POWER SYSTEM OPERATION CORPORATION LIMITEDSOUTHERN REGIONAL LOAD DESPATCH CENTER

BANGALORE 1

15th Tcc / 16th srpc meeting

Venue: GOA

Date: 29th / 30th April 2011

NEW PROJECTS OF NTPC, NLC, NPCIL & UMPP

SL NO 1 OF TCC

NTPC SIMHADRI STAGE - II(2 X 500)

SL NO 1.1 OF TCC

NTPC SIMHADRI STAGE - II• MoP conveyed the allocation of Power from Simhadri Stage II to beneficiary

states.

• Units I test synchronised in March 2011 & COD yet to be declared.

• Units II likely to be commissioned by June 2011

• Scheduling of Simhadri Stage II will be done by SRLDC w.e.f COD

• Data / Speech communication to SRLDC is made operational & under testing

• Till the date of COD of Simhadri Stage – II

• Simhadri shall regulate infirm power injection as per SRLDC instruction on

real time basis

NPCIL KUDANKULAM STAGE 1 (2 X 1000)

SL NO 1.3 OF TCC

NPCIL–KUDANKULAM STAGE I• NPCIL informed that for Kudankulam all equipment's are in place at site and the

commissioning activities are in full flow.

• Units I & II are likely to be commissioned by June 2011 & March 2012.

• In Special TCC held on 3rd Jan 2011. NPCIL Informed Reactor of 1st Unit was likely to go critical

by March 2011and generation was expected from April 2011

• SPS & Speech facilities to be provided

- Permission given by TN for placing MUX

- SRTS -2 to confirm the status / probable date of completion

• SEM & SCADA Data Validation to be done by NPCIL – Observed error of 16kV between Field

and Scada data at Kudankulam bus

• Commissioning of Bus Reactor at Kudankulam is essential for ensuring availability of reliable

start up supply.

• The parallel closing of second line between Tirunelvelli – Kudankulam will be at 410 kV and

Opened at 425 kV

SRPC TN REPLY

VALLUR JOINT VENTURE BETWEEN NTPC & TNEB ( 3 X 500)

SL NO 1.4 OF TCC

VALLUR JOINT VENTURE BETWEEN NTPC & TNEB (3X500)

• Unit sizes of 500 MW.

• TANTRANSO had informed that commissioning of the 1st unit could be delayed

by 2-3 months because of issues regarding the coal handling plant.

• MoP vide letter dated 28th September 2010 had communicated the allocations

to the beneficiaries states as given:Allocation:AP: 178.8 MWKAR: 111.5 MWKER: 49.9 MWTN: 1040.6 MWPondy: 6.7 MWUnallocated: 112.5 MW

Nellore – Allmatty D/C Study Results

Nellore – Allmatty D/C Study Report

JOINT VENTURE OF NLC& TNEB AT TUTICORN (2 X 500)

SL NO 1.5 OF TCC

Joint Venture of NLC & TNEB at Tuticorin• NLC had informed that orders had been placed on M/s BHEL and civil works had

commenced.

• MoP had communicated allocations to the beneficiary States.

• NLC had informed that with the action plan given by M/s BHEL, Units I & II were

scheduled to be commissioned during August 2012 & October 2012

respectively.

KAYAMKULAM 1950 MW/ 1950 MW

SL NO 1.6 OF TCC

KAYAMKULAM 1950 MW/1050 MW PLANT• Feasibility report for the project had been finalized by NTPC.

• Pipeline from Kochi Terminal to Kayamkulam was being developed by M/s GAIL.

• GoI had circulated drafts on price pooling mechanism. Price of LNG was linked with

prices of crude oil. The unit rate was likely to be Rs. 3.75 - Rs. 4.00 per unit in the

present scenario where crude oil prices ranging between $ 70-80/barrel.

• Requisition from KPTCL & KSEB received by NTPC.

• Conditional consent communicated to NTPC by APTRANSCO.

• TANTRANSCO & Puducherry – Presently price pooling mechanism not very clear,

would be interested in case tariff was advantageous.

NLC NEW THERMAL POWER PROJECT(2X 500)

SL NO 1.7 OF TCC

Neyveli New Thermal Power Project (2x500 MW)• Director (Power ),NLC had informed that the project was likely to take 40 months after PIB

approval and was targeted to be commissioned in 2014. PIB approval was likely in the next

six months.

• MOP vide letter dated 29th October 2010 had communicated allocation of power from this

project

• PGCIL informed NLC had applied for connectivity. NLC had been requested to apply for LTA

also to take up planning of evacuation scheme

• Tamil Nadu had informed that this being a replacement project since Tamil Nadu was

loosing 600 MW , entire 1000 MW from the new project to be allocated to them.

Neyveli New Thermal Power Project (2x500 MW)

• TNEB’s share was 100% in Neyveli Stage 1.

• Old plant was commissioned in 1962.

• Present Evacuation Plan is at 230/110kV

• Designed for evacuating 600MW.

• Since 2 x 500MW plant is coming up, inter connection to 400kV is desirable.

• Wheeling issue

KRISHNAPATTANAM UMPP(3960 MW)

SL NO 1.8 OF TCC

KRISHNAPATTANAM UMPP(3960 MW)

KRISHNAPATTINAM UMPP

400kV D/C QUAD MOOSE

765 KV

TN UMPP

Cochin

Madugiri

KRISHNAPATTANAM UMPP(3960 MW)• The unit configuration had been finalized as 6 x 660 MW and CERC had been

approached for revised configuration, clearance awaited.

• CMD, APTRANSCO had informed that about Rs. 300 Crores had already been

invested and progress was their in all the fronts.

• Project is being developed by Reliance Power Limited.

• The plant may come up beyond 2014.

