OPEN ACCESS EXPERIENCES and WAY AHEAD

OPEN ACCESS EXPERIENCES and

WAY AHEAD

V K Agrawal,General ManagerSRLDC

WORKSHOP ON GRID SECURITY AND MANAGEMENT

28th April 2008

OPEN ACCESS EXPERIENCES OPEN ACCESS EXPERIENCES AND WAY AHEADAND WAY AHEAD

Open Access:

Why and What? A Journey … Success Story Issues Way ahead

INSTALLED CAPACITY

NORTHERN :- 37,486 MW

EASTERN :- 19,416 MW

SOUTHERN :- 39,175 MW

WESTERN :- 42,420 MW

NORTH-EASTERN :- 2,506 MW

TOTAL 141,003 MW

SOUTHERN REGION

WESTERNREGION

EASTERN REGION

NORTHERN REGION

NORTH-EASTERN REGION

REGIONAL GRIDS

Coal

Hydro

ENERGY RESOURCE MAP

Source:

Powerline

(Siemens Ad),

Oct-2006

HYDRO RESOURCES

COAL BELT

MUMBAI

DELHI

CHENNAIBANGALORE

KOLKATTA

RESOURCES ARE FAR AWAY FROM LOAD CENTERS.

NECESSITATES LONG TRANSMISSION LINKS FOR EVACUATION

AREAS SHOWN ARE APPROXIMATE AND INDICATIVE

Spatial Distribution

Of Load

Diversity details of Regional Grids in India

REGION REMARKS

NORTHERN REGION Deficit RegionHighly weather sensitive load

NORTH EASTERN REGION Very low loadHigh hydro potential

EASTERN REGION Low loadHigh coal reservesPit head base load plants

WESTERN REGION Industrial load and agricultural loadHighly Deficit Region

SOUTHERN REGION High load (40% agricultural load)Monsoon dependent hydro

DUE TO THE HIGH LOAD AND LOW GENERATION IN

NORTHERN, WESTERN AND SOUTHERN REGIONS VIS-

À-VIS LOW LOAD AND HIGH GENERATION IN

EASTERN AND NORTH EASTERN REGIONS, THE

PLANNING, CONSTRUCTION, AND OPERATION OF THE

TRANSMISSION NETWORK GETS IMPORTANCE IN

TRANSFERRING THE POWER ACROSS THE LENGTH

AND BREADTH OF THE COUNTRY.

MILESTONES : POWER SECTORMILESTONES : POWER SECTOR

19891989 Unbundling of CS transmission from generation Unbundling of CS transmission from generation

(Formation of National Power Transmission (Formation of National Power Transmission

CorporationCorporation

.. now POWERGRID).. now POWERGRID)

19911991 Generation opened to Private Sector Generation opened to Private Sector

1995 Unbundling process started in States1995 Unbundling process started in States

-State unbundled into Gencos, Transco & Discom-State unbundled into Gencos, Transco & Discom

19981998 Electricity (Amendment) Act 1998 Electricity (Amendment) Act 1998

1998 Electricity Regulatory Commission Act passed1998 Electricity Regulatory Commission Act passed

2003 Electricity Act 2003 enacted in June 20032003 Electricity Act 2003 enacted in June 2003

20042004 CERC Order and Regulations on OPEN ACCESS CERC Order and Regulations on OPEN ACCESS

OPEN ACCESS: DEFINITION AS PER ELECTRICITY ACT, 2003

Section 2 (47) “Open access” means the non-discriminatory provision

for the use of transmission lines or distribution system or associated facilities with such lines or system by any licensee or consumer or a person engaged in generation in accordance with the regulations specified by the Appropriate Commission;”

A MORE GENERAL DEFINITION OF “OPEN ACCESS”A MORE GENERAL DEFINITION OF “OPEN ACCESS”

““Enabling of non-discriminatory sale/ Enabling of non-discriminatory sale/

purchase of electric power/energy purchase of electric power/energy

between two parties utilizing the system of between two parties utilizing the system of

an in- between (third party), and not an in- between (third party), and not

blocking it on unreasonable grounds”blocking it on unreasonable grounds”

Agencies involved in Short-Term Open Access

Transaction• RLDC (s)• SLDC (s)• CTU• STU (s)• Buyer• Seller• Trader

OPEN ACCESSOPEN ACCESS::

A JOURNEY FROM START TO NOW... A JOURNEY FROM START TO NOW...

OPEN ACCESS IN INTER-STATE TRANSMISSION - JOURNEY

CERC Regulations on Open Access in Inter State Transmission implemented w.e.f. 6-May-2004.

CERC amended the above Regulations and the amended Regulations implemented w.e.f 01-04-2005.

