways
Needs to be incorporated and the same needs to be
taken up by PGCIL, SLDCs and generating stations.
Data Discrepancy Constituents and Powergrid agreed to resolve by
31.10.2017.
Backup SCADA & System testing
AP Backup SLDC is planned to be established at Tirupati and
they have received an estimate of Rs. 9.90 Crores.
APTRANSCO informed that Powergrid is the consultant
for the works and have given permission to Powergrid to
give the procurement works to ALSTOM. Since the
estimate was observed to be on higher side, Powergrid
comments on the same is awaited by APTRANSCO to
move ahead.
TS Received the estimate Rs. 15.7 Crores for setting of
Backup Control Centre at Warangal of and the same is
under process. A team would be visiting LD&C, PGCIL,
Gurgaon for further deliberations.
Kerala, Tamil Nadu &
Karnataka
May be completed by Dec 2017.
KSEBL: will be carried out in first week of January 2019.
Status of mapping of
ADMS in SLDCs
ICCP between NTAMC &
RLDC
Proposal for finalizing ICCP between NTAMC & RLDC
is under review by PGCIL Management and will revert
back.
32nd
TCC:
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 61
CTU stated that they would not be interchanging data
from NTAMC through ICCP on account of cyber
security apprehensions.
It was noted that functional requirements of SRLDC
would remain and the same would be addressed by
PGCIL.
OPGW stringing on
balance portion of KPTCL
line
Except Hassan-Santhigrama (7.4 kM) OPGW stringing
completed.
Alternate connectivity to SRLDC from Somanahalli had
been made through. SRLDC had stated that they would
test the alternate connectivity.
Protection coupler
replacement for
Kayamkulam
Transmission system
SR-II: Approval for the depository amount to be paid to
KSEBL was under process.
KSEBL: Pre qualification bid opened.
Modification in EMS
package – TSTRANSCO
Had received estimate of Rs 47 lakhs and the contract
was being firmed up.
Shifting the SCADA
servers from old APSLDC
at Kavadiguda
(Secunderabad) to new
SLDC at Gunadala,
Vijayawada
APTRANSCO: Shifting completed. Operation started
from 25.12.02017
AMC for VC / UPS
SRLDC stated that they would ascertain from OEM (M/s
GE) in coordination with LD&C.
Hotline communication
for Grid operation
Equipment availability at alternate manned locations
would be made progressively and details would be
communicated by 15.11.2017(SR II).
Simplification of the
complaint management
procedure for timely
rectification of the faults
PGCIL was requested to take up the issue with M/s
Orange.
A procedure may be formulated to maintain the
monthly/weekly availability status for certification of
communication availability.
Permission for preventive
maintenance
PGCIL requested all constituents to grant the timely
permission
BOQ of SRLDC and
actual supply
To be furnished by SR-II.
Orange Exchange
integration with other
Exchange available with
TN.
SR-II stated that the details could be communicated and
wherever technically feasible, the same would be
integrated in coordination with the utility and M/s
Orange.
Problems with speech
circuits at SRLDC end
for NTPC Ramagundam,
NTPL, Vallur, NLC TS
II, NLC TS II Expansion,
LANCO Stage II, IL &
FS etc.
Whenever payments are made to BSNL at respective
ends, BSNL at other end had to inform BSNL, Bengaluru
TD for necessary updation. Copy of the bill paid could be
communicated to SRLDC.
KSEBL issues
Alternate links, SNCP
protection scheme for
KSEBL‟s network.
PGCIL to attend the issues
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 62
Issues and pending points
of Orange Exchange,
SMS Exchange & Voice
Logger.
PGCIL to attend the issues
NMS desktop operating
system – to be replaced
by Tejas.
Action from M/s BGR was required.
Remote alarm at SPS
Protection Coupler at
Madakathara
PGCIL to attend the issues
Handing over letter for
earlier ULDC
To be received from PGCIL as the final payment has been
made in June 2017.
Puducherry issues
IP phones connected with
the Hot line EPAX are
experiencing frequent
faults
POWERGRID informed that they would take up with
M/s. Orange.
Normalization of the
voice communication by
shifting the existing voice
traffic from the removed
Alcatel MUX to the
newly erected Valliant
Mux
Necessary E&M and FXO cards to be supplied for
Villianur and Bahour Auto substations; PGCIL to attend
the issue
Non-availability of
Yanam data
AP informed that the Yanam data was made through.
SRLDC stated that Puducherry could consider providing
Yanam data through a service provider (alternate route).
Talcher data 32nd
TCC: NTPC informed that there were some issues in the
communication link between NTPC to HVDC. The new
RTU was reporting to ERLDC.
SRLDC expressed concern over this long pending issue.
NTPC assured of necessary co-ordination in ensuring
SCADA data to SRLDC.
22.2 Damage of OPGW links during modification works by KPTCL.
PGCIL vide letter dated 09.01.2018 (refer Annexure-XXXVII) had stated that they had
installed OPGW on some of the KPTCL transmission lines like 220kV Bastipur-
Hootagalli, 220kV Hoody –HSR line etc (details enclosed). It had been observed that
during re-routing of 220kV Hoody –HSR line, M/s KPTCL had damaged OPGW link
resulting into loss of reliable communication for power system operation. Similar type of
incident had earlier occurred two- three times and necessary communication to M/s
KPTCL had been made requesting prior intimation to POWERGRID before
commencement of such works, so that this type of unwanted incident can be avoided.
In this regard copy of letters from SR-2 to CE (SLDC)/KPTCL, Bangalore were also
attached.
TCC deliberations
KPTCL had assured of necessary coordination to avoid such incidents in future.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 63
SR-II had reiterated that in future whenever KPTCL takes up work it could be
informed in advance so that communication could be appropriately diverted.
SRPC noted the above.
22.3 Video Conferencing facility at SLDCs
Status update is as follows:
AP PUDU
Commissioned on 07.10.2017 Puducherry would take up VC
requirement in the financial year 2017-18.
23 URTDSM (PMU) PROJECT IN SOUTHERN REGION
23.1 The URTDSM Phase-I project is nearing completion. The progress is being reviewed in
the Special Meeting/OCCM. A Special Meeting was conducted on 25.10.2017 to review
the progress. The updated status is given at Annexure-LI.
23.2 PGCIL had requested all constituents to submit revised PMU requirement, if any, for
Phase-II considering availability of Wide Band nodes. KSEBL vide letter dated
28.11.2017 had submitted PMU requirement for Phase-II.
TCC deliberations
KSEBL & APTRANSCO vide letter dated 28.11.2017 & 07.02.2018 had submitted
PMU requirement for Phase-II.
NPC vide letter dated 12.02.2018 (Annexure-LII) had sought certain
information/update on implementation of PMUs and their analytics.
SRPC noted the above
24 EMERGENCY RESTORATION SYSTEM (ERS)
24.1 Requirement of ERS had been outlined in MoP letter dated 05.12.2014. CEA vide letter
dated 21.07.2017 had stated that in the Meeting held on 28.06.2017 it had been noted
that ERS were in procurement stage in most of the States and the response from the
States was not very encouraging. Secretary (Security) had earlier sought a note from
CEA to take up matter with the concerned States at the highest level. Status update as
noted in TCC is given below:
Transmission
Utility
Requirement as
per MoP
Existing Status/Remarks
APTRANSCO 3 2 ERS III would be taken up
through own funding
TSTRANSCO 1 Tender floated; would be
taken up for PSDF
funding.
KPTCL 2 2
KSEBL 1 Tenders to be floated.
Would be taken up for
PSDF funding.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 64
TANTRANSCO 2 As per Minutes of BLTC
held on 03.01.2017,
procurement is put on hold.
Would require PSDF
funding.
PED Nil Nil
PGCIL 4 (2 Nos.
Additional)
4 (SR I &
SR II is
having 2
no. Each)
765 kV ERS (one each for
SR-I and SR-II) Order
placed. Expected by January,
2019.
SRPC noted the above.
25 PROGRESS OF BUS/LINE REACTORS TO BE COMMISSIONED IN SR
25.1 Status of implementation of Bus / Line Reactors / Dynamic Compensation approved in
the Standing Committee / SRPC pending for commissioning by the SR constituents is
furnished below:
Entity Bus Name Status REMARKS
KPTCL
Hoody Reactor erected on
platform.
March 2018
Nelamangala Reactor erected on
platform
March 2018
Entity Bus Name
Capacit
y in
MVAR
Approved
in Type Remarks
PGCIL Yelahanka 2x63 Bus
Deferred as per 40th
SCPSPSR. When
Madhugiri line will come
it will be expedited.
Cuddapah 50 to 125 39th
SC Yet to be awarded
APTRANSCO
Vemagiri 125
36th
SC
Bus December 2017 – LOA
issued on 18.06.2017
Kurnool 125 Bus December 2017 – LOA
issued on 18.06.2017
Kalpaka 125 Bus March 2018
Chittoor 125 39th
SC APERC approval awaited
Vijayawada 125 39th
SC
It was noted that a
separate reactor at
Vijayawada in scope of
AP had been identified.
The exact location could
be firmed up by
APTRANSCO.
APTRANSCO/
APGENCO
VTPS Stage
IV 125 39
th SC
APGENCO informed that
reactor enquiry was being
taken up.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 65
It was noted that this
reactor was different from
the APTRANSCO reactor.
KPTCL
Davangere 125 39th
SC 41
st SCPSPSR: Members
agreed with already
approved additional
reactors of 1x125 MVAR
(400kV) each at
Talaguppa and Davangere
400/220kV Substations.
Talguppa 125 39th
SC
TANTRANSC
O
Almathy 125 39th
SC Specification under
process Manali 125 39
th SC
Kayathar 125 39th
SC
TANTRANSC
O/
TANGEDCO
Mettur 125 39th
SC
To be diverted from
Palavadi and works to be
taken up.
TSTRANSCO Mamidipally 125 36
th SC
Bus
Testing and
commissioning under
progress.
TSTRANSCO/
TSGENCO Srisailam LB 125
39th
SC
41st SCPSPSR: After
deliberations, it was
agreed that TSTRANSCO
will submit the requisite
data for system study to
CTU. The CTU, after
carrying out studies will
forward the results to
CEA and TSTRANSCO.
The requirement will be
further discussed and
finalized in a Joint
Meeting.
NPCIL Kaiga 2 x 125
Bus
One reactor by December
2019.
For 2nd
reactor, NPCIL
will get in touch with
PGCIL.
UPCL Udupi 2 x 125
39th
SC
41st SCPSPSR: It was
informed that the
requirement was assessed
based on system studies,
therefore, it was decided
that the decision taken in
39th
SC Meeting may be
implemented.
SRPC requested all entities to expedite the reactor commissioning since high voltage was
being observed on sustained basis.
25.2 Commissioning of NGR bypass breaker/isolator was to be completed for the following:
400 kV Nellore-Thiruvalam line I & II, Thiruvalam-Kurnool I & II, Kozhikode-
Mysore I & II line reactors
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 66
25.3 Dynamic Compensation (Approved in 36th
SC)
Entity Bus Name
SC
MVA
GVA /
KA
Dynamic
Compensation
(STATCOM)
Mechanically
Switched
Compensation
(MVAR) Remarks
Reactor Capacitor
PGCIL
Hyderabad 18.4/
26.5
+ 200 MVAR 2x125 1x125 June 2019
Udumalpet 19.4/
28.0
+ 200 MVAR 2x125 1x125 32nd
TCC:
March
2019
Trichy 12.5/
18.0
+ 200 MVAR 2x125 1x125
25.4 Reactive Power Planning
25.4.1 Status of Capacitor installation in Transco/Discoms is given below:
Utility Reactive Power Planning Voltage
level
Remarks
APTRANS
CO
Kadapa: 273.6 MVAR
Vijayawada: 144 MVAR
Visakhapatanam:175 MVAR
On 33
kV side
28.8 MVAR commissioned
0 MVAR commissioned
16.6 MVAR commissioned
APSPDCL 802 MVAR 150 MVAR commissioned
APEPDCL 276 MVAR 82 MVAR commissioned.
KPTCL Bengaluru Tr. Zone:784
MVAR
12.1 kV 30 MVAR commissioned
Bagalkot Tr. Zone: 258.1
MVAR
12.1 kV 78.3 MVAR commissioned
Hassan Tr. Zone: 150.8
MVAR
43.5 MVAR commissioned
Mysore Tr. Zone: 60.9
MVAR
60.9 MVAR commissioned
Gulbarga Tr. Zone: 98.60
MVAR
Nil
Tumkur Tr. Zone: 281.3
MVAR
12.1 kV 46.4 MVAR commissioned.
34.8 MVAR EI approval
awaited.
TSNPDCL 288 x 2 MVAR
110 x 1 MVAR
140 x 2 MVAR commissioned
45 x 1 MVAR commissioned
KSEBL 360 MVAR 66 kV Works will be taken up after
approval. 11kV TANGEDCO 34 x 2.4 MVAR 11 kV
16 x 2.4 MVAR 22 kV 16 x 2.4 commissioned
59 x 2.4 MVAR 11 kV IPDS tender to be opened on
30.11.2017
19 x 2.4 MVAR 22 kV IPDS tender to be opened on
30.11.2017
13 x 2.4 MAVR 110 kV PO placed on M/s Shreem
Electric Limited.
53 x 2.4 MAVR 11/22
kV
RAPDRP tender to be floated
101 x 2.4 MAVR – Erode
Region
11/22
kV
Tender to be floated.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 67
32 x 2.4 MAVR – Vellore
Region
11/22
kV
Tender to be floated.
82 x 2.4 MVAR -
Coimbatore Region
11 kV BLTC note for price bid opening
to be submitted
822 MVAR capacitors at
Distribution level had been
commissioned out of 931
MVAR capacitors planned.
Balance 109 MVAR to be
commissioned. However, for
further enhancement of Reactive
Power, Capacitor bank
provisions have to be arranged
by Planning / Transmission
wings.
25.5 PSDF – Funding of the schemes of the state utilities for installation of capacitors
in the state network at transmission / distribution network
25.5.1 MS, Appraisal Committee & ED, NLDC vide letter dated 22.06.2016 had earlier
stated that the matter had been deliberated by the Appraisal Committee during the
Meeting held on 31.05.2016 wherein, it was decided that assessment of capacitor
requirement be carried out at regional level by engaging expert agency like CPRI.
After due approval, SRPC vide letter dated 03.05.2017 had placed work order on
CPRI for carrying out the assessment studies for Southern region (except Karnataka).
25.5.2 Base case was modeled by SRLDC & SRPC and submitted to CPRI on 23rd
March
2017. CPRI study report was received on 20.12.2017. SRPC vide letter dated
28.12.2017 (Annexure-LIII) had submitted the same to NLDC for further needful
action.
25.5.3 SRPC vide letter dated 16.01.2018 (Annexure-LIV) had also informed the states that
the CPRI Report has been submitted to NLDC and requested the states for further
necessary action at their end.
25.5.4 The following had been noted in the TCC Meeting:
NPC had stated that there are number of schemes of capacitors from all regions.
Certain details had been further sought which could be furnished for further
processing/consideration. In a nutshell they wanted to know the capacitor available
and the capacitors in working condition. Whether earlier installed capacitors had
been considered in the study or not needed to be ascertained.
2 schemes of Telangana (total Rs 32.92 Cr) had been appraised on 25th
Oct 2017.
2 schemes of TN (total Rs 36 cr) had been appraised on 19th
January 2018.
SRPC noted the above.
26 NON-AVAILING OF OCC APPROVED SHUTDOWN
26.1 In OCC Meetings, it had been noted with concern that at times, entities were not
availing OCC approved shut downs as per schedule. Details of availed outages against
OCC approved shut downs (furnished by SRLDC) are given below:
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 68
26.2 In the OCCM, it was noted that SRLDC would conduct a workshop through VC
regarding importance of LC, implications on ATC/TTC/grid, IEGC provisions and
issues in postponement, deferment etc for Andhra Pradesh (Karnataka may join) &
Tamil Nadu. States had been requested to invite field officials who are dealing with
outages for the workshop. NLDC had requested that shutdowns which need approval
from other RPCs were to be submitted well in advance, since prior approval is
required from all concerned RPCs/regions. Rescheduling of approved shutdowns also
was to be intimated at the earliest for approval of the concerned RPCs / regions.
26.3 It was noted that some shutdown proposals were being requested upto the OCC
meeting day. SRLDC required a comprehensive list of all shutdowns to carryout
contingency analysis for critical elements / corridors. All proposals were to be
furnished by 3rd
of each month (for example the proposal for April 2018 were to be
furnished before 3rd
March 2018). Proposals received after 3rd
of each month would
not be considered. Any deferment or changes in the schedule needed to be
communicated in the mid review and before D-3 in the WBOCS system.
26.4 SRPC & SRLDC expressed serious concern on submission of last minute shutdown
requests (for example shutdown of Hosur-Somanahalli) and said this was needed to be
avoided in future.
Entity Aug-17 Sept-17 Oct-17 Nov-17 Dec-17 Jan-18
Availed % with respect to the OCC approved outages
AP TRANSCO 67 59 58 58 59 52
KPTCL 82 100 83 80 60 71
KSEBL NA 100 60 100 100 100
TANTRANSCO 61 69 59 75 59 78
TSTRANSCO 55 43 33 73 83 50
PGCIL, SR1 88 54 47 91 68 86
PGCIL, SR2 80 19 50 42 47 64
NTPC 100 100 100 67 86 60
NLC 100 NA NA 100 0 100
NTPL NA 0 NA NA NA NA
NPCIL 100 NA NA NA 100 NA
PNMTL 0 NA NA NA 50 0
CEPL NA NA 50 NA NA NA
MTL NA 100 NA NA NA 0
Total 73 58 51 69 61 67
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 69
26.5 SRPC requested the constituents to plan outages more diligently and increase
coordination with the field and project officials.
