open access experiances and way-ahead v k agrawal, general manager, srldc workshop on grid security...

OPEN ACCESS EXPERIANCES AND

WAY-AHEAD

V K Agrawal,General Manager,SRLDC

WORKSHOP ON GRID SECURITY AND MANAGEMENT

28th and 29th April, 2008

OPEN ACCESS: OPEN ACCESS: DEFINITION AS PER ELECTRICITY ACT, 2003DEFINITION AS PER ELECTRICITY ACT, 2003

Section 2 (47)Section 2 (47)

““Open access” means the non-discriminatory Open access” means the non-discriminatory provision for the use of transmission lines or provision for the use of transmission lines or distribution system or associated facilities with such distribution system or associated facilities with such lines or system by any licensee or consumer or a lines or system by any licensee or consumer or a person engaged in generation in accordance with person engaged in generation in accordance with the regulations specified by the Appropriate the regulations specified by the Appropriate Commission;”Commission;”

CERC Open Access Regulations, CERC Open Access Regulations, 20082008

3.3. Subject to any other regulations specified by the Subject to any other regulations specified by the Commission, the long-term customer shall have first Commission, the long-term customer shall have first priority for using the inter-State transmission system priority for using the inter-State transmission system for the designated use. These Regulations shall apply for the designated use. These Regulations shall apply for utilization of surplus capacity available thereafter for utilization of surplus capacity available thereafter on the inter-State transmission system by virtue of-on the inter-State transmission system by virtue of-

(a)(a) Inherent design margins; Inherent design margins;

(b) Margins available due to variations in power flows; (b) Margins available due to variations in power flows;

(c ) Margins available due to in-built spare transmission (c ) Margins available due to in-built spare transmission capacity created to cater to future load capacity created to cater to future load

growth or growth or generation addition: generation addition:


Effective 01.04.2008Effective 01.04.2008 Regulations cover only Short-term Regulations cover only Short-term

Open AccessOpen Access Transactions categorized as Bilateral Transactions categorized as Bilateral

and Collective (through PX)and Collective (through PX) Earlier Products of Short-Term retained Earlier Products of Short-Term retained

under Bilateral Transactionsunder Bilateral Transactions Nodal AgencyNodal Agency

Bilateral : RLDCsBilateral : RLDCs Collective : NLDCCollective : NLDC


Transmission Charges moved from “Contract Path” Transmission Charges moved from “Contract Path” to “Point of Connection”to “Point of Connection”

Both Buyers and Sellers of Collective transactions Both Buyers and Sellers of Collective transactions to bear transmission charges and absorb to bear transmission charges and absorb transmission lossestransmission losses

Inter-Regional links -No Separate treatment. Inter-Regional links -No Separate treatment. Emphasis on “Scheduling” rather than Emphasis on “Scheduling” rather than

“Reservation”“Reservation” SLDC consent mandated along with applicationSLDC consent mandated along with application In case of Congestion – e-Bidding without Price CapIn case of Congestion – e-Bidding without Price Cap Exit Option provided with payment of up to 5 days Exit Option provided with payment of up to 5 days

open access charges.open access charges. Moving towards empowerment of SLDCsMoving towards empowerment of SLDCs

Regulation 2004 of CERC Regulations on Short-Term Open Access

Open Access Duration - Up to One year maximum -single application possible

ST Rate - in Rs/MW/Day - Min. Charges for one day

Transmission Charges a. Intra Regional – 25% of Long Term Charges b. Inter Regional – 25% of Long Term Charges

Operating Charges a. Application fee – Rs. 5000/- b. Scheduling Charges – Rs. 3000/day for each RLDC involved – Rs. 3000/day for each SLDC involved c. Handling &Service Charges - 2% of total charges

(06.05.2004 to 31.03.2005)

Regulation 2004 (Amendment 2005)of CERC Regulations Regulation 2004 (Amendment 2005)of CERC Regulations on Short Term Open Accesson Short Term Open Access

Open Access Duration - Up to three months -single application possible

ST Rate - in Rs/MW/Day - Charges as per continuous block of up to 6 hours, 12 hours, and more than 12 hoursTransmission Charges a. Intra Regional – 25% of Long Term Charges b. Inter Regional – 50% of Long Term ChargesOperating Charges a. Application fee – Rs. 5000/- b. Scheduling Charges – Rs. 3000/day for each RLDC involved – Rs. 1000/day for each RLDC involved c. Handling &Service Charges - Nil

