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    ABB UNITROL 6080 AVR & GE Mark VIe control system response in voltage build up after short-circuit fault is cleared

    Hi, We have a 31.25 MVA, 11kV, 50 Hz generator driven by frame 5 GE gas turbine. The generator operates in Islanding mode. Today , a three phase short circuit happened at one the outgoing feeders at 11 kV. This resulted in high short circuit of magnitude -4400 Amp, and the circuit breaker of...
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