Gas turbine load problem
I am working in combined cycle power plant and recently i have faced a problem that is
we have 2 gas turbines and 1 steam turbine. Few days ago a dust strom and after that rain came and just after our one gas turbine load reduced approximatley 2 MW.
Reduced load turbine parameter are,
pressure drop just before and after filters= 70.3mmH20
compressor Inlet temperature= 28 C
Compressor discharge pressure= 13 barg
compressor discharge pressure= 408 C
If any body know the cause please comment. waiting for response.
Have you calculated the compressor efficiency before and after the storm? Is the compressor dirty?
Did the pressure loss across the filters go up?
Do you have a compressor water wash? Offline or on/offline?
GE mark VI speedtronic control machine
yes i have calculated compressor efficiency and i was just below to previous. no i is not dirty
yes the DP acorss filter is reduced
yes we have offline washing system.
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