1 / 64

OPEN ACCESS EXPERIENCES and WAY AHEAD

OPEN ACCESS EXPERIENCES and WAY AHEAD. N.R.C BABU CHIEF MANAGER (MO), SRLDC, POWERGRID 10.08.2009. Open Access in Transmission: Why and What ? Journey … Success Story… Issues… Way Ahead…. REGIONAL GRIDS. INSTALLED CAPACITY NORTHERN :- 38,726 MW

hoang
Télécharger la présentation

OPEN ACCESS EXPERIENCES and WAY AHEAD

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. OPEN ACCESS EXPERIENCES andWAY AHEAD N.R.C BABU CHIEF MANAGER (MO), SRLDC, POWERGRID 10.08.2009

  2. Open Access in Transmission: Why and What ? Journey … Success Story… Issues… Way Ahead…

  3. REGIONAL GRIDS INSTALLED CAPACITY NORTHERN :- 38,726 MW EASTERN :- 20,815 MW SOUTHERN :- 42,377 MW WESTERN :- 46,348 MW NORTH-EASTERN :- 2,256 MW TOTAL 150,519 MW NORTHERN REGION NORTH-EASTERN REGION EASTERN REGION WESTERNREGION SOUTHERN REGION

  4. Hydro Coal Energy Resource Map

  5. Resources are far away from Load centers. Necessitates Long Transmission links for evacuation Spatial Distribution Of Load HYDRO RESOURCES DELHI KOLKATTA Source: Powerline (Siemens Ad), Oct-2006 MUMBAI COAL BELT BANGALORE CHENNAI AREAS SHOWN ARE APPROXIMATE AND INDICATIVE

  6. Diversity details of Regional Grids in India

  7. Necessity for strong transmission backbone … A strong transmission network backbone is essential in order to transfer the power across the length and breadth of the country : - Due to high load growth and low generation avenues in Northern and Western Regions - Due to low load and high generation in Eastern and North Eastern regions - Due to high load growth and monsoon dependent generation availability in Southern Region

  8. Milestones 1989 Unbundling of CS transmission from generation - (Formation of National Power Transmission Corporation .. now POWERGRID) 1991 Generation opened to Private Sector 1995 Unbundling process started in States - State unbundled into Gencos, Transco & Discom 1998 Electricity (Amendment) Act 1998 1998 Electricity Regulatory Commission Act passed 2003 Electricity Act 2003 enacted in June 2003 2004 CERC Order and Regulations on OPEN ACCESS

  9. 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;”

  10. A More general Definition of “Open Access” “Enabling of non-discriminatory sale/ purchase of electric power/energy between two parties utilizing the system of an in- between (third party), and not blocking it on unreasonable grounds”

  11. Scope/Applicability… 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

  12. Agencies involved in Short-Term Open Access Transaction RLDC (s) SLDC (s) CTU STU (s) Buyer Seller Trader Power Exchanges

  13. OPEN ACCESS: JOURNEY ...

  14. Open Access in ISTS: 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. CERC on 20.05.2009 amended the Regulations and the new Regulations are implemented w.e.f 15.06.2009

  15. Open Access in ISTS: Journey… • Long Term : Twenty five years and above - Life of the Assets about 25 years - Existing beneficiaries of a regional transmission system owned or operated by CTU- deemed long term customers - New Long Term Open Access customers: Require BPTA for inter-State transmission • Short Term : Which is not Long Term - Essentially a Non firm service - The service may be curtailed if system security demands.

  16. Effective 01.04.2008 Regulations cover only Short-term Open Access Transactions categorized as - Bilateral - Collective (through PX) Earlier Products of Short-Term retained under Bilateral Transactions Nodal Agency - Bilateral : RLDCs - Collective : NLDC Open Access in ISTS: Journey… CERC OA Regulations 2008

  17. Open Access in ISTS: Journey… Products – Short term Access - Advance - First Come First Serve - Day ahead - Contingency CERC OA Regulations 2008 Long term Access Provisions relating to Long Term as per the Open Access Regulations, 2004 to continue, till CERC further notifies.

