一起串补MOV的故障分析

马勇

马勇.一起串补MOV的故障分析[J].电测与仪表,2016,53(10):.
mayong.Fault Analysis of Metal Oxide Varistor (MOV) for Series Compensation Capacitor Banks[J].Electrical Measurement & Instrumentation,2016,53(10):.

一起串补MOV的故障分析

Fault Analysis of Metal Oxide Varistor (MOV) for Series Compensation Capacitor Banks

DOI：

中文关键词: 串联补偿装置金属氧化物非线性电阻器间隙故障分析

英文关键词:series compensation capacitor banks metal oxide varistor(MOV) gap fault analysis

基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目）

作者中文名	作者英文名	单位
马勇	mayong	江苏省电力公司电力科学研究院

摘要点击次数: 1720

中文摘要:

对一起串补MOV设备在运行过程中发生的故障进行了分析。对串补MOV进行外观检查、电气试验,分析了MOV的设计要求,分析了故障录波,开展了故障仿真分析,发现某支MOV在区外故障时发生故障,导致了电容器组对故障MOV放电,MOV过电流保护动作,而GAP拒触发保护动作。针对此次故障提出不可随意更换单支MOV,及早整组更换运行年限久、性能裂化的MOV设备,以提高设备的运行可靠性。

英文摘要:

A fault of metal oxide varistor(MOV) for series compensation capacitor banks is analyzed in this paper. The MOV is checked by visual inspection and electrical test, and the wave of fault recorder is analyzed incorporating the simulation. The fault is due to the discharge the capacitor, because the MOV is broke down while the phase - phase grounding fault appear. According to this fault, two improvement measure(change MOV not at will, replace MOV with a long history and performance degradation) are presented, so as to improve and enhance operation and maintenance situation of the MOV.

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