This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
One of the high potential river in country Run off River type plant (ROR) 3 km river section , gross head available is 71 m. 2 generator units with each installed capacity 7.4Mw. average annual energy generation of 91 GWh. Estimated initial cost is US $ 27.2 Dollar construction supervision works were carried out fully by
NEA The project construction was started in May 1996
Civil construction detail Catchment Area 510 sq. km Maximum Design Discharge 27.5 /s Turbine Discharge25 /s Rated Net Head 66.96 m Diversion Weir H=7.5 m, L=33 m Intake L=33 m, H=0.7 m, W=20.5 m Box Culvert 250 m (twin barreled) Desanding Basin (twin chambered) L=154.5 m, W=10 m, H=6.5 m Open Canal 61 m Regulating Pondage 37,900 Total Tunnel length 2071 m Surge tank H=40 m, dia=9 m Powerhouse L=28 m, W= 14.5 m, H=23.5 m Tailrace Box Culvert 281 m
Mechanical details Turbines
TypeVertical, Francis
Number 2 Rated Output 7.4 MW Rated Speed 429
rpm
Shaft Orientation
vertical
Penstock Diameter 3.5m Length
32m Material
Steel
Draft tube Type
cylindrical Pressure
compensation
Electrical Details Generators
Type Vertical Shaft, Synchronous type Number 2 Capacity 8260 kVA Power factor 0.9 Voltage 6600 V Frequency 50 Hz
Transformers Type Three phase Number 2 Capacity 8260 kVA Voltage Ratio 6.6/132 kV
Transmission Line 132 kV, L=37 km Towers 109 nos. Installed Plant Capacity 14.8 MW (2 x 7.4 MW) Total Avg Annual Energy 92.5 GWh
Generator Transformer
Generator Transformer
Motor Induction motor
Used in dewatering system, cooling system, diesel generator starter
Servo motor Used in governing the guide vane during