中国电机工程学报Issue(31)：220-226,7.
污秽绝缘子闪络特性与泄漏电流特性研究
Research on Flashover Performance and Leakage Current Performance of Polluted Insulators
摘要
Abstract
The pollution flashover accidents of insulators on transmission lines do serious harm to the safe operation of power grid. In order to improve the understanding of flashover performance, mechanism and flashover process of polluted insulators, and provide a reference basis for the selection and design of the external insulation of transmission line. This paper deals with the flashover performance and leakage current performance of polluted insulators by analyzing the results of laboratory experiments. The results show that the flashover voltage decreases with the increasing of salt deposit density (SDD), non-soluble deposit density(NSDD) and fog conductivity; the flashover voltage of porcelain and glass insulators isn’t related to transition time, and the flashover voltage of composite insulators increased with the increasing of transition time. In the process of flashover, the leakage current and the pulse number of composite insulator are far less than that of porcelain and glass insulators. Under the same test conditions, the surface resistance of composite insulator is far greater than that of porcelain and glass insulators.关键词
污秽/绝缘子/闪络特性/泄漏电流/输电线路Key words
contamination/insulator/flashover performance/leakage current/transmission line分类
信息技术与安全科学引用本文复制引用
蒋兴良,赵世华,毕茂强,黎振宇,向泽..污秽绝缘子闪络特性与泄漏电流特性研究[J].中国电机工程学报,2013,(31):220-226,7.基金项目
国家重点基础研究发展计划项目(973项目)(2009CB724501/502/503)。The National Basic Research Program of China(973 Program)(2009CB724501/502/503) （973项目）