Schedule Date of Commissioning of the Central Sector/JV ProjectsStation Unit Installed Capacity

(MW)Original date of commissioning Revised date of

commissioning

Simhadri Stage - II I,II 500, 500 11th Plan Mar-11, June-11

Kayamkulam I, II & III 1050/1950 11th Plan 12th Plan

Vallur JV with TNEB IIIIII

500+500+500+

11th Plan Oct-11Dec-11Dec-12

Neyveli – II (Exp) III

250250

2006 – 07 Mar-11Jun-11

Tuticorin JV with TNEB I II

500500

11th Plan Aug-12Oct-12

Sirkalli TPP I,II,III 3 X 660 52 Months, 58 Months,64 Months from GOI approval

Kaiga IV 220 Sep – 07 Nov-10

Kudankulam Stage – I III

10001000

Dec – 07Dec – 08

Jun-11Mar-12

Kalpakkam (PFBR) I 500 2010 – 11 Mar-12

Krishnapattanam IVI

4000 11th Plan June 2013Feb 2015

Cheyyur 4000 2015 – 17 2015-17

PAYMENT OF CHARGES OF TNEB OWNED TRANSFORMERS AT SRIPERUMBUDUR & SALEM

SL NO 2 OF TCC

1. Discussed in 13th Commercial Sub-Committee meeting held on 19th July 10

whereas PCKL had agreed to put up a draft computation for the tariff.

2. In the 14th SRPC meeting, it was noted that TCC had agreed that the proposal

prepared by PCKL be deliberated in details by the Special Commercial Committee

before being put up to TCC/SRPC.

3. Matter was further deliberated in the Special Commercial Sub-Committee meeting

held on 29th Sep 10 wherein it was noted that proposal from PCKL was awaited,

while APTRANSCO had also submitted their proposal on the issue.

4. Outcome of the 14th commercial Sub – Committee meeting

• TNEB would compute the charges for the period from 1.4.1991 to 31.12.2011 in line with

norms prevailed during the period and the Commercial Sub-Committee would validate

the same for subsequent approval of TCC/SRPC.

PAYMENT OF CHARGES OF TNEB OWNED Xmers AT SRIPERUMBUDUR & SALEM

MAINTENANCE OF MARCONI MAKE SDH EQUIPMENT

SL NO 3 OF TCC

1. TN to Expedite Commissioning of their system to Coincide with SR2,

PowerGrid Plan

MAINTENANCE OF MARCONI MAKE SDH EQUIPMENT

Microwave Details

Wide band Failure

Minutes 12th Jan 10

EXISTING WIDEBAND NETWORK UNDER SOUTHERN REGION ULDC PROJECT

CORPORATE LD&C DEPT.

B’LORE RSCC

CHENNAI SLDC

Karnool

Muddanur

Gooty

Ramagundam

Vijayawada Sub-LDC

PeddapallyDurshed

Jammikunta

Warangal Sub-LDCGazuwaka

Visakapantam SWS

Kakinada

Bommur

Bhimadole

VTPS

N’ Sagar PH

Tallapally

Srisailam PH

Srisailam LBPH

Shapur NagarCh. GuttaVidyut Soudha

Hydearbad SLDC (400)

Chinakam Pally Sub-LDC (Cuddaph)

Ananthapur

Somayajula Pally

SomanhallyKumbalagodi

Salem 400Salem 230

Sriperabudur

S.P. Koil

Neyveli-IPanruti

Pondicherry SCC

Villianur

ChidambaramMyladuthurai

Thiruvarur

Erode Sub-LDC

Kovilvenni

KaraikudiSivaganga

Madurai Sub-LDC

Madurai 400

Pudukottai ThirumayamOrthanaduAdankottai

PongalurUdumalpet

Trichy 230Ingur

Kannur Sub-LDC

Kozhokode B

Chalakudy

Pallom

KundaraParipally

Trivandrum North

Vidyuthi Bhavanam Sub-LDC

Kayamkulam

Kalamassery SLDCVaikkam

Trichur North

KPTCL SLDC

Hubli Sub-LDC

Davanger Sub-LDC

F. O. Link (APTRANSCO)M.W. Link (ULDC)

RSCCSLDCSub-LDC/ SCCRTU / Wideband locationRepeater StationF. O. Link (ULDC)

M.W. Link (TNEB)

VSAT link (KPTCL)

Ghanapur

C.S. links (ULDC)Constituents links (ULDC)APTRANSCO links

Colour Code

LEGENDS:

11147

63

6687

17

9912

46

13436

20

76

58

9857

302

181

19

64

140

156

30

111

93

13031

26

147

104

217

Proposed Solution for replacement of Existing Microwave Links installed under Southern Region ULDC Project

Visakapantam SWS

B’LORE RSCC

CHENNAI SLDC

Karnool

Muddanur

Gooty

Ramagundam

Vijayawada Sub-LDC

Durshed

Warangal Sub-LDC

Gazuwaka

Kakinada

Bommur

BhimadoleVTPS

N’ Sagar PH

Tallapally

Srisailam PHSrisailam LBPH

Shapur NagarCh. Gutta

Vidyut Soudha

Hyderabad SLDC (400)

Chinakam Pally Sub-LDC (Cuddaph)

Ananthapur

Somayajula Pally

Somanhally

Salem 400

Salem 230

Sriperabudur

S.P. Koil

Neyveli-IPondicherry SCC

Villianur

Myladuthurai

Thiruvarur

Erode Sub-LDC

KaraikudiMadurai Sub-LDC

Madurai 400

Pudukottai

Udumalpet Trichy 230

Ingur

Kannur Sub-LDC

Kozhikode B

Chalakudy

Pallom

Kundara

Trivandrum North

Vidyuthi Bhavanam Sub-LDC

Kayamkulam

Kalamassery SLDC

Trichur North

KPTCL SLDC

Hubli Sub-LDC

Davanger Sub-LDC

Ghanapur

11

147

63

66

8717

99

12

46

13436

20

76

58

98

57

302

181

19

64

140

156

30

111

93

13031

26

147

104

2178787

Total OPGW = 1214kmsTotal UGFO = 210 kms

RSCC

SLDC

Sub-LDC/ SCCRTU / Wideband location

LEGEND

Proposed UGFO link

Proposed OPGW link

Proposed Radio link

F.O Link (ULDC)F.O. Link (APTRANSCO)OPGW Link (existing)

VSAT LINK (KPTCL)