27 STATUS OF PHASE I AND PHASE II OF PROTECTION AUDIT
RECOMMENDATIONS
27.1 With reference to Petitions filed by KSEB (88/MP/2016) and KPTCL (135/MP/2016) seeking
further time-extension for completing their respective Protection Audit Recommendations
(PAR), final Order of Hon‟ble CERC disposing of petitions had been issued on 15.12.2016.
In this Order, Commission, apart from granting last-chance time-extensions to various SR-
Constituents, had also directed SRPC to monitor status of completion of PAR regularly in
PCSC Meetings and submit bi-monthly report to the Commission confirming completion of
Phase-I and Phase-II of PAR of the Constituents of Southern Region.
27.2 In this regard, based on the information furnished various Constituents, a summary table
showing the compliance status of various SR-Constituents as on 14.02.2018 is given below:
Sl.
No.
Constituent
PAR (Phase-I)
Activities
PAR (Phase-II)
Activities
PAR (Ph-I & Ph-
II) Compliance
(%)
Remarks
Stipulated
Completion Date
Stipulated
Completion Date
1 APGENCO
(Hydel) 31.12.2017 31.12.2017 66.66 Based on the status furnished,
timeline for complying with the
remaining pending
recommendations (5 in no.) is
31.03.2018 2 APGENCO
(Thermal) 30.07.2017 --- 83.33 Based on the status furnished,
timeline for complying with the
remaining pending recommendations
(2 in no.) is 30.06.2018.*
3 APTRANSCO 31.03.2017 --- 98.57 Based on the status furnished, the
lone pending recommendation is
expected to be completed by April
2018.
4 TSGENCO
(Hydel) 31.03.2017 31.03.2017 91.18 Based on the status furnished,
timeline for complying with the
remaining pending recommendations
(3 in no.) is June 2018.*
5 TSTRANSCO 31.03.2017 31.03.2017 86.36 Based on the status furnished,
timeline for complying with the
remaining pending recommendations
(12 in no.) is March, 2018.
6 KPTCL 31.05.2017 31.05.2017 61.97 Based on the status furnished,
timeline for complying with the
remaining pending recommendations
(27 in no.) is March 2018.
7 TANGEDCO 31.12.2017 31.12.2017 75 Based on the status furnished,
timeline for complying with the
remaining pending recommendations
(9 in no.) is June 2018.*
8 TANTRANSC
O 31.12.2017 31.12.2017 54.54 Based on the status furnished,
timeline for complying with the
remaining pending recommendations
(60 in no.) is December 2018.*
9 KSEBL 30.11.2016 31.12.2017 96.10 Based on the status furnished,
timeline for complying with the
remaining pending recommendations
(3 in no.) is April 2018.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 70
10 NPCIL
(MAPS) 31.01.2017 --- 88.89 Based on the status furnished,
timeline for complying with the lone
pending recommendation is
September 2018.
All above SR-Constituents were requested to kindly complete their respective pending PAR.
IPP‟s for whom there are pending PAR [viz., Spectrum PGL, Konaseema GPL, APGPCL
Vijjeswaram (Stage-I & Stage-II), & LANCO-Kondapalli PL] were also requested to
complete them at the earliest.
TCC deliberations
Further, all Constituents who are likely to take more time for attending their respective
PAR works, especially APGENCO (Thermal), TSGENCO (Hydel), TANGEDCO &
TANTRANSCO were requested to kindly approach Hon‟ble CERC for obtaining required
time-extensions.
SRPC noted the above.
28 CERTIFICATION OF AVAILABILITY OF TRANSMISSION SYSTEM OF INTER-
STATE AND RPC CERTIFIED FEEDERS
28.1 KSEBL and TANTRANSCO had requested for Availability Certificate for some of the
inter- state lines for PoC charges settlement. These lines are not fully under control of
SRLDC. It was noted that certification may be required for RPC certified lines also. A
procedure needed to be developed to certify these lines. Outages need to be verified by
SRLDC as per the Availability Certification procedure.
28.2 As agreed in the 138th
Meeting of OCC, SRLDC had prepared procedure for reporting of
the outages along with reasons. Outages and availability computation would be submitted
by the respective STUs to SRLDC for verification and subsequently to SRPC for
certification. This would commence from 01st January 2018.
SRPC deliberations
All states were requested to kindly furnish the necessary information as per this
procedure.
29 IEGC RELATED ISSUES REQUIRING ATTENTION/ACTION
29.1 Automatic Demand Management Schemes
29.1.1 In line with clause 5.4.2 (d) of IEGC, Automatic Demand Management Scheme was
to have been provided by all constituents by 1st
January 2011. SRLDC & SRPC
Secretariat had pointed out that automated scheme was to be in place to meet
Regulatory requirements.
29.1.2 In earlier Meetings, the following had been noted:
AMDS logic was finalized as OD >250 MW or 20 % of Schedule, whichever lower,
for 15 minutes when frequency < 49.8 Hz.
SRLDC & SRPC had suggested that new set points at 49.9 Hz be adopted.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 71
States had pointed out that corrective action was already being taken by them as
could be seen that there were minimal incidents satisfying the proposed logic.
Opportunity needs to given to Operator to take corrective action rather than go for
automatic load shedding and existing set points were reasonable. Unnecessary
interruptions to loads were not advisable in the present scenario. In time of
contingency, appropriate urgent action was being taken by SLDCs.
In the 31st Meeting, TCC had suggested that ADMS set points could be reviewed in
the next Meeting.
29.1.3 Number of incidents satisfying the existing logic and at logic of 49.9 Hz is given
below:
Month
Present settings Proposed settings as per IEGC
Frequency < 49.8 Hz for 15
Min. and OD = Min DSM limit
Frequency < 49.9 Hz for 15 Min. and OD =
Min DSM limit
No of
instances
Meeting the
freq. limit
No of
instances
applicable to
states
No of
instances
Meeting
the freq.
limit
No of instances applicable to
states
AP Kar Ker TN TS
Aug-17 NIL NIL 48 5 1 0 6 0
Sept-17 NIL NIL 94 12 1 0 16 3
Oct-17 NIL NIL 106 4 0 0 11 0
Nov-17 NIL NIL 133 5 2 0 16 0
Frequency < 49.85 Hz for 15 Min.
and OD = Min DSM limit
Dec-17 NIL NIL 10 0 0 0 NIL NIL
Jan-18 NIL NIL 10 0 0 0 NIL NIL
29.1.4 In the 136th
Meeting of OCC, after deliberations it had been decided that the setting
would be revised to 49.85 Hz and below for frequency and for deviation of minimum
DSM limits for 15 minutes. It would be reviewed for few months and setting may be
changed to 49.90 Hz (IEGC limit) in next step. An alarm could be set at 49.90 Hz and
below for 10 minutes to enable SLDC Operator to take manual action. Also
performance/functioning of ADMS is required to be tested periodically by respective
SLDCs following the practices similar to that carried out by Kerala.
29.1.5 AP, Karnataka, Tamil Nadu and Puducherry had already implemented the revised
settings. Mock drill had also been completed by Karnataka and Kerala. Telangana and
Kerala had been requested to kindly implement the revised settings.
TCC deliberations
Kerala & Telangana agreed to implement the revised ADMS settings.
SRPC noted the above.
29.1.6 The following had also been noted in the OCC Meetings:
Contingency plan in respect of generation loss at pooling station level for RE.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 72
SRLDC had pointed out that similar to existing ADMS logic (O/D), backing
down of generation during sustained U/Ds during high grid frequency may also
be required.
29.2 UFR and df/dt reliefs
29.2.1. Details of recommended, implemented, SCADA monitorable and actual relief being
realized are shown in the Table below:
State AP TS KAR KER TN PUD SR
Recommended MW A 2782 2965 3539 1173 4176 103 14738
Implemented MW B 2782 2978 4424 1427 4499 109 16129
% B/A 100 100 125 122 108 106 110
SCADA monitorable MW C 1650 2333 4416 1399 3915 100 13813
% C/B 59 78 100 98 87 92 85
Average Visible
Relief in August
2017
MW E 1216 1437 2497 1121 2290 77 8637
Wrt monitorable % E/C 74 62 57 80 58 77 63
Average Visible
Relief in September
2017
MW F 1215 1425 2489 1114 2280 77 8600
Wrt monitorable % F/C 74 61 56 80 58 77 62
Average Visible
Relief in October
2017
MW G 1448 878 1915 1176 2116 94 7676
Wrt monitorable % G/C 88 38 43 84 55 94 56
Average Visible
Relief in November
2017
MW H 1473 978 2724 1229 2346 95 8844
Wrt monitorable % H/C 89 42 62 88 60 95 64
Average Visible
Relief in December
2017
MW I 1347 1192 2643 1180 2270 75 9415
Wrt monitorable % I/C 82 51 74 84 58 75 73
Average Visible
Relief in January
2018
MW J 1261 1527 3139 1168 2407 80 9662
Wrt monitorable % J/C 76 66 88 83 64 80 75
29.2.2 In earlier Meetings, the following had been noted:
It was noted with concern that visible relief in Telangana, Karnataka and Tamil
Nadu was less on sustained basis over a period of time. They had been suggested to
initiate suitable steps to improve visibility. In the 138th
OCC (11.12.2017), all three
states had informed that they were contemplating additional feeders to improve
relief.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 73
APTRANSCO had informed that out of 25 RTUs, 20 RTUs had been
commissioned and the SCADA mapping percentage had increased to 59.3 %. 5
RTUs would be commissioned shortly. For balance 30 %, a composite proposal
has been put up for PSDF funding.
TANTRANSCO had informed that additional RTUs and transducers were to be
procured to achieve 100 % SCADA mapping.
TSTRANSCO had informed that 6 RTUs had been provided for Solar Generators
and for 17 RTUs procurement was being taken up and it could take 4-5 months.
There were 18 RTUs for Interstate feeders and some would provide UFR and df/dt
relief quantum also. With this, they were likely to achieve 100 % mapping.
TCC deliberations
It was noted that both TN & Telangana had initiated steps to improve the realized
relief. There was likely to be considerable improvement by February/March 2018.
SRLDC was kindly requested to co-ordinate with TN & Telangana in this regard.
SRPC noted the above.
29.2.3 In the 7th
Meeting of NPC held on 08.09.2017 (refer Annexure-XXVI), it had been
agreed that each RPC would submit details/progress of feeder mapping to NPC
Secretariat. NPC had sought views of members on the review of quantum of load
shedding and stages of frequency. After deliberations, it had been agreed that there is
need for review of quantum of load shedding without introduction of additional
slabs/stages of frequency. Therefore, RPCs may deliberate on additional slabs of
frequency as well as raising the set frequency for UFR operation. These views of RPCs
would be put up in next meeting of NPC. In respect of ensuring proper functioning of
AUFR and df/dt relays, Mock test is good enough to test the healthiness of the AUFR
and df/dt relays. The frequency of site inspection was proposed to be up to six months.
RPC Secretariat shall carry out periodic inspection, in line with the provisions of
IEGC. RPC Secretariat to furnish the inspection reports to NPC Secretariat.
29.2.4 In the OCC Meetings, the following had been noted:
All states had opined that there is no need for additional slabs of frequency as well
as raising the said frequency for UFR operation.
Frequency of site inspection was proposed to be up to six months which was
agreed by all the states.
SCADA mapping validation for TS & TN to be taken up by SRLDC in
coordination with the SLDCs. The exercise to be completed within two months (by
Feb 2018). It would cover the loading (average loading as per CERC order),
clarity on radial, mixed feeders (RE), identification of new feeders to improve the
average loading etc.
TCC deliberations
All constituents had expressed concern on paucity of additional radial feeders
without overlap and also since islanding loads could not be identified for any of the
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 74
relief schemes. Being a large integrated grid, chances of fall of frequency were less
and system should be provided space for self-healing before df/dt or UFR sets in.
TCC had endorsed these decisions of OCC that there was no need presently for
additional slabs of frequency as well as raising the said frequency for UFR
operation.
Regarding quantum (based on Power Number), the SR share was being complied
as and when the same was being communicated.
It was noted that both TN & Telangana had initiated steps to improve the realized
relief. There was likely to be considerable improvement by February/March 2018.
SRLDC was kindly requested to co-ordinate with TN & Telangana in this regard.
SRPC noted the above.
29.3 Restricted Governor Mode of Operation (RGMO)/FGMO of Generating Units
29.3.1 RGMO response is being analyzed in the Meetings of OCC. SLDCs were also to
analyze RGMO instances posted by SRLDC for the generators in their control area
and initiate suitable action as per Order in respect of 84/MP/2015. Inadequate
Response was to be taken up with SERC (Petition No.302/MP/2013).
29.3.2 Performance of RGMO is being analyzed in the OCC forum. Summary for Southern
Region (state-wise details are given in Annexure-LV) is given in the Table below:
Hydro Thermal TOTAL
Possible
(MW)
Actual
(MW) %
Possible
(MW)
Actual
(MW) %
Possible
(MW)
Actual
(MW) %
16.08.2017
44 45 104% 939 235 25% 983 280 29%
12.11.2017
64 2 3% 1091 340 31% 1155 342 30%
09.12.2017 (12:59)
-74 -48 65% 894 342 38% 968 390 40%
29.3.3 As per 5th
Amendment to IEGC, gas stations above 50 MW Installed Capacity were
also to come under RGMO/FGMO Operation w.e.f. 1st October 2017. SLDCs (AP &
TN and NTPC (Kayamkulam) had been requested to take necessary action to comply
with this Amendment.
29.3.4 All generators should keep a Margin for RGMO response while declaring DC in all
level ie at full load/partial load operation.
29.3.5 Special Meeting had been conducted with Tamil Nadu (25.09.2017) and ISTS
connected IPPs (27.09.2017) and actionable points are given in Annexure-LVI. VC
with Andhra Pradesh was also held on 06.11.2017 and with KSEBL on 07.11.2017.
KPTCL had joined at SRLDC on 07.11.2017. Each SLDC had been requested to
conduct Special Meetings with generators under its control area and SRLDC / SRPC
could join through VC.
29.3.6 FRC computations were also to be undertaken by the SLDCs in line with approved
methodology of CERC.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 75
29.3.7 The following had been noted in the TCC Meeting:
SLDCs were suggested to have periodic Meeting with generators/Discoms in their
Control Area to review RGMO performance and FRC response for the events
posted by SRLDC. Persistent non-performance needed to be taken up with the
SERCs.
NTECL Vallur had informed that they had put an alarm so that when any
FGMO/RGMO is initiated, schedule modification is suspended for some time. TCC
requested other generators to kindly consider the same.
All IPPs / MPPs to ensure RGMO margin (ensure that total schedules of LTA,
MTOA, STOA and PX are not more than the NOC (normative ex bus)). SRLDC vide
letter dated 07.02.2018 (Annexure-LVII) had addressed to IPPs/MPPs in this
regard. IPPs/ MPPs had been requested to ensure the total schedule is equal to or
less than the NOC granted. NLDC also endorsed the procedure.
29.3.8 SRPC noted the above.
29.4 Demand Estimation for Operational Purpose (Clause 5.3 of IEGC)
29.4.1 Each SLDC was to create a mechanism and facilities to facilitate on-line demand
estimation of demand for daily operational purpose for each 15 minutes block by
01.01.2011. In this regard, following may kindly be noted as contained in Order dated
19th
December 2013 of Hon‟ble CERC in respect of Petition No.
249/250/251/MP/2012:
“We direct all STUs/SLDCs of the Northern Region, Southern Region and Eastern
Region to forecast their demand and make adequate arrangements to avoid
dependence on Unscheduled Interchange for Meeting their demand or for injecting
short term surplus power, irrespective of the frequency.”
Load Forecasting tool meeting the regulatory requirement was yet to be developed by
all utilities. The forecast was required for RRAS and Renewable Framework also.
SRPC noted the above.
29.5 Sudden Change in Demand/Frequency Excursion
29.5.1 In earlier Meetings, violation of Clause 5.2 (j) of the IEGC Regulations had been
highlighted. No user is to cause sudden variation in its load by more than 100 MW
without prior intimation to and consent of the RLDC. Similarly no user should reduce
the generating unit output by more than 100 MW without prior intimation to and
consent of the RLDC. Necessary action is sought in respect of demand and generation
management as well as power purchases, so that clause 5.2 (j) of IEGC Regulations is
not violated.
29.5.2 The changeovers are being reviewed in the OCC Meetings. AP & Karnataka may need
to further stagger their changeover.
SRPC noted the above.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 76
29.6 Arranging of interruptible loads in four groups
29.6.1 As per IEGC, to maintain the frequency within stipulated band and also to ensure
network security, interruptible loads are to be arranged in four groups of loads. This
was for the purpose of scheduled power cuts/load shedding, loads for unscheduled
load shedding, loads to be shed through UF relays, df/dt relays and loads to be shed
under any SPS Scheme. These loads are to be grouped in such a manner that there
was no overlapping between different groups of loads.
29.6.2 Existing schemes were not meeting Regulatory requirement fully and further action
was required in this regard. Constituents had been requested to ensure necessary
compliance.
