浙西地区输电线路绝缘子串自然积污特性  

Natural Pollution Deposition Characteristic of Insulator String on Transmission Lines of Western Zhejiang

作　　者：胡锡栋 董皆 

机构地区：[1]浙江省城乡规划设计研究院,浙江杭州310007 [2]杭州市电力局,浙江杭州310004

出　　处：《电工电气》2012年第9期25-28,共4页Electrotechnics Electric

基　　金：浙江省电力公司重点科技项目(ZDK069-2010)

摘　　要：选取浙西地区输电线路挂网运行的自然积污悬式绝缘子串,对自然条件下带电运行绝缘子的积污特点进行了试验研究,采用数量统计方法分析了等值盐密(ESDD)、灰密(NSDD)以及灰密与等值盐密比值的分布规律。结果表明:浙西地区线路绝缘子ESDD大部分在0.05mg/cm2以下;NSDD大部分在0.10mg/cm2以下;自然积污绝缘子灰密与等值盐密比值近似服从正态分布,期望值为2.812,其95%置信区间为[2.5806,3.0435]。研究结果可为污区图修订和外绝缘选择提供参考。Taking the suspension porcelain insulator strings on transmission lines of western Zhejiang as research objects, this paper investigated the natural pollution deposition characteristic of operational insulators. This paper analyzed equivalent salt deposit density （ESDD）, non-soluble salt deposit density （NSDD） and the distribution rule of the ratio of NSDD to ESDD with methods of quantity statistics. The results show that in western Zhejiang regions, most ESDD of insulators are less than 0.05 mg/cm2 and most NSDD of insulators are less than 0.10 mg/cm2. The ratio of NSDD to ESDD has an approximate normal distribution rule, the mathematical expectation is 2.812 and the confidence interval is from 2.580 6 to 3.043 5, which provide references for the amendment of pollution distribution map and the external insulation selection.

关 键 词：绝缘子 自然污秽 输电线路 等值盐密 灰密 

分 类 号：TM852[电气工程—高电压与绝缘技术]