Breakdown Performance Evaluation and Lifetime Prediction of XLPE Insulation in HVAC Cables

Zhonglei Li, Yuming Dong, You Wu, Zhengzheng Meng, Pengxian Song, Mingzheng Zhu, Xu Li and Boxue Du ()
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Zhonglei Li: Key Laboratory of Smart Grid of Ministry of Education, School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China
Yuming Dong: Key Laboratory of Smart Grid of Ministry of Education, School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China
You Wu: Key Laboratory of Smart Grid of Ministry of Education, School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China
Zhengzheng Meng: Electric Power Research Institute, State Grid Tianjin Electric Power Company, Tianjin 300384, China
Pengxian Song: Electric Power Research Institute, State Grid Tianjin Electric Power Company, Tianjin 300384, China
Mingzheng Zhu: Electric Power Research Institute, State Grid Tianjin Electric Power Company, Tianjin 300384, China
Xu Li: Electric Power Research Institute, State Grid Tianjin Electric Power Company, Tianjin 300384, China
Boxue Du: Key Laboratory of Smart Grid of Ministry of Education, School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China

Energies, 2024, vol. 17, issue 6, 1-15

Abstract: This article presents the recent developments in the field of evaluation of the breakdown performance and remaining lifetime of XLPE insulation and analyzes the accuracy of existing lifetime prediction models through experiments. The effects of the crystalline morphology, cable thickness and sampling location of XLPE insulation on the evaluation of short-term breakdown performance are reviewed in the context of the experiments. The study reviews the application of the Ramu, Simoni, and Ramu multi-stress lifetime prediction models and explores the other remaining lifetime prediction models under the combined electrothermal stresses which are applicable to XLPE insulation. Finally, this paper recommends the most effective engineering evaluation methods and provides suggestions for improving the electrical performance of XLPE insulation for high-voltage cables.

Keywords: XLPE; power cable; breakdown strength; crystalline morphology; lifetime prediction model; combined electrothermal stress (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: 2024
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