WBPDCL Technical News

Unit#5 (STPS) Generator got damaged due to 100% Stator Earth Fault Protection on 26.05.2017

Santaldih Thermal Power Station of West Bengal Power Development Corporation Limited is a power station with an installed capacity of 500 MW (2×250 MW). Unit#5 (250 MW) got tripped in the morning on 25.05.17 due to Generator 100% Stator earth fault protection. After necessary checking, again Unit was synchronized in the evening. But after 1:30…..

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Generator Transformer # 4 (250 MVA, 15.77/420 KV) Failure at KTPS on 15/09/2014

  Our Generator Transformer#4 (250 MVA, 15.77/420 KV, YNd1, SL no 600490, Year of MFG-1994, Elect Spec No- 600717, OFF load Tap changer with 5 Taps, Make BHEL, BHOPAL) which we have to de-synchronize from the grid due to appearance of Buchholz alarm at around 10.55 hrs on 15.9.2014. All the electrical test result found…..

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Fire Hazard at Auto Transformer-II, KTPS on 12/05/2014

At around 16:40 Hrs on 12th May 2014, Auto Transformer-II (220/132/33 KV), KTPS failed with the initiation of Differential Relay (87). The trouble was accompanied by huge fire hazard & bursting of bushings. The fire was so heavy that it created panic all round. However, KTPS Engineers took prompt action by diverting the reserve sources…..

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AOP1 pump failure in UNIT#6,STPS on 3rd April 2014

           During Turbine rolling (1073 rpm) at 14:26 HRS on 3rd April 2014, Unit#6 Turbine tripped through lub oil pressure very low. It was observed that turbine lub oil pressure had falling tendency & lub oil strainer getting choked frequently as well as motor current of AOP1 (Running HRS of AOP1 : 2240) hunted from…..

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Fire Hazard at Unit # 5, STPS on 04/12/2013

Prior to the incident Unit #5, STPS was running with restricted load at 175 MW due to TG bearing vibration high. Four mills operation had been carried out & no secondary fuel oil support was required at that time.       At around 21:00 hrs during routine check-up by the operating personnel, it was…..

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Inter Turn Fault in rotor winding of UNIT#2, SGTPP

On 08/11/12 UNIT#2, SGTPP tripped due to fault in outgoing feeder and the generator swings around 50 sec. After synchronization shaft vibration was found very high which come down to normal value with next tripping but the generator field current became higher around   300 Amps compared to earlier similar load.     RSO (Recurrent Surge…..

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Non-availability of ID Fan-6A at STPS

Due to high vibration leading to severe bearing and shaft damage from 29.05.2012 to 19.09.2012. ID Fan-6A Inlet Guide vane found dislodged from the operating power cylinder.   Unit#6 (STPS, Santaldih, Purulia) tripped at 9:50 Hrs on 29thMay’12 through MFT(Furnace Pr. V. High)due to failure of ID fan 6A with high bearing vibrations (DE :…..

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Non-availability of Unit#6, STPS Turbine due to high vibration and blade failure

Non-availability of Unit # 6 Turbine due to high vibration and blade failure of HP Impulse stage from 31.05.2012 to 16.12.2012        

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The Power Plant Training Simulator at BkTPP

Power Plant Training Simulator at Bakreswar Thermal Station of WBPDCL is supplied by GSE Power System Inc., USA. Its main features are : Full size replica of control room of BkTPP Unit # 1. Workstation computers (8 nos.) as soft panel. Conventional hard panel. • PLC for interfacing between soft panel & hard panel. •…..

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