SRPC noted the above.
29.7 PSS Tuning
29.7.1 5th
Meeting of PSS tuning was conducted on 26th
July 2017 and MoM is available at
SRPC website. PSS Study group had analyzed the Step Response Test Reports for the
generators which had furnished the reports and recommendations had been finalized.
It had been kindly requested that necessary action may be taken as finalized in the
PSS Meetings. SRT of following units had been analyzed in the PSS Meetings and
necessary action had to be taken as per Recommendations:
Entity Generating Stations/Units
APGENCO Rayalaseema TPS U1 to U5; VTPS U1 to U4 & U7; SDSPP U1&U2;
Srisailam RB HEP U1 to U7; Lower Sileru HEP U1 AP IPP HNPCL U1 & U2 TSGENCO Nagarjunasagar HEP U1 to U8; Srisailam LB HEP U1 to U6; Kakatiya
TPS U1 & U2; Kothagudem TPS U10 & U11; Singareni Collieries
U1 &U2 (Reports to be analyzed) KPCL Raichur TPS U1,2,3,5,6,7 & 8; BTPS U1 to U3; Varahi UGPH HEP U1
to U4; Nagjheri HEP U1 to U6 (U6 report to be analyzed); Sharavathy
HEP U1,2,3,4,5,6,7,9, 10 & 8 (Report to be analyzed), Raichur TPS U4
(Report to be analyzed) KAR IPPs UPCL U1 & U2; JSWEL U1 to U3 KSEBL TANGEDCO MTPS-I U1 to U4 (U1 Report to be analyzed); NCTPS St-I U1 to U3;
Tuticorin TPS U2 to U5; NCTPS St-II U1; Kadamparai HEP U1 & U2,
Mettur-II (Report to be analyzed). TN IPPs CGS NTPC- Ramagundam U7 & 4 (Report to be analyzed); NTPC-Simhadri
U1 to U4; NTPC-Talcher STPS St-II U3 to U6; NTECL-Vallur TPS U1
to U3; NLC-Neyveli TPS II U4 to U7; NLC-Neyveli TPS II U1 to U3;
KGS U2 (Report to be analyzed); NPCIL-KKNPP U1 & U2 (Report to
be analyzed) ;NLC-Neyveli TPS II Exp. U1 & U2; (NLC & TN JV)
NTPL U1; NTPC-Kudgi U1 ISTS connected IPPs TPCIL U1 & U2 (U2 Report to be analyzed); Coastal Energen U2; IL &
FS U1 & U2
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 77
For the following Units, PSS is to be tuned and SRT to be carried out / information not
available.
Entity Generating Stations/Units
APGENCO VTPS U5 & U6; Lower Sileru HEP U2 to U4 AP IPPs TSGENCO Kothagudem TPS U7 & U8 KPCL Yeramarus TPP KAR IPPs JSWEL U4 KSEBL Idukki HEP U1 to U6 TANGEDCO NCTPS St-II U2; Tuticorin TPS U1; Kadamparai HEP U3 & U4 TN IPPs STCMS CGS NTPC-Ramagundam U1, U2, U3, U5 & U6; NTPC-Kudgi U2; NLC-
Neyveli TPS I Exp. U1 & U2 (SRT reports not submitted); NPCIL-
KGS U1, U3 & U4 ( Full Report not submitted for U4); NPCIL-MAPS
U1 & U2; ISTS connected IPPs Coastal Energen U1; Lanco Stage II & III; SGPL-Nellore; SEL U1 to
U3; MEL U1 & U2
29.7.2 SRPC urged generators to kindly initiate necessary action on the recommendations
finalized in the PSS meetings.
29.8 Energy Generation data Management from Renewable Energy Sources
Monthly generation data in respect of renewal energy sources is to be submitted to CEA
with a copy to SRPC.
29.9 SPS review
29.9.1 SRPC vide letter dated 06.10.2017 had requested NLDC to review the SPS schemes
for modification / disconnection etc. NLDC vide letter dated 01.12.2017 had
suggested revision in SPS for deliberation in RPC forum and approval so as to enable
the commissioning of the revised schemes / removal of schemes by CTU.
29.9.2 SRPC vide letter dated 06.12.2017 had furnished comments on the NLDC letter for
further examination. A VC was conducted on 27.12.2017 among NLDC, SRLDC and
SRPC. It was agreed that SPS 1-C, 5 & 6 would be blocked. SPS-8 will be reviewed
by NLDC. Revised logics for SPS 1-A, 1-B and 3 would be implemented. SRPC vide
letter dated 10.01.2018 had requested NLDC to expedite the SPS blocking /
modification. NLDC vide letter dated 02.01.2018 had informed that SPS-8 (outage of
765 kV Aurangabad-Sholapur D/C) was required and requested SRPC /WRPC forum
to concur for the same for implementation by Powergrid. SRPC vide letter dated
10.01.2018 had informed the concurrence of OCC. NLDC vide letter dated
12.01.2018 (Annexure-LVIII) had communicated to PGCIL for the modifications in
logic after concurrence of OCC of WRPC & SRPC. The following was noted:
Blocking of SPC-1C (S/c operation of 765 kV Raichur-Sholapur lines), SPS-5 (400
kV Wardha-Parli line), SPS-6 (400 kV Parli-Sholapur lines) was agreed considering
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 78
present system conditions to minimize chances of nuisance due to mal-operation.
SPS-4 (400 kV Raichur-Wardha) was already communicated to be blocked.
Generation backing down in Western Region may be removed from all SPS.
In SPS-1A, SPS-1D, SPS-3 & 8 the threshold of SPS operation was agreed to be
modified for the present system and network conditions.
TCC deliberations
MS, SRPC had thanked NLDC for the fast response on SPS related issues in which
three SPS were blocked while logic was modified for four SPS at the instance of
SRPC Secretariat.
It was noted that the revised logic of SPS was to be implemented by SR-I, PGCIL.
SRPC noted the above.
29.10 Issues related to scheduling of power
KSEBL vide letter dated 12.02.2018 (refer Annexure-XXXVI) had intimated that some
of the ISGS having multiple PPA from the same plant to the same utility (KSEBL) on
long term basis had resorted to gaming during the period of coal shortage/poor coal
quality condition. Specific cases of M/s Jindal Power Ltd and M/s Jabua Power were
taken up with SRPC and SRLDC during November 2017. As per various provisions of
IEGC, such as 2.3.1, 6.4 & 6.5, the ISGS had to furnish all relevant data to RLDC
which is to be made available to the constituents by the RLDC. This was not being
followed now. Another issue to be deliberated in this context is regarding IEGC
Regulation 6.5.19 vis-à-vis merit order dispatch. Letter dated 06.11.2017 (Annexure-
LIX) from KSEBL in this regard is attached herewith for perusal. The matter had been
taken up with CERC from SRPC, for which a clarification is expected. However, details
to be furnished by the ISGS to RLDC as per IEGC are not being furnished/collected by
RLDC even now.
TCC deliberations
KSEBL had stated that all ISG Stations (including IPPs/MPPs) are to be monitored
by RLDC as per IEGC provisions. Availability data from these ISGS (IPPs/MPPs)
is not being communicated through RLDCs for scheduling as per MOD. If total DC
of the station and DC contract-wise (different contracts may have different rates
even from same station) is furnished through RLDC, then MOD can be effectively
implemented even during coal shortage condition.
MS, SRPC had informed that some of the states had informed about difficulties
faced in real time operation on account of revision of DC during low stock of coal
or late arrival of coal rakes (for generators whose scheduling is not carried out on
percentage basis). Some generators are having multiple LTA contracts with the
states from the same unit of the station (may be at different rates). This issue was
discussed in the CC Meeting. Concern of the state had been put up for kind
consideration of Hon‟ble CERC vide letter dated 04.12.2017 (Annexure-LX) for
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 79
suitable regulatory provision which may need to be contemplated to cover cases of
revision of DC / schedule of stations under coal shortages conditions to prevent any
gaming.
MS, SRPC had further informed that the issue of DC declaration (PPA wise) of
ISGS (IPPs/MPPs) had been taken up with SRLDC vide letter dated 19.01.2018
(Annexure-LXI) in compliance of Hon‟ble CERC Order in respect of 28/MP/2016.
SRPC noted the above.
29.11 Restriction of DC by RLDC- Observation in AG audit
KSEBL vide letter dated 12.02.2018 (refer Annexure-XXXVI) had intimated that
SRLDC had been restricting DC of CGS considering normative auxiliary consumption
from January 2016. This matter had been deliberated in the previous SRPC Meeting
also. From June 2017, DC accepted by SRLDC for scheduling is given by SRLDC. For
the period prior to June 2017, with the available data, the difference between the DC
made by the CGS and the actual figure considered by SRLDC for allowing schedule is
related as surrender by the state. The matter has been pointed out in the AG‟s audit
during January 2018. This matter had also been deliberated in the previous OCC, CC,
TCC and SRPC Meetings. Committee may deliberate on the matter and request SRLDC
to furnish the details of the previous period.
TCC deliberations
SRLDC had stated that in the new scheduling programme the data was available. In
respect of the old data, it had to be ascertained whether the same was stored or not.
In case the old data is available, the same would be shared.
SRPC noted the above.
29.12 Other Issues requiring kind attention of TCC / SRPC
Following issues which are being followed up in the Meetings of Sub-Committees of
SRPC also merit kind attention:
In the 7th
Meeting of NPC held on 08.09.2017 (refer Annexure-XXVI), NPC had
emphasized need for having an accurate All India power system data base for
carrying out accurate power system studies for operational and planning horizons. It
was observed that data mining needed to be carried out for this purpose. It was
agreed that POSOCO may prepare required format and circulate to all RPCs and in
turn, RPCs may obtain data from their constituents.
In the 7th
Meeting of NPC held on 08.09.2017 (refer Annexure-XXVI), NPC had
informed that CERC had entrusted NPC to prepare Guidelines on “Availability of
communication System” in terms of Regulation 7.3(i) of CERC (Communication
System for Inter-State transmission of electricity), Regulations, 2017. In this regard,
it had been decided to constitute a Working Group with Members from RPCs,
POSOCO, CTU, CEA, PGCIL and NPC.
In the OCC Meeting, SRLDC had informed that they had received a letter from
MNRE (on Ministry of Defence request) to formulate a methodology to switch On /
Off the wind farms / Turbines near to IAF / Railways during war time using
centralized system in order to avoid any interference. SRLDC was to communicate
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 80
to states on the information sought by MNRE. They would seek clarification on
„vicinity‟ from MNRE.
All six units at Srisailam (TSGENCO) operated in condenser mode at different
times. During day time, simultaneously 4 units also were put in condenser mode.
At N‟Sagar (TSGENCO) all units (except 4 & 6) were put in condenser mode and 3
units were simultaneously put in condenser mode also.
TSTRANSCO had convened a Meeting on 23.10.2017 with L & T Metro Rail
(Hyderabad Ltd) and Discoms in which, SCADA, Operational, Telecommunication
issues etc were deliberated. TSTRANSCO vide letter dated 13.11.2017 had
communicated in this regard to L & T Metro Rail
KPTCL had implemented the 2nd
stage of UVR on 18.10.2017 for a total relief of
150 MW (50 MW in 3 stations).
PGCIL had informed that they had commissioned 400 kV, 250 MVA transformer at
Bhadravathi. The transformer was diverted from Moga.
N-1 violation of Hoody, Gazuwaka and Nellore, ICTs was noted.
CEA/NPC vide letter dated 21.12.2017/08/01.2018 had intimated schedule of
Training Program of Task-I & II of Package B being carried out by M/s Powertech
labs at RPCs. For SRPC the dates proposed were from 5th
February 2018 to 7th
February 2018.
In the 136th
OCCM after deliberations it had been decided that for planning
purposes, ISG generators would declare tentative DC (as close as possible for the
next three days). This information would be circulated in a closed group. A Google
group ([email protected]) had been created for this purpose.
SRPC had observed that there was regulation up given for the date 17.09.2017 from
03:15 hours to 06.00 hours (around 2,000 MW) and also from 05:30 to 09:30 hours
about (around 1,200 MW). Frequency touched 50.32 Hz at 06:04 hours when
Regulation up was kicked in. On scrutiny of RRAS schedule for RGPPL_IR, it was
found that down instruction was being implemented from 02:15 hours to 05:45 hours
on the same day. However, from the NLDC website, it was seen that no such
instruction appeared to have been given to RGPPL_IR. SRPC vide letter dated
20.09.2017 (Annexure-LXII) had taken up this issue with NLDC and requested to
examine the same. In the Meeting it was noted that NLDC vide letter dated
03.10.2017 (Annexure-LXIII) had replied to the same and had noted: RRAS
(Regulation Up) was dispatched from 05:30 hours to 09:30 hours on 17.09.2017 as
per prevailing grid conditions. Grid frequency increased to 50.32 Hz at 06:04 hours
and regulation up was withdrawn from 06:30 hours. It was requested that complete
sequence be seen before coming to any conclusion and mentioned that details are
already available at POSOCO website. Subsequently SRPC vide letter dated
13.10.2017 (Annexure-LXIV) had again taken up the issue with NLDC.
SRPC vide letter dated 30.08.2017 (Annexure-LXV) had brought to kind attention
of NLDC regarding RRAS schedules on Non-adherence of merit order based
dispatch and Triggering of RRAS instructions during Congestion Warning Notice
period. NLDC reply dated 13.09.2017is given at Annexure-LXVI.
Member (Planning), CEA vide letter dated 08th
September 2017 (Annexure-LXVII)
had informed TANTRANSCO that BHEL has proposed to conduct system studies
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 81
for the State Grid of TN for increasing the transmission efficiency, in view of impact
of large scale integration of renewable power in Tamil Nadu. They had also offered
to carry out these studies at their own cost as a special case. Since these studies
would be valuable for Tamil Nadu for the purpose of efficient utilization of
transmission system, this would be a good opportunity of getting these studies done,
with no cost to Tamil Nadu. CEA had also offered the services of CEA Engineers to
be associated with the study.
SRLDC had expressed concern that there is a huge gap between guidelines and
actual practice for commissioning/charging of new elements. Last minute demands
were being received for commissioning/charging of elements even though Special
Meetings and Workshops had been conducted to make constituents aware of
requirements and importance of furnishing the information in the specified format. In
a number of cases, data mismatch was observed after commissioning of the elements,
which is not rectified by them on priority after certification. The approved procedure
needs to be diligently followed.
It was observed during the BSRP workshop at Telangana that 2 nos of DG sets
available (2 x 250 KVA) at Jurala were not sufficient for starting one unit (40 MW)
and auxiliaries at Jurala for black start. SRLDC vide letter dated 13.10.2017 had
taken up the issue with TSSLDC highlighting provisions of CEA (Technical
Standards for connectivity to the Grid), Amendment Regulations, 2013 and CEA,
(Technical Standards for construction of electrical plants and Electric lines)
Regulations 2010. TSTRANSCO vide letter dated 13.10.2017 had taken up the issue
with TSGENCO and requested to arrange adequate capacity of DG set for supplying
auxiliary power supply to start the units at Upper Jurala.
TSGENCO stated that the DG upgradation may not be required at Jurala since
water is available only few months and it may not be effective for Black Start
Restoration.
It was pointed out that the requirement was as per CEA Regulation and was
needed to be complied.
Review of BSR Procedure from Nagjheri to BTPS and Jurala to Raichur TPS was to
be carried out by KAR SLDC and SRLDC.
In Review Petition No.16/RP/2016 in Petition No.10/SM/2014 filed by PCKL,
Hon‟ble CERC in its Order dated 19.12.2017 had noted „………… it can be
concluded that Karnataka was in agreement to have this LTA during deliberations of
the 24th
meeting of Standing Committee on Power System Planning…………Since
the said order dated 11.3.2013 with regard to date of COD for Hassan –Mysore line
had not been challenged by any parties before any forum, the same has attained
finality………..UPCL vide affidavit dated 29.12.2016 has stated that the delay of 16
months ( April 2011 to August, 2012) in the commissioning of Unit-2 is due to delay
on the part of PCKL whose responsibility was to ensure 400 kV lines from UPCL
switchyard. ……………However, the actual liability of transmission charges
corresponds to the LTA quantum only. In view of this, the prayer of the review
petitioners to consider LTA quantum of 421 MW instead of 939 MW cannot be
accepted and there is no error apparent in our order………………The Commission
after considering the deliberations of the meeting held on 31.3.2015 had taken a
conscious view in order dated 30.6.2016 that Karnataka would pay only the UPCL
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 82
injection PoC Charges (Rs/month) for the minimum injection slab rate for Southern
Region for the application period from 1.7.2011 to 30.4.2015. The Commission had
also directed in the said order that after the 3rd
amendment to the Sharing
Regulations, which came into effect from 1.5.2015, Karnataka would pay the
withdrawal charges……………‟.
