一起500k V液压弹簧机构断路器油压低分合闸闭锁故障原因分析  

Fault analysis on low oil pressure opening and closing locking of 500kV hydraulic spring mechanism circuit breaker

作　　者：梁旭日 麻震烁 李冰玉 李弘文 安立明 LIANG Xuri;MA Zhenshuo;LI Bingyu;LI Hongwen;AN Liming(Ultra High Voltage Branch of State Grid Jibei Electric Power Co.,Ltd,Beijing 102488;Beijing Power Equipment General Factory Co.,Ltd,Beijing 102488)

机构地区：[1]国网冀北电力有限公司超高压分公司,北京102488 [2]北京电力设备总厂有限公司,北京102488

出　　处：《电气技术》2022年第9期93-96,共4页Electrical Engineering

摘　　要：针对一起某特高压变电站500kV液压弹簧机构断路器油压低分合闸闭锁故障,对该异常情况进行详细分析,判定为机构内部故障导致油压降低。通过解体找到渗漏点并最终查明是由于金属异物导致的渗漏;对金属异物进行化学成分分析,通过对比机构内零部件金属材料得出金属异物的来源;最后总结液压弹簧机构常见故障及处理方法,为现场故障处理提供参考。In view of a fault of low oil pressure opening and closing locking of 500kV hydraulic spring mechanism circuit breaker in an extra-high voltage(UHV)substation,by analyzing this abnormal condition in detail,it is determined that the internal fault of the mechanism leads to the decrease of oil pressure.By analyzing chemical composition of metal foreign body and comparing the metal materials of parts and components in the mechanism,the source of metal foreign body is found.The common faults of hydraulic spring mechanism and their treatment methods are put forward to provide preference for on-site fault treatment.

关 键 词：高压断路器 液压弹簧机构 油压低闭锁 金属异物 

分 类 号：TM561[电气工程—电器]