Research on the Carrier Characteristics of Power Cables Considering the Aging Status of Insulation and Semiconducting Layers

Xiaohua Yang, Zixuan Wang, Jiahao Li, Ming Wu (), Guanpan Wang, Xueting Gao and Jinghui Gao ()
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Xiaohua Yang: Measurement Center of Yunnan Power Grid Co., Ltd., Kunming 650051, China
Zixuan Wang: National Key Laboratory of Electrical Materials and Insulation, Xi’an Jiaotong University, Xi’an 710049, China
Jiahao Li: Measurement Center of Yunnan Power Grid Co., Ltd., Kunming 650051, China
Ming Wu: National Key Laboratory of Electrical Materials and Insulation, Xi’an Jiaotong University, Xi’an 710049, China
Guanpan Wang: Measurement Center of Yunnan Power Grid Co., Ltd., Kunming 650051, China
Xueting Gao: National Key Laboratory of Electrical Materials and Insulation, Xi’an Jiaotong University, Xi’an 710049, China
Jinghui Gao: National Key Laboratory of Electrical Materials and Insulation, Xi’an Jiaotong University, Xi’an 710049, China

Energies, 2024, vol. 17, issue 22, 1-12

Abstract: The 10 kV XPLE cable is widely used in highly cabled transmission and distribution networks. It is necessary to closely monitor the transient current, harmonic content, and electric field distribution of each layer of the insulation and semiconductive layers of the cable when they age and deteriorate, so as to promptly carry out circuit breaking treatment and prevent safety accidents. Considering the frequency sensitivity and dielectric sensitivity of the distributed R unit , L unit , G unit , and C unit parameters of long cables, this paper quantitatively analyzes the frequency variation of 10 kV cable parameters under different aging states. Reconstructing the frequency variation process of typical electrical quantities through MATLAB PSCAD joint simulation, constructing fault circuits for cable insulation and semiconducting layers, obtaining transient currents in each layer of the cable under aging conditions, and conducting total harmonic distortion (THD) analysis to provide theoretical guidance for the subsequent monitoring and fault diagnosis of distribution cable status.

Keywords: aging; cable; distributed parameters; impedance spectrum; PSCAD/EMTDC (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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