Hon‟ble Commission in Order dated 15.12.2017 in Petition No. 184/TT/2016 in
matter of „Determination of transmission tariff for ± 800 kV Biswanath Chariali-
Agra HVDC POLE-II (1500 MW HVDC Terminal at Biswanath Chariali and Agra)
along with Earth Electrode line and Earth Electrode Station for both Biswanath
Chariali and Agra from anticipated COD1.9.2016 to 31.3.2019 under the
transmission system associated with "North East-Northern/Western Inter Connector-
I Project’ had passed the Order, „…………. 49. The petitioner shall be entitled to
recover the annual fixed charges as approved above from the DICs of all regions as
per the provisions of the CERC (Sharing of Inter-State Transmission Charges and
Losses) Regulations, 2010 as amended from time to time………….50. The petitioner
shall inform the Commission on receipt of the grant from PSDF and shall file a fresh
combined petition in respect of assets covered in Petition Nos.67/TT/2015 and
184/TT/2016 within 6 weeks from the date of receipt of the grant……………..‟
Hon‟ble CERC in Order dated 19.12.2017 in Petition No. 214/TT/2016 in matter of
„Determination of transmission tariff from anticipated COD to 31.3.2019 for 2 nos
400 kV bays each at Nagapattinam PS and Salem New (Dharmapuri) for terminating
Nagapattinam PS- Salem New (Dharmapuri) 765 kV D/C line (initially charged at
400 kV) being implemented under tariff based bidding and 1 no. 63MVAR line
reactor at Nagapattinam PS and Salem New (Dharmapuri) each for both circuits of
Nagapattinam PS and Salem New (Dharmapuri) 765 kV D/C line (initially charged
at 400 kV) under ―Common Transmission scheme associated with ISGS projects in
Nagapattinam/ Cuddalore area of Tamil Nadu- Part-A1 (b)‖ in Southern Region‟,
had passed the Order, „………Considering the surrounding facts leading to the
implementation of HCPTC XI which includes the instant asset, the decision to charge
the transmission line at a lower voltage till the demand for evacuation picks up and
the prospect of future use of the assets, the Commission is of the view that the
transmission asset shall be serviced through PoC mechanism.‟
Hon‟ble CERC in Order dated 21.11.2017 in Petition No. 71/TT/2017 in matter of
„Petition for determination of transmission tariff from DOCO to 31.3.2019 for 400
kV Salem PS (Dharmapuri)-Salem 400 kV D/C quad line along with new765/400 kV
pooling station at Salem (Dharmapuri) (initially charged at 400 kV) and bay
extensions at Salem 400/220 kV existing sub-Station under transmission system
associated with common system associated with CEPL and Ind-Bharat Power
(Madras) Limited LTOA generation projects in Tuticorin area- Part-B" in Southern
Region‟ had passed the Order, „………It is observed that the instant asset is put to
use since Salem Pooling Station is connected to existing Salem (400 kV) Sub-station
and to Nagapattinam Sub-station. The instant assets form part of the meshed
network. Therefore, the transmission charges associated with the instant assets shall
be recovered through PoC mechanism. The issue raised by TANGEDCO is that it
will have to bear entire transmission charges because only it has PPA for 558 MW.
Post notification of 2010 Sharing Regulations, 2010, no asset is bilaterally billed
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 83
once it is put under PoC pool and it is being borne by the beneficiaries/DICs who
are using the asset. Hence, concerns of TANGEDCO are addressed.’
Hon‟ble CERC in Petition No. 235/TT/2016 in matter of „Approval of transmission
tariff of Tuticorin PS -Salem PS 765 kV D/C line (initially charged at 400 kV) along
with Bay extensions at Salem PS and Tuticorin PS and 80 MVAR Line Reactors at
each end of both circuits of Tuticorin PS-Salem PS 765 kV D/C line (initially
charged at 400 kV) (COD: 13.11.2016) under “Transmission System associated with
Common System Associated with CEPL and Ind-Bharat Power (Madras) Limited
LTOA Generation Projects in Tuticorin Area-Part-B” in Southern Region from COD
to 31.3.2019 ……………………‟ vide Order dated 19.09.2017 had stated, „87. We
have considered the submissions of the respondent and the petitioner. Neither
TANGEDCO nor the petitioner has denied the quantum of 558 MW LTA being
operated against the total LTA capacity of 2000 MW. The transmission line (765 kV)
has been charged on 400 kV level which is sufficient to carry power for CEPL and
utilization of transmission capacity. It is noticed that the asset covered in the instant
petition is put to use since Salem Pooling Station is connected to existing Salem (400
kV) Sub-station and to Nagapattinam Sub-station. The asset forms part of the
meshed network, therefore the transmission charges associated with the assets
covered in the instant petition shall be recovered through PoC mechanism.‟
TPCIL had filed a Petition No.193/MP/2016 in the matter of „Petition under
Regulation 6.5(17) of the CERC (Indian Electricity Grid Code) Regulations, 2010
(Grid Code) …… seeking a direction to the respondents to act pursuant to the Grid
Code and carry out consequential steps post declaration of Grid Disturbance‟. In
the Order dated 19.12.2017, Hon‟ble Commission had stated, „……..30. We hold that
the provisions of Regulation 6.5.17 are attracted in present case since the event is a
grid disturbance………31. However, we observe that Regulation 6.5.17 of the Grid
Code requires certification of grid disturbance and its duration to be done by the
concerned RLDC. Accordingly, we direct SRLDC to certify the event under instant
Petition. On the “period affected by grid disturbance” we have passed directions at
Para 47 of this Order……32. We observe that Regulation 6.5.17 also provides that
scheduled generation of „all the ISGS‟ present in region has to be revised to their
actual generation. We note that there may be an event which does not affect all ISGS.
The words „all the ISGS’ should be read as „all the affected ISGS‟, since revision of
schedule should not be carried out for the ISGS which are not affected by particular
grid disturbance………37.....Once an incident is categorised as “grid disturbance”
as per The CEA (Grid Standards) Regulations, 2010, the provisions of Regulation
6.5.17 of the Grid Code is applicable. RLDCs and RPCs are directed to provide
historical data where each regulation (6.5.16 or 6.5.17) was applied within three
months of issue of this order. On receipt of this data from RLDCs and RPCs, we also
direct the staff of the Commission to analyse the applicability of Regulation 6.5.16
and Regulation 6.5.17 under different circumstances and propose draft amendment
to the Grid Code, if required…….45. Hence, the schedule should be revised to actual
for power supplied under Long term/ medium term for the period affected by grid
disturbance. After certifying the “period affected by grid disturbance” as already
directed, the DSM charges be revised accordingly for MTOA……48.The Commission
is in the process of finalizing the draft procedure submitted by NPC. Once the draft
procedure as submitted by NPC is approved by the Commission, the accounts related
to bilateral short term transactions and power exchange transactions of the present
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 84
case shall also be settled as per that procedure.‟
SRLDC vide letter dated 24.01.2018 had certified that tripping of 400 kV Nellore
Pooling Station – TPCIL line and 400 kV Nellore Pooling Station – NCC line
leading to tripping of TPCIL units on 30.12.2015 (06:02 hours to 07:17 hours is
certified as Grid Disturbance
SRPC had accordingly revised the account.
In Petition number 88/MP/2016, Hon‟ble CERC vide its Order dated 05.12.2017 had
stated, „……21. In case, the generator has constructed its dedicated line and
commercial billing is being done at interface with ISTS i.e. at termination point of
dedicated line, check meter shall be installed in addition to main meter to ensure
that in the event of mal-operation of main meter, the data could be retrieved through
check meter………25.We are constrained to state that not providing data by PGCIL
for the aforesaid period is untenable and would not be tolerated in future.‟
Hon‟ble CERC in Petition No. No. L-1/225/2017/CERC in matter of „Terms and
conditions of tariff for the tariff period starting from 1.4.2019- Seeking of
information from Central Generating Companies, Joint Ventures Companies,
Independent Power Producers and Central/Inter-State Transmission Companies
whose tariff is being regulated by CERC‟ vide Order dated 10.11.2017 had sought
certain information as the Commission intends to start the process of finalizing the
Terms and Conditions of Tariff Regulation for the tariff period commencing from
1.4.2019.
NTPC had filed a Review Petition No. 44/RP/2016 in Petition No. 236/MP/2015 in
matter of „Review Petition ………. in Petition No. 236/MP/2015 passed by the
Commission‟. Hon‟ble Commission had passed the Order on 17.10.2017 in respect
of KTL and other issues.
PGCIL had filed a Review Petition No. 42/RP/201 in Petition No. 236/MP/2015.
Hon‟ble Commission in Order dated 11.10.2017 had stated, „… Since Narendra sub-
station was part of Kudgi TPS and the Petitioner delayed in achieving COD of the
sub-station, it is required to pay the transmission charges to KTL….. Therefore, the
Review Petitioner becomes liable for payment of transmission charges to KTL for the
period 24.8.2015 till 11.12.2015. To this extent, the impugned order shall stand
modified……. 23. We are of the view that there is no patent illegality or error in
directing CTU to raise the bills for transmission charges for payment to KTL.‟
Information regarding Cyber Security to be furnished to Chief Engineer, DPD,
CEA, New Delhi. Report on Physical Security, other Mock Drills for CMP, Mock
Drill for Black Start Restoration to be furnished to Chief Engineer, DMLF, CEA,
New Delhi. Copy of the report is to be sent to SRPC Secretariat by e-mail.
SRLDC & SRPC had stated that Point to Point Black Start mock exercise needs to
be given more importance and completed twice a year.
Comprehensive award scheme for the year 2016-17 details to be furnished by STU
(through SLDC) to [email protected]. Details of PGCIL and ISTS licensees to be
furnished to SRPC (through SRLDC) and to [email protected]. These details need to
be furnished by 15.03.2018. The details had been communicated in the OCC
webgroups.
SRPC requested the concerned entities to kindly take necessary action and ensure
compliance.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 85
30 IMPLEMENTATION OF PROTECTION SUITE / PROTECTION MANAGEMENT
SYSTEM (PMS) FOR SOUTHERN REGION
30.1 In pursuance of the recommendations of Task Force on Power System Analysis under
Contingencies constituted in the aftermath of Grid Disturbances in July, 2012, SRPC in their
26th
Meeting held on 20th
December, 2014 at Visakhapatnam, had approved a proposal to
procure Protection Suite (Protection Management System - PMS) that comprises Web-based
Management Software and Protection Setting Calculation Tool through PSDF funding.
Subsequently, steps had been taken to get the scheme approved from PSDF, and Sanction
Order in this regard had been received vide MoP letter no: 10/1/2014-OM dated 02.01.2017.
Based on this, tender for executing the Project, “Procurement of Web-based Management
Software and Protection Setting Calculation Tool for Southern Region”, had been invited
through open bidding process from qualified and reputed bidders through SRPC tender
notification dated 23rd
March 2017. After evaluation of the received bids (technical &
financial), the project had been awarded to M/s PRDC Pvt. Ltd. (PRDC) on 09.08.2017. The
execution period for the Project is about 18 months from the date of placement of LoA (also
called “Effective Date”), and is followed by an Extended Technical Services period of 5
years.
Detail of the project implementation including Milestone-wise status is given at
Annexure –LXVIII.
30.2 The following had been noted in the TCC Meeting:
MS, SRPC had informed that M/s PRDC had imparted training during November /
December 2017. The data centre had been set-up in SRPC and had been inaugurated
during the last PCSC Meeting held on 31st January 2018. He had thanked all the states for
the kind cooperation extended in this regard.
TSTRANSCO had requested for data collection for stations at 132 kV also. SRPC
Secretariat clarified that as also noted earlier, collection of data for stations one voltage
level below 230/ 220 kV was not under scope of the project. However provision had been
made to ensure modeling of the Sub Stations including Wind/ Solar Pooling stations at one
voltage level below 230/ 220 kV (132 kV in AP & TS, 110 kV in Tamil Nadu &
Puducherry, 66 kV & 110 kV in Karnataka & Kerala) by PRDC provided required data for
these stations is collected and furnished by concerned Constituents (STU‟s) as per the
stipulated formats. Further, it may please be noted that data collection & modeling of all
varieties of Generators (Coal/ Gas/ Hydro/ Liquid Fuel/ CPP/ Cogen/ etc.) at 132/ 110/ 66
kV voltage level will be taken up by PRDC.
SRPC noted the above.
31 COMPLIANCE STATUS OF NEW PROTECTION AUDIT
RECOMMENDATIONS
31.1 As part of GSC (Task-II) under Package-A, protection audit check of 15 stations was
carried out by M/s Tractebel Engineering (TE) in Southern Region during the period,
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 86
December, 2015– July, 2016, when certain recommendations were also given for each of
these stations for compliance.
31.2 Subsequently, protection audit of various stations in SR is also being regularly conducted
by SRPC teams in line with CERC Order dated 27.04.2015 in respect of APTRANSCO
Petition No.95/MP/2015 dated 09.04.2015. So far, protection audit of 9 stations were
carried out during the period December, 2016 – February, 2018, when certain
recommendations were also given for each of these stations for compliance. Details of the
stations audited during the period September 2017 – February 2018 are given below for
kind reference:
Status of implementation of the remarks given for all above stations was reviewed in the
71st Meeting of PCSC held on 31.01.2018. It was noted that while majority of the remarks
had already been attended, specific time-frame for complying with pending remarks was not
provided. Accordingly, the following was agreed:
W.r.t. those pending remarks where no procurement action is involved, concerned
Constituents would take necessary steps to attend & complete the same by 15.03.2018.
W.r.t. balance pending remarks, concerned Constituents would take measures to attend
and complete the same by June, 2018.
Remarks which require longer time-frame than June, 2018 would be given target
timeline along with suitable course of action to accomplish the same.
TCC deliberations
APTRANSCO, TSGENCO, TSTRANSCO, KPCL, KPTCL, KSEBL, TANTRANSCO,
Puducherry ED,NTPC (RSTPS), NPCIL (KGS), NLCIL, PGCIL (SR-I) & PGCIL
(SR-II) were requested to take suitable action to comply with the pending remarks.
SRPC noted the above.
32 AUTO-RECLOSURE IMPLEMENTATION ON ALL 220 KV & ABOVE
TRANSMISSION LINES OF SOUTHERN REGION
32.1 It is common knowledge that majority of the faults that occur on transmission lines are of
transient nature; hence provision of Auto-Reclosure certainly helps not only in preventing
forced outage of the subject transmission line, but also in averting cascade trippings, in some
cases, of adjacent transmission lines due to consequent over-loading.
32.2 Provision for Auto-Reclosure is also mandated by Regulation 43 (4) (c) of CEA Technical
Sl. No. Name of the Station
Audited
Period of Protection
Audit
Composition of Audit
Team
1 220 kV Sharavathy
Generating Station of KPCL
30-31 October, 2017 SRPC, SRLDC & KSEBL
2 Both sides of 400/ 220 kV
Kozhikode SS of PGCIL
(SR-II)
21-22 December, 2017 SRPC, SRLDC, KPTCL &
KSEBL
3 Both sides of 765/ 400 kV
Maheshwaram (GIS) SS of
PGCIL (SR-I)
8-9 February, 2018 SRPC, SRLDC &
TSTRANSCO
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 87
Standards for Construction of Electrical Plants and Electric Lines, 2010, which has force of
law. Therefore, it is in the interest of grid security that all Constituents implement auto-
reclosure feature on all 220 kV & above transmission lines in their respective control areas.
Any exceptions to this needed to be properly justified.
32.3 In this connection, status of A/R implementation by SR-Constituents on their 220 kV &
above transmission lines in SR-grid and the action plan proposed for implementing A/R
where it is presently not in service was reviewed in the 71st Meeting of PCSC held on
31.01.2018. The details are given at Annexure-LXIX.
32.4 From the details furnished by various Constituents, it is noted that the main issues in
implementing A/R are the adopted conservative protection philosophies, lack of proper PLCC
communication, and breakers‟ suitability/ supportability. Hence, it is intimated that if there
are no issues w.r.t. carrier communication and breakers’ supportability, concerned
Constituents shall make efforts to implement A/R immediately in their respective networks.
Where communication & breaker related issues stand in the way of implementing A/R,
concerned Constituents shall take steps to address them appropriately on priority basis, and
implement A/R in their respective networks in a phased manner at the earliest.
TCC deliberations
All concerned Constituents [APGENCO (Hydro), APGENCO (Thermal), APTRANSCO,
TSGENCO (Thermal), TSGENCO (Hydro), TSTRANSCO, KPCL, KPTCL, KSEBL,
TANGEDCO, TANTRANSCO, NPCIL (KKNPP), NPCIL (MAPS), NLCIL, UPCL &
JSWEL] were therefore requested to kindly take action accordingly to implement A/R on
their lines as per the committed timelines.
SRPC noted the above.
33 PATROLLING / MAINTENANCE OF CRITICAL LINES AND SUBSTATIONS
33.1 Insulator tracking had been observed in Transmission lines and Substations located in the
coastal and polluted areas. SRPC vide letter dated 05th
May 2016 had communicated to
the concerned in this regard. Transmission Lines and Substations in the most vulnerable
terrain, coastal and polluted areas were to be categorized for monitoring to ensure that
Patrolling and Maintenance is being carried out as per Patrolling guidelines.
33.2 Concerned entities need to kindly initiate/continue necessary steps to ensure that
Patrolling and Maintenance is carried out regularly as per the Patrolling Guidelines.
33.3 SRPC noted the above.
34 COMPLIANCE OF ORDER OF HON’BLE CERC IN PETITION NO. 420/MP/2014
– IN RESPECT OF LVRT AND OTHER PROVISIONS OF CEA/CERC
REGULATIONS
34.1 Four Meetings had been conducted so far in compliance of Order of Hon‟ble CERC
(Petition No.420/MP/2014) in respect of LVRT and other provisions of CEA/CERC
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 88
Regulations. Hon‟ble Commission had specified time lines for a number of actionable
points for various entities.
