PHUKOT KARNALI PEAKING RoR HYDROELECTRIC PROJECT

  • Project Date:03 September 2018
  • Our Team:
  • Client:
  • Categories:Detailed Engineering Study
Description

PHUKOT KARNALI PEAKING RoR HYDROELECTRIC PROJECT (426 MW)

Commencement

October 10,2017

Completion

November 29, 2019

Duration

about 26 months

Quick View of the Project (Based on desk study)

Generals

 

The Employer

Vidhyut Utpadan Company Limited (VUCL)

 

The Consultant

NEA Engineering Company Limited

 

Project Location

Karnali Province, Kalikot District, Nepal

 

 

29⁰19’03” N to 29⁰09’32” N latitude

 

 

81⁰45’00” E to 81⁰35’28” E longitude

 

 Proposed Intake site:

 

Proposed Power House site:

Approximately 35km upstream of the headworks area of Upper Karnali Hydroelectric Project (900 MW)

 

Approximately 7 KM Upstream of the Karnali River and Tila River confluence.

 

Accessibility

: Nearest all weather road is lies in Humla-Karnali Highway Near Manma      Bazar, District Headquarter of kalika District

: Approximately 160 km north of Birendranagar Bazar(Surkhet Airport) in Surkhet District

Technical

 

Project Type

Peaking Run of River (PROR)

Hydrology and Sediment Study

 

Karnali River

 

Stream flow gauging station

Lalighat Gauging Station installed by DHM in the downstream of Proposed Dam site

 

Catchment Area

16,902 Km2 (Approx.)

 

Design Discharge

: 348 m3/s

Reservoir

 

Gross storage volume   

79.78 Mm3

 

Live storage       

40.13 Mm3

 

Length of reservoir

 14 km

 

Dry season Full supply level

910 masl

 

MDDL   

906 masl

 

DAM

 
 

Type

Roller Compacted Concrete(RCC)

 

Height

107 m from river bed level

 

Top elevation

913 masl

 

Spillway

 
 

Overflow Spillway

: Ogee and gated

: 5 Nos of gate, 12 m x 20 m (BxH)

: Crest Level at 891 masl

: Flip Bucket Type Energy Dissipation

 

Sluice Spillway  

: Ogee

: 2 Nos of gate, 8 m x 10 m (BxH)

: Crest Level at 870 masl

: Sky Jump Type Energy Dissipation

 

Power Intake

 
 

Invert level        

: 875 masl

 

Number and size of intake gate

:  2 Nos, 8 mx 10 m (BxH), Vertical Lift    

 

Dry season design discharge

: 348m3/s

 

Wet season design discharge

395 m3/s

 

Environmental flow

: 7.7 m3/s

 

Sediment Undersluice  

4 Nos, at Level 867 masl

 

Water Conveyance System:

 
 

Headrace Tunnel

: 2 Nos, 8 m Dia, horse-shoe shape, 6 km length(Approx.)

 

Surge Tunnel

: 2 Nos, 9.5 m Dia, Circular shape

 

Pressure Shaft and Tunnel

: 2 Nos, 6.7 m Dia, Circular shape, 459m length(Total)

 

Powerhouse

 
 

Type

: Underground

 

Number of Generating Units

6

 

Type of Turbine

: Francis vertical axis

 

Gross Head

:168.30 m

 

Rated Net Head               

158.70 m

 

Turbine Center Line Level

734.70 masl

 

Normal Tail Water Level               

741.70 masl

 

Installed Capacity

426 MW

Tailrace Tunnel

 

Size 

2 Nos, 9.5 m dia, Horseshoe shape

 

Length

318 m and 382 m

 Energy

 

Total Energy

2442.80 GWh/Year

 

Dry Season Peak Energy              

480.70 GWh/Year

 

Dry Season Off Peak Energy

264.50 GWh/Year

 

Wet Season Energy

1697.60 GWh/year

Transmission line

 

Length

3.5 km(Approx)

 

Voltage

400 kV

Consultant Scope of Works:

  • Literature review of the previous study;
  • Detailed Engineering study of PKHEP incorporating the technical, financial, Socio-economic and relevant aspects of the project development based on detailed survey and investigations.
  • Preparation of Bid Documents in accordance with FIDIC Contract.