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After synchronizing the running generator with grid, the avr getting tripped and the generator breaker also oettong tripped, before tripping the avr the pf meter of generator is showing leading pf please kindly give a suggestion to rectify this problem.
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Answer Posted / k.prakashchandra
If AVR trips UCB has to trip either for LOE(loss of excitation ) or reverse power .Leading pf indicates gen voltage lower than grid voltage . Check the measuring PTs. Is is better to synchronize manually before resorting to Auto. Check the synchroscope also
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