DC Electric Field Simulation and Electric Characteristics Test of Composite Insulator Coated with Electrothermal Paint

被引：0

作者：

Hu Q. ^{[1
]}

Xia H. ^{[2
]}

Jiang X. ^{[1
]}

Liu M. ^{[3
]}

Li Y. ^{[3
]}

Zhu M. ^{[1
]}

机构：

[1] State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Shapingba District, Chongqing

[2] State Grid Chongqing Electric Power Research Institute, Yubei District, Chongqing

[3] State Grid Jiangxi Electric Power Research Institute, Nanchang

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2020年 / 40卷 / 18期

关键词：

Composite insulator; DC electric characteristics; Electrothermal coating; Surface electric field;

D O I：

10.13334/j.0258-8013.pcsee.200091

中图分类号：

学科分类号：

摘要：

Icing on composite insulators threatens the safe operation of the power grid. Applying electrothermal paint to the surface of the composite insulator can effectively prevent icing, but it will affect the safety performance. In order to study the effect of electrothermal coating on the electric field of composite insulators, the DC electric field simulation of the composite insulators coated with electrothermal coating based on the finite element method was carried out in this paper. The results show that the greater the number of "switches", the weaker the change in the potential distribution of the composite insulator, and the more the distortion points of the creeping electric field. Besides, taking the surface electric field below the corona inception field strength as the criterion, the best coating layout was selected. Through the DC electrical characteristics test of the electrothermal composite insulator, it is found that the coating resistance will reduce the pollution flashover voltage, and the influence of the salt density of the pollution layer on the pollution flashover voltage and ice flashover voltage depends on the coating resistance. With the maximum withstand voltage higher than the power system target withstand voltage as the standard, the composite insulators coated with electrothermal coating meeting the safety performance were screened out. © 2020 Chin. Soc. for Elec. Eng.

引用

页码：6027 / 6034

页数：7

共 22 条

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