34.2 Quarterly reports of the SR constituents jointly validated by SRLDC/SRPC Secretariat
were being communicated to Hon‟ble CERC with regard to monitoring of the installation
and performance of LVRT installed on existing WTGs as per the directives of Hon‟ble
CERC.
34.3 CEA had issued draft second amendment in CEA (Technical Standards for connectivity
to the Grid) Regulations. The final notification is awaited.
34.4 The following had been noted in earlier Meetings:
New wind and solar units need to comply with LVRT/HVRT provisions and
STU/SLDC was to ensure necessary compliance. Required mechanism needs to be in
place for this purpose. SLDCs were requested to approve connectivity to new
generators only on confirmation of availability of LVRT feature and other
CEA/CERC requirements. Monthly report of compliance needs to be furnished for
new wind/solar generators added to the grid.
SRLDC had pointed out that PMU at Pooling station was required to assess LVRT
performance.
SRLDC had requested that SLDCs may kindly prepare a geographic picture of the
Wind/Solar generators and extend it to SRLDC through ICCP. Later it can be
integrated to Regional Picture. In the REMC project extension of data was to be
carried out by states and action now would make it easier subsequently.
34.5 The 4th
meeting on LVRT / RE issues was held on 25.10.2017 (Minutes available on
SRPC website). Number of actionable points had been finalized in the meeting. SRLDC
vide letter dated 29.11.2017 (Annexure-LXX) had requested the entities to take necessary
action and resolve the issues within the time line mentioned. Following issues were
highlighted:
Submission of WTG data by all states as per the format circulated by SRPC / SRLDC
within one week.
Inclusion of suitable clause in the bidding documents (Solar) to ensure LVRT
compliance and provide details of NITs issued after the date of CERC Order.
Identification of optimal location for installing PMUs for LVRT analysis purposes.
Conducting capacity building workshop regarding forecasting and scheduling of RE.
STUs were requested to study the line loading in the systems for M-1 compliance and
submit report to CEA.
Identify and implement „Contingency Demand Disconnection Scheme‟ for locations
having large chunk of RE generation to the tune of 1000 MW and above.
All states were requested to analyze Solar generation ramp-up / ramp down based on
the capacity and identify the measures for compensating the same.
States were requested to take up the issue of PPA provision related to MVAR
interchange with respective SERCs for modifying the same to mitigate high voltage
scenario in the grid.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 89
34.6 The following had been noted in the TCC Meeting:
SRLDC & SRPC Secretariat had expressed concern that the requisite information / data
was awaited from most of the entities.
TCC had noted the above and suggested that necessary information as requested by
SRLDC vide letter dated 29.11.2017 be furnished at the earliest.
34.7 SRPC noted the above.
35 REVIEW MEETING ON COMPLIANCE OF PCSC RECOMMENDATIONS
35.1 Monthly Meetings of PCSC are being conducted to discuss from among other things, the
previous month‟s trippings with a view to identify their root cause and scrutinize the
correctness of operation of protection systems put in place by the concerned Constituents.
In the process, appropriate measures required to be taken for system improvement are
also being suggested/ recommended for compliance by concerned Constituents.
35.2 These PCSC recommendations, which are yet to be complied with, are being circulated
regularly vide Agenda & Minutes of PCSC meetings. However, in view of delay in
complying with them, a Review Meeting was also held on 18 – 19 December, 2017 at SRPC
Secretariat, Bengaluru to ascertain their current status of implementation by various
Constituents. Based on these deliberations held, the detailed status of pending
implementation of PCSC recommendations had been compiled and circulated to all SR-
Constituents vide SRPC letter dated 03rd
January 2018. It had been requested that concerned
Utilities take concrete and definite action in complying with the pending PCSC
recommendations.
35.3 Further, the following specific issues were also highlighted for necessary action by
respective Constituents:
Implementation of Line Differential Protection (as both Main-I & Main-II) in Nellore
Complex & Simhadri Complex:
Nellore Complex Constituents responsible for
LDP implementation
Agreed Time-line for LDP
implementation
Line Differential Protection
(LDP) to be implemented on
all 400 kV lines (< 50 km)
PGCIL (SR-I), TPCIL & SGPL March, 2018
APGENCO & APTRANSCO April, 2018
MEPL & SEL As and when their financial
healthiness improves
Simhadri Complex Constituents responsible for
LDP implementation
Agreed Time-line for
LDP implementation
Line Differential Protection
to be implemented in
Simhadri Complex on all
400 kV lines inter-
connecting Gajuwaka SS,
Kalpaka SS, Simhadri STPP
and Hinduja TPS
PGCIL (SR-I) & NTPC
March, 2018
APTRANSCO & HNPCL April, 2018
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 90
Implementation of Auto-Reclosure (A/R) on all 220 kV & above transmission lines:
Detailed logics for implementing A/R had been finalized in various PCSC meetings. It
was requested to kindly ensure that A/R is implemented on all 220 kV & above
transmission lines as per agreed logics at the earliest.
KPCL specific Issues:
It was noted that to comply with various PCSC recommendation, a DPR covering stations
such as Kadra, Kodasalli, Gersoppa and Raichur TPS for providing (i) double-bus
operation, (ii) numerical bus-bar protection, (iii) numerical relays for Generator
Transformers (GT‟s) and left-out transmission lines, and (iv) new breakers & isolators has
been prepared and is under approval stage from KPCL Management. It was also noted
that these works are proposed to be executed with funding from PSDF in a time-frame of
two-years.
Since providing of above had been pending for a couple of years, and are important from
protection perspective, KPCL was reminded of the urgency of the works, and requested to
take concrete action for early implementation.
KPTCL specific Issues:
Attending protection works at 220/ 110 kV Ambewadi SS: Ambewadi substation of
KPTCL is an inter-regional substation located on the north-western periphery of
Karnataka. The criticality of the substation can be gauged from the fact that not only does
it form an important outlet for evacuation of power from 220 kV Nagjheri PH, but also
constitutes the vital link in supplying power to the tune of (100 MW) to the state of Goa
located in western region. Given its significance, this substation was audited by SRPC
team way back in 2012, which recommended certain actionable measures covering
several protection aspects including reviewing earthing of all equipments for
implementation. Similarly, there was an internal-audit of the substation conducted by
KPTCL in April, 2014 with regard to strengthening of earth-mat. Then in April, 2015, a
field visit of the substation was undertaken by CEA team to ascertain the problems in the
transmission lines feeding Goa from Karnataka in Southern Region, which gave certain
protection-specific recommendations to be implemented at Ambewadi S/S to improve
export capacity of 220 kV Ambewadi - Ponda lines. Apart from these, there are also
recommendations specific to Ambewadi SS given by the Protection Coordination
Sub-Committee (PCSC) of SRPC w.r.t. providing bus-bar protection, LBB protection,
double-bus operation, and auto-reclosure on all lines emanating from Ambewadi.
In this regard, status of protection audit works and implementation of PCSC
recommendations was reviewed in the Meeting when KPTCL informed the following:
R&M of Ambewadi Substation was awarded by KPTCL prior to the protection Audit. So,
additional works which have to be taken up for complying with protection audit
recommendations like providing M-II for 220kV lines, GPS time synchronisation etc
were added to the scope of R&U while preparing the DPR for the project . Later, due to
poor response of M/s ERL, the R&M was short-closed by CEE, TZ, Bagalakot.
Considering the importance of the substation, it was planned to include the left out
works of R&M to the extended scope of R&U project. But considering the huge variation
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 91
and its commercial implications, management disallowed the additional works proposed
at Ambewadi and allowed only the original DWA Scope of work under R&U. Due to the
circumstances mentioned above, none of the protection audit works could be executed at
Ambewadi.
A site Meeting was planned during December, 2017 to discuss about further plan of
action for attending SRPC recommendations pertaining to the Substation.
Subsequently, KPTCL vide their mail dated 09.02.2018 intimated that CEE, RT and R&D
had visited Ambewadi S/S and conducted a site Meeting with CEE, TZ, Bagalakot and
other officials concerned on 11.01.2018 to discuss about further course of action. During
that Meeting majority of the Officers present opined that new bays can be created in the
available future bays in the station instead of spending time and money on up-gradation
works in the existing bays in service, due to the following reasons:
a) Existing 220 kV station structures are in deteriorated condition and require urgent
replacement.
b) To execute R&M works envisaged earlier lot of shut downs are required which are
difficult to avail considering inter-state connectivity with the State of Goa and
connectivity to Generating Stations.
c) Execution of R&M works consumes lot of time owing to both Line clear and
safety precautions that are required to be taken during LC works. Most of the turn
key contractors are not prepared to take up such works which involves risk.
d) Due to the above reasons, the responses from bidders for R&M works are
generally poor owing to very nature of the work which is primarily that of
repairing the existing system.
e) Cost involved in putting up a new substation may not be much as existing Power
transformers can be utilized in the very same substation. And nevertheless, the
time gained in putting up a new substation without causing any interruptions either
to Generation or load vis-à-vis the time lost and interruptions caused in carrying
out R&M works would offset the extra expenditure which may be incurred. The
other released materials can be utilized elsewhere wherever required.
In view of the above advantages, proposal for a new 220 KV substation either with
Hybrid or GIS considering space availability for the switch yard, reorientation of lines
and the scheme to be adopted for the switchyard is placed before the management for
consideration and approval.
On this, SRPC stated that setting up new 220 kV GIS/ Hybrid Substation in the available
space at Ambewadi constitutes a long-term solution involving an incubation time of about
2 to 3 years; whereas attending protection audit remarks is an immediate requirement
pending from 2012 (time-line given by Hon‟ble CREC for the same was 31.05.2017).
Further certain works like earth-mat strengthening are needed to be taken up urgently
irrespective of whether their proposal for new station gets nod from their management or
not. As such, KPTCL was requested to attend to pending protection audit remarks on
priority basis without linking them with their new station proposal. 35.4 SRPC noted the above and suggested the concerned entities to close the pending
points/issues.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 92
36 COMMERCIAL COMMITTEE ISSUES
36.1 Following issues were brought to the kind attention of TCC/ SRPC:
Outstanding payments to DSM pool account as on 15-02-2018 as interest payable
due to delayed weekly charges
Sl.
No. Beneficiary Interest payable (Rs)
SRPC
account issue
date
1 AP
16660 08-09-2017
2 7458 10-10-2017
3 Telangana 6973 15-11-2017
4 CEPL 9156 09-01-2018
5 KKNPP* 1725 08-07-2016
6 MEL
3654 13-12-2017
7 9384 13-12-2017
8 SGPL 13632 09-01-2018
* KKNPP payment is due since July, 2016 and KKNPP is not a participant in the DSM pool now
(after COD of Unit 2).
Delay in SEM data transfer
CC Forum had been continuously requesting SR constituents to furnish SEM data
in time to SRLDC, and impressed upon all concerned the effect of the delay/non
availability of data on the accounting and possible losses. There were instances of
notable delay or non-receipt of SEM data as illustrated below for the period from
23.07.17 to 08.10.17:
Andhra Pradesh No of
Instances
Karnataka No of
Instances
AP Carbides 12 Bellary Pooling Station 8
Brahmanakotkar 12 Kadra 12
Chillalallu 12 Raichur 10
Chittoor 12
Kurnool 12 Kerala
Lower Sileru 12 Manjeswaram 6
Piduguralla 12
Ragulapadu 12 Puducherry
Tallappally 12 Villianur 12
Tangeda 12
Upper Sileru 12 Tamil Nadu
Uravakonda 12 Alamathy 12
VTPS 12 Gummidipundi 12
Kamavarapukota 12 NCTPS 12
STCMS 12
Hosur-TNEB 10
Karamadai 8
ISGS
MAPS 12
BHAVINI 12
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 93
Status of Start-up power drawl, Infirm injection and CoD Declaration
Start Up Power
Sl.No Generator Startup power granted
From To
Nil
Infirm Power
Sl.No Generator Infirm
Injection
started from
6 month period
would end by
Extension
granted by
CERC
1 Kudgi U-3 22-08-16 21-02-18 NA
(Advance action may be taken in the likelihood of delay in declaring CoD beyond
6 months)
PSDF Transfer
Status of fund transfer from SR to PSDF as on 21.11.17 is as given below:
(In Rs. Crores)
UI/DSM A/c.
(Including
capping A/c.)
Reactive
A/c.
e-bidding
charges
Congestio
n Amount
Grand Total
Total (Up to
May'17) 1369.10596 3.7940429 561.584595 2.41198 1936.89658
Aug'17 50.00 0 0 0 50.00
Total (Upto
Sep‟17)
1419.10596 3.7940429 561.584595 2.41198 1986.89658
No amount is being transferred to PSDF from DSM pool account on regular basis
in order to keep sufficient surplus funds to meet RRAS deficit in pool accounts of
all RLDCs. An amount of Rs 15.8605 Crore was transferred to NRLDC deviation
pool account on 04.10.2017.
Transmission Charges pertaining to Kudgi STPS
In the 36th
Meeting of CCM, SRPC Secretariat had informed that the RTA accounts
for the months of August and September 2017 was initially issued indicating the
transmission charges in respect of NTPC Kudgi payable by beneficiaries and
subsequently the RTA was revised indicating the Kudgi transmission charges
payable by NTPC (Generator) as per Sharing Regulations.
CCM had opined that Revised RTA is in order and NTPC was liable to pay the
transmission charges as shown in RTA. NTPC had subsequently approached
Hon‟ble CERC with a Petition in this regard.
It was noted that with installed capacity of 2,400 MW and Normative Auxiliary
Consumption of 5.75 %, the ex-bus capability of Kudgi STPS works out to only
2,262 MW. Accordingly the LTA quantum needed to be revised. NTPC (LTA
applicant) had been requested to kindly approach CTU for revising the LTA
quantum by relinquishing excess LTA quantum of 130.49 MW. SRPC vide letter
dated 03.01.2018 had taken up this issue with NTPC. NTPC vide letter dated
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 94
02.01.2018 (Annexure-LXXI) had taken up the issue of LTA revision to 2,262
MW (against granted LTA of 2392.49 MW) with COO, CTU.
TCC deliberations
NTPC had stated that the relinquishment/revision of LTA for Kudgi STPS was to be
applied by the beneficiaries (NTPC letter dated 07.02.2018 is at Annexure-
LXXII).
Beneficiaries had opined that LTA application was furnished by NTPC and hence
relinquishment application also needed to be furnished by NTPC. NTPC stated that
in the PPA, it is clearly specified that NTPC would be applying LTA on behalf of
the beneficiaries.
CTU had stated that request for relinquishment was required either from the
beneficiaries or from NTPC for further processing at their end. It was suggested
that it was in the interest of the applicant (beneficiaries / NTPC) to request for
relinquishment at the earliest since billing was being carried out as per LTA
operationalized. Relinquishment charges would be as per the Order in Petition
No.92/MP as and when it is passed.
Special Meeting would be held to sort out the relinquishment of LTA issue. CTU
was requested to kindly ensure its participation in that Meeting.
SRPC noted the above.
Drawal from ISTS by Generators not scheduled/getting dispatched and not
having ISTS access
SRPC Secretariat had informed the forum that some of the generators, connected to
ISTS, in Southern Region do not get dispatch schedule for long time. Some of the
generators do not have ISTS access also. However, such generators draw power
from the grid almost continuously.
Such drawal are accounted in the DSM, which may need to be reviewed. SRLDC
had been requested to kindly seek the opinion of NLDC in this regard.
Methodology procedure for computing actual drawal / injection
Methodology / procedure for computing actual drawal / injection of entities in case
of non-availability of main / check / standby meter data was discussed in the 7th
Meeting of NPC held on 08.09.2017 (refer Annexure-XXVI). After deliberations, it
had been agreed that the actual loss on the line or ICT computed based on the
previous week data may be used for loss application (in case of non-availability of
previous week data nearest week available data may be used). The same should be
implemented from first week of December 2017). It was decided that NPC
Secretariat may develop a framework for replacement of meters after taking inputs
from RPCs on the practice being followed by the utilities.
Implementation of 5 minutes scheduling, metering, accounting and settlement
Implementation of 5 minutes scheduling, metering, accounting and settlement was
discussed in the 7th
Meeting of NPC held on 08.09.2017 (refer Annexure-XXVI).
After deliberations, NPC had noted that RPCs if so desire, may discuss the issue at
their level. It was noted that Regulators had constituted a sub-group with adequate
representation from all stake holders and the ToR includes five minutes scheduling,
metering, accounting and settlement.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 95
Simhadri Stage-1 LTA-arriving the slab rate for Telangana
SRPC vide letter dated 02.01.2018 (Annexure-LXXIII) had taken up the issue of
inclusion of Simhadri Stage-1 LTA in the POC slab rate with NLDC.
Removal of 18.5 MW of untied power of UPCL from RTA
In line with Hon‟ble CERC Order dated 23.08.2017 in respect of Petition No
242/MP/2016, all the RTAs stand revised by removing the quantum of 18.5 MW of
untied power pertaining to UPCL (SRPC letter dated 04.01.2018 in this regard is
enclosed as Annexure-LXXIV.
Pending payments between WR& SR Constituents as on 23.10.2017 are as follows:
State Receivable from Payable to
Entity Rs Entity Rs
Andhra Pradesh
/ Telangana
MPPMCL 1,21,76,270
*
MPPMCL Nil
Karnataka MPPMCL 13,27,208 GUVNL Nil
Kerala MPPMCL 1,21,47,260
CSPDCL 7,05,279
Tamil Nadu MPPMCL 1,17,17,268 CSPDCL 92,77,878
* In the Meeting of SR-WR held on 09.11.2016 at WRPC, Mumbai, MPPMCL had
informed that it had to receive payment from APTRANSCO and the details would
be shared with APTRANSCO/SRPC Secretariat.
