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Hari Shankar Shrestha , PhD 2 January 2013

Hari Shankar Shrestha , PhD 2 January 2013. Nepal’s present and future power system scenario. Outline. Energy situation in Nepal Alternatives to solve the problem of load shedding Optimum operation of PRoR and storage power plants Reservoir sedimentation management Power market.

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Hari Shankar Shrestha , PhD 2 January 2013

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  1. Hari Shankar Shrestha, PhD 2 January 2013 Nepal’s present and future power system scenario

  2. Outline • Energy situation in Nepal • Alternatives to solve the problem of load shedding • Optimum operation of PRoR and storage power plants • Reservoir sedimentation management • Power market

  3. HYDROPOWER POTENTIAL IN NEPAL • Theoretical hydropower potential 83, 000 MW • 45,610 MW capacity economically feasible Upper Karnali (300) Dudh Koshi (300)) Budhi Gandaki (600) Upper Tamakoshi (456) Upper (335), Arun III (402) & Lower Arun (308) Pancheshwor (6400) Karnali Chisapani(10800) Kali Gandaki 2(660)

  4. NEPALESE POWER SYSTEM INSTALLED CAPACITY: 718 MW IN GRID 713.0 MW OFF GRID (HYDRO) 5.0 MW HYDRO 659.59 MW THERMAL 53.41 MW IPP 187.58 MW NEA 472.0 MW STORAGE 92 MW ROR 380.0 MW

  5. EXISTING MAJOR HYDROPOWER PLANTS • Total installed capacity 718 MW, • 665 MW (93%) Hydropower Plants Middle Marsyangdi (70) Bhotekoshi (36) Khimti (60) Kali Gandaki 2(144) Marsyangdi (70) Kulekhani I (60) Kulekhani II (32)

  6. EXISTING MAJOR HYDROPOWER PLANTS, Kali Gandaki A, 144 MW

  7. EXISTING MAJOR HYDROPOWER PLANTS, Marsyangdi, 69 MW

  8. EXISTING MAJOR HYDROPOWER PLANTS, Middle Marsyangdi, 70 MW

  9. EXISTING MAJOR HYDROPOWER PLANTS, Khimti, 70 MW

  10. EXISTING MAJOR HYDROPOWER PLANTS, Khimti, 70 MW

  11. EXISTING MAJOR HYDROPOWER PLANTS, BhoteKoshi, 36 MW

  12. EXISTING MAJOR HYDROPOWER PLANTS, BhoteKoshi, 36 MW

  13. EXISTING MAJOR HYDROPOWER PLANTS, Jhimruk, 12 MW

  14. EXISTING MAJOR HYDROPOWER PLANTS, Jhimruk, 12 MW

  15. EXISTING MAJOR HYDROPOWER PLANTS, AndhiKhola, 5 MW

  16. SYSTEM LOAD CURVE

  17. SYSTEM LOAD CURVE

  18. AVAILABLE ENERGY AND PEAK LOAD DEMAND

  19. SEASONAL FLOW VARIATIONS • High variations in the flow pattern of the River. • January flow in the river is about 6.34% to 17.36% of the maximum annual flow.

  20. Seasonal fluctuation of Power Supply MISMATCH IN THE SUPPLY AND DEMAND OF POWER Seasonal fluctuation of Peak Power and Energy Demand Dry Season -The fluctuation in Maximum demand and Energy demand through the year is about 9% and 13% respectively. -The seasonal fluctuation is about 55%.

  21. ALTERNATIVES TO SOLVE THE PROBLEM OF LOAD SHEDDING

  22. KALIGANDAKI A POWER PLANT

  23. Kulekhani reservoir operation and energy production

  24. Kulekhani reservoir operation Mean monthly generation and water volume (1999 to 2010)

  25. Output from model Historic Alternative

  26. Output from Model contd. Historic Alternative

  27. Output from Model contd. Historic Alternative

  28. Output from Model contd.

  29. Kaligandakiand Middle Marsyangdireservoir Sedimentation Kaligandaki A Middle Marsyangdi

  30. Kaligandakiand Middle Marsyangdireservoir Sedimentation • Area-elevation and capacity-elevation curves Kaligandaki A Middle Marsyangdi

  31. Sedimentation monitoring in the Kulekhanireservoir • Area-elevation and capacity-elevation curves

  32. Sedimentation monitoring in the Kulekhanireservoir • Reservoir capacity loss and sediment deposition variation

  33. Sedimentation monitoring in the Kulekhanireservoir • Sediment deposition records • 18.0 mill. m3 of sedimentation due to the disastrous floods of 1993. • Stabilised the drainage basin to some extent • less sediment inflow to the reservoirafter 1995. • 1993 Flood

  34. ENERGY AND PEAK LOAD DEMAND FORECAST

  35. PLANNED/UNDER CONSTRUCTION PROJECTS Upper Seti (128) Upper Trishuli 3A(60) Upper Trishuli 3B (37) Upper Tamakoshi (456) Mistri Khola (42) Mai HP (22)

  36. PLANNED CAPACITY AND ENERGY BALANCE FOR 2013/14 IN NEPAL

  37. GROWING INDIAN POWER DEMAND

  38. POWER MARKET IN NORD POOL and INDIAN ENERGY EXCHANGE

  39. POWER POOLS IN THE WORLD • NORD POOL – THE NORDIC POWER EXCHANGE • ELECTRICITY POOL OF ENGLAND AND WALES • US POWER POOLS • INDIAN ENERGY EXCHANGE • SOUTH AFRICAN POWER POOL (SAPP) |

  40. NORD POOL – THE NORDIC POWER EXCHANGE

  41. SOUTH AFRICAN POWER POOL (SAPP)

  42. SOUTH AFRICAN POWER POOL (SAPP)

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