Analysis of the Influence of Silicone Rubber Aging on the Transmission Parameters of Terahertz Waves

Haitao Yang, Zhensheng Wu, Weinan Dong, Junpeng Dang and Hao Ren
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Haitao Yang: School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
Zhensheng Wu: School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
Weinan Dong: School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
Junpeng Dang: Yuxi Power Supply Bureau, China Southern Power Grid Yunnan Power Grid Co., Ltd., Yuxi 653100, China
Hao Ren: School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, China

Energies, 2021, vol. 14, issue 14, 1-17

Abstract: In this study, a method for testing the aging of silicone rubber insulators using terahertz waves in the 0.17–0.22 THz frequency band is proposed, aiming at the problem of online non-destructive testing of the aging degree of composite insulators. The relationship between the aging degree of silicone rubber composite insulators and the relative dielectric constant was studied through first-principles calculations and molecular chain scission models. In addition, the electromagnetic model of the terahertz signal incident on the silicon rubber sheet was simulated and the relationship between the aging degree of the silicon rubber and the terahertz input return loss was obtained. Eleven insulator samples with different degrees of aging were selected. In these samples, the degree of aging was calibrated according to the degree of surface deterioration and the average partial discharge voltage. The terahertz return loss measurement experiment was performed after that. Finally, the results of experiment and calculation simulation were compared and the reliability of the relationship between the aging degree of the silicone rubber insulator and the terahertz input return loss was verified.

Keywords: silicone rubber insulator; terahertz; aging detection; first-principles calculation (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: 2021
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