Abstract :
This paper explains on how the replacement of the step-up grid transformers at Cruachan power station was achieved with the least impact to the supply. The approach taken was to address a safety issue and minimise the impact of the transformer fault on the overall generation production from Cruachan using a sound engineering assessment of the fault and risk of failure through routine monitoring of the fault through dissolved gas analysis. The result has been to leave the power station with a reduced risk of failure in the future given the ability to have one transformer out of service while generating through the other unit
Keywords :
condition monitoring; failure analysis; maintenance engineering; power generation faults; power generation reliability; pumped-storage power stations; risk management; 16 kV; 278 kV; 440 MW; Cruachan power station; SGT1; SGT2; dissolved gas analysis; phase segregated busbars; pumped storage power station; replacement; risk reduction; routine monitoring; safety issue; step-up grid transformers; transformer fault;