Constraints In SR System

SL NO 4 OF TCC

MULTI-CIRCUIT TOWER ON 220 KV EDAMON-KAYATHAR CORRIDOR

EDAMON-TNVL WOULD BE AT 220 KV TO BEGIN WITH

TIRUNELVELI

KOODANKULAMTRIVANDRUM

EDAMON

COCHIN

THRISSUR

MADURAI

UDUMALPET

ARASUR NLY-EXP

NEYVELI

BAHOOR

PUGALUR

TRICHY

SALEM

HOSUR

MYSORE

SP-BUDUR

KALIVENDAPATTU

ALMATHI

CHITOOR

KOLAR

S’HALLI

NLMNG

HOODY

TRANSMISSION SYSTEMS IN SR IN PROGRESS

KARAIKUDI

HASSAN

KOZHIKODE

NLY2-EXP

KOODANKULAM

UNIT 1- JUN 11

UNIT 2- MAR 12

NLY-2 EXPN

UNIT1- MAR 11

UNIT-2 JUN 11

400 KV D/C MYSORE-KOZHIKODE

a) Reduce losses by ~ 8MW

b) Enhance margin across constrained S1-S2 corridor.

c) Enhanced reliability for N. Kerala (an issue at present)

d) Relief for Thrissur(Madakathara) transformer ( Fully loaded)

e) Relief on loading of Idukki-LP-Madakathana 220 KV lines

g) Enhanced transfer capability to Kerala, opportunity to conserve hydro.

400 KV D/C MYSORE-KOZHIKODE STUDY

MYSORE

KOZHIKODE

HOOTAGALLY

TK HALLI

KANAKPURAHORAHALLI

SOMANAHALLI

KADAKOLA

KANIYAMPET

AREACODE

NALLALAM

KANJIRODE

TRICHUR

1. WITH OUT KOZHIKODE-MYSORE D/C2. GEN AT IDDUKKI ABOUT 520MW

NELAMANGALA 173 MWx2

173 MW

111 MW

106 MW

48 MW

104 MW

191 MW13 MW

227x2 MW

72 MW

105 MW

139 MW

Losses 830.4MW

Coal Stock Position

SL NO 5 OF TCC

Normative Vs DCDC vs Actual

Coal Stock Position( As on 27-Apr-11)

DAILY LINKAGE IN 1000

OF TONNESACTUAL IN 1000 OF

TONNES IN DAYS

APTRANSCO

VTS 26 127 5

KTS 18.9 301 16

RYTPS 16.5 97 6

SIMHADRI 23.1 164 7

KAKATIYA 5.8 109 19

ISGS

RSTPS 38.1 535 14

TALCHER 52 417 8

KPCL

RTPS 25.1 404 16

BTPS 8.7 52 6

TNEB

ETPS 6.9 14 2

MTPS 13.6 73 5

NCTPS 10.4 59 6

TTPS 18.5 49 3

Issues Related to Transmission Schemes Agreed in Standing Committee

SL NO 6 OF TCC

HOSUR

KOLAR

SOMANAHALLI

ELECTRONIC CITY

HOSUR-ELECTRONIC CITY 400KV D/C TRANSMISSIN LINE400kV lines

YERANDAHALLI

In standing committee meeting it is proposed to Utilise the ROW of 220kV Yerandahalli-Hosur line for 400kV Hosur-Electronic City D/C line

KPTCL Director (Transmission) had stated that KPTCL would examine some alternate transmission system for Electronic city.

HOSUR

KOLAR

SOMANAHALLI

ELECTRONIC CITY

HOSUR-ELECTRONIC CITY 400KV D/C TRANSMISSIN LINE400kV lines

YERANDAHALLI

In 28th standing committee meeting it is proposed to Utilise the ROW of 220kV Yerandahalli-Hosur line for 400kV Hosur-Electronic City D/C line

KPTCL Director (Transmission) had stated that KPTCL would examine some alternate transmission system for Electronic city to avoid ROW problems

KPTCL had been requested to explore possibility of establishing 400kV S/S at their existing 220kV S/S at Yerandahalli to solve the ROW problem.

400 KV D/C HOSUR-ELECTONIC CITY

• PGCIL to do joint survey with KPTCL, if necessary latest stringing

methodology would be adopted.

• KPTCL informed that critical RoW issues existed at two locations.

• CE (Trans.) Bangalore had been nominated from KPTCL side for

joint survey.

• APTRANSCO had requested to furnish cost implication on account

of adoption of unconventional technology.

Transmission Capability of HVDC Back to Back stations

SL NO 7 OF TCC

Transmission Capability of HVDC Back to Back stations

• In 57th OCCM of SRPC, SRLDC had clarified that it would not be able to

certify the past cases as PDO was in service during that period and

constituents had to take a decision in this regard

ULDC Requirements Beyond 2011

SL NO 8 OF TCC

LTSA FOR SR –ULDC SCHEME• Maintenance for comprehensive software and hardware maintenance support

for EMS/SCADA system supplied under SR-ULDC scheme with two year

extension is going to expire on 31-12-2011.

• As the upgradation process will take quite a time, as per the request of

constituents SRLDC has obtained the quote from M/s GE for extending the

AMC by one year with a provision for one more year for further extension if

required.

• SRLDC seeks approval of constituents to go ahead with the proposal with

negotiation as the rate quoted by M/s. GE was 30% (Approx) higher than the

present AMC charges

AMC CHARGES OF SR ULDC SCHEME FOR THE PRESENT AND PROPOSED BY M/S GE

Sl.No. Constituent Present Total AMC in Rs. Proposed Total AMC in Rs. 1 RSCC 1,67,38,566 2,23,21,282 2 APTRANSCO 1,73,11,346 2,30,81,561 3 TNEB 1,48,71,391 1,98,26,621 4 KPTCL 1,35,55,653 1,80,80,357 5 KSEB 1,47,70,742 1,96,95,948 6 PUDUCHERRY 1,18,34,589 1,57,87,645

PROPOSED AMC COMBINED ON SHORE AND OFF SHORE

ONSHORE OFFSHORE TOTAL TOTAL

Per Annum Per Annum Per Annum Per AnnumSl.No Constituent INR INR INR INR

1 RSCCSoftware Support for RSCC 4,977,295.00 4,324,307.54 9,301,602.54 12,499,918.00 Hardware Support for RSCC 3,979,507.00 3,457,456.14 7,436,963.14 9,821,364.00 Sub-Total 8,956,802.00 7,781,763.68 16,738,565.68 22,321,282.00

