We have a dual fuel frame 5 gas turbine driving a generator (25 Mw). The circuit breaker got tripped while the turbine was running on gas fuel causing site shutdown, then it transferred automatically to liquid mode due to fuel gas compressors trip after shutdown.
-The annunciator alarm was Turbine Under speed.
-The turbine control system is SPEEDTRONIC MARK II.
-reclosed the circuit breaker again successfully.
What could be the reason of underspeed action?
-The annunciator alarm was Turbine Under speed.
-The turbine control system is SPEEDTRONIC MARK II.
-reclosed the circuit breaker again successfully.
What could be the reason of underspeed action?