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Upper Khimti-II

Upper Khimti-II Hydropower Project is a casacade RoR type of scheme located just d/s of Upallo Khimti Hydropower Project, 12MW located in Chuchure VDC of Ramechhap district of Nepal. The project components are located in right bank of Khimti Khola within Chuchure VDC. The project site was first identified by Himalaya Urja as a viable project with initial capacity of 3MW only on Q65% and later it was proposed to upgrade to 7MW. The project Upper Khimti II Hydropower Project (UKHP II) 7MW is immediately downstream of the powerhouse of the Upallo 12 MW project. The feasibility study defining 7 MW capacity was made on 2010 November carried out by Spark Consult (p) Ltd. The same was reference for power evacuation connection agreement, PPA reference and IEE study. The company is the process of obtaining generation lincese for the construction of the project after obtaining the financial closure with limited available time.

Upper Khimti-II Hydropower Project is located mostly in Chuchure VDC of Ramechhap distric of Nepal. The project area is located between longitudes 86o18'10" E and 86o20'10" E and latitudes 27o38' 20" N and 27o39' 55" N. The project components are located between elevations of 2002 m to 1855 m. The project site is accessible from Jiri in Mid-Hills Highway which is about 22km from Rasnalu Khimti Bridge. There is already completed access road up to the PH site of the project. There wll be requirement of road construction within project alignment and needs clearance and maintenance of the road for smooth transportation.

Salient Features of the Project

 

 

 

 

 

 

 

 

Project Location
  • Development Region:
  • Zone:
  • District:          
  • Headworks Site:       
  • Powerhouse Site:
  • Lattitude:
  • Longitude:
  
  • Central
  • Janakpur
  • Ramechhap
  • Chuchure VDC
  • Chuchure VDC
  • 27o38' 20" N and 27o39' 55" N
  • 86o18' 10" E and 86o20' 10" E 

Project Details
  • Water Source:
  • Type of Scheme:
  • Installed Capacity:
  • Gross Head:
  • Rated Design Head:
  • Design Plant Discharge:
  • (Upallo Project Tailrace Tapping):
  • (Khimti Khola):
  • Annual Energy Sales after Outage:
  
  • Upallo Project Tailrace Tapping and Khimti Khola
  • Run off River
  • 7.00 MW
  • 145.00 m
  • 131.52 m
  • (5.16+1.29) m3/sec
  • 5.16 m3/sec
  • 1.29 m3/sec
  • 42.291 GWh

Hydrology

  • Catchment Area:
  • Mean Annual Discharge:
  • Design Discharge:
  • Riparian Release:
  • Design Flood Discharge:
  
  • 73 Km2
  • 6.77 m3/ sec
  • 5.02 m3/ sec (40% of PoE)
  • 0.20 m3/ sec
  • 173 m3/ sec (100 Yr. Flood)

Head Work
  • Type of Diversion Weir:
  • Crest Length of Weir:
  • Crest Elevation:
  • Height of Weir:
  • Size of Under Sluice Gate:
  • Crest Level of Under Sluice:
  • Intake Type:
  • Size of Intake:
  • Sill Level of Intake:
  
  • Free flow Concrete Overflow Weir
  • 15.0 m
  • 2286.5 m
  • 3.0 m from River Bed
  • 3.0m * 2.0m (1 No.)
  • 2282.73 m
  • Side Intake
  • (3.8 m * 1.1 m) * 2 Nos.
  • 2281.20 m

Gravel Trap
  • Type of Gravel Trap:
  • Size:
  • Type of Approach Canal:
  • Length:
  • Size:
  • Longitudinal Slope:
  
  • Rectangular RCC
  • 9.0 m * 1.5 m * 2.0 m
  • RCC Rectangular
  • 3.0 m
  • 2.0 m * 1.5 m
  • 1 in 500

Desanding Basin
  • Type:
  • No of Chamber:
  • Dimension (L * B* H) m:
  • Particle Size to be settled:
  
  • Dufour Type, RCC
  • 2
  • 54.5 m * 5.4 m * 3.0 m
  • < 0.15 mm

Head Pond
  • Capacity:
  • Size:
  • 580 m3
  • 19.2 m * 8.55 m * (3.15 - 8.30 m)

Penstock
  • Type: 
  • Length:   
  • Internal Diameter:
  • Thickness: 
  
  • Steel Pipe (Supported)
  • 3,496.65 m
  • 1.7 m
  • 8 - 20 mm

Powerhouse
  • Type:
  • Size (L * B * H):  
  • Turbine Axis Level: 
  
  • Surface
  • 30.0 m * 11.5 m * 11.1 m
  • 1,997.03 m

Tailrace Canal
  • Type:
  • Length:   
  • Size (W * H):  
  
  • RCC Rectangular
  • 45.0 m
  • 1.5 m * 2.0 m

Turbine
  • Type
  • Number
  • Rated Output Capacity per Unit
  • Efficiency
  • Horizontal Axis Pelton
  • Two
  • 6250 kW
  • 92%

Governer
  • Type
  • Adjustment for Speed Drop
  • Electronic with PID Control
  • Between 0 to 5%

Generator
  • Type
  • Rated Output Capacity per Unit  
  • Power Factor   
  • Voltage 
  • Frequency
  • No of Units
  • Excitation System
  • Efficiency       
  • Synchronous, Three phase
  • 7510 kVA
  • 0.85
  • 11 kV
  • 50 Hz
  • Two
  • Brushless
  • 97%

Transformer
  • Type 
  • Rated Capacity
  • Voltage Ratio 
  • Efficiency
  • Outdoor, Oil Immersed
  • 5,000 kVA Single Phase * 3
  • 11/132 kV
  • 99.5 %

Transmission Line
  • Voltage Level  
  • Length (approx.)
  • Connection Point
  • Conductor
  • 132 kV
  • 2.5 km
  • Garjang Substation
  • ACSR "BEAR"
  • Total Cost of the Project
  • Project Completion Period
  • NRs. 1551.100 million
  • 36 months  from PPA

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