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Case Study: Madhya Bhotekoshi Hydroelectric Project?

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Case Study: Madhya Bhotekoshi Hydroelectric Project?
1. INTRODUCTION
Madhya Bhotekoshi Jalavidhyut Company Limited (MBJCL) is a subsidiary company of Chilime, registered as public company in july 2010. MBJCL has planned to develop Middle Bhotekoshi Hydroelectric Project (MBKHEP) with an installed capacity of 102 MW in Sindhupalchowk district of Central Development Region. The Madhya Bhotekoshi Jalavidhyut Company Limited (MBJCL) is a public limited company established in 2010 AD to harness country’s hydropower potential. The company has planned to develop Madhya Bhotekoshi Jalavidhyut Company Limited in the easily accessible area.
The proposed project is to be constructed under run of river type scheme having the capacity of 102 MW with the available gross head of 235 m and the annual energy …show more content…
The design discharge and gross head of the project are 50.8m3/sec at Exceedence Q40 and 235m respectively. The head works consist of gated diversion weir with three numbers of gates of size 10 m wide and 7.4 m high and one number of under sluice of size 10 m wide and 9.4 m high, side intake structure; 100 m long, 13 m wide and 8.5 m high triple chamber desanding basin; forebay and 360 m long pressure conduit. The headrace tunnel is 7124 m long, out of which about 4274 m of the tunnel length (60% of total tunnel length) will be shotcrete lined and 2850 m of the tunnel length (40% of tunnel length) concrete lined. A cylindrical restricted orifice type of surge tank with 15 m diameter and 59 m height with 500 mm thick concrete lining is used in the project. Underground penstock is between surge tank and powerhouse. The total length of the penstock is 667 m. The powerhouse is semi-underground and 52 m (l) x 15 m (b) x 25.5 m (h) in dimension. The powerhouse will accommodate 3 units of Francis turbineof34 MW capacities each positioned in vertical axis providing the space for service bay. A 100 m long tailrace canal will discharge the tail-water back to the Bhotekoshi River. The annual salable generated energy of the project of 542.2 GWh and generated power from the project will be evacuated through newly constructing 4 km long 220 kV transmission
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