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We have two General Electric MS-5001P/Frame-5 Gas Turbines of 18MW each capacity installed at our fertilizer plant for power generation. One of these turbines runs on Isochronous mode with SpeedTronic Mark-II Control system while the other runs on Droop mode with SpeedTronic Mark-V Conrol system.
Recently we faced a problem on our Isochronous turbine. Accidental tripping of 51-V-3 (Over current with voltage restraint relay) resulted in opening (tripping) of both Bus-Tie breaker 124-2 (52 T) and Generator breaker 52G in the generator panel.
The turbine also tripped on the following causes:
1- Over speed Trip
2- Exhaust Temperature High
Why did the turbine tripped on the above causes?
We believe that the turbine should have continued running on FSNL under this scenario.
Please give your expert opinion on the subject problem.
Recently we faced a problem on our Isochronous turbine. Accidental tripping of 51-V-3 (Over current with voltage restraint relay) resulted in opening (tripping) of both Bus-Tie breaker 124-2 (52 T) and Generator breaker 52G in the generator panel.
The turbine also tripped on the following causes:
1- Over speed Trip
2- Exhaust Temperature High
Why did the turbine tripped on the above causes?
We believe that the turbine should have continued running on FSNL under this scenario.
Please give your expert opinion on the subject problem.