一种GIS故障快速定位方法

A New Method of Rapid GIS Fault Location

GIS因其诸多优点近年来获得了广泛应用,与此同时,GIS发生故障时,故障点的查找、隔离及电网恢复都比敞开式设备复杂。通过分析GIS故障时的保护动作行为以及母线故障零序电流的分布特点,提出了一种GIS故障快速定位方法,该方法采集信息少、分析简便。通过2起GIS母线故障案例验证了该方法的有效性,发现通过该方法,可缩小故障查找范围,尽快恢复系统安全稳定运行。

Due to its advantages,GIS （gas insulated switchgear） has been widely used in recent years. Mean-time fault point location, separation of GIS and power grid restoration are more complicated than that of open type devices in the case of faults. By analysis on the behavior of protection action and distribution characteris-tics of zero-sequence fault bus current,a rapid GIS fault location method is proposed,which collects less in-formation and is simple and easy for analysis. Through two examples of bus faults,the method is proved ef-fective 曰 besides,the method can narrow fault detection range and restore operation safety and stability of the system as quickly as possible.