TANTRANSCO vide letter dated 28.12.2017 (Annexure-LXXV) had taken up the
issue with MS, WRPC requesting that necessary arrangement may please be taken for
TNEB to receive the amount of Rs. 1,17,17,268/- from MPPCL and the amount of Rs.
29,80,994/- from PGCIL so as to close the long pending issues between SR & WR
constituents in total which in turn TANGEDCO will settle to Chattisgarh also.
Payable amount by PGCIL (WRTS / SRTS) to SR Constituents (as on 23.10.2017)
State/UT Total
Amount
to be
received
in Rs
Received
as on
01.12.2014
in Rs
Paid by
SRTS II
on
01.04.2016
in Rs
Paid by
SRTS II
on
01.03.2017
in Rs
Balance to
be
received
in Rs
Andhra Pradesh
& Telangana 47,05,447 3,69,848 10,16,847 3,48,203 29,70,549
Karnataka 49,79,733 3,91,407 10,76,120 3,68,500 31,43,706
Kerala 27,58,402 2,16,811 5,96,091 2,04,122 17,41,378
Tamil Nadu 47,21,994 3,71,149 10,20,423 3,49,428 29,80,994
Puducherry 9,24,035 72,629 1,99,684 68,379 5,83,343
Total 1,80,89,611 14,21,844 39,09,165 13,38,632 1,14,19,970
In the 36th
CCM, PGCIL had informed that Maharashtra is likely to release the
amount to PGCIL (apprx. Rs. 63 lakh) and would be in a position to reimburse the
amount by 15.12.2017.
SR constituents had been requested to take up pending payment issue with
concerned WR utility directly, with a copy to SRPC / WRPC Secretariat.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 96
TANTRANCO vide letter dated 28.12.2017 (Annexure-LXXVI) had requested PCKL
to clear the dues of Rs. 26,49,88,513/- as per the decision taken in 123rd
SREB
Meeting. In the 36th
CCM held on 24.11.2017, KPTCL/PCKL had informed that
needful would be done at the earliest.
KPTCL informed that PCKL would furnish update in the SRPC Meeting.
36.2 SRPC requested the concerned entities to take necessary action to close the issues.
36.3 MD, PCKL assured that the payment issues with TANTRANSCO would be resolved
before the next SRPC Meeting.
37 AUGMENTATION OF TALCHER-II TRANSMISSION SYSTEM
37.1 Hon‟ble Commission in its Order dated 05.11.2015 in respect of Petition No.
14/SM/2015, in the matter of „Notice under Section 19 of the Electricity Act, 2003 for
revocation of the inter-State transmission licence granted to Talcher II Transmission
Company Ltd.‟ had passed the Order :
„13. In exercise of our power conferred under Section 19 (3) of the Act and Regulation
20 of the Transmission Licence Regulations notice is given to the licensee to show
cause within three months from the date of this order as to why the transmission
licence granted for the transmission project should not be revoked in terms of the
provisions of Section 19 of the Electricity Act and Transmission Service Regulation as
quoted above. If no response is received within three months from the date of issue of
the order, the licence shall be deemed to have been revoked.‟
37.2 In earlier Meetings, the following had been deliberated:
TANGEDCO had informed that the Petition was scheduled for hearing before
APTEL on 22nd
August 2017. In their affidavit, they had made it clear that this
system was no more required. As per their studies, considering Jharsuguda-Angul
system in ER, 765 kV & 400 kV transmission system commissioned/under
execution/planned in SR/ER there were no constraints envisaged for evacuation of
Talcher Stage-II power in ER & SR during outage of single pole of HVDC.
37.3 Subsequently PCKL vide letter dated 07.02.2018 (Annexure-LXXVII) had invited
reference on agenda on Augmentation of Talcher Stage II Transmission system. PCKL
had requested TANGEDCO that system studies be conducted by CEA/SRLDC to
assess requirement of Talcher Stage II Augmentation System in the present scenario. It
had been requested to re-examine the requirement of Talcher Stage II Augmentation
System in the present scenario.
37.4 The following had been noted in the TCC Meeting:
PCKL had stated that study by CEA or SRLDC may be required.
It was noted that during recent shutdown of HVDC pole, there was no curtailment
envisaged during single pole shutdown. In this context whether study is required or
not needs to be deliberated.
CE (NPC), CEA had stated that the Talcher augmentation was to take care of the
outage of HVDC pole and to ensure that Talcher-II power is diverted through
Gazuwaka HVDC back to back. Presently, the Gazuwaka back to back is being
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 97
utilized only upto 650 MW and strengthening from Talcher-Behrampur-Gazuwaka
may be required. This system was also to load the Gazuwaka back to back to 1,000
MW. ATC may increase by around 350 MW. CTU also endorsed these views of
CEA.
APTRANSCO, KSEBL, TANTRANSCO and TSTRANSCO had stated that the
system may not be required in the present conditions considering the upcoming
transmission elements/system. Earlier the SR was connected through HVDC only
while now it is connected through a number of 765 kV lines. Thus, usefulness has
to be examined keeping the present grid scenario. Earlier there was no option
during outage of Talcher-Kolar HVDC pole that the power be transmitted through
Gazuwaka back to back which was not the case now.
37.5 SRPC noted the above
38 GRID OPERATION
38.1 Salient Achievements
TS crossed 3,000 MW of installed capacity in Wind and Solar during November
2017 and the DSM limit was raised to 250 MW from 01.12.2017.
KKNPP Black Start Mock Drill exercise was successfully carried out on 31.10.2017
with cooperation from KKNPP, TANTRANSCO, TANGEDCO and SRLDC.
35 MW MoP allocation to Karnataka (Railways) from RGPPL was made operational
from 25.10.2017 in coordination with KPTCL, BESCOM and Railways.
KSEBL had implemented ADMS through distribution feeders ie through 11 kV
feeders. Earlier, the same was carried out through SCADA in which only 110 kV
level tripping was possible. A server would be computing the requirement and
feeders tripped automatically and the same will be displayed in the control room.
SRLDC commissioned the new Reporting and Scheduling Software.
First unit of Stage I and second unit of Stage II at Kaiga GS had completed 546 and
535 days continuous running as on 10.11.2017.
MAPS had placed on record the appreciation for the cooperation extended by
TANTRANSCO in patrolling the evacuation lines and in resolving other grid
connected issues.
MVAR Capability Test in respect of BTPS Unit I (KPCL) was carried out on
09.09.2017 with cooperation / participation from KPCL, KPTCL, SRLDC and
SRPC.
38.2 Grid Events/ Highlights during August 2017
AUFR, df/dt Joint Validation with states completed for Kerala and Puducherry. With
this, Joint Validation was completed for all the states.
PTR-2 at 220/11 kV LIS SS Machumarri in Kurnool district of 63 MVA Capacity
was commissioned on 01.08.2017 by APTRANSCO.
PTR-3 at 220/11 kV LIS SS Machumarri in Kurnool district of 63 MVA Capacity
was commissioned on 17.08.2017 by APTRANSCO.
220/132 kV SS Narasaraopet in Guntur Dist of existing 2 x 31.5 MVA was
commissioned on 04.08.2017 with augmented capacity of 3 x 31.5 MVA by
APTRANSCO.
220 kV D/C line from 400/200 kV SS Maheshwaram to Fabcity I & II of 47 Ckm
was commissioned on 20.08.2017 by TSTRANSCO.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 98
220 kV D/C line from 400 kV SS Veltoor to 220kV Switching Station Thimmajipet I
& II of 45 Ckm was commissioned on 24.08.2017 by TSTRANSCO.
38.3 Grid Highlights during September 2017
Black Start Restoration Workshop for Karnataka Completed on 08th
September 2017
at BTPS.
Black Start Restoration Workshop for Telangana Completed on 22nd
September 2017
at KTPS.
MVAR Capability Testing of BTPS completed on 09th
September 2017
RGMO Meeting completed for TN on 25th
September 2017 and CGS on 27th
September 2017.
SR I, Power grid vide letter dated 26.09.2017 had informed that the following assets
under transmission system associated with “Eastern Region strengthening Scheme-
IX” have been put under Commercial Operation w.e.f 00:00 hrs of 27th
September
2017:
400kV, 1 x 125 MVAR, Bus Reactor at Gazuwaka (East bus) along with
associated bays and equipments.
SR I, Power Grid vide letter dated 20.10.2017 had informed that the following
transmission system associated with “Provision of line bays for the scheme –
Connectivity lines for Maheshwaram (Hyderabad) 765/400 kV Pooling Station” have
been put under Commercial Operation w.e.f 00:00 hrs of 21st October 2017:
2 Nos. of 400kV GIS line bays at Nizamabad (PG) for termination of
Nizamabad – Yeddumailaram (Shankarpalli) 400kV D/C line.
4.2 MW and 30.85 MW of Wind mills (Private) were added in AP and TN
respectively. 129.5 MW of Solar (Private) was added in TS.
Mock test on SPS of Talcher-Kolar poles were carried out on 27.09.2017.
38.4 Grid Highlights during October 2017
Black Start Restoration Workshop for Tamil Nadu Completed on 24th
October 2017
at NCTPS Stage - I.
Black Start Restoration Workshop for Andhra Pradesh Completed on 27th
October
2017 at VTPS
KKNPP Mock drill exercise conducted on 31st October 2017.
0.225 MW of Wind (Private) was added in TN. 59.996 MW and 235.896 MW of
Solar (Private) were added in AP and TS respectively.
38.5 Grid Highlights during November 2017
MVAR testing at NTPL completed on 01.12.2017
Kerala Black Start Restoration Workshop conducted on 17th
November 2017 at
Thrissur Substation, with participation of officers through VC from 9 locations.
Srisailam Left Bank pump mode operation started from 9th
November 2017.
220 kV D/C line from Palmaneru to Madanapalli in Chittoor district of 116 Ckm was
commissioned on 10.11.2017 by APTRANSCO.
220kV 2nd
circuit from Bommur to LILO point and LILO to Bavojipeta (Korukonda)
Switching Station in East Godavari District of 34 Ckm was commissioned on
17.11.2017 by APTRANSCO.
220 kV D/C line from Bavojipeta to Purushothapatnam in East Godavari district of
21 Ckm was commissioned on 17.11.2017 by APTRANSCO
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 99
220 kV D/C line from Bavojipeta to Ramavaram in East Godavari district of 29 Ckm
was commissioned on 17.11.2017 by APTRANSCO
220 kV Switching Station at Bavojipeta (Verukonda) in East Godavari Dist was
commissioned on 17.11.2017 by APTRANSCO
220/132 kV SS Kakinada in East Godavari Dist of Existing 3 x 100 MVA was
commissioned on 26.11.2017 by APTRANSCO with augmented capacity of 1 x 60 +
2 x 100 MVA.
LILO of 220 kV Regumangadda- Gudipalligattu I to 220/11 kV SS Yelluru Water
Grid Substation in Mehaboobnagar district of 7 Ckm was commissioned on
03.11.2017 by TSTRANSCO.
PTRs-2 220/11 kV SS Yelluru Water Grid Substation in Mehaboobnagar district of
capacity 50 MVA was commissioned on 03.11.2017 by TSTRANSCO.
400/220 kV Maheshwaram in existing 500 MVA was commissioned on 13.11.2017
by TSTRANSCO with augmented capacity of 500 MVA.
400/220 kV Narsapur in existing 630 MVA was commissioned on 24.11.2017 by
TSTRANSCO with augmented capacity of 315 MVA.
24 MW, 13.975 MW and 4.5 MW of Wind (Private) were added in AP, Ker and TN
respectively. 22 MW and 345.896 MW of Solar (Private) were added in AP and TS.
38.6 Grid Highlights during December 2017
75 MW power from WR ISGS to Telangana allocated from 30th
December 2017
Kudgi unit II (800 MW) Commissioned on 31st December 2017 as per NTPC.
220/132 kV SS at Madanapalli I & II in Chittoor district with 200 (MVA) capacity
was commissioned on 11.12.2017 by APTRANSCO.
220 kV SS Parawada in Visakhapatnam Dist of existing 2 x 100 MVA was
commissioned on 11.12.2017 by APTRANSCO with augmented capacity of 3 x 100
MVA.
220 kV SS Undi in West Godavari Dist of existing 3 x 100 MVA was commissioned
on 12.12.2017 by APTRANSCO with augmented capacity of 1 x 160 + 2 x 100
MVA.
LILO of 220 kV Yelluru - Gudipalligattu to 220/11kV SS Gouridevipally I in
Mehaboobnagar district of 4 Ckm was commissioned on 08.12.2017 by
TSTRANSCO.
220/11 kV Gouridevipally I SS at Mehaboobnagar district with 50 (MVA) capacity
was commissioned on 08.12.2017 by TSTRANSCO.
220 kV D/C line with Multi Circuit Towers from proposed 400/132 kV SS Nirmal I
& II (Test charged) of 9 Ckm was commissioned on 29.12.2017 by TSTRANSCO.
400 kV Quad Moose /DC line from 400kV Julurupadu I&II SS TO 400 kV Suryapet
SS of 110 Ckm was commissioned on 23.12.2017 by TSTRANSCO.
400/220 kV Dindi SS in existing 1 x 315 MVA was commissioned on 20.12.2017 by
TSTRANSCO with augmented capacity of 2 x 315 MVA.
220/132/33kV SS Dichpally in existing 2 x 160 + 2 x 100 MVA was commissioned
on 07.12.2017 by TSTRANSCO with augmented capacity of 3 x 160 + 1 x 100
MVA.
220/132 SS Kamareddy in existing 2 x 100 MVA was commissioned on 16.12.2017
by TSTRANSCO with augmented capacity of 1 x 160 + 2 x 100 MVA.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 100
26 MW of Wind (Private) were added in AP. 2.006 MW and 133 MW of Solar
(Private) were added in AP and TS.
38.7 Grid Highlights during January 2018
For the first time, Nagarjuna pump operations had started. During 09.01.2018 to
01.02.2018, NSHES / TSGENCO Units 2 to 8 were tested successfully in pump
mode operation. During this season, only 3 units can be operated simultaneously due
to some constraints in suction side of the water conducting system.
“Black Start Restoration procedure of Southern Region 2018” document was
released by SRLDC on 31.01.2018.
KPTCL met maximum demand 10,347 MW till date on 12.01.2018.
Allocation of power from the unallocated power of coal based stations of NTPC for
bundling with solar power under National Solar Mission Phase II Batch II Tranche I
to Andhra Pradesh, Telangana and Karnataka was made. As on till date Telangana is
allocated 130 MW from WR and 50 MW from ER. AP is allocated 75 MW from
WR. Karnataka is allocated 250 MW from WR.
KSPDCL vide letter dated 30.01.2018 had informed that 1 x 150 MVA, 220/66 kV
transformer substation along with 4 nos. of 66 kV bays established by KSPDCL for
evacuation of solar power generation from 2,000 MW Pavagada solar park along
with 220 kV transmission line, 66 kV terminal bays with associated equipments,
communication system from sending end to receiving end, metering, telemetering
and protection system had been put under commercial operation from 22:30 hours of
29.01.2018.
220 kV line on Multi Circuit Towers for making LILO of both circuits of existing
220 kV Budidampadu – Warangal D/C line to proposed 220/132 kV SS
Mahabubabad I,II,III&IV (5.1 km x 4 = 20.4 Ckm) of 20.40 Ckm was commissioned
on 29.01.2018 by TSTRANSCO.
220/132 kV SS PTR I Mahabubabad in Warangal district with 100 (MVA) capacity
was commissioned on 29.01.2018 by TSTRANSCO.
5 MW of Wind (Private) were added in TN. 0.002 MW and 14 MW of Solar
(Private) were added in AP and TS. Bio Mass of 1.3 MW was added in AP.
