变电站电力设备外绝缘泄漏电流分析  

Analysis of Leakage Current along Insulating Surface of Electrical Apparatuses in Substation

作　　者：王黎明[1] 毛颖科[1] 关志成[1] 

机构地区：[1]清华大学深圳研究生院,广东深圳518055

出　　处：《陕西电力》2007年第7期1-4,共4页Shanxi Electric Power

基　　金：国家自然科学基金(50377020)

摘　　要：为了防止电力系统污闪事故的发生,必须对电力设备外绝缘状态进行监测。由于泄漏电流法具有便于实现在线监测的特点,已在电力设备的污秽度监测中得到了应用。利用自行研制的泄漏电流在线监测系统,对变电站的电力设备外绝缘泄漏电流进行了在线监测。根据现场采集到的泄漏电流数据,分析了泄漏电流发生的时段和月份,泄漏电流及其特征量和环境湿度之间的关系。Monitoring of the insulating statuses of electric apparatuses is required to prevent contamination flashover. Leakage current has been adopted as a mean to monitor the pollution level in power system for its characteristic of convenient online monitoring. Leakage current of two apparatuses in a substation is measured by an online monitoring system developed by ourselves. With the data acquired in this system, the variation of leakage current in different hours and months and the relationship between the leakage current and relative humidity are analyzed.

关 键 词：外绝缘 泄漏电流 相对湿度 

分 类 号：TM854[电气工程—高电压与绝缘技术]