摘要
金属氧化物避雷器(MOA)的小电流特性决定了它的工频稳定性,其阻性电流的变化能反映MOA老化或受潮的状态。介绍了MOA检测原理及常用检测方法,利用各次谐波法对ZnO阀片阻性电流进行了测试,取得了较好的效果。
The working stability of MOA depends on the electric characteristics in small current region.The variation of the resistive current reflects aging or internal moisture of MOA.In this paper,the common used detecting methods of MOA are first reviewed,a ZnO varistor is tested,and the resistive current is detected by harmonic analysis method.
出处
《华中电力》
2009年第6期60-63,共4页
Central China Electric Power
关键词
MOA
阻性电流
各次谐波法
MOA
resistive current
harmonic analysis method
