500kV交流岭深线路复合绝缘子的积污特性  

Contamination Characteristics of Composite Insulators on 500 kV Ling-Shen Transmission Line

作　　者：徐康泰[1] 屠幼萍[1] 李天福[1] 许卓[1] 张福增[2] 徐曙 李锐海[2] 

机构地区：[1]华北电力大学高电压与电磁兼容北京市重点实验室,北京102206 [2]中国南方电网有限责任公司,广州510623 [3]深圳供电局有限公司,广东深圳518000

出　　处：《高压电器》2014年第12期1-6,13,共7页High Voltage Apparatus

基　　金：国家自然科学基金(50877025)~~

摘　　要：绝缘子表面积污状况与污区划分及外绝缘的选择密切相关,是外绝缘的基础性工作之一。为此,文中选取10支深圳地区岭深线路交流500 k V复合绝缘子并对其积污特性展开研究。对测试结果进行方差分析发现,岭深线不同地形条件绝缘子整体积污状况接近,而同一支绝缘子不同部位表面积污状况存在差异,表现为:靠近绝缘子串两端的伞裙单元盐密值较大;绝缘子伞裙上表面积污重于下表面。上述测试结果表明复合绝缘子表面积污存在不均匀性,在进行复合绝缘子人工污秽试验时,应充分考虑复合绝缘子的积污特点。Pollution severity on insulator surface is related to the pollution areas classified and the determination of the insulation level,which is one of the basic problems for external insulation.This paper selects 10 composite insulators on 500 kV Ling-Shen AC transmission line in Shenzhen and investigates the natural contamination characteristics of insulators.The results of variance analysis show that the amount of pollution in different areas are close,however the pollution distribution along the string is uneven.The ESDD is higher at both the end of insulator and the pollution of the upper surface is more serious than lower surface on the insulator itself.This paper presents the non-uniform characteristics of contamination distribution,which should be taken into consideration in artificial pollution test.

关 键 词：复合绝缘子 积污特性 方差分析 非均匀性 等值盐密 等值灰密 

分 类 号：TM216[一般工业技术—材料科学与工程]