2 APTRANSCOSoftware Support for APSEB 5,147,620.00 4,472,299.79 9,619,919.79 12,925,674.00 Hardware Support for APSEB 4,115,687.00 3,575,738.88 7,691,425.88 10,155,887.00 Sub-Total 9,263,307.00 8,048,038.67 17,311,345.67 23,081,561.00

3 TNEBSoftware Support for TNEB 4,422,084.00 3,841,967.58 8,264,051.58 11,102,908.00 Hardware Support for TNEB 3,535,598.00 3,071,741.52 6,607,339.52 8,723,713.00 Sub-Total 7,957,682.00 6,913,709.10 14,871,391.10 19,826,621.00

4 KPTCLSoftware Support for KEB 4,030,841.00 3,502,020.41 7,532,861.41 10,125,000.00 Hardware Support for KEB 3,222,786.00 2,800,005.91 6,022,791.91 7,955,357.00 Sub-Total 7,253,627.00 6,302,026.32 13,555,653.32 18,080,357.00

5 KSEBSoftware Support for KERALA 4,392,152.00 3,815,960.19 8,208,112.19 11,029,731.00 Hardware Support for KERALA 3,511,666.00 3,050,963.37 6,562,629.37 8,666,217.00 Sub-Total 7,903,818.00 6,866,923.56 14,770,741.56 19,695,948.00

6 UT PONDY Software Support for UT PONDY 3,519,072.00 3,057,395.80 6,576,467.80 8,841,081.00 Hardware Support for UT PONDY 2,813,611.00 2,444,509.84 5,258,120.84 6,946,564.00 Sub-Total 6,332,683.00 5,501,905.64 11,834,588.64 15,787,645.00

Grand Total (INR) 47,667,919.00 41,414,366.97 89,082,285.97 118,793,414.00

Note : The above prices does not include taxes and duties.

Price Break Up Details for AMC OF SR ULDC SCADA

PRESENT AMC VALUE

Automatic Data Reading (AMR) /Collection

SL NO 10 OF TCC

Analysis Details

IEGC RELATED ISSUES

SL NO 11 OF TCC

RGMO

SL NO 11.1 OF TCC

RGMODescription Units Mandated on RGMO as per IEGC Telemetry Status

Hydro Thermal total Avaialble Not available Total

No of units 194 59 253 231 22 253

Installed capacity 10888 15600 26488 25996 492 26488

Status of RGMO in SR

Confirmation

for participation

Excemption/Extention

requested toCERC

Offer received fromOEM/Implementation

Unit Notparticipating in

RGMO as declaredby the constituents

No informationwith RLDC for

status Total

No of units 9 52 64 36 95 256

Installedcapacity 4310 6185 8855 1771 5367 26488

RGMO

RGMO analysis:

1.Droop >30% considered as non response for RGMO

2. Ramagundam Unit #5, 6, & 7 generation is in the range of 102 to 105%

2. On all instances Idukki, Varahi, Nagjhari, Lower Sileru, Sharavati, Sengulam, Kundah

–I,II,III are responding for immediate increase and decrease. (Units already in FGMO)

3. In adequate response from thermal generating units

4. Mostly hydro generating units responded (which is under FGMO)

5. In adequate response leading to system insecurity Hence petition will be filed by

SRLDC to CERC during next month

Mandated And Declared Summary

Case Study Response Summary

Summary

Automatic Demand Management Scheme

SL NO 11.2 OF TCC

Extracts from IEGC dated 28th April 2010Clause 5.4.2 (d)

Quote:

The SLDC through respective State Electricity Boards/Distribution

Licensees shall also formulate and implement state-of-the-art demand

management schemes for automatic demand management like rotational load

shedding, demand response (which may include lower tariff for interruptible

loads) etc. before 01.01.2011, to reduce overdrawl in order to comply para

5.4.2 (a) and (b) . A Report detailing the scheme and periodic reports on

progress of implementation of the schemes shall be sent to the Central

Commission by the concerned SLDC.

All the Constituents are requested to Operationalize

Unquote:

Automatic Demand Management Schemes

Status

Automatic Load Shedding Scheme for Overdrawing Constituents at frequency less than 49.5Hz

SL NO 11.3 OF TCC

• In the 14th SRPC Meeting held at Cochin, Constituents had agreed to

Implement the Load Shedding Scheme for over drawing constituents to avert

frequency falling below 49.5 Hz with the following quantum

• APTRANSCO had been identified 800 MW and tested for remote tripping.

• TANTRANSCO had been identified 647MW and made operational

• KSEB had identified 125 -250 MW

• KAR had identified 384MW ( Max)

• PONDY to furnish the feeder details.

• The Quantum of Load relief through Radial feeder is due for revision.

Excel Computation

Status

Arranging Interruptible Loads in four groups

SL NO 11.4 OF TCC

Extracts from IEGC dated 28th April 2010Clause 5.4.2 (e)

Quote:

Unquote:

In order to maintain the frequency within the stipulated band

and maintaining the network security, the interruptible loads shall be

arranged in four groups of loads, for scheduled power cuts/load

shedding, loads for unscheduled load shedding, loads to be shed

through under frequency relays/ df/dt relays and loads to be shed

under any System Protection Scheme identified at the RPC level.

These loads shall be grouped in such a manner that there is no

overlapping between different Groups of loads. …………………...

•AP & Kerala had completed the exercise

•KPTCL, Pondicherry & Tamil Nadu had initiated the exercise

Status

Demand Estimation

SL NO 11.5 OF TCC

Extracts from IEGC dated 28th April 2010Clause 5.3 (e)

Quote:

Unquote:

While the demand estimation for operational purposes is to be

done on a daily/weekly/monthly basis initially, mechanisms and

facilities at SLDCs shall be created at the earliest but not later than

1.1.2011 to facilitate on-line estimation of demand for daily operational

use for each 15 minutes block.

