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UI & Intra-State ABT

UI & Intra-State ABT. K . RAMAKRISHNA Power Grid Corporation of India Ltd. SCOPE OF THE PRESENTATION. ABT AND UI INTRA-STATE ABT – IT’S NEED ISSUES OF CONCERN IMPLEMENTATION PLAN. GRID STATUS – PRE - ABT. Large Frequency fluctuations 48.0Hz to 52 Hz. Low Voltages

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UI & Intra-State ABT

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  1. UI & Intra-State ABT K . RAMAKRISHNA Power Grid Corporation of India Ltd.

  2. SCOPE OF THE PRESENTATION • ABT AND UI • INTRA-STATE ABT – IT’S NEED • ISSUES OF CONCERN • IMPLEMENTATION PLAN

  3. GRID STATUS – PRE - ABT • Large Frequency fluctuations • 48.0Hz to 52 Hz. • Low Voltages • 400kV going down upto 300kV • Frequent Grid Disturbances • Sub-Optimal Operation • High Technical loss Grid Operation on fire fighting instead of Optimisation & Economy

  4. AVAILABILITY BASED TARIFF Spearheaded by POWERGRID Features: • Unique commercial mechanism linked with frequency • Fixed Charges i.e. Capacity charges • As per Plant Availability. • Variable Charges i.e. Energy charges • As per Schedule. • Unscheduled Inter change (UI) i.e. deviations from schedule ( Schedule – Actual) • Price as per prevailing system frequency SCH-ACT GRAPHS

  5. UI RATE Current Rate of Unscheduled Drawal/Injection From 01.04.2004 to 30.09.2004 From 01.10.2004 to till date Till 31.03.2004

  6. AVAILABILITY BASED TARIFF • Achievements • Implemented between July 2002 and Nov.’2003 • Improved quality of supply. • Unutilised capacity harnessed-PumpedStorage • Merit order Operation. • Grid discipline • Emphasis on load forecasting • Discourage overdrawals during low frequency • Facilitate bi-lateral trading • Maximisation of generation availability ABT ACHIEVEMENTS

  7. Need for intra-State ABT • Accountability of utilities after reforms • Passing on UI payment • Intra State ABT to identify agencies responsible for overdrawal/underdrawal, overgeneration/ undergeneration, resulting in UI payment to regional pool. • Proper Demand forecast and load management by DISCOMs • To establish a framework for bilateral trading at intra-State level • To achieve overall merit order operation.

  8. Inter-State ABT Non-conventional source of energy e.g., wind energy Intra-State ABT IPPs CPPs • Distribution Control Centre –One for each Discom • ISGS: Inter State Generating Stations • SGS: State Generating Stations • CTU: Central Transmission Utility • STU: State Transmission Utility

  9. Intra-state ABT – Achieves. • Mechanism to price power based on Demand/Supply • Harness surplus generating capacity available in state with CPPs/IPPs • Operation of grid on economic principles –Merit Order Despatch • Open Access in Intra-state Transmission and Distribution.

  10. Intra-state ABT – achieves • Generate signals for efficient grid operation at the intra-state level. • Overdrawals at low frequency by Discoms duly priced. • Encourage serving of higher consumer demand • Encourage maximisation of generation during deficit conditions. • Each Discom and state generating station responsible for its actions – a profit centre • Commercial signals available to large consumers capable of regulating drawal

  11. …Intra-state ABT – achieves. • UI mechanism at the intra-state level. • UI to be applied on the deviations from the schedules of the DISCOMS/State generators/IPPs/CPPs. • State Utilities to be collectively liable for the States’ liabilities with the regional UI pool account. • Achieves merit order operation for all the entities under ABT • Commercial viability of running Pumped Storage Stations.

  12. Issues needs to be addressed for intra-State ABT • Restructured SEBs • Identification of entities for intra-State ABT • Scheduling Principles & Procedures • Commercial Principle • Metering Philosophy • Treatment of existing Agreements • Organisational Development • Regulatory Issues

  13. Options for different market participants like CPPs/Co-gens DISCOM-B Case-II DISCOM-A Case-I Case-II Case-III CPP/ Co-Gen

  14. Case- I CPP embedded in same DISCOM No intra-State ABT (in future, can be in intra-DISCOM ABT) Options for different market participants like CPPs/Co-gens Case-II CPP located in One DISCOM, sale power to host DISCOM and to other DISCOM also Intra-State ABT Case-III CPP located in one DISCOM, selling power to other DISCOM Intra-State ABT

  15. Some of the features of New National Electricity Policy – Feb.’05 • Appropriate Commissions to undertake development of power market • SERCs to notify GRID CODE by September 2005, if not yet notified • State Commissions to ensure upgradation of SLDCs by June 2006 • SERCs are advised to introduce ABT regime at the State level within one year i.e. by February 2006.

  16. Status on intra-State ABT • Many SEBs restructured, others in process • State Utilities looking for benefits of intra-State ABT • Gujarat took lead for intra-State ABT • Punjab took lead in Northern Region • Road-map for Maharashtra is ready • Other States like MPSEB & Haryana to follow • POWERGRID assisting these States by providing consultancy

  17. Thank You

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