((01.04.2005 to 31.03.2008)01.04.2005 to 31.03.2008)

Regulation 2008 of CERC RegulationsRegulation 2008 of CERC Regulationson Short Term Open Accesson Short Term Open Access

Open Access DurationOpen Access Duration - Bilateral -Up to 3 months separate application for each month- Bilateral -Up to 3 months separate application for each month- Collective: -Only Day ahead Collective: -Only Day ahead

ST RateST Rate - in Rs/MWh - in Rs/MWh - Based on Scheduled Energy - Based on Scheduled Energy

Transmission ChargesTransmission Charges Bilateral:Bilateral:

Rs.30/MWh – intra- regionalRs.30/MWh – intra- regionalRs.60/MWh – Between adjacent regionsRs.60/MWh – Between adjacent regionsRs90/MWh – Wheeling through one or more regionRs90/MWh – Wheeling through one or more region

Collective Transactions (Px):Collective Transactions (Px):-Rs. 30/MWh for each point of injection and drawal-Rs. 30/MWh for each point of injection and drawal

(From (From 01.04.2008)01.04.2008)

Regulation 2008 of CERC RegulationsRegulation 2008 of CERC Regulationson Short Term Open Accesson Short Term Open Access

Operating Charges Bilateral:Bilateral: a. Application fee – Rs. 5000/-a. Application fee – Rs. 5000/- b. Scheduling Charges b. Scheduling Charges – – Rs. 2000/day for each RLDC involvedRs. 2000/day for each RLDC involved – – Rs. 2000/day for each SLDC involvedRs. 2000/day for each SLDC involved

c. Handling & Service Charges –Nilc. Handling & Service Charges –Nil

Collective Transactions:Collective Transactions:a. Application fee – Rs. 5000/-a. Application fee – Rs. 5000/- b. Scheduling Charges b. Scheduling Charges – – Rs. 5000/day to NLDC for each State involved ; Rs. 5000/day to NLDC for each State involved ; -NLDC to Share with RLDCs-NLDC to Share with RLDCs

Contd …Contd …

Comparison of CERC Regulations on Short-Term Open Access Comparison of CERC Regulations on Short-Term Open Access (Regulation 2004, Amendment 2005 and Regulations 2008)(Regulation 2004, Amendment 2005 and Regulations 2008)

S. S. No.No.

Old RegulationsOld Regulations(06.05.2004 to 31.03.2005)(06.05.2004 to 31.03.2005)

Amended RegulationsAmended Regulations (w.e.f. 01.04.2005 to (w.e.f. 01.04.2005 to

31.03.2008)31.03.2008)

Regulations, 2008 Regulations, 2008 (w.e.f. 01.04.2008)(w.e.f. 01.04.2008)

1.1. Open Access Duration - Up to One year maximum- single application possible

Open Access Duration - Up to Three Months

max. - single application

possible

Open Access DurationBilateral-Up to 3 months - separate application for each

month- Collective:- Only Day ahead

2.2.

ST Rate - in Rs/MW/Day - Min. Charges for one day

ST Rate- in Rs./MW/Day-Charges as per continuous

block of up to 6 hours, 12 hours, and more than 12 hours

Rate -in Rs/MWh- Based on Scheduled Energy


S. S. NNo.o.



31.03.2008)31.03.2008)


3.3.

Transmission Charges a. Intra Regional – 25% of Long Term Charges b. Inter Regional – 25% of Long Term Charges

Transmission Charges a. Intra Regional – 25% of

Long Term Charges b. Inter-Regional - 50% of Long Term Charges

Transmission Charges: Bilateral:- Rs.30/MWh – intra- regional- Rs.60/MWh – Between adjacent regions- Rs90/MWh – Wheeling through one or

more regionCollective Transactions (Px):-Rs. 30/MWh for each point of injection and

drawal

4.4.

Operating Charges a. Application fee – Rs. 5000/- b. Scheduling Charges – Rs. 3000/day for each

RLDC involved– Rs. 3000/day for each SLDC

involved c. Handling &Service

Charges - 2% of total charges

Operating Charges a. Application fee – Rs.

