室外绝缘子泄漏电流的仿真  

Simulation of Leakage Current of Outdoor Insulators

作　　者：李江鹏 周源根 肖国华 欧阳卫星 吴小芳 袁扬 刘阳波 陈利瑶 曾水连 LI Jiangpeng;ZHOU Yuangen;XIAO Guohua;OUYANG Weixing;WU Xiaofang;YUAN Yang;LIU Yangbo;CHEN Liyao;ZENG Shuilian(Xingan County Power Supply Branch,State Grid Jiangxi Electric Power Co.,Ltd.,Ji′an 331300,China)

机构地区：[1]国网江西省电力有限公司新干县供电分公司,江西吉安331300

出　　处：《电工技术》2022年第9期138-140,145,共4页Electric Engineering

基　　金：国家电网公司科技项目(编号SGTYHT/21-JS-226)。

摘　　要：针对长期挂网运行的绝缘子上产生泄漏电流的问题,提出一种绝缘子泄漏电流特征识别方法。首先利用一种等效电路模型模拟各种情况下的绝缘子泄漏电流;其次通过ATP/EMTP仿真软件模拟了四种不同环境下新绝缘子和老化绝缘子的泄漏电流波形;最后对仿真获取的泄漏电流波形、幅值、总谐波失真等特征作出了分析。结果表明,泄漏电流的大小和波形很大程度上取决于绝缘子表面电阻的非线性特性。Aiming at the problem of leakage current on insulators in long-term network operation,an insulator leakage current characteristic identification method is proposed.Firstly,an equivalent circuit model is used to simulate the insulator leakage current under various conditions.Secondly,the leakage current waveforms of new and aged insulators under four different environments are simulated by ATP/EMTP simulation software.Finally,the characteristics of leakage current waveform,amplitude and total harmonic distortion obtained by simulation are analyzed.The results show that the magnitude and waveform of leakage current largely depend on the nonlinear characteristics of insulator surface resistance.

关 键 词：绝缘子 泄漏电流 等效电路 仿真 

分 类 号：TM216[一般工业技术—材料科学与工程]