高电压技术2008，Vol.34Issue(12)：2621-2625,5.
污秽绝缘子表面电场分布仿真及绝缘特性试验
Surface Electrical Field Distribution Simulation and Insulation Characteristics Test of Polluted Insulators
摘要
Abstract
In this paper, the electrical fields along the insulator surface under different scenarios, such as asymmetric pollution on top/bottom surface, and uneven circumferential distribution of surface pollution, have been calculated with finite element method for field simulation. Tests on artificial pollution insulators are conducted to study the 50% withstand voltage U50 of artificial pollution suspension insulators under different NSDD(non-soluble deposit density) and asymmetric pollution on the top/bottom surface , and study the change of leakage current with air humidity under different voltage and different ESDD(equivalent salt deposit density). The result shows that asymmetric top/bottom surface pollution has a greater impact on the insulator electrical field distribution, and the leakage current will jump under low air humidity, if had large ESDD, which has practical meanings to the anti-pollution design of the transmission line under different pollution levels across the country.关键词
creepage distance/dielectric constant/ESDD/electrical field/finite element method/humidity/leakage current/NSDD/suspension insulator/surface pollutionKey words
creepage distance/dielectric constant/ESDD/electrical field/finite element method/humidity/leakage current/NSDD/suspension insulator/surface pollution分类
信息技术与安全科学引用本文复制引用
霍锋,陈勇,蔡炜..污秽绝缘子表面电场分布仿真及绝缘特性试验[J].高电压技术,2008,34(12):2621-2625,5.基金项目
Key Technology Research Program of SGCC (SGSC[2005]115). （SGSC[2005]115）
