presentation on jamshoro power company limited (jpcl)
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POWER GENERATION INDUSTRY OF PAKISTAN
Total installed Capacity : 22477 MW
Thermal Power Generation: 15454 MW (67.7 %)
Hydel Power Generation: 6556 MW (28.7 %)
Nuclear Power Generation: 787 MW (3.5 %)
(Source : HCIP, 2012, Pakistan energy yearbook, pp.81)
GENCOs: 4,720 MW (30.55 %)
KESC: 2,381 MW (15.4 %)
Private sector (IPPs) 8,353 MW (54.05 %)
(Source : HCIP, 2012, Pakistan energy yearbook, pp.81)
THERMAL POWER GENERATION INDUSTRY OF PAKISTAN
Ideal Rankine cycle
1-2 Isentropic compression on pump
2-3 Constant pressure, heat addition in a boiler
3-4 Isentropic explanation in a turbine
4-1 Constant pressure heat rejection in a condenser
Described in 1859 by the Scottish engineer William J.M. Rankine
FACTORS AFFECTING THE RANKINE CYCLE PERFORMANCE
1. Lowering the condenser pressure (Lowers Tlow, avg)
FACTORS AFFECTING THE RANKINE CYCLE PERFORMANCE
2.Superheating the steam to high temperatures (Increases Thigh, avg)
FACTORS AFFECTING THE RANKINE CYCLE PERFORMANCE
3. Increasing the boiler pressure (Increases Thigh, avg)
Commissioning 1988-91.
Installed capacity 880 MW
De-aerated capacity 710 MW
Unit # 1 250 MW , Oil Fired
Unit # 2, 3&4 210 MW each , Oil
& gas (dual) fired
INTRODUCTION OF THERMAL POWER PLANT JAMSHORO
UNIT # 2,3&4 (CHINESE)
Type : Subcritical, reheat type (N210-132/538/838)
Fuel: Furnace oil & natural gas (CH4) Capacity: 210 MW Net plant efficiency: 32.30 % Main steam flow : 680 t/h Main steam pressure: 132 kg/cm2
Main steam temperature: 538 0C Reheat steam pressure: 24.5 kg/cm2
Reheat steam temperature: 538 0C Condenser pressure: 11.23 kPa
Plant description (designed condition)
6.6 kV auxiliaries
1. Boiler feed water pumps 03 (02 in operation and 01 on
standby)
2. Condensate pumps 03 (02 in operation and 01 on
standby)
3. Circulating water pumps 03 (02 in operation and 01 on
standby)
4. Forced draft fans (02 in operation)
5. Induced draft fan (02 in operation)
6. Gas recalculating fans (02 in operation)
INTRODUCTION OF MAIN PLANT COMPONENTS
Type: Reheat condensing tandem compound Three cylinders HPT (12 stages,1 impulse & 11 reaction) IPT(10 stages, reaction) LPT(10 Stages reaction) 3000 rpm 08 no of extractions/bleeding
Steam turbine
Boiler
Type: Vertical, balanced draught furnace,
corner fired
Fuel: Oil, gas and both (dual)
Capacity: 680 t/h
Flue exhaust temperature: 140 0C
Air flow : 583250 Nm3/hr
Condenser
No of tubes : 18000
Two sides (A/B)
Vacuum: 682 mmHg
Tube material: Copper & S.S
CW flow: 26000 t/h
Pumps
Condensate pump
Boiler feed pump
CW pump
LP heater drain pum
Stator cooling water pump
BCW pump
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