Hello all !
In one of gas turbines (frame-V, 19.6 MW with mark-VIe control system) of our co-generation plant (with three gas turbines), today we have observed sudden change in lube oil header temperature from 64 deg C to 71 deg C, when the GT was running at a load of 19 MW. Other two gas turbine header temp remained same though the cooling water to all the gas turbine comes from the same cooling tower. We have checked it's cooling water pressure did not change and the operation of the main cooling Tower also remained same. The set temp of alarm is at 74 deg C and tripping at 79 deg C. Being electrical guy in operation, I was unable to understand this phenomena. May the esteemed forum please give some clue as to what should we check to troubleshoot about this issue .....thanks
In one of gas turbines (frame-V, 19.6 MW with mark-VIe control system) of our co-generation plant (with three gas turbines), today we have observed sudden change in lube oil header temperature from 64 deg C to 71 deg C, when the GT was running at a load of 19 MW. Other two gas turbine header temp remained same though the cooling water to all the gas turbine comes from the same cooling tower. We have checked it's cooling water pressure did not change and the operation of the main cooling Tower also remained same. The set temp of alarm is at 74 deg C and tripping at 79 deg C. Being electrical guy in operation, I was unable to understand this phenomena. May the esteemed forum please give some clue as to what should we check to troubleshoot about this issue .....thanks