5000/- b. Scheduling Charges – Rs. 3000/day for each

RLDC involved– Rs. 1000/day for each

RLDC involved c. Handling & Service

Charges – Nil

Operating Charges Bilateral: a. Application fee – Rs. 5000/- b. Scheduling Charges – Rs. 2000/day for each RLDC and

SLDC involved c. Handling & Service Charges -NilCollective Transactions:a. Application fee – Rs. 5000/- b. Scheduling Charges – Rs. 5000/day to NLDC for each State

involved ; -NLDC to Share with RLDCs

UI vs STOA market UI vs STOA market (All regions)(All regions)

5% UI market

3% STOA market

100% power market

92% long term market

All India basis

778

3938

5933

9560

0

1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

No.

Of T

rans

actio

ns

2004-05 2005-06 2006-07 2007-08YEAR

DETAILS OF TRADE UNDER SHORT TERM OPEN ACCESS

16.64 Bu

22.53 Bu

23.60 Bu

28.83 Bu

No. of Transactions

Energy in Billion Units

737

845886

0

100

200

300

400

500

600

700

800

900

No.

Of T

rans

actio

ns

2005-06 2006-07 2007-08YEAR

DETAILS OF ADVNCE AND FCFS APPROVED STOA TRANSACTIONS

19.79 Bu

18.49 Bu

23.46 Bu

No. of Transactions


3201

5088

8674

0

1000

2000

3000

4000

5000

6000

7000

8000

9000

No.

Of T

rans

actio

ns

2005-06 2006-07 2007-08YEAR

DETAILS OF DAY AHEAD AND SAME DAY APPROVED STOA TRANSACTIONS

2.74 Bu

5.11 Bu

6.37 Bu

No. of Transactions


STOA – EXPERIANCES Applications Processed Applications Processed (Since Beginning) > 20,000 No.(Since Beginning) > 20,000 No. Volume (Approved Energy)Volume (Approved Energy)

(Since Beginning) > 90BUs(Since Beginning) > 90BUs Applications Approved > 95 %Applications Approved > 95 %

Refusal/Non-consent by SLDCs Refusal/Non-consent by SLDCs > 3 - 4%> 3 - 4%

Refusal due to system constraints Refusal due to system constraints < 0.5 %< 0.5 %

STOA – EXPERIANCES Transactions between extreme corners of the countryTransactions between extreme corners of the country

RGCCPP ( Kayamkulam) to PSEBRGCCPP ( Kayamkulam) to PSEBArunachal Pradesh(NER) to PSEBArunachal Pradesh(NER) to PSEBTNEB to J&KTNEB to J&K

Large number of Captive Generating plants used Large number of Captive Generating plants used STOA and helped in enhancing the power availability STOA and helped in enhancing the power availability in grid. in grid.

Ugar Sugars (KAR) - JAIPUR (RAJASTHAN)Ugar Sugars (KAR) - JAIPUR (RAJASTHAN)Godavari Sugars (KAR) - MSEDCLGodavari Sugars (KAR) - MSEDCLNCS Sugar(ANDHARA) – GUVNLNCS Sugar(ANDHARA) – GUVNL

Indorama ( MAH) – APPCC ( ANDHRA)Indorama ( MAH) – APPCC ( ANDHRA)

STOA – EXPERIANCES Due to High demand in the regions, the costly power Due to High demand in the regions, the costly power

has been traded through STOAhas been traded through STOA

RGCCPP ( Kayamkulam) (NAPTHA) to PSEBRGCCPP ( Kayamkulam) (NAPTHA) to PSEBBSES(KERALA) (DIESEL) to NDMC (DELHI)BSES(KERALA) (DIESEL) to NDMC (DELHI)

Diversity being gainfully utilised by Market players Diversity being gainfully utilised by Market players under STOAunder STOA

Generators PLF has also increased.Generators PLF has also increased.

