断路器操作回路中防跳继电器灵敏度的选择

断路器的防跳回路可有效防止断路器多次跳合，以保护设备和系统的安全。在工程施工中，时常遇到控制回路设计时对断路器与防跳继电器参数配合选择不当情况，分析了采用综合考虑防跳继电器动作的可靠性、灵敏度，正确选择防跳继电器的方法。断路器操作箱防跳继电器存在出厂最小起动电流太小的问题，同时在运行变电站直流接地、交流电穿入直流系统等异常现象的发生不可避免，通过现场反复模拟试验分析，指出为防止发生直流接地、交流电穿入直流系统等异常情况时长电缆电容充放电使断路器发生误跳，必须降低防跳继电器动作的最大灵敏度。

Selection of the skip-prevention relay sensitivity in the circuit breaker control circuit

The use of anti-bouncing relay of the circuit breaker can ensure a safe operational situation for equipments and the whole power system by preventing circuit breakers from abnormal bouncing effectively.It occurs repeatedly,in the course of substation construction,that the parameter of circuit breaker and anti-bouncing relay can not match perfectly due to misunderstanding in designing process.This paper explores and analyses an effective way to determine the parameter of anti-bouncing relay by taking reliabi...