不带电条件下复合绝缘子与XP-70绝缘子自然积污特性对比分析  

Comparison and Analysis on Natural Contamination Characteristics of Uncharged Composite Insulator and XP-70 Insulator

作　　者：王建国[1] 王康[1] 姚森敬 赵灵 方春华[1] 

机构地区：[1]武汉大学电气工程学院,武汉430072 [2]深圳供电局有限公司,深圳518020

出　　处：《高电压技术》2013年第4期957-963,共7页High Voltage Engineering

基　　金：广东电网公司重点科技项目([2009]科技-06)~~

摘　　要：为研究复合绝缘子积污特性及与XP-70绝缘子积污特性的区别,选择深圳31处典型地区的输电杆塔对2种绝缘子不带电挂样进行了观测对比,分别测量了积污期为2a的绝缘子的等值附盐密度(ESDD)、等值附灰密度(NSDD)和2者之比(简称灰盐比,记为rE/N),并对比了复合绝缘子和XP-70绝缘子上表面、下表面与单片均值积污特性的区别。结果表明:1)观测期内,复合绝缘子上表面附盐密度约为XP-70绝缘子的2.2倍,下表面约为0.3倍,彼均值约为0.5倍;2)复合绝缘子上表面等值附灰密度约为XP-70绝缘子的3.6倍,下表面约为0.9倍,片均值约为1.4倍;3)复合绝缘子灰盐比大致分布在10～30范围内,XP-70绝缘子上表面灰盐比主要在5～25范围内,下表面灰盐比和均值灰盐比主要分布在5～10范围内。In order to study the difference between contaminations on composite insulators and XP-70 insulators, we comparatively observed two kinds of insulators, and selected insulators of uncharged hang on 31 transmission towers which were located in different typical areas in Shenzhen, China. Moreover, we measured the equivalent salt deposit density（ESDD）, non-soluble deposit density（NSDD）, and the ratio of NSDD to ESDD （rN/E） of insulators contaminated for 2 years, and figured out the difference in characteristics of the upper surface contamination and the lower surface contamination, and the average deposit density between the 2 types of insulators. The results are as follows： 1 ）For composite insulators, their ESDD on upper surface, ESDD on lower surface, and the average deposit density are about 2.2, 0.3 and 0.5 times of those of XP-70 insulators. 2）For composite insulators, their NSDD on upper surface, NSDD on lower surface, and the average deposit density are about 3.9, 0.9 and 1.4 times of those of XP-70 insulators. 3）The rN/E of composite insulator ranges in 10-30; for XP-70 insulators,the rN/E of the upper surface ranges in 5-25, and the rN/E of the lower surface and the average deposit density ranges in 5-10.

关 键 词：复合绝缘子 XP-70绝缘子 ESDD NSDD 灰盐比 外绝缘配置 

分 类 号：TM216[一般工业技术—材料科学与工程]