智能型断路器区域选择性联锁技术的实现

Realization of Intelligent Breaker’s Zone Selective Interlock Technology

区域选择性联锁技术作为智能型断路器的功能之一,能很好地解决短路保护的级间选择性问题,从而有效地提高配电系统的安全性和可靠性。介绍了Maste-pact MT和Compact NSX断路器之间的ZSI接线方案及ZSI的动作原理,并分析了在不同故障状态下断路器的动作情况。

Zone selective interlock technology as one of the function of intelligent breaker could solve the interstage selective problem of short circuit protection so as to improve the safety and reliability of power distribution system. The ZSI connection scheme between Masterpact MT breaker and Compact NSX breaker and its action principle were introduced. Under different fault, the action condition of breaker was analyzed.