Analysis of Abnormal Issues Caused by Improper Configuration of 500 kV Circuit Breaker Anti-trip Relay
The anti-trip function of a circuit breaker is an important protection feature designed to prevent repeated"tripping"caused by faults when the circuit breaker closes,thus avoiding further faults in the breaker or expanding power grid accidents.However,the anti-trip function cannot be achieved by the anti-trip relay alone but requires cooperation with auxiliary contacts of the circuit breaker,the breaker's own operating time,and other factors to fully realize the anti-trip functionality.Proper configuration of the anti-trip relay is crucial based on the characteristics of different circuit breakers.
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