一起罕见的220kV母线相继故障继电保护动作分析

结合解析母线保护和线路保护的动作行为,解读故障录波的波形数据等,对一起罕见的220 kV母线相继故障进行了分析。采用一次系统故障演变和继电保护动作时序相结合的分析方法,得出了本次母线相继故障形成和发展的机理,对母线故障中母线保护、线路对侧纵联保护和故障录波的动作行为进行了评价。

Analysis to the behavior of protections in an unusual successively fault occur on a 220 kV busbar

Combining with the resolution of behaviors of the busbar and line protections,an unusual successively fault accident on a 220 kV busbar is analyzed in his paper.Base on the research to evolvement of the primary fault,and the operations sequence of the protections,the mechanism involved in this successively fault is brought out.In addition,behaviors of the protection,line pilot protections and form recorders are appraised also.