U.B.D.C. Hydro Electric Power House Stage I & II

U.B.D.C POWER HOUSES, STAGE-I & II (91.35 MW)

UBDC Hydel Project, one of the esteemed Run off river plants of Punjab, is consistently catering to Power needs of Punjab with its total installed capacity of 91.35 MW. This Hydel Electric Project has two stages with three Power Houses i.e. PH No. 1, 2 & 3 Stage-I & Stage II, constructed on UBDC Hydel Channel at Pathankot. The installed capacity of PH-1, 2 & 3 Stage-I is 3X15=45 MW and PH-1, 2 & 3 Stage-II is 3X15.45=46.35. Generation at all the Power Houses is done at 11KV and is stepped up to 132KV. All the Power Houses are interlinked through Double Circuit 132 KV lines. The Generated Power at this project is evacuated from UBDC PH-1 to UBDC PH2 and further to 132 KV Interlink Grid Substation at Sarna. 132 KV  Inter link Grid S/Stn Sarna also takes in the power from UBDC PH-3 and  further connected with 220 S/Stn sarna through 2 Nos 220/132 KV 100 MVA auto transformer and connected to 132 KV grid through 132 KV lines described as  under:

  1. From Power House-3, Sarna to Pathankot through 132 KV double circuit.
  2. From Power House-3, Sarna to Gurdaspur through 132 KV double circuit.
  3. From 132 KV Bus to 11 KV Bus through 132/11 KV 20 MVA T-3 Transformer and for further supply Power to Power houses and local distribution 11 KV system.

The  locations of Power Houses on  the channel are as under: –

Sr. No. Description UBDC Stage-I UBDC Stage-II
1. Capacity 3X15 = 45 MW 3X15.45 = 46.35
2. RD/ Locations PH-I 13500 ft./Madhopur
PH-II 24750 ft./Sujanpur
PH-III 40000 ft./Sarna
PH-I 13500 ft./Madhopur
PH-II 24750 ft./Sujanpur
PH-III 40000 ft./Sarna

Salient features of the UBDC

Sr. No. Description of the generating units UBDC Stage-I UBDC Stage-II
1. Rating of each unit 15 MW 15.45 MW
2. No. of units of each PH 3 Nos. 3 Nos.
3. Manufacturer 1 No. AEI ( UK )
2 No. BHEL
 All 3 No. BHEL
4. Turbine out put 21000 HP 21340 HP
5. Max Net Head 18.3 M 18.3 M
6. Min. Net Head 14.8 M 14.8 M
7. Rated Net Head 17.1 M 17.1 M
8. Discharge required per m/c for max. Generation 3625 Cs 3625 Cs
9. Type of turbine KAPLAN KAPLAN
10. No. of Blades 6 4
11. Dia. of Runner 3962 mm 3900 mm
12. Generator Voltage 11000 Volts 11000 Volts
13. Type of Generator Vertical Shaft Vertical Shaft
14. Normal speed 150 RPM 166.7 RPM
15. Direction of Rotation Clock wise Clock wise

DETAIL OF STEP -UP TRANSFORMERS

Power House No. of T/F both for stage -I &II Voltage Ratio in  use. Different capacity  in use.
(MVA)
No(s) in each capacity size. Aggregate capacity MVA.
 P.H.1 2 11/132KV 25 (Stg.1) 25( Stg.-2) 1
1
50
 P.H.2 2 11/132KV 20 (Stg.1) 20( Stg.-2) 1
1
40
 P.H.3 2 11/132KV 20 (Stg.1) 20( Stg.-2) 1
1
40
                                            Total 130 MVA

Commissioning dates of UBDC PHs

Power House Number Stage-I Stage-II
1 1. 30.08.1971 1. 06.08.1989
2 2. 24.05.1972 2. 26.06.1991
3 3. 12.04.1973 3. 01.01.1992

Further P.S.E.B (now PSPCL)  had to  incur  an expenditure of 18.28 crore through Pb. Irrigation department for re-modelling of escape channel at RD- 72720 to enhance its capacity from 1500 Cusses to 7200 Cusses. This work was  completed in 7/2004 due to which full  generation from UBDC PHs  became possible during lean period when Irrigation Indent is NIL.

GENERATION ACHIEVEMENTS (In MUs):

Year Actual Generation (In MUs)
UBDC Stage-I UBDC Stage-II Total Generation (MU’s.)
1988-89 206.51 206.51
1989-90 198.30 2.57 200.87
1990-91 152.91 47.82 200.73
1991-92 178.16 74.72 252.88
1992-93 144.83 122.81 267.64
1993-94 126.07 128.50 254.57
1994-95 133.75 154.00 287.75
1995-96 114.28 154.87 269.15
1996-97 131.84 142.37 274.21
1997-98 85.80 120.97 206.77
1998-99 131.07 124.83 255.90
1999-2000 137.35 181.42 318.77
2000-2001 155.89 190.16 346.05
2001-2002 114.11 206.28 320.39
2002-2003 168.90 224.87 393.77
2003-2004 190.90 236.54 427.44
2004-2005 171.27 208.40 379.67
2005-2006 250.14 280.49 530.63
2006-2007 158.711 225.891 384.602
2007-2008 184.281 243.751 428.032
2008-2009 140.70 198.85 339.55
2009-2010 142.00 194.60 336.60
2010-2011 165.62 244.38 410.00
2011-2012 138.90 156.56 295.46
2012-2013 142.668 175.769 318.437
2013-2014 194.775 166.849 361.624
2014-2015 155.95 227.92 383.87
2015-2016 116.39 203.61 320.00
2016-17 122.63 219.42 342.05
2017-18 151.82 257.270 409.090
2018-19 104.890 270.731 375.621
2019-20 198.187 273.702 471.889
2020-21(upto 02/21) 141.833 252.250 394.083

Note: UBDC Project achieved record generation of 530.62 MUs & 471.889 MU in the year 2005-06 and 2019-20  respectively.