去粉化对硅橡胶复合绝缘子性能的影响

doi:10.19595/j.cnki.1000-6753.tces.200954

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Abstract 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.

Key words： Composite insulator de-powdering physical and chemical properties dielectric properties material analysis

Received: 01 August 2020

PACS:

TM216

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	Zhang Zhijin
	Liang Tian
	Xiang Yingzhu
	Jiang Xingliang

Cite this article:

Zhang Zhijin,Liang Tian,Xiang Yingzhu等. Effect of De-Powdering on the Performance of Silicone Rubber Composite Insulator[J]. Transactions of China Electrotechnical Society, 2022, 37(8): 2126-2136.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.200954 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I8/2126

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