摘要
分析金属氧化物避雷器的性能、结构及劣化机理,认为受潮和电阻片老化是金属氧化物避雷器劣化的最主要原因,阐述目前用于监视、诊断和评估运行中的金属氧化物避雷器状态的主要方法,认为阻性电流带电检测和红外热像检测是评估避雷器运行状态的有效手段。
The feature, structure, and degradation mechanism of metal oxide surge arrester （MOA） are analyzed in this pa- per. It is found that the main reasons for MOA defects are valves being damped and aging. Ways can be used to moni- tor,diagnose and assess MOA in operation are summed up. The most effective methods for the condition assessment of MOA are resistance current on-line detection and infrared thermal imaging.
出处
《河北电力技术》
2012年第6期1-4,共4页
Hebei Electric Power
关键词
金属氧化物避雷器
带电检测
红外热成像
阻性电流
metal oxide arrester （MOA）
on-line detection
infrared thermal imaging
resistance current
