Aging of Polymeric Insulators under Various Conditions and Environments: Another Look

Xinhan Qiao, Yue Ming, Ke Xu, Ning Yi and Raji Sundararajan ()
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Xinhan Qiao: School of Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, China
Yue Ming: School of Mechanical & Electrical Engineering, Xuzhou University of Technology, Xuzhou 221018, China
Ke Xu: State Key Laboratory of Environmental Adaptability for Industrial Products, China National Electric Apparatus Research Institute Co., Ltd., Guangzhou 510663, China
Ning Yi: State Grid Zhenjiang Power Supply Company, Zhenjiang 212000, China
Raji Sundararajan: School of Engineering Technology, Purdue University, West Lafayette, IN 47907, USA

Energies, 2022, vol. 15, issue 23, 1-16

Abstract: Polymeric insulators have lightweight, excellent hydrophobicity and convenient transportation and installation. They are widely used in the external insulation for distribution and transmission lines. However, due to the long-term effects of pollution, ultraviolet radiation, discharge, temperature, humidity, altitude and other natural and complex environmental and service factors, the silicone rubber and other materials of polymeric insulators gradually age and lose their hydrophobicity and electrical insulation characteristics. The operability is significantly reduced, which seriously affects the safety and reliability of the power system. Hence, there is a need for assessing and evaluating the long-term aging and degradation of polymeric insulators under various operating conditions and environments. In this review, the various aging and characterization techniques of the polymeric insulators and their aging performance under the action of multiple factors are discussed. To enhance the performance of polymeric insulators, nano-coating, surface treatment and other techniques are also indicated. In addition, future potential fields that should be explored from a high-voltage electrical insulation perspective are also presented.

Keywords: polymeric insulators; silicone rubber; EPDM; aging; nano-coating (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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