The influence of pollution accumulation on coating aging of UHV line insulators with different suspension height in coal-ash polluted area

• Autorzy: Lan Lei , Mu Lin , Wang Yu , Yuan Xiaoqing , Wang Wei , Li Zhenghui

Identyfikatory

DOI

10.24425/aee.2020.131757

• Języki publikacji: EN

Abstrakty

EN

Room temperature vulcanized (RTV) silicone rubber is widely used to prevent pollution flashover with its excellent hydrophobicity and hydrophobicity transfer. However, RTV coatings are at the risk of deterioration and failure in heavily polluted operating environment. In this paper, RTV coated insulators with different suspension heights operating in coal ash polluted areas were sampled. Pollution degree, pollution composition and aging degree of coatings were tested. The result shows that the insoluble pollution contains Al(OH)3 filler precipitated from RTV coating, which indicates the aging of the RTV coating. The top surface coating is more affected by ultraviolet and rainwater than the bottom surface resulting in more serious degradation. As the pollution degree of the lower phase insulator is heavier than that of the upper phase insulator, the erosion effect of pollution on the RTV coating is more intense. The fillers and rubber molecules of RTV continuously precipitate into the pollution layer, leading to further aging. Therefore, the overall aging degree of the lower insulator coating is more serious than that of the upper insulator coating.

Słowa kluczowe

EN

aging; pollution component; pollution degree; RTV coating

• Wydawca: Polish Academy of Sciences, Committee on Electrical Engineering
• Czasopismo: Archives of Electrical Engineering
• Rocznik: 2020
• Tom: Vol. 69, nr 1
• Strony: 39--56
• Opis fizyczny: Bibliogr. 29 poz., rys., tab., wz.

Twórcy

autor

Lan Lei

• School of Electrical Engineering and automation, Wuhan University China

autor

Mu Lin

• School of Electrical Engineering and automation, Wuhan University China

autor

Wang Yu

• School of Electrical Engineering and automation, Wuhan University China

autor

Yuan Xiaoqing

• Power Dispatching and Control Center of Guizhou Power Grid Co., Ltd. China

autor

Wang Wei

• School of Electrical Engineering and automation, Wuhan University China

autor

Li Zhenghui

• School of Electrical Engineering and automation, Wuhan University China

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).