电网技术Issue(10)：2855-2860,6.
自然积污绝缘子的污闪电压和泄漏电流特性试验研究
Experimental Research on Pollution Flashover Voltage and Leakage Current Characteristics of Naturally Polluted Insulators
王少华 1胡文堂 1何文林 1刘黎 1马杏可 2董建洋1
作者信息
- 1. 浙江省电力公司电力科学研究院，浙江省 杭州市 310014
- 2. 嘉兴电力局，浙江省 嘉兴市 314033
- 折叠
摘要
Abstract
Taking naturally polluted FC 70P/146 and XWP2-7 insulators for overhead transmission lines in Zhejiang power grid for research objects, experimental research on pollution flashover voltage and leakage current characteristics of naturally polluted insulators is performed. The method for experimental research on external insulation characteristics of naturally polluted insulators, in which the conversion coefficient of pollution is considered, is proposed, and the influencing regularities of equivalent salt deposit density (ESDD) and equivalent non-soluble material deposit density (NSDD) of naturally polluted insulators as well as the non-uniformity of dirt retention between upper and lower surfaces of polluted insulators on pollution flashover voltage and leakage current are obtained by data fitting. Research results show that as for naturally polluted FC 70P/146 and XWP2-7 insulators, the characteristic coefficients N characterizing the influence of pollution flashover voltage non-uniformity are 0.128 5 and 0.095 9 respectively, and they are less than the value of N characterizing the influence of artificial pollution flashover voltage. For FC 70P/146 insulator, the influencing characteristic index of average ESDD of leakage current a′ and the characteristic coefficient N′characterizing the influence of non-uniformity are 0.757 2 and 0.218 8 respectively;for XWP2-7 insulator the value of a′and N′ are 0.454 7 and 0.180 8 respectively. Relatively speaking, the values of a′and N′of FC 70P/146 insulator are higher than those of XWP2-7 insulator.关键词
绝缘子/自然污秽/输电线路/污闪电压/泄漏电流Key words
insulator/natural pollution/transmission line/pollution flashover voltage/leakage current分类
信息技术与安全科学引用本文复制引用
王少华,胡文堂,何文林,刘黎,马杏可,董建洋..自然积污绝缘子的污闪电压和泄漏电流特性试验研究[J].电网技术,2013,(10):2855-2860,6.
