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Transsmision Planning in India

Welcome…. Transsmision Planning in India. R P Singh Chairman & Managing Director Power Grid Corporation of India Ltd rpsingh@powergridindia.com. Tr. Planning Practices. Indian Power System divided into five electrical Regions

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Transsmision Planning in India

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  1. Welcome… Transsmision Planning in India R P Singh Chairman & Managing Director Power Grid Corporation of India Ltd rpsingh@powergridindia.com

  2. Tr. Planning Practices • Indian Power System divided into five electrical Regions • Gradual shifting from Regional level planning to National level due to uneven disposition of energy resources • Planning of National Grid by interconnecting different regional grids with high capacity lines as well as development of Regional Grids

  3. Regional Grids I/C 28,700MW DEMAND 24,000 MW I/C 2,300MW DEMAND 1,200 MW NORTH EASTERN REGION NORTHERN REGION I/C 31,400MW DEMAND 25,600 MW EASTERN REGION WESTERN REGION I/C 15,700MW DEMAND 8,200 MW SOUTHERN REGION I/C 28,900MW DEMAND 21,000 MW

  4. Tr. Planning Practices … contd • Planning process involves Policy makers, Authority, Generating agencies, Beneficiaries and Transmission utilities • Tr. Planning is not confined only to connect generation to the grid points but also take care of overall development of the grid • Tr. Planning criteria and Indian Electricity Grid Code being followed

  5. Tr. Planning Procedures • Future Power demand projections carried by Central Govt. and Electric Power Survey Report published • Future generation Capacity addition programme for next 10-15 years developed by Central Govt. • Based on the above information, a long-term perspective Tr. Plan evolved

  6. Tr. Planning Procedures … contd Phased development of Tr. system • Different generation utilities both at Center & State level firm up generation schemes, their time frame and beneficiaries, based on which - • State Tr. Utility (STU) plans and coordinates transmission system within states • Central Transmision Utility(CTU) evolves optimal inter-state and inter-regional transmission system in co-ordination with Authority & STUs

  7. Tr. Planning Procedures … contd • The Tr. System so evolved fulfils the security standards as stipulated in the Planning criteria and Grid Code • The Tr. System so planned has adequate capacity margin for future requirements and also fits into long-term perspective plan • In addition to generation associated Tr. Schemes, system strengthening schemes are also evolved for overall development of the grid • Tr. Schemes discussed and finalised in a common forum of Authority, generation utilities, beneficiaries, STUs and CTU

  8. Hierarchy of Indian Power System National Grid 1 Regional Grids 5 State Utilities 33

  9. Tr. Planning Criteria • Tr. Capacity of a corridor evolved considering maximum power dispatch • Security standards • Withstand ‘n-1’ contingency without rescheduling of dispatch • Outage of 400kV D/c line, if such possibility is more • Application of ‘n-2’ contingency for multi line & vital Tr. corridors

  10. Tr. Planning Criteria … contd • Tr. Capacity of a corridor evolved considering maximum power dispatch • Security standards • Withstand ‘n-1’ contingency without rescheduling of dispatch • Outage of 400kV D/c line, if such possibility is more • Application of ‘n-2’ contingency for multi line & vital Tr. corridors • System should remain in synchronism with outage of one single largest unit/ 5 cycles SLG fault followed by opening of line/outage of one pole of HVDC bipole

  11. Tr. Planning Consideration • Bulk power transmission from generation resource confined to few pockets to far-off load centers across the regions • Conservation of Right-of-Way • Flexible for phase development • High availability/Reliability • Optimum Transmission cost

  12. Technological Options • Maximum utilisation of existing transmission facilities • Application of FACTS devices – SVC, TCSC etc. • Uprating/upgrading of Tr. Lines • Conversion of AC line to HVDC line • Dynamic Thermal circuit rating • Development of new Tr. corridor • Multi-conductor line • 800kV lines/HVDC bipole • Compact line/Multi-circuit lines • High thermal rating conductors like INVAR

  13. Transmission Plan

  14. Future Transmission Plan PHASE II & III

  15. Growth of cumulative capacity of inter-regional links

  16. POWERGRID, INDIA …with clear Vision. Thank You

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