CERC on 25-01-2008 amended the Regulations and the new Regulations are implemented w.e.f 01-04-2008.

SCOPE OF THE OPEN ACCESS REGULATIONS

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

(a) Inherent design margins;

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

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

growth or generation addition:

As per CERC Regulations 2008 Clause 3

OPEN ACCESS IN INTER-STATE TRANSMISSION

Products – Long term Access Short term Access

AdvanceFirst Come First ServeDay ahead Same Day transactions

As per CERC Regulations 2004 and amendment 2005

CATEGORY OF OPEN ACCESS CUSTOMERS CATEGORY OF OPEN ACCESS CUSTOMERS

LONG TERM : TWENTYFIVE YEARS AND ABOVELONG TERM : TWENTYFIVE YEARS AND ABOVE Life of the Assets about 25 yearsLife of the Assets about 25 years

Existing beneficiaries of a regional transmission Existing beneficiaries of a regional transmission

system owned or operated by CTU- deemed long system owned or operated by CTU- deemed long

term customersterm customers

New Long Term Open Access customers: Require New Long Term Open Access customers: Require

BPTA for inter-State transmissionBPTA for inter-State transmission

SHORT TERM : WHICH IS NOT LONG TERMSHORT TERM : WHICH IS NOT LONG TERM - - Essentially a Non firm serviceEssentially a Non firm service

The service may be curtailed if system security The service may be curtailed if system security demands.demands.

As per CERC Regulations 2004 and amendment 2005

Effective 01.04.2008 Regulations cover only Short-term Open Access Transactions categorized as Bilateral and

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

Bilateral Transactions Nodal Agency

Bilateral : RLDCs Collective : NLDC

OPEN ACCESS IN INTER-STATE TRANSMISSIONAs per CERC Regulations 2008

OPEN ACCESS IN INTER-STATE TRANSMISSION

Products – Short term Access

AdvanceFirst Come First ServeDay ahead Contingency

As per CERC Regulations 2008

Provisions relating to Long term as per the Open Access Regulations, 2004 to continue, till CERC further notifies.

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

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

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

open access charges. Moving towards empowerment of SLDCs

OPEN ACCESS IN INTER-STATE TRANSMISSIONAs per CERC Regulations 2008

Regulation 2004 of CERC Regulations on Regulation 2004 of CERC Regulations on Short-Term Open AccessShort-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. Applition 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 Duration

-- Bilateral -Up to 3 months separate application for each monthBilateral -Up to 3 months separate application for each month

- Collective: -Only Day ahead

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

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

c. Handling & Service Charges –Nil

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

Contd …Contd …

Comparison of CERC Regulations on Short-Term Open Access (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. Open Access Duration

- Up to One year maximum

- single application possible


- Up to Three Months max.

- single application possible


Bilateral

-Up to 3 months - separate application for

each month- Collective:- Only Day ahead

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.

No.

Old Regulations

(06.05.2004 to 31.03.2005)

Amended Regulations

(w.e.f. 01.04.2005 to

31.03.2008)

Regulations, 2008

(w.e.f. 01.04.2008)

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 region

Collective Transactions (Px):

-Rs. 30/MWh for each point of injection and drawal

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





c. Handling & Service Charges

– Nil

Operating Charges

Bilateral:



– Rs. 2000/day for each RLDC and SLDC involved

c. Handling & Service Charges -Nil

Collective Transactions:



– Rs. 5000/day to NLDC for each State involved ; -NLDC to Share with RLDCs


ER-NR

NER-ER

WR-NR

SR-WRSR-ER

EASTERN REGION

SOUTHERN REGION

WESTERNREGION

NORTHERN REGION


STOA RATES

2004 AND 2005 AND 2008

ER-WR

700.91

313.93

649.86

339.98

919.71

1462.44881.4

9

967.58

233.32

460.41

270.49

614.15

434.42

516.03

359.68

2433.39

1128.39

447.73

1795.11

859.05

433.09

20042004 20052005 20082008

Scheduling Charges (Rs/Day)RLDCs SLDCs

30003000

3000300030003000

1000100020002000

20002000

Handling Charges 2%2% NILNIL NILNIL

Transmission Charges: Bilateral: Rs.30/MWh – intra- regionalRs.60/MWh – Between adjacent regionsRs90/MWh – Wheeling through one or more regionCollective Transactions (Px):-Rs. 30/MWh for each point of injection and drawal

STOA CASESTOA CASE

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 0000-0600HRS

AP

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

CT

U

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-WR

TOTAL 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








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 60 /MWH FOR WHEELING


PER UNIT 7.83Ps/.




