Khara Hydro Electric Power Station, Uttar Pradesh

Installed capacity - 72 MW (3 x 24 MW)

No. of units - 3




Sailent Features

Design Discharge 198.3 Cumecs (7000  Cusecs)
Power Channel & Tunnel
Capacity
Bed Width
198.3 Cumees
10.5 Meters
POWER STATION
Location At 13.087 Km. Of Power Channel
F.S.L. Upstream of P.H. R L 377.774 Meters
Installed Capacity 72.M.W
F.S.L. d/s of Power Station
(Corresponding to M.P.L. of 334.32 at New Tajewala Barrage)
R.L. 334.20 Meters
Net Head 42.954 M. Say 43 Meters
TURBINE
1. Name of Manufacturer M/s BHEL
2. Type of turbine Francis
3. Rated Output Turbine at rated Net head 42.6 M. 24870.5 Kw
4. Max. Output Turbine at Max. net head 45 26113.5 Kw
5 (a) Efficiency & discharge for various output at rated net head...
Output (K.W.)
Efficiency
Discharge
24870
92.6%
64.30 m3/Sec
19896
91.8%
51.92 m3/Sec
14922
86%
41.56 m3/Sec
5(b)   Weighted Guaranteed efficiency 90.88%
1 NORMAL SPEED 187.5 rpm
2 Specific Speed at the design head of 43.6 m 316.8
3 Maximum runway speed rating of the Generating Units 370 rpm
4 Weight of Turbine Rotating Parts 26 Tonnes
Runner Shaft
Material Stainless Steel
Welded or cast Cast Welded
Composition of Stainless Steel 13% Cr. - 4% Ni.
No. of Blades 14
Material Carbon Steel C-40
Weight 9 Tonnes
Diameter 600 mm
Lenght 3850 mm
Main Guide Bearing
(a) Type of (Cylindrical) Pivoted Pad Pad Type
(b) Composition of lining material Babbit
(c) Lubrication Turbine Oil Servo Prime 57 of IOC
(d) Amount of Lubrication in one filling 350 Ltr
(e) Maximum Temperature of Oil 65 °C
Generator
Name of Manufacturer M/s B.H.E.L.
Type of Generator Umbrella-Vertical Shaft, Salient Pole Closed air circuit ventilation machine with water cooled air cooler
Normal Voltage betwenn phases 11000 Volts +5%
Normal Synchronised speed (for a system frequency of 50 Hz) + 3%lag
187.5 RPM
Output Under Condition of

 

a) 11 KV, 0.9PF Lag 26670 KVA
b) Max. Cont. Overload 28000 KVA
Generator Reactance (PU)
Subtransient reactance direct axis Xd 0.184
Negatice phase sequence reactance 0.24
Cost Estimate
Cost of Project 22500 Lacs apprx.
Power Benefits
(a)
Pre Llakhwar Project
i-
Total energy output for 90% availability 385.14 x106(KWH)
ii-
Cost of Generation 53.27 Paise/KWH
iii-
Revenue Return 7.02%
(b)
Post-Lakhwar Project
i-
Total energy output for 90% availability 435.61 x 106(KWH)
ii-
Cost of Generation 47.10 Paise/KWH
iii-
Revenue Return 8.23%
Khara Power House
Unit wise details of the machine as per name plate for both Turbine and Generator....
Hydro Generator- B.H.E.L Hardwar year 1986, Specification- 15:4722:1968, Serial No. - 20140.A. 23101
Stator
Rotor
KW - 24000
Volts- 170
PF - 0.9LAG
Amp - 737
KVA - 26670
RPM - 187.5/370
Volts - 11000
HZ - 50
Amps - 1400
Phase - 3
  Connection - Y
  Rotation - Clockwise
  Insulation Class - B
  Type - SV 675/95-32
Hydro Turbine
1
Type RA 75/728b
2
Rated Speed 187.5RPM
3
Rated Head 42.6M
4
Rated Output 24MW
5
Plant Order No. 20139 -A-202-01
6
Year of Manufacturer 1986
General information in respect of generation from the Units and Auxiliery Consumption.
Sl.No.
YEAR
GENERATION
MU
AUXILIARY CONSUPTION
MU
1
2001-02
308.4899
0.495
2
2000-01
344.10997
0.506
3
1999-2000
330.7708
0.430
4
1998-1999
456.0144
0.421
5
1997-1998
396.36882
0.364
Khara Power House
Single Line Diagrame Showing Energy Exchange Points
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