| 1. PLANT |
| |
Type |
Run-of-River |
| |
Capacity |
24.0 MW |
| |
Gross Head |
99.50 m |
| |
Design Discharge |
29.50 m3/s |
| |
Discharge at 15% Over Load on Rated Capacity |
34.74 m3/s |
| 2. LOCATION |
| |
Longitude |
76° 32' 07" to 76° 35' 44" |
| |
Latitude |
32° 28' 42" to 32° 28' 36" |
| |
State |
Himachal Pradesh |
| |
District |
Chamba |
| |
Stream |
Budhil, a tributary of Ravi river |
| |
Vicinity |
Near Bharmour Town |
| 3. HYDROLOGY |
| |
Catchment area at diversion |
471 km2 |
| |
50 year Return Period Flood |
2100 m3/s |
| |
100 year Return Period Flood |
2315 m3/s |
| |
10-Dily Average Discharge with 90% Dependability |
7.02 m3/s |
| |
10-Daily Average Discharge with 75% Dependability |
9.08 m3/s |
| |
10-Daily Average Discharge with 50% Dependability |
14.58 m3/s |
| |
Discharge for Ecological & Environmental Release |
0.64 m3/s |
4. HEAD WORKS |
| a. DIVERSION STRUCTURE |
| |
Type |
Barrage |
| |
Maximum Flood Level |
El. 1843.50 m |
| |
Average River Bed Level at Barrage Axis |
El. 1827.00 m |
| |
FRL |
El. 1835.50 m |
| |
Crest Level of Spillway Bays & Under-sluice bay |
El. 1827.00 m |
| |
No. of spill way bays |
4 |
| |
No. of undersluice bays |
1 |
| |
Size of Spill Way Bays each |
5.5 m (W) x 8.5 m (H) |
| |
Size of undersluice Bay |
5.5 m (W) x 8.5 m (H) |
| |
Thickness of Pier & Divide Wall |
2.0 m |
| |
Total Length of Barrage between Abutments |
37.5 m |
| |
Type of gates |
Radial Gates |
| |
Energy Dissipation System |
Stilling Basin |
b. INTAKE STRUCTURE |
| |
Trash Rack |
2 No. Vertical, 6.0 m (W) x 5.0 m (H) |
| |
Type |
Rectangular, Bell mouth entrance type |
| |
Intake Gate |
2 No. vertical lift gate, 3.0 m (W) x 4.0 m (H) |
| |
Design Discharge |
35.40 cumec (29.50 + 20% Silt Flushing Discharge) |
| c. DESILTING ARRANGEMENT |
| |
Type |
Surface Desilting Chambers |
| |
No. & Size of each Desilting Chamber |
2 Nos., each 80.0 m (L) x 10.0 m (W) x 11.5 m (effective depth, H) |
| |
Particle size to be Excluded |
0.20 mm and above |
| |
Design Discharge |
35.40 m3/s (including 20% Flushing discharge) |
| |
Flow Through Velocity |
0.18 m/s |
| |
Settling Velocity |
0.024 m/sec |
| |
Valve for Flushing Conduit |
1200 mm |
| |
Silt Flushing Pipe |
1200 mm Ø Circular & 30 m length |
d. COLLECTION POOL AFTER DESILTING BASIN |
| |
Invert Level |
El. 1823.00 |
| |
Size of Collection Pool |
21.0 m (L) x 12.0 m (W) x 13.2 m (H) |
| |
MDDL |
El. 1830.20 m |
| |
FSL |
El. 1835.00 m |
5. HEAD RACE TUNNEL |
| |
Type and Size |
Concrete Lined, D - Shaped, 3.6 m Dia Finished. |
| |
Velocity |
2.52 m/s |
| |
Length |
2485 m |
| |
Design discharge |
29.50 cumec. |
| |
Average Slope of Tunnel |
1 in 132 |
6. ADITS |
| |
Adit-I (for HRT Construction) |
D-Shaped, 4.0 m dia Finished & 60 m long |
| |
Adit-II (for HRT Construction) |
D-Shaped, 4.0 m dia Finished & 115 m long |
| |
Adit-III (To Bottom of Surge Shaft) |