Constituents are furnishing the block wise forecast

Status

UFR

SL NO 11.6 OF TCC

AUFR settings and Quantum Implementation Status

• Pondicherry – To confirm the status

• UFR Quantum is due for revision

Status

Pending Field Inputs

SL NO 11.7 OF TCC

Pending as on 20.04.11

Year wise comparison

Constituent Mar2008 Mar2009 Mar2010 Mar2011 Apr2011 (20/04/11)

APTRANSCO 618 541 640 484 410KPTCL 800 693 766 334 332KSEB 0 0 25 18 24TNEB 400 138 129 106 105

SR 1 (POWERGRID) 3 4 26 6 17SR 2 (POWERGRID) 205 411 729 173 174

NTPC

RSTPS 56 32 22 35 31RGCCP(Kylm) 16 16 16 16 16

NPCIL

KAIGA 40 40 45 61 63MAPS 61 61 64 61 37

NLC

NLC TS 2 17 13 30 77 57NLC TS 1 EXP 1 1 1 0 0

TOTAL 2217 1950 2493 1371 1266

Details

TRANSMISSION SYSTEM FOR EVACUATION OF POWER FROM SIMHADRI-II TPS (2x500 MW) OF NTPC

SL NO 12 OF TCC

TRANSMISSION SYSTEM FOR EVACUATION OF SIMHADRI-II

SIMHADRI

GAZUWAKA

VEMAGIRI

400KV GAZUWAKA-VEMAGIRI D/C LINE LILO AT SIMHADRI FOR EVACUATION OF SIMHADRI-II (2x500) POWER

IN 28TH STANDING COMMITTEE MEETING, IT WAS DECIDED THAT IN STEAD OF NEW 400KV SIMHADRI-GAZUWAKA D/C LINE, 400KV GAZUWAKA-VEMAGIRI D/C LINE LILOed AT SIMHADRI

MALKARAM

VTS

NARSARAOPET

LILO OF 400KV NUNNA-VTS DC LINE AT NARSRAO PET

PRESENT 400KV VEMAGIRI-NUNNA AP LINES WILL BE CONNECTED TO NARSARAOPET BY DISCONNECTING FROM NUNNA

SIMHADRI – II TPS EVACUATION

• APTRANSCO had accorded concurrence for Open Access for a period of 5 years.

• Further extension of Open Access would be reviewed w.r.t transmission availability.

• APTRANSCO had informed that the charges had been worked out on ARR. The other

constituents may like to take up the matter with APERC.

• In the 13th & 14th SRPC meeting, it was noted that since the Regulations on the use of

intervening system were likely to be notified by CERC, so there may be not be necessary

for approaching APERC in the present scenario.

• Since Kundankulam & NLC generation has not yet came so if Simhadri II

Generation comes up, SR import capability will be reduced to that

extent.Allocation:AP: 384.4 MWKAR: 176.4 MWKER: 80.9 MWTN: 197.7 MWPondy: 10.6 MWUnallocated: 150 MW

OPERATION OF TALCHER-KOLAR HVDC TRANSMISSION SYSTEM IN GROUND RETURN MODE

SL NO 13 OF TCC

PRDC REPORT EXCERPTS

• GRM OPERATION IS NOT POSSIBLE WITHOUT BLOCKING DEVICES AT LARGE

NUMBER OF LOCATIONS

• BLOCKING DEVICES SHIFT THE DC NEUTRAL CURRENT TO A DIFFERENT

LOCATION

• INVESTIGATE THOROUGHLY ELECTRODE DESIGN AND LOCATION

• GRM TO BE LIMITED TO 150 MW

• BLOCKING DEVICES TO BE PROVIDED AT KOLAR, DB PURA AND BIAL 220KV

STATIONS

• TRIP SINGNAL LOGIC NEEDS MODIFICATION?

CEA Letter 13.08.09

KPTCL Letter 12.11.09

GRM DETAILS

SPS 1000 & 450 APPENDIX-IV

Sudden Flow Reduction due to High ambient temp @ Tal & Low Volt @ Kolar

PROGRESS OF BUS /LINE REACTORS TO BE COMMISSSIONED IN SR

SL NO 14 OF TCC

BUS / LINE REACTORS COMMISSIONING BY SR CONSTITUENTSS. No Bus Name Bus /

Line Reactor

Original Target

Revised Target Date

1* Ramagundam Bus Feb-11 Aug-11

2 Simhadri Bus Nov-10 Mar-11

3 Neyveli – Expn. Bus Apr-11 Feb-11

4 Neyveli TS-II Bus Apr-11 Apr-11

5 Raichur TPS Bus Dec-10 Dec-11

6 Talaguppa Bus Jun-10 Mar-12

7 Guttur Bus Jun-10 Mar-12

8 Nelamangala Bus Jun-10 Mar-12

9 Hoody Bus Jun-10 Mar-12

10 Hyderabad Line Apr-11 Jun-11

11 Kurnool Bus Apr-11 Jun-11

12 Vizag Bus Apr-11 Jun-11

Voltages

• The Bus reactor at NTPC Ramagundam have to be connected to Bus section 1 or 2 instead of Bus section 4

• Guttur Line Reactor to be commissioned in addition to Guttur Bus reactor• Commissioning of Bus Reactor at Kudankulam is essential for ensuring availability of

reliable start up supply

IDENTIFICATION OF STRETCHES IN THE STATE SECTOR WHERE INSULATORS ARE TO BE REPLACED DUE TO

POLLUTION/FOG/SEA WATER

SL NO 16 OF TCC

• Kali Complex in Karnataka.

• Tuticorin Area in Tamil Nadu.

• Coastal Area around Kalpaka in Andhra Pradesh.

• Tripping in Raichur Switch yard due to tracking of Insulators.

• All Constituents to take up replacement of Insulators in prone area as well

as cleaning up of Insulators in Switch yard which are prone to pollution.

HIGHLY SENSITIVE AREA (FREQUENT TRIPPING DUE TO POLLUTION/FOG/SEA WATER)

PCC Meeting

RTPS

TTPS

OPERATIONALISING OF CHIKKODI-KOLHAPUR 220 KV LINE

SL NO 19 OF TCC

• Any of the planning issues relating to Operationalizing of Chikkodi –Kolhapur

220 kV line like seeking exemption from CERC on Inter Regional ATC

computation etc have to be done by SRPC Secretariat directly .

