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Effect of Thermal Aging on Threshold Field Strength and Relative Permittivity of Cross-Linked Polyethylene with Different Cross-Linking Agent Contents

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Abstract

This article presents the effect of thermal aging on threshold field strength and relative permittivity of cross-linked polyethylene (XLPE) with different cross-linking agent contents. Here, low-density polyethylene (LDPE) and dicumyl peroxide (DCP) are used as basic experimental material and cross-linking agent, respectively. Eventually, experimental results indicate that thermal aging can gradually make threshold field strength and relative permittivity of XLPE with different DCP contents increase and decrease, respectively. Besides, threshold field strength of XLPE with different DCP contents increases first and then decreases as the increase of DCP content, while relative permittivity of XLPE with different DCP contents decreases first and then increases as DCP content increases at different thermal aging time, etc. These studies in this article are the basis of the research on space charge accumulation and dissipation inside XLPE materials, which are of great significance to the normal operation of XLPE cables.

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Acknowledgements

This research is supported by the project of State Grid Hunan Electric Power Company Limited Research Institute of China (project name: Research on Cable Repair Mechanism of Distribution Network).

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Authors and Affiliations

  1. State Grid Hunan Electric Power Company Limited Research Institute, Changsha, 410007, China

    Dai Wan, Fei Qi, Hengyi Zhou, Miao Zhao & Xujin Duan

  2. State Grid Joint Laboratory for Intelligent Application and Key Equipment in Distribution Network, Changsha, 410007, China

    Dai Wan & Fei Qi

  3. State Key Laboratory of Power Transmission Equipment and System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing, 400044, China

    Quan Zhou

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  1. Dai Wan
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  4. Hengyi Zhou
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Correspondence to Dai Wan.

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Wan, D., Qi, F., Zhou, Q. et al. Effect of Thermal Aging on Threshold Field Strength and Relative Permittivity of Cross-Linked Polyethylene with Different Cross-Linking Agent Contents. J. Electr. Eng. Technol. 16, 2885–2892 (2021). https://doi.org/10.1007/s42835-021-00823-4

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  • DOI: https://doi.org/10.1007/s42835-021-00823-4

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