Projects

Akhu Khola Projects

Ankhu Khola 1 Hydropwer Project (8.4MW)

Ankhukhola Jalvidhyut Company Ltd (AKJCL) is a hydropower generation company incorporated in Nepal under the Companies Act, 2063, and licensed by the Department of Electricity Development (DOED) to develop, own, and operate the Ankhukhola 1 Hydroelectricity Project

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Ankhu Khola 2 Hydropower Project (20MW)

Ankhu Khola-2 Hydroelectric Project (AK2HEP) is a Run of River (RoR) type project with installed capacity of 20.00 MW. AK2HEP is being developed by Ganesh Himal Hydropower Limited (GHHL). The AK2HEP utilizes a design discharge of 27.73 m³/s from Ankhu khola with a gross head of 91 m.

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Salient Features

LOCATION

Latitude :28o00u201900u201d, to 28 o00u201957u201d, N
Longitudinal :84 054u201900u201d to 84 055u201932u2033E
District : Dhading
VDC : Salyankot and Marpak

HYDROLOGY

Catchments area of Akhu Khola :633 km2
Snow covered catchement area : 24 km2
40 percentile flow :39.86 m3/s
Design flood at intake : 1213 m3/s (100 years flood)
Head works:

Technical Specifications

Diversion weir

Weir type: Concrete gravity type
Weir crest length: 41.00 m
Ponding Level: 570.40m

Intake

Type: Orifice type
Still Level: 568 m
Number of Intake: 5

Approach Canal

Length: 85m
Culvert Slope: 1 in 500, 1 in 1000
Size (width*depth): 6.00 m * 4.65m

Settling basin

Length of inlet transition: 10m
Length of settling zone: 60m
Chamber width: 10m

Headrace Steel pipe

Type: Steel pipe of dia 4m/ buried
Thickness: 12mm
RCC
Length: 820m
Slope: 1:1:000

Surge Tank

Type: RCC
Diameter: 10m
Height: 15m
No. of Chamber: 3 No
Settling basin trapping efficiency: 90% of 0.20 mm particle

Penstock

Type: exposed, Supported/ Anchored
Total Length: 50*3=150m
Internal Diameter: 2500mm
Thickness: 12 mm
No of pipe: 3 Nos

Power house

Type: Semi underground
Size: 48m*18m
Height: 15m from the floor level

Tailrace Canal

Type: Trapezoidal (open flow)
Width: 1q0m for first 100m and 20m thereafter
Side slope: 1v:2h
Tall water Level: 539.652 m from MSL
Length: 980m

River Training Work

Type: Earthen bond with gabion mattress
Length: 950m
Width: 3m at top with 1:1 side slope
Height: 3m

Mechanical and Electrical

Turbine type: francis (Vertical)
Number of unit: 3 nos
Capacity: 2.8*3 = 8.4 MW
Transmission Line: 12k m long, 33kv type

Power

Design Discharge: 34.5m3/s
Gross Head: 30.84 m
Net head at design flow: 27.84m
Installed Capacity: 8.4MW
Dry season energy: 6.737Gwh/year
Wet season energy: 39.671Gwh/year
Total Energy: 46.408Gwh/year

Generator

Type: salient pole, synchronous
No.: 3nos
Rating: 3000KVA
Power factor: 0.85 over excited
Frequency: 50 hz
Rated speed: 300 rpm
Rating voltage: 6.6 kva

Access Road

Total length: 7km
Road width with shoulders: 4.0m
Maximum Gradient: 10%
Cross slope: 4%
Design speed: 30 km/h
Road surface: 300 mm thick gravel