38.8 Installation of Shunt Capacitors
Progress of installation of capacitors by the constituents during the year
2017-18 is furnished in the Table below:
(Figures in MVAR)
State Requirement
for 2017-18
Installed during the year
2017-18 up to Jan 2018
Andhra Pradesh 1625.2 277.4
Telangana 837.2 325.0
Karnataka 1633.7 186.6
Kerala 0 0
Tamil Nadu 100.8 19.2
Puducherry 26.4 0
38.9 Demand Variation (Peak Vs Off-peak)
Issue regarding large variation between minimum and maximum demands has been
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 101
under the consideration of TCC/SRPC. Issue is also being discussed in the monthly
Meetings of OCC. Following was observed with regard to the period from Aug 2017
to Nov 2017:
Description
Minimum to Maximum Demand Variation %
Andhra
Pradesh Telangana Karnataka Kerala
Tamil
Nadu Puducherry
Southern
Region
August 2017
Highest 28.46 33.40 31.28 43.15 36.38 57.80 28.64
Date (Day) 08.08.2017
(Tuesday)
19.08.2017
(Saturday)
28.08.2017
(Monday)
21.08.2017
(Monday)
21.08.2017
(Monday)
22.08.2017
(Tuesday)
31.08.2017
(Thursday)
Lowest 11.99 16.40 14.12 28.38 13.97 20.74 4.23
Date (Day) 17.08.2017
(Thursday)
05.08.2017
(Saturday)
02.08.2017
(Wednesday)
27.08.2017
(Sunday)
27.08.2017
(Sunday)
29.08.2017
(Tuesday)
10.08.2017
(Thursday)
Average 19.29 23.70 22.79 35.70 22.61 31.46 16.45
September 2017
Highest 27.42 30.18 38.07 51.20 37.80 51.22 30.99
Date (Day) 22.09.2017
(Friday)
25.09.2017
(Monday)
18.09.2017
(Monday)
18.09.2017
(Monday)
06.03.2017
(Monday)
29.09.2017
(Wednesday)
18.09.2017
(Monday)
Lowest 14.07 12.77 17.31 27.18 12.66 16.18 12.46
Date (Day) 30.09.2017
(Saturday)
06.09.2017
(Wednesday)
03.09.2017
(Sunday)
13.09.2017
(Wednesday)
10.09.2017
(Sunday)
17.09.2017
(Sunday)
03.09.2017
(Sunday)
Average 19.63 22.07 29.81 34.76 22.79 29.95 19.40
October 2017
Highest 30.72 47.45 45.93 39.78 36.09 43.31 32.64
Date (Day) 23.10.2017
(Monday)
20.10.2017
(Friday)
03.10.2017
(Tuesday)
03.10.2017
(Tuesday)
20.10.2017
(Friday)
19.10.2017
(Thursday)
31.10.2017
(Tuesday)
Lowest 12.27 12.19 16.59 29.61 16.38 22.43 13.79
Date (Day) 19.10.2017
(Thursday)
19.10.2017
(Thursday)
29.10.2017
(Sunday)
01.10.2017
(Sunday)
27.10.2017
(Friday)
08.10.2017
(Sunday)
29.10.2017
(Sunday)
Average 19.30 22.93 33.36 34.94 23.91 31.79 21.30
November 2017
Highest 36.73 30.51 27.38 40.02 41.30 48.12 26.18
Date (Day) 29.11.2017
(Wednesday)
13.11.2017
(Monday)
13.11.2017
(Monday)
22.11.2017
(Wednesday)
06.11.2017
(Monday)
06.11.2017
(Monday)
27.11.2017
(Monday)
Lowest 17.87 18.12 14.88 25.19 17.07 25.03 14.11
Date (Day) 06.11.2017
(Monday)
26.11.2017
(Sunday)
01.11.2017
(Wednesday)
19.11.2017
(Sunday)
19.11.2017
(Sunday)
21.11.2017
(Tuesday)
26.11.2017
(Sunday)
Average 25.01 24.06 22.55 34.83 29.21 35.25 19.97
December 2017
Highest 41.21 38.19 29.33 40.50 42.26 46.52 27.90
Date (Day) 25.12.2017
(Monday)
25.12.2017
(Monday)
04.12.2017
(Monday)
18.12.2017
(Monday)
04.12.2017
(Monday)
01.12.2017
(Friday)
04.12.2017
(Monday)
Lowest 31.66 24.86 20.01 30.13 21.79 26.48 17.23
Date (Day) 01.12.2017
(Friday)
09.12.2017
(Saturday)
17.12.2017
(Sunday)
24.12.2017
(Sunday)
31.12.2017
(Sunday)
10.12.2017
(Sunday)
10.12.2017
(Sunday)
Average 36.44 31.02 24.44 36.74 30.80 36.72 22.61
January 2018
Highest 44.09 39.88 27.51 41.23 36.75 49.38 30.19
Date (Day) 23.01.2018
(Tuesday)
10.01.2018
(Wednesday)
11.01.2018
(Thursday)
03.01.2018
(Wednesday)
16.01.2018
(Tuesday)
11.01.2018
(Wednesday)
08.01.2018
(Monday)
Lowest 36.56 30.66 19.73 29.11 23.08 26.01 21.29
Date (Day) 20.01.2018
(Saturday)
01.01.2018
(Monday)
17.01.2018
(Wednesday)
14.01.2018
(Sunday)
07.01.2018
(Sunday)
07.01.2018
(Sunday)
26.01.2018
(Friday)
Average 39.61 35.48 23.74 36.52 30.32 37.06 25.76
Note: Highest & lowest figures for the month have been computed based on the daily values.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 102
38.10 Frequency of Operation of Southern Grid
Frequency of operation of the Southern Grid for the period under review is furnished
below please:
Month
Percentage of time when frequency (Hz) was
Month
Avg.
freq.
Less
than
49.5
49.5
to
49.7
49.7
to
49.9
49.9
to
50.0
50.0
to
50.05
50.05
to
50.20
More
than
50.20
Within
IEGC
range
49.9 to
50.05
August 2017 0.00 0.03 10.79 47.50 28.80 12.88 0.01 76.30 49.99
September 2017 0.00 0.04 14.71 52.94 24.35 7.95 0.01 77.29 49.98
October 2017 0.00 0.02 16.99 52.31 23.01 7.67 0.00 75.31 49.97
November 2017 0.00 0.08 19.72 49.96 20.89 9.33 0.02 70.85 49.97
December 2017 0.00 0.00 13.14 45.82 27.40 13.57 0.07 73.22 49.98
January 2018 0.00 0.01 11.14 50.32 27.36 11.11 0.06 77.68 49.98
During the period under review, caution / violation messages (Annexure-LXXVIII)
were issued to the constituents by SRLDC. Matter regarding overdrawal at low
frequency by some of the constituents is being regularly deliberated in the OCC
forum. Utilities were requested to kindly adhere to the Regulations in this regard.
39 REIMBURSEMENT OF SRPC EXPENDITURE
39.1 Statement showing net amount payable by Member Utilities of SRPC for the year 2017 -
18, after adjustment of surplus/deficit for the previous period is furnished in Annexure-
LXXIX.
Members were kindly requested to ensure payment, wherever due.
39.2 Enhancement of contribution to the SRPC Meeting Fund
Increase in the Annual Subscription towards SRPC Subcommittee Meetings from Rs
75,000/- per annum to Rs.1,00,000 was proposed. The last increase had earlier been
approved in the 10th
SRPC Meeting held on 02.07.2009.
TCC had recommended for this enhancement.
SRPC approved the enhancement of Annual Subscription from Rs 75,000 to Rs 1,00,000
with effect from the financial year 2018 -19.
40 STATE-WISE ALLOCATION OF 540 MW POWER FROM RGPPL TO
RAILWAYS
40.1 Ministry of Power vide Order dated 17.03.2017 had allocated 540 MW of power from
Ratnagiri Gas and Power Private Limited (RGPPL) to Indian Railways. Allocation to SR
States (out of 540 MW) was as under:
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 103
State Nodal
Railway
Maximum load in MW after availability of corridor
between NEW Grid and SR*
Telangana SCR 50
Tamil Nadu SR 100
Karnataka SR 35
35 MW MoP allocation to Railways (Karnataka) from RGPPL was operational from
25.10.2017. In the OCC Meetings, TSTRANSCO and TANTRANSCO had been
requested to kindly take steps for operationalization of the allocation.
40.2 SRPC noted the above.
41 REPORT OF POLLUTION MAPPING OF SR BY CPRI
41.1 M/s CPRI had prepared the draft report along with pollution map of SR after completion
of six set of measurements spread over two years carried out by PGCIL & STU of SR.
PGCIL had forwarded the draft report to various STUs seeking comments/inputs on the
draft report. CPRI had presented the highlights of draft report of Pollution Mapping of SR
in the 138th
OCCM held on 11.12.2017 (pollution map of the states and SR is enclosed at
(Annexure-LXXX). All constituents had been kindly requested to make use of the
pollution mapping.
41.2 TCC suggested that the pollution map may be appropriately considered for future design
of transmission assets.
41.3 SRPC noted the above.
42 OPERATION OF HYDRO POWER PROJECTS IN PEAKING MODE
42.1 POSOCO‟s report on Operational Analysis for Optimization of Hydro Resources &
facilitating Renewable Integration in India had been discussed in detail in the 32nd
SRPC/31st TCC Meetings. Chairperson, SRPC had concluded, „It was almost unanimous
that the final decision on hydro optimization should be left to the states. As suggested by
CMD, KSEBL, state-wise analysis for hydro operation could be carried out by POSOCO
in coordination and close consultation with SLDCs‟. Chairperson, SRPC vide letter dated
23.08.2017 (Annexure-LXXXI) had also taken up the concerns of SR constituents with
Ministry of Power on the above subject.
42.2 In the OCC Meetings, SRLDC had informed that NLDC had desired to conduct Meeting
with KSEBL and KPTCL respectively on the subject. States had pointed out that:
It is States/LDC prerogative to plan their LGB, including hydro optimization and
support for national peak should not be insisted upon by NLDC.
States are utilizing their own resources in the most optimal manner and the issue has
been deliberated in detail in the 31st TCC / 32
nd SRPC Meetings.
During peak hours market price may be less, while during day time market price may
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 104
be more. States may generate higher hydro during day and conserve during evening
when price is less by opting for market. If NLDC/CEA could come up with a market
mechanism, the suggestion would be appreciated since State Peak and National Peak
may be at different periods.
After deliberations, SRLDC was requested to convey these views of SR constituents to
NLDC.
42.3 In the TCC Meeting the following had been noted:
NLDC had stated that there was further scope of optimization in hydro generation and
even in pump mode operation among the states.
Director (GM), CEA had informed that as per the report, around 800 MW of hydro
support for peaking may be available from SR hydro stations. The concerned were
requested to kindly look into this aspect.
States expressed that while performance assessment was based on installed capacity
only, there were a number of other factors / considerations / directives applicable for
hydro utilization/optimization. These comments had been extensively discussed in the
31st TCC / 32
nd SRPC and also communicated to NLDC.
It was noted that a Meeting between NLDC and States would be conducted within one
month on this matter.
42.4 SRPC noted the above.
43 DEFAULT IN PAYMENT OF OUTSTANDING DUES BY BENEFICIARIES
43.1 PGCIL vide letter dated 09.01.2018 (refer Annexure-XXXVII) had furnished details of
outstanding dues for more than 60 days as on 04.01.2018 in respect of defaulting
beneficiaries of POWERGRID. The dues as on 12.02.2018 are as under:
Rs. in Cr.
Sl No. DIC Total dues >60 Days dues
1 TANGEDCO 160.85
2 Karnataka (BESCOM) 79.04
3 Karnataka (GESCOM) 73.77 26.66
4 Karnataka (HESCOM) 94.31 24.69
5 Karnataka (CESC) 61.71 23.89
6 Jindal 24.24
7 CEPL 37.56
8 KSK Mahanadi 21.91 8.44
9 Others 10.18
43.2 In the TCC meeting, PGCIL had requested concerned utilities to kindly liquidate the
outstanding dues on priority.
43.3 SRPC requested the concerned entities to expedite the payments.
44 INCLUSION OF DRAWAL OF MAHE IN REA
44.1 Issue of inclusion of drawal of Mahe Region of UT of Puducherry in REA was under
deliberation in the SRPC/TCC/CCM meetings. In the 32nd
SRPC Meeting, the following
had been noted:
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 105
SE-I, PED informed that they were in final stage of settlement and hopefully they
would migrate to REA by next month.
CMD, KSEBL stated that there are some dues to be cleared and subject to that matter
would be considered. However, PED should take necessary action to settle the old
payment issues at an early date.
44.2 It had been agreed in the 36th
CCM to commence the Mahe drawal accounting in REA
from 4th
December, 2017. Puducherry vide letter dated 05.12.2017 (Annexure-LXXXII)
had informed that Mahe had been included in the UT of Puducherry drawal for REA and
other commercial computations.
44.3 SRPC noted the above.
45 UNREQUISTIONED SURPLUS (URS)
45.1 Hon‟ble CERC in Petition No. 16/SM/2015 in matter of Difficulty encountered in
implementation of the Commission order dated 5.10.2015 in Petition No. 310/MP/2014
regarding scheduling of unscheduled Surplus Power from the Inter-State Generating
Stations vide Order dated 17.10.2017 had passed the Order :
„As an interim measure, we had issued the following directions in partial
modification of our directions in the order dated 5.10.2015, pending final decision
on the issue: “Where both the generating station and its beneficiaries (surrendering
and requesting beneficiaries) give their standing consents in writing to RLDC that
the decision of the concerned RLDC will be binding on them with regard to
scheduling and dispatch of URS power, the concerned RLDC shall schedule such
URS power to the requesting beneficiaries in relative proportion to the quantum
requested by them. In other cases, RLDCs shall schedule URS power on the basis of
the consents submitted by the generating stations in terms of the order dated
5.10.2015.”
After issue of the interim directions as above, no difficulty with regard to scheduling
of URS power has been brought to the notice of the Commission. Therefore, we are
of the view that the directions in para 32 of the order dated 5.10.2015 and the
interim direction vide Record of Proceedings dated 5.1.2016 will help in smooth
scheduling of the URS power from ISGSs.
Accordingly, where both the generating station and its beneficiaries (surrendering
and requesting beneficiaries) give their standing consents in writing to RLDC to the
effect that the decision of the concerned RLDC will be binding on them with regard
to scheduling and dispatch of URS power, the concerned RLDC shall schedule such
URS power to the requesting beneficiaries in relative proportion to the quantum
requested by them.
………
In such cases, if the generator wishes to sell the regulated power as URS power or in
the market including power exchange, the consent of beneficiary whose share of
power is regulated will not be required.
……………
Regarding other questions we have perused the Operating Procedure of SRLDC
available on SRLDC website which is extracted as under:
“9.2 ALLOCATION OF UN-REQUISITIONED SURPLUSES….The URS Re-
Allocation will be on first come first serve basis however the request received in the
same time block will be treated at par & shared on proportional basis”.
Accordingly, we direct that respective RLDCs should decide the protocol in this
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 106
regard after consultation with ISGSs and beneficiaries in the region and place the
protocol in the public domain for the information and compliance of all concerned.‟
45.2 SRPC noted the above.
46 RSD & TECHNICAL MINIMUM
46.1 NTPC had filed a Petition No. 130/MP/2017 in the matter of, „Petition under Section 79
of the Electricity Act, 2003 read with Part 7, Clause 4 of the CERC (IEGC) Regulations
2010 in regard to difficulties faced in implementation of the Mechanism for
compensation for degradation of Heat rate, APC and SFC due to Part Load Operation
and Multiple Start/ Stops of Units.‟ In the ROP (for date of hearing 20.07.2017) Hon‟ble
Commission had directed to issue notice to the Respondents on admissibility of the
Petition. The Petition was to be listed for hearing on 18.1.2018.
46.2 NLC had filed Petition No. 144/MP/2017 in the matter of, „Petition under CERC (IEGC)
(Fourth Amendment) Regulations 2016 and CERC's DOP on Reserve Shutdown and
Compensation Mechanism dated 5.5.2017 for seeking upward revision of the Technical
Minimum fixed for schedule of operation of NLCIL lignite based Generating Stations
(TPS I Expn, TPS II stage 1 & 2, TPS II Expn) and other related issues.‟ In the ROP (for
date of hearing 27.07.2017) Hon‟ble Commission had admitted the petition and directed
to issue notice to the Respondents on admissibility of the Petition. The Petition was to be
listed for hearing on 18.1.2018.
46.3 In the OCC Meetings, some of the constituent states had expressed concern that units
had not been taken for RSD though there was huge surrender and the demand was also
low (for ex on Deepawali day). In the 138th
OCC Meeting, SRLDC had made a
presentation of the procedure / guideline under which units can be taken under RSD.
46.4 TCC had noted the above and observed that the CERC approved RSD/TM Procedure
needs to be followed.
46.5 SRPC noted the above.
47 NON-ADHERENCE TO THE MAINTENANCE SCHEDULE SPECIFIC CASE OF
OVERHAULING OF TALCHER STAGE II UNITS
47.1 Issue of non-adherence of the maintenance schedule of Unit 4 of Talcher-II was discussed
in the 31st TCC meeting. NTPC had informed that major overhaul was planned at U-4 of
Talcher-II; deployment of tower crane had lot of issues since it was a running plant. Such
delay would be avoided in future and suitable care would be taken. Necessary instructions
had already been communicated to the stations to adhere to the maintenance schedule.
47.2 KSEBL vide E-mail dated 05.09.2017 had expressed concern regarding the non-adherence
of maintenance schedule of Talcher Unit III. KSEBL had expressed concern regarding the
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 107
repeated change in schedule of AMP of Talcher Unit III. Chairperson, SRPC vide letter
dated 13.09.2017 (Annexure-LXXXIII) had taken up the issue with CMD, NTPC and had
requested to kindly use his good offices to look into the matter and arrange to give strict
instructions to the concerned to strictly adhere to the finalized Maintenance Schedule. Also
it was requested that in case it was necessary to shift the schedule on account of any
reason, the same needs to be done in close consultation with states/RLDC/RPC.
47.3 Subsequently NTPC vide letter dated 11.10.2017 (Annexure-LXXXIV) had assured that
in future, NTPC would adhere to maintenance schedule as decided amongst the
constituents in the OCC Meeting.
47.4 SRPC noted the above.
48 URS ALLOCATION TO NON-BENEFICIARY
48.1 In the Sub-committee Meetings it had been suggested that though a few states are not
having share in some of the CGS in SR, they could be allowed to avail the URS power.
SRPC had approved that URS could also be reallocated to the non-beneficiaries in
Southern Region. Chairperson, SRPC would be kindly requested to take up this matter
with MoP.
48.2 Accordingly Chairperson, SRPC vide letter dated 29.08.2017 (Annexure-LXXXV) had
taken up the issue with MoP and requested that MoP may kindly bestow its attention on
the matter regarding URS Utilization by non-beneficiaries within a Region.