OPERATIONALISING OF CHIKKODI-KOLHAPUR 220 KV LINE

SHUT DOWN OF INTER REGIONAL LINKS

SL NO 20 OF TCC

• Talcher – Kolar S/D to be availed only during July – December along with S/D

of Talcher Stage II Units

• Concurrence of NLDC & the connected region to be taken for planned

outage of IR links

• Annual Outage Plan of IR links to be concurred by NLDC & Concerned region

SHUT DOWN OF INTER REGIONAL LINKS

SHUT DOWN OF 400 KV VIJAYAWADA- NELLORE D/C LINE

SL NO 21 OF TCC

BEFORE S/D AP LETTER AFTER S/D

SCHEDULING OF TALCHER STPS STAGE II

SL NO 23 OF TCC

• Committee recommended that the scheduling of Talcher STPS-II be

continued to done by SRLDC, as the clauses in the IEGC allow the same

and change is not called for.

Scheduling of Talcher Stg II

Scheduling of Talcher stg IIClause 6.4 of IEGC• The national interconnected grid is divided into control areas, like Regional ISTS,

States, DVC, etc. where the load dispatch centre or system operator of the respective control area controls its generation and/or load to maintain its interchange schedule with other control areas whenever required to do so and contributes to frequency regulation of the synchronously operating system. The Load Despatch Centre of a control area therefore is responsible for coordinating the scheduling of a generating station, within the control area, real time monitoring the station’s operation, checking that there is no gaming (gaming is an intentional mis-declaration of a parameter related to commercial mechanism in vogue, in order to make an undue commercial gain) in its availability declaration or in any other way revision of availability declaration and injection schedule, switching instructions, metering and energy accounting, issuance of UI accounts within the control area, collections/disbursement of UI payments, outageplaning etc. .

Control area definition in IEGC:An electrical system bounded by interconnections (tie lines) , metering and telemetry which controls its generation and/or load to maintain its interchange schedule with other control areas whenever required to do so and contributes to frequency regulation of the synchronously operating system.

Why SRLDC ?

• Minimal to and fro co-ordination between RLDC’s and SLDc’s in case of scheduling process involving surrender ,recall etc.

• Less time in to and fro communication

• Right from planning to implementation Talcher II is apart of SR system. Only geographically located in ER system

• SR boundary is upto Talcher AC I/C & Jeypore end of Gazuwaka line

• In analogy to 6.4.2c(iii) of IEGC and SoR of IEGC 2010 in para 41.13, the control area jurisdiction of Talcher-II shall be with SRLDC as more than 50% share is to SR constituents.

• In case of Open Access transaction also the nodal RLDC is that of importing region. On same Anology SRLDC is nodal agency for Talcher-II

• It plays a vital role in the LGBR of SR

• AOH coordination by SRPC OCC

• SPS already in place for eventualities like unit /pole tripping.

• Present system is working fine for over 8 years.

Continued

Extracts from SoR on IEGC dt.18.06.201041. Demarcation of responsibilities( Regulation 6.4 of draft grid code regulations)

41.13 This has been done to ensure certainty in the demarcation of responsibilities.The IPP with their business strategy would decide quantum of power to be soldthrough long term, Medium term and short terms. The connectivity to ISTS andSTU system indicates that generator wants to avail this flexibility. As thecustomer of this type of generator would be in more than one region, RLDCthrough its communication system would be able to coordinate with more thanone regions and also RLDC would be aware of system operating conditions liketransmission constraints, Voltage conditions etc and would be in better positionto ensure that scheduling to various consumers of the IPP is done optimally onday to day basis. Hence, we have decided that if the host State has more than50% share of power, then that generating station shall be under the jurisdictionof SLDC, else it shall be under RLDC. Regarding the apprehension of somestakeholders on frequent toggling of control area jurisdiction, it is clarified thatthe control area jurisdiction is decided on the basis of permanent share of thehost State, which will not change frequently, hence frequent toggling would notbe there. Moreover, initially when one or two units/ stages of the project willcome under commercial operation, the jurisdiction would be more likely withSLDC depending on the share of the host State. On the progressivecommissioning of units/ stages, it is more likely that the share of the host Statewould decrease and become equal to or less than 50%, resulting in shifting ofcontrol area jurisdiction from SLDC to RLDC. In future also, when more unitsare commissioned, it is more likely that the control area jurisdiction will remainwith RLDC and there would not be frequent toggling. Regarding theapprehension of some stakeholders about the problem in metering during dueto this toggling, it is clarified that the interface meters at CTU and STUinterfaces shall be installed as per the CEA regulations on metering. It isfurther clarified that as switchover of control area would be done expeditiouslyafter the change w.e.f. the next billing period i.e. next week UI accounting thereshall not be any problem in energy accounting as anticipated by SLDC,Maharashtra. For inter-State energy accounting, it shall be as per CERC ABTmechanism.

LOW FREQUENCY OPERATION

SL NO 24.3 OF TCC

SCH VS DRW ABC & 12%

FLOW GATE VIOLATION

FREQUENCY SPECTRUM OF SOUTHERN REGIONAL GRID(APRIL’09 TO 27th APR’11)

MONTH FREQUENCY (Hz) % OF TIME WHEN FREQUECY WAS BETWEEN

MAX MIN AVG < 48.5 HZ 48.5 TO 49.0 HZ

49.0 TO 49.2 HZ

49.2 TO 49.5 HZ

49.5 TO 50.0 HZ

50.0 TO 50.3 HZ > 50.3 HZ

Apr-09 50.93 48.53 49.39 0 6.7 13.88 39.66 36.65 3.68 0.44May-09 51.03 48.56 49.72 0 1.86 2.52 18.32 51.31 21.41 4.58Jun-09 50.41 48.97 49.57 0 1.35 3.8 32.5 51.91 9.64 0.8Jul-09 50.48 49.04 49.66 0 0.08 0.96 21.11 65.01 11.74 1.1

Aug-09 50.25 48.98 49.52 0 0.77 3.15 34.34 58.18 3.31 0.25Sep-09 50.68 48.82 49.72 0 0.02 0.32 11.53 69.93 15.82 2.38Oct-09 50.85 48.57 49.53 0 1.57 4.23 37.14 47.45 8.21 1.4Nov-09 50.57 48.58 49.77 0 0.06 0.19 4.35 76.25 18.12 1.02Dec-09 50.38 49.2 49.75 0 0.04 0.15 7.48 70.9 20.7 0.73Jan-10 50.47 49.18 49.76 0 0.06 0.24 6.34 74.6 17.42 1.34Feb-10 50.27 49.08 49.59 0 0.46 2.39 20.32 71.33 5.29 0.23Mar-10 50.2 48.78 49.39 0 2.91 9.07 50.78 35.53 1.59 0.12Apr-10 50.56 48.57 49.45 0 2.83 7.19 40.91 45.55 3.27 0.24

