氧化锌避雷器在线检测数据分析

Analysis on On-line Monitoring Data of Zinc Oxide Arrester

介绍氧化锌避雷器(下称MOA)老化的原理,提出监测运行中MOA的工作情况,判断其质量状况的方法。

The zinc oxide arrester （MOA） without the discharge gap, zinc oxide varistor long withstand voltage, continuous resistive component in leakage current will continue to accelerate aging resistance sheet. The more serious aging, resistive component in leakage current increases more quickly, and form a vicious spiral. If the MOA deterioration in action under load, will make the normal to the insulation level reduced, leakage current increases, until become MOA breakdown and explosion. So monitoring in the operation of the MOA work, judge its quality is very necessary.