一起 GIS 断路器合闸机械特性异常原因分析

Cause Analysis on Abnormal Mechanical Characteristics of Closing Operation of A GIS Circuit － breaker

摘要:

针对某变电站 220 kV GIS 断路器合闸时间及不同期时间严重超标、合闸速度偏低问题，通过对设备异常现象 进行剖析，结合现场验证，准确找到 GIS 断路器合闸机械特性异常原因; 同时，根据现场实践经验，提出了运维检修预 防性措施，为类似结构 GIS 断路器的运行维护提供参考。

Abstract:

Aiming at the problems that the closing time and asynchronization time are seriously exceeded the standard and the low closing speed of a 220 kV GIS circuit － breaker in a substation，through the analysis of the failure phenomenon and the field verification，the abnormal reasons of mechanical characteristics of GIS circuit － breaker are found out accurately． Meanwhile，based on the field experiences，the preventive measures for operation and maintenance are put forward，which provides a reference for the operation and maintenance of similar GIS circuit － breakers．