 

MAX MIN AVG < 48.5 HZ 48.5 TO 49.0 HZ

49.0 TO 49.2 HZ

49.2 TO 49.5 HZ

49.5 TO 50.0 HZ

50.0 TO 50.2 HZ > 50.2 HZ

May-10 50.88 48.58 49.84 0 0.28 0.25 2.45 71.97 19.26 5.79Jun-10 50.67 48.56 49.81 0 0.83 1.04 3.88 73.81 14.52 5.92Jul-10 50.69 48.92 49.85 0 0.03 0.16 1.27 82.36 12.13 4.05

Aug-10 50.54 48.7 49.81 0 0.04 0.17 3.52 77.64 13.39 5.24Sep-10 50.57 48.84 49.92 0 0.06 0.25 1.33 64.25 26.49 7.62Oct-10 50.66 49.24 49.91 0 0 0 0.21 71.15 21.47 7.17Nov-10 50.97 48.88 49.99 0 0.03 0.07 0.54 55.03 28.53 15.8Dec-10 50.97 48.96 49.92 0 0 0.03 0.75 67.24 22.33 9.65Jan-11 50.99 49.22 49.82 0 0 0 1.43 79.97 15.04 3.56Feb-11 50.93 48.83 49.7 0 0.07 0.42 7.91 85.73 4.95 0.92Mar-11 50.82 48.81 49.61 0 0.17 0.78 18.27 78.63 1.77 0.38Apr-11 50.86 48.81 49.65 0.00 0.33 1.46 20.10 69.77 6.97 1.37

HIGH FREQUENCY OPERATION

SL NO 24.4 OF TCC

GRAPHS & MSGs

Staggering of loads in a co-ordinated manner have to be done during change over by Constituents. Staggering to be reviewed

Major Events

SL NO 24.6 OF TCC

MAJOR EVENTS

Hydro Availability

SL NO 24.7 OF TCC

Reservoir Position

LEVEL IN MTS

Full Reservoir

Level

Last 9 Years Corresponding Monthly

Average Level

LEVEL LEVEL

Last 9 Years

Corresponding

Monthly Average

MU's

ENERGY ENERGY

Shortfall (-ve) / Rise (+ve) IN MU w.r.t Last

Year Same Day

Shortfall (-ve) / Rise (+ve) w.r.t 9 years

Corresponding Monthly Average

27/Apr/2010

27/Apr/2011

27/Apr/2010

27/Apr/2011 April April MU % MU %

JALAPUT 838.40 834.61 822.17 835.24 246 83 402 319 384 156 63

SRISAILAM 270.70 263.65 247.86 247.53 --- --- --- --- --- --- ---

N’SAGAR 179.90 164.82 157.34 168.71 --- --- --- --- --- --- ---

LINGANMAKKI 554.50 549.29 540.21 541.75 1143 1287 1515 228 18 372 32

SUPA 564.00 546.38 527.89 529.21 788 748 805 57 8 17 2

IDUKKI 732.43 721.53 708.94 713.50 601 595 837 242 41 236 39

KAKKI 969.80 974.23 958.89 959.90 318 333 350 17 5 32 10

NILGIRIS --- --- --- --- 534 491 191 -300 -61 -343 -64

TOTAL 3631 3537 4100 563 16 470 13

Reservoir Level Graph

10.0

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90.0

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2007-08 2008-09 2009-10 2010-11

Reservoir levels in % as on last day of the month for the years 2007-08, 08-09, 09-10,10-11

Reservoir levels in Mu as on last day of the month for the years 2007-08, 08-09, 09-10,10-11

0

2000

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12000

14000

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2007-08 2008-09 2009-10 2010-11

4100 MU on 27th Apr 2011

31.99% on 27th Apr 2011

Grid Voltage

SL NO 24.8 OF TCC

Vemagiri MOMVoltages

Installation of Bus reactor at Vemagiri complex may be considered to address the high voltage problem at vemagiri

Vemagiri Tap Change

VAR Absorption/Injection by Generators within Capability Limits

SL NO 24.9 OF TCC

Graphs

Operation of Talcher – Kolar HVDC Link in extended mode of operation

SL NO 27 OF TCC

Report

CRISIS MANAGEMENT PLAN

SL NO D 2.1 OF TCC

PROGRESS

Closing of 220/230 kV Inter State Lines

Supp Agenda 2 Point 4 OF TCC

Sr.No. Date Meeting Point Discussed1 06-Jun-08 6th TCC RADIALISATION OF CHIKKODI ON N-E-W GRID THROUGH CHIKKODI – KOLHAPUR LINE2 13-Aug-08 28th OCC RADIALISATION OF CHIKKODI ON N-E-W GRID THROUGH CHIKKODI – KOLHAPUR LINE3 18-Oct-08 7th TCC RADIALISATION OF CHIKKODI ON N-E-W GRID THROUGH CHIKKODI – KOLHAPUR LINE4 11-Nov-08 29th OCC STATUS REVIEW ON RADIALISATION OF CHIKKODI ON N-E-W GRID THROUGH CHIKKODI –

KOLHAPUR LINE (DISCUSSED IN 28TH OCCM)5 10-Dec-08 30th OCC STATUS REVIEW ON RADIALISATION OF CHIKKODI ON N-E-W GRID THROUGH CHIKKODI –

KOLHAPUR LINE (DISCUSSED IN 29TH OCCM)6 05-Mar-09 8th TCC RADIALISATION OF CHIKKODI ON N-E-W GRID THROUGH CHIKKODI – KOLHAPUR LINE7 10-Jul-09 37th OCC OUTAGE OF 220KV CHITTOR - THIRUVALEM LINE SINCE 10TH FEB 09 – PROGRAMME FOR

