摘要
在运行电压下测量金属氧化物避雷器的阻性电流,对于反映MOA是否受潮以及其运行的状态具有重要意义。介绍了用电压互感器法(PT电压法)测量MOA阻性电流的基本原理,并得出了几种试验结果,以及MOA劣化的判断标准。最后指出阻性电流的测量对于提高绝缘试验水平,加强绝缘监督将起到较大的作用。
Measuring resistive current of metal oxide arrester according to the service voltage is important to check whether MOA is damped and to indicate service status of MOA.Author introduces basic principle of measuring resistive current of MOA by method of potential voltage transformer(PT),and provides results of some kinds of tests and evaluation criterion of MOA degradation.Finally,the author points out that measuring resistive current play an important role in improving insulation test and intensifying insulation supervision.
出处
《电瓷避雷器》
CAS
北大核心
2004年第5期30-31,35,共3页
Insulators and Surge Arresters
关键词
MOA
PT电压法
测量
劣化的判断标准
MOA
measuring method of PT voltage
evaluation criterion of degradation
