摘要
220 kV及以上电压等级线路必须合理设计并配置断路器本体三相不一致保护。分析显示,本体三相不一致保护出口跳闸时,如果合闸回路有触点粘死,会导致断路器发生多次"跳跃"现象。从原理上分析断路器本体三相不一致保护与操作箱防跳回路之间的配合问题,并提出相应的改进措施和建议。
It is necessary to rationally design and deploy three-phase inconsistent protection for the circuit breaker body of 220 kV and above voltage transmission lines. Analysis in this paper shows that when the protection outlet trips, and at the same time the hand contact is stuck, ＂repeated jumps＂ will occur at the circuit breaker. The matching between the three-phase inconsistent protection and the anti-bounce loop in operation box is analyzed, and corresponding improvement measures are proposed.
出处
《南方电网技术》
2012年第4期72-75,共4页
Southern Power System Technology
关键词
断路器
三相
跳跃
继电保护
breaker
three-phase
jump
relay protection
