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Agrahara Mini Hydel Scheme II 550 kW
Location
1 State Karnataka
2 District Raichur
3 Taluk Devadurga
4 Canal D18 of NRBC
5 Location of D18 On left bank at Ch: 94.960 KM of NRBC
6 Nearest Village Agrahara (2km) on right bank.
7 Nearest Town Devadurga (10km)
8 Nearest City Raichur
9 Air- Port Bangalore - About 450 km
Hyderabad  - About 200 km
Purpose of the Project
1 Purpose of the Project Generation and Transmission of Hydro Electric Power
Installed Capacity
1 Installed Capacity 1 x 925 kW
Annual Energy Generation
1 Annual Energy Generation 5.28 GWHr
Power Studies
1 Minimum Design Power Discharge 2.865 cumecs/ Unit, at rated head
2 Maximum Design Power Discharge 9.55 cumecs / Unit
3 Overload 10%
4 Maximum Discharge 10.51 cumecs / unit
Diversion Weir
1 Location Weir across D18 CH:4880.0m, near upstream of Drop 2
2 Type Gated, Gravity section built out of mass concrete
3 FRL El 436.50 m
4 Weir Crest El 435.50 m
5 Top of NOF 437.40 m
6 Deepest Foundation level El 429.96 m
7 Height of the Weir up to crest (from deepest foundation level) 5.54 m
8 Length of Overflow Section 7.2 m
Non Overflow Block
1 Left 10.79 m
2 Middle 14.49 m
3 Right 13.76
  Total of NOF 39.04 m
Intake
1 No of Vents 1
2 Vent Size 4.113 m x 2.623 m
3 Sill Level 429.19 m
4 Hoist Bridge Level 437.40 m
5 Gates  
  (a) Service Gate  
  Nos. 1
  Size 4.113 m x 2.623 m
  Type Vertical lift roller gate
  Hoist Under Slung Monorail
  (b) Stop log Gate  
  Nos. 1
  Size 4.113 m x 8.49 m
  Type Vertical lift roller gate
  Hoist Under Slung Monorail
  (c) Trash Rack  
  Nos. 1
  Size 4.113 x 8.49 m
  Hoist Under Slung Monorail.
Power House
1 Location On right bank of D18 near drop 2 at Ch: 4900m
2 Type Surface type
3 Size of Machine Hall (Outer to Outer) 8.90 m x 14.132 m
4 Size of Service Bay 8.90 m x 4.00 m
5 Control Room 5.45 m x 14.132 m
6 No. of Bay 1 unit bay and one Service bay
7 No. of Units and Capacity 1 Unit of 925 kW
8 El. of Turbine C/L El 425.263 m
9 Generator Floor Level El 426.863 m
10 Control Room, Service/Equipment handling Bay Level Floor Level El 431.00 m
11 Draft Tube floor Level El 422.34 m
12 Max TWL El 425.292 m
13 Min TWL El 424.416 m
Tail Channel
1 Length 1073.00 m
2 Max. TWL 425.292 m
3 Bed Width 3.20 m
4 Side Slopes 1:1.25
5 Design Discharge 9.55 cumecs
6 Bed Slope 1 in 5000 (appx)
7 Bed Levels Varying from 423.457 m to 423.242 m
Turbines
1 Type Vertical Kaplan
2 Rated Output 925 kW
3 Rated Head 10.71 m
4 Rated Discharge per unit with COL 10.51 cumecs
Out Door Yard
1 Size 16.00 m x 38.00 m
2 No. of Power Transformers 1
Transmission Lines
1 Terminal Point KPTCL 33KV sub-station at Arekere
Implementation Period
1 Implementation Period 12 Months
 

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