AP

WR GRID

MP


BHADRWATHI IN WR


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)

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)

Total STOA Charges Paisa/Unit

34.53


13.52


7.83


A SUCCESS STORY A SUCCESS STORY

36

INTER REGIONAL CAPACITIESInter regional Link

MW capacity

NER-ER 1,240ER-NR 6,020ER-SR 1,120ER-WR 1,760SR-WR 1,680WR-NR 2,080Other 132 KV Links

200

Talcher Kolar HVDC Bipole

2,500

Total 17,000Target for 2012

37,700

30,500 MW

16,00042,420 MW

39,175 MW

37,486 MW

19,416 MW

2,506 MW

EASTERN REGION

SOUTHERN REGION

WESTERNREGION

NORTHERN REGION


ALL INDIA ATC

ER

ATC = 800 MW

ATC = 750 MW ATC = 950 MW

ATC = 1375 MW

ATC = 1395 MW

ATC = 474 MW

ATC =226 MW

ATC = 920 MW

ATC = 900 MW

ATC = 900 MW

(Figure shown are for April-2008)

All India basis

778

3938

5933

9560

0

1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

No.

Of

Tra

nsac

tion

s

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

YEAR

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

Tra

nsa

ctio

ns

2005-06 2006-07 2007-08

YEAR

DETAILS OF ADVNCE AND FCFS APPROVED STOA TRANSACTIONS

19.79 Bu

18.49 Bu

23.46 Bu

No. of Transactions


All India basis

3201

5088

8674

0

1000

2000

3000

4000

5000

6000

7000

8000

9000

No.

Of

Tra

nsac

tion

s

2005-06 2006-07 2007-08

YEAR

DETAILS OF DAY AHEAD AND SAME DAY APPROVED STOA TRANSACTIONS

2.74 Bu

5.11 Bu

6.37 Bu

No. of Transactions


All India basis

STOA – SUCCESS STORY

Applications Processed

(Since Beginning) > 20,000 No. Volume (Approved Energy)

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

Refusal/Non-consent by SLDCs

> 3 - 4%

Refusal due to system constraints

< 0.5 %

STOA – SUCCESS STORY Transactions between extreme corners of the country

RGCCPP ( Kayamkulam) to PSEB

Arunachal Pradesh(NER) to PSEB

TNEB to J&K

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

Ugar Sugars (KAR) - JAIPUR (RAJASTHAN)

Godavari Sugars (KAR) - MSEDCL

NCS Sugar(ANDHARA) – GUVNL

Indorama ( MAH) – APPCC ( ANDHRA) MORE DETAILS

STOA – SUCCESS STORY

Due to High demand in the regions, the costly power has been traded through STOA

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

Diversity being gainfully utilised by Market players under STOA

Generators PLF has also increased.Kayamkulam GPS

(PLF Improved, in 2006-07 – 57% and 2007-08-

82%)


ISSUES ISSUES

Issues

Skewed load – generation pattern Increased line loading Consents by STU/SLDC for injection

of power by embedded customers Telemetry Metering Scheduling PPAs

UI Settlement of Intra state entities

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


WAY AHEAD WAY AHEAD

WAY AHEADCERCs Open Access Regulations 2008 have facilitated

Greater role assigned to State Load Despatch Centre (SLDC) to bring

them at par with the Regional Load Despatch Centre (RLDC).

unless specified otherwise by the concerned State Commission, the

UI rate for intra-State entity shall be 105% (for over-drawals/under

generation) and 95% (for under-drawals / over generation) of the UI

Rate at the periphery of regional entity. This has been done to

facilitate dispute free energy accounting and settlement of

deviations for intra-state entities located in the State where intra-

state ABT has not yet been implemented.

Empowerment of SLDCs has been made technically and financially.

WAY AHEAD

CERCs Open Access Regulations 2008 have facilitated

Traditional bilateral transactions as well as collective transactions discovered in a Power Exchange.

Scheduling and open access for collective transactions discovered in a power exchange through anonymous simultaneous competitive bidding by buyers and sellers, presently on day-ahead basis.

Operationlisation of power exchanges.

CTU has submitted Procedure for collective transactions to the Hon’ble Commission.

WAY AHEAD

IMPLEMENTATION INTRA STATE ABT IN ALL STATES.

