电压种类及极性对绝缘子积污的影响  

Influence of Voltage Types and Polarity on Contamination of Insulators

作　　者：孙保强[1] 王黎明[1] 关志成[1] 孟晓波[1] 赵宇明 张福增 

机构地区：[1]清华大学深圳研究生院,深圳518055 [2]南方电网科学研究院,广州510080

出　　处：《高电压技术》2013年第12期3101-3108,共8页High Voltage Engineering

基　　金：国家重点基础研究发展计划(973计划)(2009CB724503);南方电网重点科技项目~~

摘　　要：为了研究电场对绝缘子积污的影响，在自主研制的小型积污环境模拟室中对复合绝缘子在正负直流电压及交流电压下的积污特性进行了模拟试验研究。试验结果表明：电场力对绝缘子的积污有很大影响，在直流电压作用下绝缘子的积污要比交流电压作用下严重；在10kV和15kV电压时的直、交流绝缘子积污比分别为1．19和1.66；正直流电压对绝缘子积污的影响比负直流的稍强；在0～15kV的电压范围内正、负直流电压积污比的最大值为1．10；在交、直流电压作用下绝缘子各伞裙表面积污都符合U形分布，和沿绝缘子轴向电位分布规律相符。In order to study the effect of electric field on the contamination of insulators, a small dust chamber is developed for performing contamination tests of insulator under DC and AC voltages. Conclusions are drawn from the test results：the contamination of insulators is greatly influenced by electric field, and the insulator contamination is more serious under DC voltage than under AC voltage; the maximal ratio of contamination under DC to that under AC is respectively 1.19 and 1.66 under 10 kV and 15 kV voltages; compared with negative DC voltage, positive DC voltage induces more severely a contamination; within the voltage range of 0- 15 kV, the maximal contamination ratio （positive to negative DC） of insulator is 1.10; the distribution of the contamination on the insulator surface appears to be a ＂U-shape＂, which matches the potential distribution along insulator strings.

关 键 词：复合绝缘子 积污 交流电压影响 直流电压影响 正负极性 小型积污环境模拟室 

分 类 号：TM216[一般工业技术—材料科学与工程]