IssuesIssues Skewed load – generation levelsSkewed load – generation levels Increased line loadingIncreased line loading Consents by STU/SLDC for injection Consents by STU/SLDC for injection

of power by embedded customersof power by embedded customers TelemetryTelemetry MeteringMetering SchedulingScheduling PPAsPPAs

Empowering SLDCsEmpowering SLDCs UI Settlement of Intra state UI Settlement of Intra state

entitiesentities Before the Implementation of Open Before the Implementation of Open

Access Regulations 2008, for Access Regulations 2008, for deviations Various STU/SLDCs are deviations Various STU/SLDCs are charging differently for embedded charging differently for embedded customers. In the New Open Access customers. In the New Open Access Regulations the issue is addressed Regulations the issue is addressed

Functional Autonomy of SLDC Functional Autonomy of SLDC

Typical Approvals- Captive Power PlantsTypical Approvals- Captive Power Plants Captive Power PlantCaptive Power Plant Quantum( MW)Quantum( MW)

Eastern RegionEastern RegionNBVL(OPTCL)NBVL(OPTCL) 2727

SAIL-DSP(DVC)SAIL-DSP(DVC) 2020

TISCO(DVC)TISCO(DVC) 6060

Bhushan SteelBhushan Steel 2525

J.P Cement (Rewa)J.P Cement (Rewa) 55

Western RegionWestern RegionIndo Rama syntheticsIndo Rama synthetics 2222

PSKLPSKL 10-3010-30

Southern Region Southern Region

Renuka Sugar Renuka Sugar 2525

Vishwanath SugarVishwanath Sugar 7.57.5

Godavari SugarGodavari Sugar 2525

Ugar SugarUgar Sugar 2525

Jindal SteelJindal Steel 200200

Nav Bharat Nav Bharat 5050

NCS SugarNCS Sugar 1313

TYPICALTYPICALSTOA CASE - 1STOA CASE - 1

APTRANSCO to MPSEB

100 MW for One day from 0000 to 0600 hrs.

APTRANSCO - MPSEB THROUGH NVVNL APTRANSCO - MPSEB THROUGH NVVNL (0000 HRS – 0600 HRS (0000 HRS – 0600 HRS ) ) 100100 MW AT INJECTION POINT MW AT INJECTION POINT

for 1 dayfor 1 day

INJECTING UTILITY APTRANSCO

CUSTOMER: NVVNL

DRAWEE UTILITY MPSEB

CAPACITY APPROVED 100 MW

DAILY PERIOD 0000-0600HRSAP

WR GRID

MP

HVDC BACK TO BACK AT

BHADRWATHI IN WR

INTERVENING REGIONAL LINK

1. SR-WR

TRADER: NVVNL

APTRANSCO - MPSEB THROUGH NVVNL APTRANSCO - MPSEB THROUGH NVVNL (0000 HRS – 0600 HRS (0000 HRS – 0600 HRS ) ) 100100 MW AT INJECTION POINTMW AT INJECTION POINT

for 1 day for 1 day

EXPORT AT AP 100 MW

AT SR PERIPHERY 96.9 MW

MP RECIEVES 93.0 MW

LOSSES IN SR 3.12%

LOSSES IN WR 4%

TOTAL LOSSES FOR

TRANSACTION 7.0 MW

AP

WR GRID

MP


BHADRWATHI IN WR

CTU

APTRANSCO - MPSEB THROUGH NVVNL APTRANSCO - MPSEB THROUGH NVVNL (0000 HRS – 0600 HRS (0000 HRS – 0600 HRS ) ) 100100 MW AT INJECTION POINTMW AT INJECTION POINT

for 1 day for 1 day

APPLICATION PROCESSING FEE

Rs 5000 PER TRANSACTION

TRANSMISSION CHARGES PER MW PER DAY

1. Rs 700.91 FOR CTU-SR

2. Rs 881.49 FOR SR-WR LINK

3. Rs 339.98 FOR CTU-WRTOTAL TRANSMISSION CHARGE

PER UNIT 34.53Ps/.

SCHEDULING CHARGES PER DAY

1. Rs 3000 FOR SRLDC

2. Rs 3000 FOR WRLDC

AP

WR GRID

MP


BHADRWATHI IN WR

Payments as per Regulation 2004 of CERC

APTRANSCO - MPSEB THROUGH NVVNL APTRANSCO - MPSEB THROUGH NVVNL (0000 HRS – 0600 HRS (0000 HRS – 0600 HRS ) ) 100100 MW AT INJECTION POINT for 1 MW AT INJECTION POINT for 1

dayday






3. Rs 339.98 FOR CTU-WRTOTAL TRANSMISSION CHARGE

PER UNIT 13.52Ps/.




