旋转法带电检测直流合成绝缘子技术的研究  

Rotating Method to Online Detecting DC Composite Insulator

作　　者：程养春[1] 李成榕[1] 丘东峰 张云 王伟[1] 马晓华 

机构地区：[1]华北电力大学电气学院,北京102206 [2]广西梧州超高压局,梧州543002 [3]<电网技术>杂志社,北京100085

出　　处：《高电压技术》2004年第9期33-34,61,共3页High Voltage Engineering

摘　　要：直流合成绝缘子的电场法带电检测研究表明 ,合成绝缘子具有导通性内绝缘缺陷时 ,该处轴向电场分布曲线存在畸变 ,据此设计了基于旋转法的直流电场检测仪 ,并用它在实验室中研究了电场法带电检测的可行性。现场试验表明绝缘子良好时直流电场分布曲线呈“U”型 ,有导通性缺陷时曲线在缺陷部位下陷 。The research of online detecting high voltage DC insulator based on electric field mapping is introduced. According to theoretic analysis, the electric field distribution curve of composite insulator has changed when conductive defect exist. In this paper, rotating method that is used to measure DC electric field is discussed and device is designed. The feasibility of rotating method and electric field method is studied in laboratory and real transmission line. The results show that the curve of good insulator has a waveform of 'U', but the curve of faulty insulator has aberrance. So, electric field distribution can be used to find defect of composite insulator. Rotating method can be used to measure DC electric field of insulator, and the device based on it is effective and portable.

关 键 词：电场法 直流合成绝缘子 带电检测 旋转法 

分 类 号：TM855[电气工程—高电压与绝缘技术]