Effect of Plasma Fluorinated Nano-SiC/Epoxy Composite Coating on the Flashover Characteristics of Epoxy Resin

被引：0
|
作者：
Lü F. [1 ,2 ]
Liu C. [1 ]
Zhan Z. [1 ]
Hao L. [3 ]
Ruan H. [1 ]
Zhu Q. [4 ]
机构：
[1] State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing
[2] Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense, North China Electric Power University, Baoding
[3] Pinggao Group Co., Ltd., Pingdingshan
[4] Electric Power Research Institute of State Grid Henan Electric Power Company, Zhengzhou
来源：
Gaodianya Jishu/High Voltage Engineering | 2020年 / 46卷 / 07期
关键词：
DC flashover voltage; Epoxy composite coating; Nano-SiC; Plasma fluorination; Surface charge;
D O I：
10.13336/j.1003-6520.hve.20190940
中图分类号：
学科分类号：
摘要：
Surface charges will accumulate on the surface of epoxy resin insulators under electric field effect, which cause the surface flashover in serious cases and threaten the safe operation of power system and electrical equipment. Therefore, in this paper, the nano-SiC was fluorinated by CF4/Ar plasma in order to change the interfacial characteristics of nanocomposites. The epoxy composite coating materials doped with different mass fractions fluorinated nano-SiC were coated on epoxy substrates with three different thicknesses, and the surface potential and DC flashover were tested. The experimental results show that, with the increase of the content of filler in the epoxy coating, the flashover voltage and the surface charge dissipation rate increases, and the trap energy level and density decrease. Increasing the coating thickness can also increase the flashover voltage of samples. The flashover voltage of sample coated by 600 μm composite coating doped with 5% fluorinated nano-SiC is 18.7% higher than that of uncoated sample. As a convenient and effective method, plasma fluorinated nano-SiC/epoxy composite coating has bright application prospects in reducing the operational faults of electrical equipment. © 2020, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
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页码：2444 / 2452
页数：8
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