  18. 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 2 days open access charges. Moving towards empowerment of SLDCs Open Access in ISTS: Journey… CERC OA Regulations 2009

  19. STOA CASE APTRANSCO to MPSEB 100 MW for One day from 0000 to 0600 hrs.

  20. MP WR GRID HVDC BACK TO BACK AT BHADRWATHI IN WR AP APTRANSCO - MPSEB THROUGH NVVNL (0000 HRS – 0600 HRS)100MW AT INJECTION POINT CUSTOMER:NVVNL TRADER:NVVNL INJECTING UTILITYAPTRANSCO DRAWEE UTILITY MPSEB • INTERVENING REGIONAL LINK • SR-WR CAPACITY APPROVED100 MW DAILY PERIOD0000-0600HRS

  21. MP WR GRID HVDC BACK TO BACK AT BHADRWATHI IN WR AP APTRANSCO - MPSEB THROUGH NVVNL (0000 HRS – 0600 HRS)100MW AT INJECTION POINT EXPORT AT AP 100 MW LOSSES IN SR3.12% AT SR PERIPHERY96.9 MW CTU LOSSES IN WR4% MP RECIEVES93.0 MW TOTAL LOSSES FOR TRANSACTION7.0 MW

  22. MP WR GRID HVDC BACK TO BACK AT BHADRWATHI IN WR AP APTRANSCO - MPSEB THROUGH NVVNL (0000 HRS – 0600 HRS)100MW AT INJECTION POINT Payments as per Regulation 2004 of CERC APPLICATION PROCESSING FEE Rs 5000 PER TRANSACTION • SCHEDULING CHARGES PER DAY • Rs 3000 FOR SRLDC • Rs 3000 FOR WRLDC • TRANSMISSION CHARGES PER MWPER DAY • Rs 700.91 FOR CTU-SR • Rs 881.49 FOR SR-WR LINK • Rs 339.98 FOR CTU-WR TOTAL TRANSMISSION CHARGEPER UNIT34.53Ps/. ST Rate - in Rs/MW/Day - Min. Charges for one day

  23. MP WR GRID HVDC BACK TO BACK AT BHADRWATHI IN WR AP APTRANSCO - MPSEB THROUGH NVVNL (0000 HRS – 0600 HRS)100MW AT INJECTION POINT Payments as per Regulation 2004 Amendment 2005) of CERC APPLICATION PROCESSING FEE Rs 5000 PER TRANSACTION • SCHEDULING CHARGES PER DAY • Rs 3000 FOR SRLDC • Rs 3000 FOR WRLDC • TRANSMISSION CHARGES PER MWPER DAY • Rs 700.91 FOR CTU-SR • Rs 881.49 FOR SR-WR LINK • Rs 339.98 FOR CTU-WR TOTAL TRANSMISSION CHARGEPER UNIT13.52Ps/. ST Rate - in Rs/MW/Day , - Charges as per continuous block of up to 6 hours, 12 hours, and more than 12 hours

  24. MP WR GRID HVDC BACK TO BACK AT BHADRWATHI IN WR AP APTRANSCO - MPSEB THROUGH NVVNL (0000 HRS – 0600 HRS)100MW AT INJECTION POINT Payments as per Regulation 2008 of CERC APPLICATION PROCESSING FEE Rs 5000 PER TRANSACTION • SCHEDULING CHARGES PER DAY • Rs 2000 FOR SRLDC • Rs 2000 FOR WRLDC • TRANSMISSION CHARGES • Rs 60 /MWH FOR WHEELING TOTAL TRANSMISSION CHARGEPER UNIT7.83Ps/.

  25. Comparison of CERC Regulations on Short-Term Open Access (Regulation 2004, Amendment 2005 and Regulations 2008) DETAILEDCASE STUDIES.ppt

  26. OPEN ACCESS: SUCCESS STORY…

  27. IR LINKS CAPACITY Linked with Barh Project ER-NR 400 kV Barh-Balia D/C: 1200 MW ER-WR 400 kV Ranchi-Sipat D/C: 1000 MW 6200 MW 2800 MW 38,018 MW 2100 MW 2255 20,516 1250 MW 44,043 MW 1700MW 1100 MW 2500MW 39,656 MW IR Capacity=15,450 MW (Till Sep 2009 = 17,650 MW)

  28. NORTHERN REGION NORTH-EASTERN REGION ER WESTERNREGION SOUTHERN REGION ALL INDIA ATC (Figure shown are for April-2008) ATC = 1375 MW ATC = 1395 MW ATC = 900 MW ATC = 900 MW EASTERN REGION ATC = 474 MW ATC =226 MW ATC = 950 MW ATC = 750 MW ATC = 800 MW ATC = 920 MW What Is ATC

