自然积污绝缘子等值盐密的累积规律  

Accumulation Rule of ESDD of Insulators Covered with Natural Pollution

作　　者：王少华[1] 方玉群[2] 胡旭光[2] 刘黎[1] 叶自强[1] 

机构地区：[1]浙江省电力试验研究院,杭州310014 [2]金华电业局,浙江金华321017

出　　处：《绝缘材料》2011年第4期52-54,共3页Insulating Materials

基　　金：浙江省电力公司重点科技项目(ZDK069-2010)

摘　　要：通过实测分析挂网运行的输电线路绝缘子表面等值盐密（ESDD）,利用数据拟合分析其累积规律。结果表明：自然污染条件下,绝缘子表面ESDD随着积污时间的增加而增大;绝缘子经过长期的自然积污后,表面ESDD趋于稳定,积污量达到饱和;ESDD随积污时间的增加按负指数函数增加;绝缘子的积污时间常数τ为39.421~44.262,均值为41.842。The ESDD of line insulators covered with natural pollution was measured and analyzed,and the accumulation rule was analyzed through data fitting.The results show that under the natural pollution condition,ESDD increases with the increase of pollution accumulation period.After a long period of accumulation, the value of ESDD becomes stable and the amount of pollution attains saturated. The relationship between ESDD and pollution accumulation period can be described by a negative exponential function.The time constant indicating the pollution accumulation speed of the test insulators is between 39.421 and 44.262,and the average is 41.842

关 键 词：绝缘子 自然积污 等值盐密 累积规律 

分 类 号：TM85[电气工程—高电压与绝缘技术] TM216[一般工业技术—材料科学与工程]