D-Shaped, 4.0 m dia Finished & 85 m long |
| |
Adit-IV (To Penstock Trifurcation) |
D-Shaped, 4.0 m dia Finished & 64 m long |
7. SURGE SHAFT |
| |
Type |
Restricted Orifice |
| |
Size of Surge Tank |
10.0 m Ø Circular & 59.80 m Height |
| |
Size of Orifice |
1.8 m Ø Circular Orifice at Bottom |
| |
Invert Level of Surge Tank |
El. 1809.30 m |
| |
Top Level of Surge Tank |
El. 1864.00 m |
| |
Max. Upsurge Level |
El. 1856.15 m |
| |
Min. Down Surge Level |
El. 1816.88 m |
8. PRESSURE SHAFT |
| |
Type |
Underground |
| |
Size Main |
1 No. 2.8 m dia, 33.0 m long Horizontal & 90.0 m long vertical pressure shaft |
| |
Branches |
3 nos., 1.65 m dia, 21 m each (average length) |
| |
Velocity in Main |
4.79 m/s |
| |
Velocity in Branch |
4.60 m/s |
| |
Type & thickness of steel liner |
SAILMA 350, 12 mm to 24 mm thk. |
9. POWER HOUSE |
| |
Type |
Surface |
| |
Installed Capacity |
24.0 MW (3 x 8.0 MW) |
| |
Size of Power House including Service Bay |
56.0 m (L) x 15.0 m (W) x 22.0 m (H) |
| |
Size of Control Room |
56.0 m (L) x 6.00 m (W) x 4.50 m (H) |
| |
Service bay Level |
El. 1737.00 m |
| |
Gross Head |
99.50 m (1835.50-1736.00) |
| |
Total Head loss (on rated discharge = 29.5 m3/s) |
6.50 m |
| |
Rated Net Head |
93.0 m (99.50-6.50) |
| |
Maximum Net Head |
100.57 m (1835.5-1734.15-0.78) |
| |
Minimum Net Head |
90.74 m (1835.50-1736.30-8.46) |
| |
C/L of Turbine |
1733.40 m |
| |
Crane beam level |
1745.00 m |
| |
Normal TWL |
1736.00 m |
| |
Draft Tube Gates |
3 No. vertical lift gate 2.4 m x 2.1 m |
10. TAIL RACE CHANNEL |
| |
Tail Pool |
3 nos, 2.4 m wide draft tubes merges into one common tail pool of Size 4.0 m Wide |
11. INTAKE POOL FOR BHARMOUR STAGE-II HEP |
| |
Size of Intake Pool |
24.05 (L) x 15.0 (W) x Depth Varies from 2.15 m to 11.50 m |
| |
FSL |
El. 1735.50 m |
| |
MDDL |
El. 1733.80 m |
12. TURBINES |
| |
No. & Type |
3 Nos., Horizontal Francis |
| |
Rated Power |
8.0 MW of Each Unit |
| |
Overload capacity |
15 % |
| |
Rated Net Head |
93.00 m |
| |
Design Discharge |
9.83 cumec. Of Each Unit |
| |
Speed |
428.6 RPM |
13. MAIN INLET VALVE |
| |
Type |
Butterfly Valve |
| |
Diameter |
1500mm |
| |
Design Head |
132 m |
| |
Location |
Power House Cavern |
14. GENERATOR |
| |
Type |
Horizontal Shaft, Salient pole synchronous generator |
| |
Number |
3 |
| |
Rated Capacity |
3 X 8.0 MW |
| |
Overload Capacity |
15 % COL |
| |
Synchronize Speed |
428.6 rpm |
15. SWITCH YARD |
| |
Type |
Surface Switch Yard |
| |
Area |
75.0 m X 35 .0 m |
16. TRANSMISSION LINE |
| |
132 kV D/C Harsar I - Bharmour Pooling Station Transmission Line (Ring Main Scheme) |
10.80 km |
| |
220 kV S/C from Bharmour Pooling substation near Budhil dam (on left bank D/s of Budhil dam) to interconnecting point with existing 220 kV line near Budhil PH |
8.00 km |
| |
220 kV S/C Stringing on Connecting Point- Chamera III Transmission Line |
20 km |
