运行复合绝缘子界面问题分析

doi:10.11930/j.issn.1004-9649.201702040

中国电力 ›› 2018, Vol. 51 ›› Issue (4): 45-52.DOI: 10.11930/j.issn.1004-9649.201702040

运行复合绝缘子界面问题分析

王康¹, 朱亚洲², 周辛南¹, 吴照国³, 胡远翔¹

1. 国网冀北电力有限公司电力科学研究院, 北京 100045;
2. 国网冀北电力有限公司张家口供电公司, 河北张家口 075000;
3. 国网重庆市电力公司电力科学研究院, 重庆 401123

收稿日期:2017-02-05 修回日期:2017-09-12 出版日期:2018-04-05 发布日期:2018-04-12
作者简介:王康(1988-),男,湖北荆门人,博士,工程师,从事高电压外绝缘及带电作业研究工作,E-mail:283281967@qq.com。

Analysis on the Interfacial Issues of Running Composite Insulators

WANG Kang¹, ZHU Yazhou², ZHOU Xinnan¹, WU Zhaoguo³, HU Yuanxiang¹

1. Jibei Electric Power Research Institute, State Grid Jibei Electric Power Company Limited, Beijing 100045, China;
2. Zhangjiakou Power Supply Company, State Grid Jibei Electric Power Company Limited, Zhangjiakou 075000, China;
3. Chongqing Electric Power Research Institute, State Grid Chongqing Electric Power Company Limited, Chongqing 401123, China

Received:2017-02-05 Revised:2017-09-12 Online:2018-04-05 Published:2018-04-12

摘要/Abstract

摘要： 为研究运行复合绝缘子界面问题，抽检了广东、广西和河北地区37、68和48支不同运行年限的复合绝缘子，检测其芯棒与护套界面、金具与芯棒及护套材料结合处界面及伞裙与护套界面的性能。采用统计分析法，发现大约有50%早期运行的复合绝缘子存在护套与芯棒间粘接不良；端部金具及密封胶出现不同形式的失效；广东地区83.8%的样品金具内腔和芯棒端头密封失效，河北及广西地区78%的样品劣化。采用挤包穿伞工艺的复合绝缘子伞裙与护套之间粘接均不牢靠，用手可轻易剥离，粘合胶没有弹性、较脆。针对目前标准中检测复合绝缘子界面性能方法不够灵敏的缺陷，根据实际检测需要，提出了测量水煮前后试品泄漏电流，通过泄漏电流变化来判断界面性能的方法。

关键词: 复合绝缘子, 界面性能, 水煮试验, 泄漏电流, 检测方法

Abstract: In order to study the interface problems of running composite insulator, 37, 68 and 38 composite insulators with different operating years are selected respectively from Guangdong, Guangxi and Hebei areas to test the performance of the interfaces between the core and sheds, between fittings, cores and sheds material, and between the housing and sheds. It is discovered by using the statistical analysis method that 50% of the early composite insulators have poor bondings between the housing and the core; the end fittings and sealants become invalid in various extents; 83.8% of samples from Guangdong area become invalid in the seal between the inside of fittings and tope of the core; 78% of the samples from Hebei and Guangxi areas are degraded. The composite insulators made by compression technology is poor in bonding between the housings and sheds and can be stripped easily by hand. Aimed at the poor sensitivity of the method defined in the standard to detect the interface performance, a new method is proposed to test the interface performance through detecting the variation of DC leakage current of samples before and after boiling.

Key words: composite insulator, interface performance, boiling test, DC leakage current, testing method

中图分类号:

TM853

王康, 朱亚洲, 周辛南, 吴照国, 胡远翔. 运行复合绝缘子界面问题分析[J]. 中国电力, 2018, 51(4): 45-52.

WANG Kang, ZHU Yazhou, ZHOU Xinnan, WU Zhaoguo, HU Yuanxiang. Analysis on the Interfacial Issues of Running Composite Insulators[J]. Electric Power, 2018, 51(4): 45-52.

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https://www.electricpower.com.cn/CN/Y2018/V51/I4/45

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运行复合绝缘子界面问题分析

Analysis on the Interfacial Issues of Running Composite Insulators

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Analysis on the Interfacial Issues of Running Composite Insulators

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