48.3 SRPC noted the above.
49 OUTAGE CATEGORISATION UNDER DEEMED AVAILABILITY
49.1 PGCIL had been requesting deemed availability for major R&M and upgradation works
like at Talcher & Kolar HVDC terminals (letter dated 07.12.2017 enclosed as Annexure-
LXXXVI) etc. The cost is being booked under O&M for most of these activities.
Outages are being categorized as deemed under clause 5(i) of the Procedure for
calculation of Transmission System availability Factor for a Month.
49.2 SRPC noted the above.
50 TECHNICAL COMMITTEE FOR IMPLEMENTATION OF FRAMEWORK ON
RENEWABLE AT STATE LEVEL -FOR
50.1 FOR vide their communication dated 02nd
May 2017 had informed that a Technical
Committee under the Chairmanship of Member, CERC had been formed at the direction of
Forum of Regulators (FOR). This Committee comprises of Technical Members of State
Commission of renewable rich States, viz. Tamil Nadu, Gujarat, Rajasthan, Maharashtra,
Andhra Pradesh, Karnataka and Madhya Pradesh. The objectives of the Committee include
facilitating implementation of Regulations for Forecasting, Scheduling and Deviation
Settlement at the State level, implementation of ABT framework and Ancillary Services in
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 108
member States, among others. The Committee in its eleventh Meeting held in Chennai on
28.03.2017 had decided that Sub-Groups be constituted in Northern Region, Western
Region and Southern Region (three RE rich regions) headed by the Member Secretaries of
the respective Regional Power Committees (RPCs) to examine this issue. This Sub-Group
shall inter-alia examine feasibility and modality of cooperation among states in the
respective region for ensuring optimum utilization of generation resources with least cost
options for balancing across the region. Subgroup Meeting of SR was conducted in SRPC,
Bengaluru on 07th
June 2017.
50.2 A Meeting of the Heads / Representatives of the Sub-Groups had been convened under the
Chairmanship of Member, CERC on 18.8.2017 in CERC, New Delhi to review the
progress on framework for regional co-operation. The Minutes of the Meeting is at
Annexure-LXXXVII. SRPC vide letter dated 14.09.2017 (Annexure-LXXXVIII) had
conveyed the feedback as concluded in the 135th
Meeting of OCC.
50.3 SRPC noted the above.
51 TECHNICAL COMMITTEE CONSTITUTED BY CEA
51.1 A Technical Committee had been constituted by CEA for study of optimal location of
various types of balancing energy sources/energy storage devises to facilitate grid
integration of Renewable Energy Sources and associate issues. Subsequently a Meeting of
Sub- Group of Southern Region formed under the Technical Committee was conducted on
24th
March 2017. The second Meeting of the Technical Committee was held at Chennai on
09.05.2017. The final meeting was held at New Delhi on 29.06.2017.
51.2 CEA had submitted the final report in December 2017 to MoP (report available on CEA
website http://cea.nic.in/reports/others/planning/resd/resd_comm_reports/report.pdf). The
following were the recommendations:
I. Renewable Purchase Obligation (RPO) trajectory as per the revised Tariff Policy,
notified on 28.1.2016, is uniform for all States and therefore, there is a need to share
the balancing charges/financial implication associated with balancing requirements
also on pro-rata basis. As per present norms, RPOs have been prescribed on the basis
of consumption of MUs, after deducting consumption by states from hydro power
generation. The balancing charge/financial implication should therefore also to be
shared in the same ratio.
II. There are two types of balancing generation required, the balancing for uncertainty,
i.e. deviation of actual from schedule which cannot be forecasted within the accurate
limits prescribed, and the generation capacity required to ramp up to meet the
variability due to reduction of generation from wind and solar, even if these can be
forecasted accurately and are known. Both these factors cause a financial impact on
the existing thermal generation.
III. Efficiency of thermal power plants goes down at lower loads, and if they are to
participate in balancing requirement, these need to be compensated on account of
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 109
high availability of RE generation. High RE generation also calls for backing down
of cheaper conventional sources, because of must run status of RE. Frequent start-
stop of machines and frequent ramping up and down, subjects the boiler and turbine
to greater deterioration of equipment and higher O&M needs. The thermal stresses
are highest in case of starting from cold condition and very less for ramping up and
down. There is a cost to these.
IV. Hydro and gas based power plants should preferably be used for balancing. To
facilitate gas plants for balancing, gas supply needs to be modulated as per
requirement.
V. Balancing source could be located either within the boundary of a State or outside the
boundary of the host State.
VI. There is a need to discriminate between balancing power needs on account of load
variation from that on account of variability in RE generation. Real time renewable
generation data acquisition is required by the States to see to what extent the states
deviation under Deviation Settlement Mechanism (DSM) is due to renewable
variation.
VII. Ancillary Services in India may be started to ensure capacity on a permanent basis
for grid security. Balancing sources should form part of the bigger umbrella of
Ancillary services. There is a need to categorize various type of balancing sources,
based on response time, to be activated within seconds, minutes and hours, and price
for each category determined through bidding. The balancing generation should have
a commitment charge and a usage charge for a certain pre-defined usage. If usage
exceeds the same, there should be an additional payment for the extra usage, all pre-
defined. Payment should also be based on performance.
VIII. The extent of balancing required for balancing renewables may be extracted from
these Ancillary Services.
IX. Balancing resources of the States/Centre/Private sector generators could be
surrendered and treated as common resources, and the owner of these assets
compensated if they win the bid for ancillary services. For this, they would have to
set aside the contracted quantity.
X. These Ancillary Services may be kept under the control of RLDCs. Cost of these
resources need to be shared on pro-rata basis by all the beneficiaries.
XI. Demand Response is a very quick and cheap way of substituting for frequency based
ancillary services to some extent, to enable optimum utilization of generation and
transmission assets and must be implemented by all States.
XII. Limits of net DSM for load variation may be maintained as before, after segregating
it from renewable variation, with ancillary services for renewable generation
variation and frequency control under the control of the RLDCs, for managing the
grid. Alternately, the renewable rich States may manage the same within their
boundary and get paid for the financial implication by non-renewable rich States on
pro-rata basis, based on consumption, depending on calculation of the financial
implication per unit of renewable generation done on a normative seasonal basis or
weekly basis, as is done for DSM charges.
XIII. In case of the latter option, settlement of balancing charges/financial implication for
the uncertainty portion should be done post facto, on the lines of DSM charges.
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 110
XIV. Firm base load power could be supplied to neighboring hydro rich countries in return
for balancing power from them, through banking, in order to have a win-win
situation for both India and the neighboring countries.
XV. Till the time intra-state DSM Regulation by the SERCs is not operational, the
mechanism of inter-state DSM should be followed.
XVI. Cost benefit aspects need to be studied, as regard to location of new balancing
sources, versus augmentation of transmission system. This aspect assumes a higher
importance, in view of the increasing land cost in urban areas. In some cases,
location of balancing sources in the form of storage elements, near the point of
generation may be more economical.
XVII. A pilot battery project in Tamil Nadu has been proposed as a test case for a pilot
project.
51.3 SRPC noted the above.
52 COMMITTEE FOR PROPOSING METHODS FOR INTEGRATED OPERATIONS
OF RESOURCES IN A RIVER IN THE COUNTRY
52.1 In the 4th
meeting of the Technical Committee (held on 13.06.2017) chaired by Member
(Planning), CEA, it had been decided that in order to tackle intermittency / variability of
renewable energy generation, support of hydro power generation resources would be
required for optimum utilization of the resources. Accordingly, a Standing Committee was
constituted under the Chairmanship of Member Secretary, NRPC along with representation
from number of Central/State and concerned entities vide order dated 03.11.2017
(Annexure-LXXXIX). The TOR of the Committee is as follows:
1) Calculate hydro power potential of each individual hydro station and its month-
wise distribution over the year.
2) “Integrated Reservoir Operation of hydro power plant reservoir in a river for the
country”
3) Guidelines for fixing the reservoir levels for valley project with a view to optimum
utilization for peaking and balancing
4) Calculate peak power availability considering irrigation needs and whether the two
can be matched
5) Guidelines for operation and utilization of pump storage scheme for integration of
RE generation especially in view of shared projects.
6) Guidelines for reduction in APC of hydro station
7) Silt forecasting for hydro power plants
8) Guidelines for incentive to pump storage scheme
52.2 SRPC noted the above.
53 INCLUSION OF DRAWAL OF KARAIKAL REGION OF UT OF PUDUCHERRY
IN REA
Secretary, Government of Puducherry vide letter dated 5.02.2018 (Annexure-XC) has
proposed that Power Drawal of Karaikal Region of UT of Puducherry may also be
included in the Regional Energy Accounting of SRPC
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 111
TCC deliberations
TANTRANSCO had suggested that this issue could be discussed in Commercial sub-
committee.
PED had informed that the earlier inclusion of drawal of Karaikal region of UT of
Puducherry was discussed in the 23rd
SRPC /22nd
TCC Meeting held on
26/25.10.2013 when Karaikal region was not having ISTS connectivity (fully
embedded in Tamil Nadu). In that SRPC meeting, the following had been noted,
„Chairman, TANTRANSCO stated that Puducherry & Karaikal being enclave
territories in TN, the limited suggestion was that drawal of power by Puducherry at
Karaikal be under Regional Energy Accounting framework and within its regional
entitlement, provided TN transmission network permitted the same.‟ Karaikal Region
would now be connected to ISTS and drawal of power would be within REA
framework and regional entitlement of PED.
It was noted that this issue would be further deliberated in the SRPC Meeting.
SRPC deliberations
It was noted that Karaikal would be drawing power through LILO of NLY-Bahoor
line at Karaikal, which is a PGCIL ISTS line. This scheme had been approved in
Standing Committee as well as in SRPC Meetings. Electricity Department,
Puducherry had also assured that drawal (including that of Karaikal) would be
within the entitlement of its CGS drawal. There was thus no need to deliberate on
this issue in the Commercial Committee.
SRPC noted that above was in line with prevailing Regulations and due approvals
had been availed.
Finer issues relating to Metering, SCADA could be finalized in the Sub Committee
Meetings.
54 HIGH DECLARATION OF DC FROM NTPC KUDGI THERMAL POWER PLANT
FROM 01.01.2018 ONWARDS
54.1 KPTCL vide letter dated 12.02.2018 (Annexure-XCI) had brought to attention about the
high declaration of DC from NTPC, Kudgi from 01.01.2108 onwards. It had been stated
that there is a total mismatch with projected LGBR figure furnished by NTPC with respect
to Kudgi Thermal Plant to SRPC particularly from the last week of December 2017 which
had resulted in uncalled purchases made by KPTCL for meeting the demand and energy
requirement during summer and examination period based on the LGBR data. It was stated
that after COD of 2nd
unit of Kudgi, the declaration is in the range of 1,520 MW which
works out to around 36 MU/day translating to 1,080 MU instead of 471 MU furnished by
NTPC in the LGBR. In the 140th
OCCM, NTPC representative did not agree to revise DC
as per LGBR. It had been requested that this matter may be taken up and resolved in the
TCC/SRPC Meetings.
54.2 SRPC vide letter dated 06.02.2018 (Annexure-XCII) had already taken up this issue with
NTPC. Chairperson, SRPC vide letter dated 06.02.2018 (Annexure-XCIII) had
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 112
communicated the concern of beneficiaries to Chairperson, CERC. In case of new CGS
stations with higher variable charges, there would thus virtually be no need felt by the
station to maintain coal stock position as per stipulated norms to address energy security
concern. In respect of generating station whose tariff is determined by Hon‟ble CERC
there needs to be adequate Regulatory provision so that Thermal stations maintain
adequate coal stock as per norms as a requisite to declaration of full DC. This would help
avoid situation when station tends to give high DC declaration while not maintaining
adequate coal stock since due to merit order consideration it may not get scheduled fully. It
was also requested that the Hon‟ble Commission may kindly bestow its kind attention on
this matter of full DC declaration with no adequate coal stock as per norms.
54.3 The following had been noted in the TCC Meeting:
KPTCL had expressed serious concern on DC variation compared to LGB projection
in case of Kudgi after the COD of Unit II from 31.12.2017. On the day of higher DC
the SLDC Control Room had contacted Kudgi Control Room and conveyed its
apprehension. Since Karnataka share was around 53 %, this was having a major impact
on availability. Based on 168/169/170 LGBR, purchases had been planned and entered
into. Besides huge backing down (of purchases, state generation, ISGS including
Kudgi), hydro was also to be availed and this was leading to heavy under-drawals.
KPTCL requested NTPC to restrict the DC to LGB figures up to March 2018 in this
scenario. Full assistance had been rendered to NTPC for Unit 2 COD declaration and
NTPC should reciprocate by restricting DC to LGB. Also, SLDC was giving minimum
schedule which was being jacked up to Technical Minimum by SRLDC leading to
undesirable increase in availability /under-drawals. The fixed charge liability was also
substantial in this regard.
It was noted that LGB is a statutory document as per provisions of IEGC and is being
used extensively for power purchase, operational planning etc. Power purchase needs
to be optimized (quantum/economics) as no state was having load shedding/power
cuts; any radical change disturbs the planning process.
NTPC had stated that the DC declaration was prerogative of Generator as per
Regulations. As per IEGC, the LGB was to be reviewed on monthly basis. Since the
installed capacity of unit is 800 MW, any change is reflected to that extent. In future,
the LGB figures would be reviewed on a monthly basis. LGB is prepared on a
yearly/quarterly basis with provision of monthly revision while DC is given on day
ahead basis and both should not be correlated. All beneficiaries were fully aware and
consulted/coordinated/informed at each step and due process had been followed for
COD of Unit II.
KPTCL had observed that without adequate coal stock, persisting coal supply issues
and unstable DC from Kudgi it was not feasible to plan the energy balance of control
area considering the likely availability from both the units and therefore LGB figures
had been considered. COD declaration did not imply that full DC had to be declared.
KSEBL, TSTRANSCO and TANTRANSCO had stated that power purchase planning
was by means of considering LGB projections. TANTRANSCO had stated that they
face similar situation during KKNPP deviations from schedule outages and hence
generation actuals should be close to their availability. KSEBL stated that adequate
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 113
coal stock was to be maintained to declare consistent DC.
CEA had stated that LGB was being used for a number of important activities and was
a document under regulatory provisions. In IEGC, LGBR falls under Outage Planning
and the monthly review is restricted to Outage coordination/rescheduling. Purchase
planning is regularly stressed considering the LGBR as the base document.
APTRANSCO had stated that all the constituents/generators vary w.r.t. LGBR based
on a number of conditions. Therefore, this issue could be settled bilaterally between
NTPC and KPTCL.
It was noted that RSD procedure needs to be followed considering the states view.
Also, the decision to go for RSD was with the generator and bringing the schedule to
Technical Minimum as a practice may not meet the objective of TM/RSD Procedure.
Bringing unit to Technical Minimum should not be at operational/economic expense of
the Control Area.
SRLDC had stated that TM/RSD procedure had been explained in the OCC forum and
if all the beneficiaries agree they would go for RSD. 55% Technical Minimum is being
followed since the provisions of Regulations were made effective.
TANGEDCO had raised certain issues on methodology for arriving at variable cost of
different stations for using it in MOD. The difference for state and central generator
was significant since different procedure/components (landed cost, royalty etc) were
being considered to arrive at the variable cost. All components to arrive at variable cost
needed to be furnished both by state & central generators so as to work out variable
cost at same platform. It was leading to distorted MOD. MOD concept is only stated in
SERC Regulation and not in CERC Regulations. TANGEDCO was suggested to
kindly take up this issue in appropriate forum.
TCC had suggested that the Kudgi DC vs LGB issue could be further deliberated in the
SRPC Meeting.
SRPC deliberations
KPTCL stated that they had gone for purchase of 900 MW keeping in view the LGB
projection of Kudgi in 170th
LGBR, wherein only 8.3 MU/day was projected (for
Karnataka) while the present share, as per DC, was more than double. Even if Kudgi
generation is backed down, the fixed charge (FC) liability for the additional DC
remains with Karnataka. It was suggested that NTPC Kudgi should restrict their DC as
per LGB projections.
Chairperson, SRPC observed that this was a critical issue which needs to be
fundamentally addressed. He therefore suggested that the issue could be deliberated in
detail in a separate Meeting.
55 ROSTER FOR HOSTING THE SRPC MEETINGS
The updated roster considering the new Members also is given below:
Sl.
No.
Constituent
/Entity
Sl.
No.
Constituent /Entity
1 UPCL 10 NTPC
2 JSWEL 11 NTPL
3 NPCIL 12 ANDHRA PRADESH
Minutes of the 33rd Meeting of SRPC held on 17.02.2018 Page 114
4 SGPL 13 TRADER
5 HNPCL 14 CEPL
6 TAMIL NADU 15 KARNATAKA
7 IL&FS 16 NTECL
8 PGCIL 17 KERALA
9 TELANGANA 18 NLC
56 VOTE OF THANKS
Chairperson, SRPC thanked all Members for making this SRPC Meeting successful. A
number of issues had been resolved while few issues could be reviewed in the next SRPC
Meeting. He again thanked the NLCIL Management for the excellent arrangements made
for conduct of the Meeting.
57 DATE & VENUE OF THE NEXT MEETING OF SRPC
UPCL kindly consented to host the next SRPC Meeting.
*********