复合绝缘子污闪与冰闪特性及临界闪络电流研究

doi:10.11930/j.issn.1004-9649.201801061

中国电力 ›› 2019, Vol. 52 ›› Issue (4): 59-65.DOI: 10.11930/j.issn.1004-9649.201801061

复合绝缘子污闪与冰闪特性及临界闪络电流研究

吴高林¹, 周庆¹, 肖前波¹, 胡建林², 毕茂强^2,3

1. 国网重庆市电力公司电力科学研究院, 重庆 401121;
2. 重庆大学输配电装备及系统安全与新技术国家重点实验室, 重庆 400030;
3. 重庆理工大学电气与电子工程学院, 重庆 400054

收稿日期:2018-01-15 修回日期:2018-04-26 出版日期:2019-04-05 发布日期:2019-04-16
作者简介:吴高林(1976-),男,高级工程师(教授级),从事电力设备状态评价及检测研究,E-mail:8097026@qq.com;毕茂强(1984-),男,通信作者,博士,副教授,从事输电线路覆冰及防护,复杂环境中输电线路外绝缘和电工材料老化研究,E-mail:bimaoqiang@cqut.edu.cn
基金资助:
国家自然科学基金资助项目（51637002）。

Study on Icing and Contamination Flashover Characteristics and Critical Flashover Current of Composite Insulators

WU Gaolin¹, ZHOU Qing¹, XIAO Qianbo¹, HU Jianlin², BI Maoqiang^2,3

1. Electric Power Research Institute of Chongqing Power Electric Corporation of State Grid, Chongqing 401121, China;
2. State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400030, China;
3. School of Electrical and Electronic Engineering, Chongqing University of Technology, Chongqing 400054, China

Received:2018-01-15 Revised:2018-04-26 Online:2019-04-05 Published:2019-04-16
Supported by:
This work is supported by the National Natural Science Foundation of China(No.51637002).

摘要/Abstract

摘要： 绝缘子的电气特性是进行输电线路外绝缘设计的关键参数之一，其临界闪络电流对绝缘子的状态评估和闪络预警有着重要的作用。以FXBW-110/100型复合绝缘子为试品，在人工气候室对该绝缘子进行了人工污秽试验和人工覆冰试验。试验结果表明：复合绝缘子污闪和冰闪电压随着绝缘子表面盐密的增加而降低，冰闪和污闪电压与盐密均满足负幂指数关系，覆冰条件下的污秽特征指数与污秽无覆冰状态下的特征指数相差不大，可将覆冰视为一种特殊形式的污秽；在相同污秽条件下覆冰复合绝缘子的闪络电压比未覆冰的闪络电压低，随着覆冰厚度的增加，绝缘子闪络电压进一步降低；复合绝缘子污闪和冰闪的临界闪络电流与盐密满足幂指数关系，污闪和冰闪的临界闪络电流均随着绝缘子表面的盐密的增加而增加，在相同污秽条件下覆冰绝缘子的临界闪络电流比未覆冰的临界闪络电流更大。

关键词: 复合绝缘子, 污闪, 冰闪, 临界闪络电流, 绝缘配合

Abstract: The electrical characteristics of the insulators are one of the key parameters for the design of the external insulation of the transmission lines. Insulator critical flashover current plays an important role in condition assessment and flashover warning for insulators. In this paper, the artificial pollution test and artificial icing test of the FXBW-110/100 composite insulators are carried out in the artificial climate chamber. The test results show that the contamination flashover voltage and icing flashover voltage of composite insulator decrease with the increase of salt density on the surface of the insulator, which can be fitted as the exponential expression. The fitting parameters of the exponential expression under contamination condition with and without ice are almost same. Therefore, the icing condition can be considered as a special form of pollution condition. The flashover voltage of the insulators with icing is lower than that of the insulators without icing under the same pollution conditions. The flashover voltage decreases with the increasing of the thickness of icing layer on the insulator. The critical flashover current of icing and contamination composite insulators increases with the increase of SDD. The relationship can be fitted as exponential expression under the same pollution conditions, the critical flashover current(Ic) of ice covered insulators is larger than that without icing.

Key words: composite insulator, contamination flashover, icing flashover, critical flashover current, insulation coordination

中图分类号:

TM853

吴高林, 周庆, 肖前波, 胡建林, 毕茂强. 复合绝缘子污闪与冰闪特性及临界闪络电流研究[J]. 中国电力, 2019, 52(4): 59-65.

WU Gaolin, ZHOU Qing, XIAO Qianbo, HU Jianlin, BI Maoqiang. Study on Icing and Contamination Flashover Characteristics and Critical Flashover Current of Composite Insulators[J]. Electric Power, 2019, 52(4): 59-65.

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复合绝缘子污闪与冰闪特性及临界闪络电流研究

Study on Icing and Contamination Flashover Characteristics and Critical Flashover Current of Composite Insulators

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Study on Icing and Contamination Flashover Characteristics and Critical Flashover Current of Composite Insulators

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