Review of Explosion Mechanism and Explosion-Proof Measures for High-Voltage Cable Intermediate Joints

Wei Qiu, Chen Li, Nianqiao Chen (), Yuhua Huang, Zhibin Jiang, Jiangjing Cui, Peifeng Wang () and Gang Liu
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Wei Qiu: Zhuhai Power Supply Bureau of Guangdong Power Grid Limited Liability Company, Zhuhai 519000, China
Chen Li: Zhuhai Power Supply Bureau of Guangdong Power Grid Limited Liability Company, Zhuhai 519000, China
Nianqiao Chen: School of Electric Power Engineering, South China University of Technology, Guangzhou 510640, China
Yuhua Huang: Zhuhai Power Supply Bureau of Guangdong Power Grid Limited Liability Company, Zhuhai 519000, China
Zhibin Jiang: Zhuhai Power Supply Bureau of Guangdong Power Grid Limited Liability Company, Zhuhai 519000, China
Jiangjing Cui: Zhuhai Power Supply Bureau of Guangdong Power Grid Limited Liability Company, Zhuhai 519000, China
Peifeng Wang: School of Electric Power Engineering, South China University of Technology, Guangzhou 510640, China
Gang Liu: School of Electric Power Engineering, South China University of Technology, Guangzhou 510640, China

Energies, 2025, vol. 18, issue 6, 1-23

Abstract: The intermediate joint of high-voltage cables, as a critical component in the power transmission system, plays a direct role in the stable operation of the entire electrical system. In recent years, frequent explosions of intermediate joints in high-voltage cables have led to significant economic losses and safety risks. Therefore, studying the explosion mechanisms and explosion prevention measures of high-voltage cable intermediate joints is particularly important. This article provides a systematic review of the explosion mechanisms and explosion prevention measures for high-voltage cable intermediate joints. It begins by introducing the composition of cable systems and the structural features of the 220 kV prefabricated cable joint. Next, the article elaborates on the spatiotemporal evolution process of cable joint explosions. Typically, a cable joint explosion undergoes several stages: partial discharge, arc breakdown, and insulation material decomposition, which ultimately leads to explosion and ignition. Subsequently, the article reviews each of these dynamic stages in detail. Finally, the article discusses the existing explosion prevention measures and their shortcomings, and proposes future directions for the development of explosion prevention measures. This article can provide a theoretical foundation and technical reference for the research on the explosion mechanisms of high-voltage cable joints, as well as for the development of explosion prevention measures.

Keywords: cable intermediate joint; partial discharge; arc breakdown; cable joint explosion (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: 2025
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