PUTTING LINE BACK INTO SERVICE8 10-Jul-09 37th OCC CLOSING OF SULURPET-GUMMDIPOONDI FOR REDUCING OVERLOADING OF NEYVELI - S P

BUDUR LINE9 09-Sep-09 39th OCC PROLONGED OUTAGE OF CHITTOOR-THIRUVELAM SINCE 10TH FEB 09 15:20 HRS10 13-Oct-09 40th OCC PROLONGED OUTAGE OF CHITTOR – THIRUVALEM LINE SINCE 10TH FEB 09 15:20 HRS11 12-Nov-09 41st OCC PROLONGED OUTAGE OF CHITTOR – THIRUVALEM LINE SINCE 10TH FEB 09 15:20 HRS12 12-Nov-09 41st OCC PROLONGED OUTAGE OF SULURPET –GUMMUDIPOONIDI SINCE 24 /10/09 22:40 HRS13 11-Dec-09 42nd OCC TN TO EXPEDITE SYNCHRONISATION OF CHITTOR-THIRUVALEM LINE14 11-Dec-09 42nd OCC REVIEW OF SULURPET – GUMMIDIPOONDI O/L TRIPPING SETTINGS15 08-Jan-10 43rd OCC TN TO EXPEDITE SYNCHRONISATION OF CHITTOR-THIRUVALEM LINE16 08-Jan-10 43rd OCC REVIEW OF SULURPET – GUMMIDIPOONDI O/L TRIPPING SETTINGS 17 03-Feb-10 8th PCC TN TO EXPEDITE SYNCHRONISATION OF SULURPET – GUMMIDIPOONDI & CHITTOR-

THIRUVALEM LINE18 11-Feb-10 44th OCC TN TO EXPEDITE SYNCHRONISATION OF CHITTOR-THIRUVALEM LINE19 11-Feb-10 44th OCC REVIEW OF SULURPET – GUMMIDIPOONDI O/L TRIPPING SETTINGS 20 09-Mar-10 45th OCC TN TO EXPEDITE SYNCHRONISATION OF CHITTOR-THIRUVALEM LINE21 25-Jun-10 48th OCC TN TO EXPEDITE SYNCHRONISATION OF CHITTOR-THIRUVALEM LINE22 14-Jul-10 49th OCC CHITTOR-THIRUVALAM LINE CHARGED ON 28.06.1023 08-Oct-10 52nd OCC TN TO EXPEDITE SYNCHRONISATION OF SULURPET – GUMMIDIPOONDI LINE24 10-Dec-10 54th OCC SYNCHRONISED THE 230 kV SULURPET – GUMMIDIPOONDI LINE ON 04.12.201025 10-Jan-11 55th OCC RESTRICT THE LINE LOADING TO < 100 MW ON SULURPET – GUMMIDIPOONDI LINE26 08-Feb-11 56th OCC TN TO EXPEDITE SYNCHRONISATION OF SULURPET – GUMMIDIPOONDI LINE27 09-Mar-11 57th OCC TN TO EXPEDITE SYNCHRONISATION OF SULURPET – GUMMIDIPOONDI & CHITTOR-

THIRUVALEM LINE

VARIOUS MEETINGS WHERE ISSUE OF CLOSING AP-TN, AND INTER REGIONA LINKS WERE TAKEN UP

Operation of 400 kV Lines Upto SIL derived steady State limit

Supp Agenda 2 Point 2 OF TCC

PPT REPORT

Automatic Data Reading (AMR) /Collection

• To avoid all the data related delays and fulfill the deadlines set by IEGC,

SRLDC had proposed to adopt AMR scheme in SR. In SR, there are about 600

SEMs installed in about 100 locations. Scheme may be implemented by PGCIL

at an estimated cost of about Rs. 1.5 Crores which can be recovered through

tariff in the same way as the cost of SEMs is being recovered.

• Outcome of the 14th commercial Sub – Committee meeting

Committee in principle agreed the proposal.

SRLDC suggested that cost may be recovered through tariff.

Proposal for automatic data reading

(AMR) /collection (to be implemented by POWERGRID):To avoid delays in SEM data transmission to SRLDC it is proposed to adopt AMR scheme

in SR at an estimated cost of Rs.1.5Crores.Schematic representation of AMR is as below.

Hardware required for each location:Modem-1 no, Data Concentrator Unit-1 noLocal Computer- 1 no., Remote Computer at SRLDC – 1 no. Cost of Communication on GPRS mode : as per actual.

Bill Of QuantitiesSl. No. Description

Qty. * Unit

Rate Rs **

Amount Rs.

A For S/S with meters located in Control Room (Aprox. 120 S/S) #        

1)All required hardwares i.e. Meter Interfacing Unit/Protocol Comnverter/Optical Probe/ Connectors / Cable for data transfer between meters and Data Concentrator etc.

700 Per SEM 6602 4621400

2) Data Concentrator Unit/Data Accumulator (one No. at each location) 120 No. 22000 2640000

3) GPRS Modem (One No. at each location) 120 No. 6500 780000

B Common for total Scheme        

1)Meter Data Acquisition & Analysis software (For all Data Concentrator Units/Data Accumulators (Approx. 120 Nos.) and Servers at SRLDC (2 Nos.).

1Lumpsu

m1000000 1000000

2)Training to personnel posted at all S/S where scheme will be commisioned and SRLDC. (10 Trainings with a batch of 20-30 participants)

10 No.   200000

3) Installation, Testing & Commissioning/Customization cost 700 Per SEM 2112 1478400

C CENTRAL LOCATION (AT SRLDC & 6 SLDCs)        

1) Central server (Including cost of required RDBMS & OS) 7 No. 175000 1225000

2) UPS (2 KVA) 7 No. 30000 210000

3) GPRS/GSM Modems 7 No. 6500 45500

D Wararnty / AMC        

1) Warranty for 1 year     NIL  

2) AMC for 1st year after Warranty 700 Per SEM 806 564480

3) AMC for 2nd year after Warranty 800 Per SEM 853 682667

4) AMC for 3rd year after Warranty 900 Per SEM 894 804414

5) AMC for 4th year after Warranty 1000 Per SEM 929 929032

Total 15180893

Minutes of 14th NRPC meeting reg. AMR scheme implementation

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