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

Eastern Region

NBVL(OPTCL) 27

SAIL-DSP(DVC) 20

TISCO(DVC) 60

Bhushan Steel 25

J.P Cement (Rewa) 5

Western RegionIndo Rama synthetics 22

PSKL 10-30

Southern Region

Renuka Sugar 25

Vishwanath Sugar 7.5

Godavari Sugar 25

Ugar Sugar 25

Jindal Steel 200

Nav Bharat 50

NCS Sugar 13 Back

TYPICALTYPICALSTOA CASE STOA CASE

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

KE

RA

LA

INJECTING UTILITY RGCCPP,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


KE

RA

LA

KAYAMKULAM RGCCPP(NTPC)

WR

NRPSEB



EXPORT AT RGCCPP BUS 150 MW

PSEB RECIEVES 134.4 MW

AT KERALA PERIPHERY 148.9 MW

LOSSES 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


KE

RA

LA


WR

NRPSEB









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

KE

RA

LA


WR

NR






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


UNIT 18.5Ps

Payments as per Regulation 2004 Amendment 2005) of CERC


PSEB

SR

KE

RA

LA


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


UNIT 12.2Ps




Old Regulations

(06.05.2004 to 31.03.2005)

Amended Regulations

(w.e.f. 01.04.2005 to

31.03.2008)

Regulations, 2008

(w.e.f. 01.04.2008)


15.12


18.5


12.2

Back

STOA OF NBVL(ORISSA) - APPCC (0000 – 2400 HRSSTOA OF NBVL(ORISSA) - APPCC (0000 – 2400 HRS) ) 5050 MW AT INJECTION POINT FROM 01.03.08 to 31.03.08MW AT INJECTION POINT FROM 01.03.08 to 31.03.08

ORISSA

SR

CTU

HVDC BACK TO BACK AT GAZUWAKA IN SR

ER

EXPORT AT NBVL(ORISSA) 50 MW

AT ER-SR PERIPHERY 47.05 MW

LOSSES IN ER 3%

LOSSES IN SR 3.12%

TOTAL LOSSES FOR TRANSACTION 4.42 MW

APPCC RECEIVES 45.58 MW

ANDHRA PRADESH

LOSSES IN OPTCL SYSTEM 3%

AT ER PERIPHERY 48.50 MW

NBVL

NAVABHARAT(NBVL) (ORISSA)(ER) to

APPCC (ANDHRA)(SR)


Consent was not given by OPTCL by citing the following Reasons

As per provision under chapter 4.11,10.5 of OGC Rule 2006 and order dated 29.10.2007 passed by Hon’ble OERC, the real time data of the CGP,(M/s NBVL) is yet to be received at the SLDC, Control Room.

In absence of real time data monitoring facility, SLDC cannot

comply the OGC provision under chapter 3.4(9) during

contingency condition.

Due to the above reasons the Request for Consent is not

accepted.


APPCC (ANDHRA)(SR)50 MW for 31 days on Round the Clock basis

4.10 Data and Communication Facilities Reliable and efficient speech and data communication systems shall be provided to facilitate necessary communication and data exchange, and supervision/control of the grid by the RLDC, under normal and abnormal conditions. All agencies shall provide Systems to telemeterpower system parameter such as flow, voltage and status of switches/transformer taps etc. in line with interface requirements and other guideline made available to RLDC / SLDC. The associatedcommunication system to facilitate data flow up to RLDC/SLDC, as the case may be, shall also be established by the concerned agency as specified by CTU in connection agreement. All agencies in coordination with CTU shall provide the required facilities at their respective ends and RLDC / SLDC as specified in the connection agreement.

FROM IEGC CLUASE 4.10


APPCC (ANDHRA)(SR)


Though the Parties have approached CERC, but the open access transaction is not through.

Consent was not given by KPTCL by citing the following Reasons

The Sugar companies started trading of the surplus power by applying through open access .But initially KPTCL has not consented by citing the reason that the sugar companies are having PPA with ESCOMs.Later the Sugar companies have approached CERC and CERC allowed them to trade under open access.

Aggreived by the order of CERC, KPTCL has approached the Appellate Tribunal. The Tribunal stated that if any petition is filed , the state commission shall consider the same. But the existing open access arrangement to continue.

Total Transfer Capability: TTCTotal Transfer Capability: TTC

Voltage Limit

Thermal Limit

Stability Limit

Total Transfer Capability

Total Transfer Capability is the minimum of the Thermal Limit, Voltage Limit and the Stability Limit

Time

Power Flow

Total & Available Transfer CapabilityTotal & Available Transfer Capability

ATC = TTC – RM

Reliability Margin (RM)

Long Term Open Access (LTOA)

Short Term Open Access (STOA)

TTC

ATC

-50

0

50

100

150

200

250

300

00

:00

01

:00

02

:00

03

:00

04

:00

05

:00

06

:00

07

:00

08

:00

09

:00

10

:00

11

:00

12

:00

13

:00

14

:00

15

:00

16

:00

17

:00

18

:00

19

:00

20

:00

21

:00

22

:00

23

:00

00

:00

48.2

48.4

48.6

48.8

49

49.2

49.4

49.6

49.8

50

SKEWED LOAD-GENERATION PATTERN

SR FREQUENCY

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