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- Regd.No : 356151/81/82
- Regd.No : 356151/81/82
Lohore Khola
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Lohore Khola hydropower project
| Project Name | Lohore Khola Hydropower Project |
| Location | Bheri |
| District | Dailekh |
| VDCs | Toli-5, Naumule-6 and Baluwatar -3 VDC |
| Geographical Coordinates | Latitude: 28° 53′ 43”N and 28° 54′ 47”N Longitude: 81° 47′ 16”E and 81° 49′ 08”E |
| Type of Scheme | Run off River |
| Source river | Lohore Khola, Padam Khola |
| Installed Capacity | 5 MW |
| Gross Head | 115.70 m |
| Rated Design Head | 111.42 m |
| Hydrology | |
| Catchment Area | 153.84 km² |
| River Type | Rain Feed, Perennial |
| 100 years Design Flood (HW) | 345.713 m³/s |
| Design Discharge (HW) | 5.43 m³/s |
| Compensation flow | 0.15 m³/s |
| Headworks | |
| 1. Weir | |
| Diversion Structure | Boulder weir |
| Length of Weir | 23.0 m |
| Weir crest Elevation | EL 1047.2 amsl |
| 2. Under-sluice | |
| Type | Concrete |
| No. of Gates | 1 nos |
| Undersluice | 2.5m x 2.5m |
| Sill Level | 1042.90 amsl |
| 3. Intake | |
| Intake Type | Gated side orifice intake with coarse trash rack |
| No. of Gates | 2 nos |
| Size of Opening (B x H) | 3.0 m x 2.2 m |
| Sill Level | 1044.31 amsl |
| 4. Gravel Trap | |
| Type | Gravity flushing type |
| Particle Size to be settled | 5 mm |
| Overall length | 20.0 m |
| Width | 6.60 m |
| Overall depth | 3.20 m |
| Particle size to be trapped | >2 mm |
| Design flow | 7.04 m³/s |
| Flushing flow | 0.64 m³/s |
| 5. Approach Canal | |
| Type | RCC Rectangular |
| Size | 2.5 m x 2.5 m (B x H) |
| 6. Desander | |
| Type | Single bay |
| Particle Size to be settled | 0.25 mm with 90% settling efficiency |
| Settling zone length | 48.0 m |
| Inlet transition length | 25.0 m |
| 7. Padam Diversion Scheme | |
| From Padam Tailrace syphon | Syphon size 1 m x 1 m |
| Transfer Pipe | 1.4 m diameter MS Pipe, 120 m long |
| 8. Headrace Pipe | |
| Total Length | 3750 m |
| Type | MS-Pipe (Buried and exposed section) |
| Diameter of Pipe | 1.80 m, 1.75 m, 1.73 m with thickness 7 mm |
| 9. Surge Tank | |
| Type | RCC and Steel tank |
| Size | 5.8 m diameter, 25.2 m height |
| Max Upsurge Level | 1055.50 amsl |
| Static Level | 1049.20 amsl |
| Normal Operating Level | 1045.43 amsl |
| Minimum Downsurge level | 1042.50 amsl |
| 10. Penstock Pipe | |
| Total Length | 178 m |
| No. of anchor blocks | 6 |
| No. of support piers | 35 |
| Type | MS-Pipe (Buried and exposed section) |
| Diameter of Pipe | 1.6 m, 1.15 m dia with varied thickness 8 mm to 12 mm |
| 11. Powerhouse | |
| Type | Surface/Buried, mild steel circular shaped |
| Dimension (L x B x H) | 27.32 m x 15.20 m x 10 m |
| PH Floor Level | 936 m amsl |
| Turbine centerline Level | 934.9 m amsl |
| 12. Tailrace | |
| Type | 1.5 m wide, 1.7 m high and 33.22 m long including TR-1 and TR-2 |
| Tailrace (L x B x H) | 33.32 m x 1.5 m x 1.7 m |
| Tailrace invert Level | 931.061 m amsl |
| Normal Tail water level | 934.20 m amsl |
| Maximum Tail water level | 935.00 m amsl |
| Minimum Tail water level | 933.50 m amsl |
| 13. Turbine | |
| Type | 2 Nos. Horizontal Francis |
| Rated Discharge for each Turbine | 2.71 m³/s |
| Rated Speed | 750 RPM |
| Turbine axis level | 934.90 m amsl |
| Rated Output for each Unit | 2500 kW +10% COL per unit |
| Rated Efficiency | 90% |
| 14. Generators | |
| Type | Synchronous brushless, 3Ø AC |
| Synchronous speed | 750 rpm |
| Rated Output | 3125 kVA each |
| Rated Frequency | 50 Hz |
| 15. Power Transformer | |
| Type | Step up power transformer |
| Rating | 6250 kVA, 6.6/33kV, 50 Hz |
| Cooling type | ONAN (Oil Natural Air Blast) |
| Connection | Delta/star |
| 16. Transmission & Interconnection | |
| Transmission Line | 33 kV single circuit, 11 km to Dailekh Substation |
| Conductor Size | 100 mm (“DOG”) |
| Connection with grid | NEA Substation-Dailekh |
| 17. Power and Energy | |
| Installed Capacity | 5 MW |
| Wet Saleable Energy | 22.54 GWh |
| Dry Saleable Energy | 4.91 GWh |
| Annual Energy | 27.45 GWh |