局域电场逆问题在劣质绝缘子诊断中的应用  

An application for detecting faulty insulators based on an inverse problem in local electrical fields

作　　者：张占龙[1] 黄丹梅[1] 张斌荣[1] 何为[1] 田琳[1] 汪泉弟[1] 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400030

出　　处：《重庆大学学报（自然科学版）》2009年第5期524-527,共4页Journal of Chongqing University

基　　金：国家自然科学基金资助项目(50877081);输配电装备及系统安全与新技术国家重点实验室自主研究课题(2007DA10512708304);电力设备电气绝缘国家重点实验室开放课题(200704);国家大学生创新性实验项目(081061102)

摘　　要：鉴于电场测量法检测绝缘子需要测量点较多,检测精度低的问题,采用基于局域电场逆问题的优化算法,建立求解绝缘子电场逆问题的计算模型;通过对局域电场逆问题的求解计算绝缘子串表面的电压分布,实现局域电场逆问题在劣质绝缘子诊断中的应用,并在此基础上分析测量点水平偏移和竖直偏移对检测造成的误差。仿真结果表明,将局域电场逆问题方法应用到劣质绝缘子检测中,可以实现离线检测,减低测量工作量,改善检测精度。An optimal computing model for detecting poor insulators has been developed based on an inverse problem in local electrical fields. The model takes into consideration the fact that electrical field measurement for insulators requires measuring many points with low precision. By calculating the actual voltage distribution along an insulator string, this method detects faulty insulators based on an inverse problem. We study the detection error caused by excursion of measure points. Simulation results show that the proposed model based on an inverse problem can be detect poor insulators, carry out non-contact measurement, reduce workload, and improve detection precision.

关 键 词：劣质绝缘子 电场 逆问题 测量点 

分 类 号：TM835[电气工程—高电压与绝缘技术]