A
We are facing load hunting every winter on one (out of four) GTG; GE-9E, DLN-1 fuel: sweet Gas, control by Mark-V TMR, In operation since 2004.
Hunting is only observed during cold weather i.e temp. <20deg C. load between 75MW and 85MW.
So-far we have tried following.
Replacement of IGV Moog valve.
Replacement of IBH control valve positioner.
replacement of IGV cylinder.
replacement of GCV and SRV moog valves.
All DLN control valve including IGV calibration.
comparison of IBH and IGV control constants with other identical units (found no difference).
For additional information please feel free to contact.
Thanks
Regards,
Ali
Hunting is only observed during cold weather i.e temp. <20deg C. load between 75MW and 85MW.
So-far we have tried following.
Replacement of IGV Moog valve.
Replacement of IBH control valve positioner.
replacement of IGV cylinder.
replacement of GCV and SRV moog valves.
All DLN control valve including IGV calibration.
comparison of IBH and IGV control constants with other identical units (found no difference).
For additional information please feel free to contact.
Thanks
Regards,
Ali