  29. NORTHERN REGION 12650 MW 5000 MW NORTH-EASTERN REGION 7250 MW 3250 MW WESTERNREGION 2700 MW 3650 MW SOUTHERN REGION INTER-REGIONAL TRANSFER BY END OF 11th PLAN (2012) 3000 MW EASTERN REGION 37,700 MW OF INTER-REGIONAL POWER BY 2012

  30. All India basis

  31. All India basis

  32. EXPORT IMPORT IMPORT AT A GLANCE 2008 – 2009 AT A GLANCE 2009 – 2010

  33. Open Access – 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 %

  34. Open Access – 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 STOA and helped in enhancing the power availability in grid. Ugar Sugars (KAR) - JAIPUR (RAJASTHAN) Godavari Sugars (KAR) - MSEDCL NCS Sugar(ANDHARA) – GUVNL Indorama ( MAH) – APPCC ( ANDHRA) MORE DETAILS

  35. Open Access – Success Story Even costly power was harnessed to meet the high demand RGCCPP ( Kayamkulam) (NAPTHA) to PSEB BSES(KERALA) (DIESEL) to NDMC (DELHI) Diversity being gainfully utilised by Market players under STOA Delhi/TNEB Export in night ; Import during evening peak ANDHRA Export during evening peak ; Import in night Generators PLF has also increased. Kayamkulam GPS - (From 57 % in 2006-07 to 82 % in 2007-08- 82%)

  36. OPEN ACCESS: ISSUES…

  37. Open Access - Issues Skewed load – generation pattern Constrained Transmission Network under certain conditions Consents by STU/SLDC for injection of power by embedded customers Telemetry Metering Scheduling PPAs

  38. Open Access - Issues UI Settlement of Intra state entities Before the Implementation of Open Access Regulations 2008, for deviations different STU/SLDCs are charging differently for embedded customers. At times even the clearance was being withheld for want of approval philosophy. In the New Open Access Regulations the issues are being addressed

  39. OPEN ACCESS: WAY AHEAD…

  40. Open Access- Way Ahead… Empowerment of SLDCs Intra State ABT Power Exchanges (Pxs) Easy and workable solutions to tap micro/mini Non conventional Energy Resources

  41. Open Access- Way Ahead… Empowerment of SLDCs - 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.

  42. Inter-State ABT Intra-State ABT • ISGS: Inter State Generating Stations • SGS: State Generating Stations • CTU: Central Transmission Utility • STU: State Transmission Utility POWERGRID

  43. FURTHER IMPROVEMENT:INTRA-STATE ABT GENCOS PARTICIPATION VAR MANAGEMENT DISCOMS SCHEDULES COMMERCIAL INCENTIVES OPEN-ACCESS METERING

  44. Open Access- Way Ahead… A Power exchange facilitates equitable, transparent and efficient trading of power. Bridges the demand supply mismatch by bringing larger players together for buying and selling in an auction based system. While maintaining complete anonymity, resolves the constraints in the earlier formats, Viz. search costs, asymmetric information, transaction costs, and counter-party risks.

  45. Open Access- Way Ahead… “collective transaction” means a set of transactions discovered in 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.

  46. Open Access- Way Ahead… The ATC declaration is to be done by NLDC on its web site every day. Depending on the corridor availabilities the solution is to be found out and the allowed trades will be intimated to NLDC. If there is no congestion NLDC will accept the trades and issue the schedules to the power exchange and the same will be implemented in RLDC schedules. In Power Exchange transactions both buyer and seller have to pay the Transmission and operating charges separately. The transmission losses also have to be borne by the buyer and seller separately.

  47. Back

  48. TYPICALSTOA CASE KAYAMKULAM RGCCPP, NTPC to PSEB 150 MW for 31 days on Round the Clock basis

  49. SR STOA OF KSEB(RGCCPP) - PSEB 0000 HRS – 2400 HRS150MW AT RGCCPP EXBUS POINT for 31 days PSEB NR CUSTOMER: NVVNL TRADER: NVVNL HVDC BACK TO BACK AT VINDHYACHAL IN WR INJECTING UTILITY RGCCPP,KSEB DRAWEE UTILITY PSEB WR INTERVENING REGION WR HVDC BACK TO BACK AT BHADRWATHI IN WR • INTERVENING REGIONAL LINK • SR-WR • WR-NR INTERVENING STATE TRANSMISSION UTILITYKSEB KERALA CAPACITY APPROVED 150 MW DAILY PERIOD 0000-2400 HRS KAYAMKULAM RGCCPP NTPC)

More Related