Suzhou Electric Appliance Research Institute
期刊号: CN32-1800/TM| ISSN1007-3175

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自然积污绝缘子串等值盐密简化测量方法的有效性

来源:电工电气发布时间:2016-03-25 08:25 浏览次数:694

自然积污绝缘子串等值盐密简化测量方法的有效性 

马杏可1,王少华2,朱亦振3 
1 嘉兴电力局,浙江 嘉兴 314033;2 浙江省电力公司电力科学研究院,浙江 杭州 310014;
3 金华电业局,浙江 金华 321017
 
 

摘 要: 以输电线路挂网运行的110 kV 及220 kV 自然积污悬式绝缘子串为研究对象,基于每片绝缘子的等值附盐密度(ESDD) 测试结果,对自然积污绝缘子串污秽度的简化测量方法进行了研究,分析了不同测量方法的污秽度测试结果差异。结果表明:对于110 kV 绝缘子串,取上、下各1 片,上、中、下各1 片,上、下各2 片绝缘子ESDD 均值作为整串绝缘子ESDD 均值,其差异不大,偏差约为5%。对于220 kV 绝缘子串,取上、中、下各1 片绝缘子ESDD 均值作为整串绝缘子ESDD 均值,偏差较大;为准确表征220 kV 绝缘子串的污秽度,建议取上、中、下各3 片或每隔1 片取1 片绝缘子ESDD 的均值。
关键词: 自然积污;绝缘子串;污秽度;等值附盐密度
中图分类号:TM216 文献标识码:B 文章编号:1007-3175(2013)09-0052-03


Effectiveness of Simplified Measuring Method of Equivalent Salt Deposit Density of Naturally Polluted Insulator String 

MA Xing-ke1, WANG Shao-hua2, ZHU Yi-zhen3 
1 Jiaxing Electric Power Bureau, Jiaxing 314033, China; 2 Zhejiang Electric Power Company Electric Power Research Institute, Hangzhou 310014, China; 3 Jinhua Electric Power Bureau, Jinhua 321017, China 
 

Abstract: Taking 11 0 kV and 220 kV naturally polluted suspension insulator strings on transmission lines as study objects and based on measured results of each piece of naturally polluted insulator for the equivalent salt deposit density (ESDD), this paper studied the simplified measuring method of pollution level of naturally polluted insulator strings. Analysis was made on differences of tested result of pollution level between different measuring methods. The results show that as for 11 0 kV insulator strings, there is nearly no obvious difference among the average ESDD value of the upper one and below one piece of insulator, the average ESDD value of the upper one, middle one and below one piece of insulator, and the average ESDD value of the upper two and below two pieces of insulators. The error between the real value and the simplified measuring value is less than 5%; as for 220 kV insulator strings, the error between the average ESDD value of the upper one, middle one and below one piece of insulator is obvious. In order to accurately evaluate the pollution level of 220 kV insulator strings, it is recommended that the upper three, middle three and below three pieces of insulators or one in every two pieces of insulators should be sampled.
             Key words: natural pollution; insulator string;pollution level; equivalent salt deposit density


参考文献
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