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Also if I understand well your incident is a bit different. In IEEE 492 it is considering asynchronous machine and not regular synchronous self excited generators with cylindrical poles (depending on engine usually 10 or 12)and diesel engine as prime mover: Reference: General recommendations...

@Mr Muthu: But this is for hydro generator and I don’t know how hydro is working as prime mover… For a gen set of 6 DGs, the prime mover, in any case even without excitation, will rotate close to synchronous speed. Is it the same for a hydro? Is it in hydro that you have severe difference of RPM...

Very nice input and experience Mr Muthu! Basically as I thought and expected actually confirmed in real incident! Appreciated!

Agree that reactive power will be drawn from network from other connected genset of course. Voltage fluctuation are expected but I don’t know if the other power plant gen sets will trip considering 5 more genset running in parallel of same rating. I suspect not… Excitation breaker is closed but...

Hello all, I am new to group. I am experiencing a design problem where in case of failure of protection relay of a High voltage circuit breaker of synchronous generator, the breaker remains closed (since protection relay is in failure, of course no protection is active and breaker cannot be...