AP

WR GRID

MP


BHADRWATHI IN WR

Payments as per Regulation 2004 Amendment 2005) of CERC

APTRANSCO - MPSEB THROUGH NVVNL APTRANSCO - MPSEB THROUGH NVVNL (0000 HRS – 0600 HRS (0000 HRS – 0600 HRS ) ) 100100 MW AT INJECTION POINT for 1 MW AT INJECTION POINT for 1

dayday



TRANSMISSION CHARGES

1. Rs 90 /MWH FOR WHEELING

TOTAL TRANSMISSION CHARGE PER UNIT 7.83Ps/.




AP

WR GRID

MP


BHADRWATHI IN WR





31.03.2008)31.03.2008)


Total STOA Charges Paisa/Unit

34.53


13.52


7.83

TYPICALTYPICALSTOA CASE - 2 STOA CASE - 2

KAYAMKULAM RGCCPP, NTPC to PSEB

150 MW for 31 days on Round the Clock basis

SR

STOA OF KSEB(RGCCPP) - PSEB 0000 HRS – 2400 HRSSTOA OF KSEB(RGCCPP) - PSEB 0000 HRS – 2400 HRS150MW AT RGCCPP EXBUS POINT for 31 days150MW AT RGCCPP EXBUS POINT for 31 days

KERALA

INJECTING UTILITY KYCPP,KSEB

TRADER: NVVNL

KAYAMKULAM RGCCPP NTPC)

DRAWEE UTILITY PSEB

CAPACITY APPROVED 150 MW

DAILY PERIOD 0000-2400 HRS

CUSTOMER: NVVNL

WR

NRPSEB

HVDC BACK TO BACK AT VINDHYACHAL IN WR

HVDC BACK TO BACK AT BHADRWATHI IN WR

INTERVENING REGION WR

INTERVENING REGIONAL LINK

SR-WR

WR-NRINTERVENING STATE TRANSMISSION UTILITY KSEB

SR

STOA OF KSEB(RGCCPP) - PSEB 0000 HRS – 2400 HRSSTOA OF KSEB(RGCCPP) - PSEB 0000 HRS – 2400 HRS150MW AT RGCCPP EXBUS POINT for 31 days150MW AT RGCCPP EXBUS POINT for 31 days

KERALA

KAYAMKULAM RGCCPP(NTPC)

WR

NRPSEB



EXPORT AT RGCCPP BUS 150 MW

PSEB RECIEVES 134.4 MW

AT KERALA PERIPHERY 148.9 MWLOSSES IN KERALA 0.75%

LOSSES IN SR 3.12%

AT SR-WR PERIPHERY 144.3 MW

LOSSES IN WR 4.0% AT WR-NR PERIPHERY 138.5 MW

LOSSES IN NR 3.0%

SR

STOA OF KSEB(RGCCPP) - PSEB 0000 HRS – 2400 HRS150MW AT RGCCPP EXBUS POINT for 31 days

KERALA


WR

NRPSEB








3. Rs 339.98 FOR CTU-WR

4. Rs 233.32 FOR WR-NR LINK

5. Rs 649.86 FOR CTU-NR

6. Rs 672.07 FOR KSEB




3. Rs 3000 FOR NRLDC

4. Rs 3000 FOR KSEB

TOTAL TRANSMISSION CHARGES PER UNIT 15.12Ps


SR

KERALA


WR

NRHVDC BACK TO BACK AT

VINDHYACHAL IN WR





1. Rs 843 FOR CTU-SR

2. Rs 1311 FOR SR-WR LINK

3. Rs 357 FOR CTU-WR

4. Rs 600 FOR WR-NR LINK

5. Rs 594 FOR CTU-NR

6. Rs 672.07 FOR KSEB





4. Rs 1000 FOR KSEB


Payments as per Regulation 2004 Amendment 2005) of CERC


PSEB

SR

KERALA


WR

NRPSEB





TRANSMISSION CHARGES PER MWHR

1. Rs 90 FOR Bilateral Wheeling

through one or more region

1. Rs 30 FOR KSEB





4. Rs 2000 FOR KSEB







31.03.2008)31.03.2008)



15.12


18.5


12.2

open access experiances and way-ahead v k agrawal, general manager, srldc workshop on grid security...

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