简析氧化锌避雷器带电测试技术及应用

Analysis and Application of Zinc Oxide Lightning Arrester Live Test Technology

氧化锌避雷器是一种保护性能优越、耐污秽、质量轻、阀片性能稳定的避雷设备。利用氧化锌良好的非线性伏安特性,使在正常工作电压时流过避雷器的电流极小;当过电压作用时,电阻急剧下降,泄放过电压的能量,达到保护的效果。这种避雷器和传统避雷器的差异是它没有放电间隙,利用氧化锌的非线性特性起到泄流和开断的作用。文章从氧化锌避雷器的带电测试技术方面对其现场测试应用进行了简要说明分析。

Zinc oxide lightning arrester is one kind of lightning protection that is superior performance,resistant to uncleanness,light,and valve slice stable performance.With the good nonlinear volt-ampere characteristics of ZnO,the current flowing through arrester is dinky under the normal working voltage.If voltage is higher than normal level,resistance will decline sharply and discharge the energy of overvoltage to play the role of voltage protection.The difference between this lightning arrester and traditional lightning arrester is that it do not exist discharge gap,and uses zinc oxide nonlinear characteristics to discharge and breaking circuit.In this article,its site test application were explaind and analyzed by using zinc oxide lightning arrester live testing technology.