Effect of De-Powdering on the Performance of Silicone Rubber Composite Insulator

被引：0
|
作者：
Zhang Z. [1 ]
Liang T. [1 ]
Xiang Y. [1 ]
Jiang X. [1 ]
机构：
[1] State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2022年 / 37卷 / 08期
关键词：
Composite insulator; De-powdering; Dielectric properties; Material analysis; Physical and chemical properties;
D O I：
10.19595/j.cnki.1000-6753.tces.200954
中图分类号：
学科分类号：
摘要：
Different degrees of pulverization will occur on the surface of silicone rubber composite insulators operating in harsh environments such as high altitude, strong ultraviolet, salt fog and high humidity, thereby affecting the insulator's performance. In this paper, the powdering phenomenon of the composite insulator umbrella skirt aged for more than 10 years under three different environmental conditions was studied, and the hydrophobicity, roughness, dielectric properties, micromorphology and surface chemistry of the powdered layer before and after removal were tested. The results show that the hydrophobicity, roughness and dielectric properties of the composite insulator shed sample become worse after removing the powdered layer, a large number of micro holes are exposed on the surface of the composite insulator, and the chemical composition of the surface can be restored to the state close to that of the silicone rubber. The improvement of the composite insulator performance by de-powdering treatment is inconsistent. Therefore, whether the powdered composite insulators need to be de-powdered immediately in the actual operation remains to be further studied. © 2022, Electrical Technology Press Co. Ltd. All right reserved.
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页码：2126 / 2135
页数：9
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