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A New Protection Scheme of Intersystem Fault for AC/DC Hybrid Overhead Lines

Author

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  • Yan Tao

    (Electric Power Research Institute of Jiangsu Electric Power Co., Ltd., Nanjing 211103, China)

  • Xiangping Kong

    (Electric Power Research Institute of Jiangsu Electric Power Co., Ltd., Nanjing 211103, China)

  • Chenqing Wang

    (Electric Power Research Institute of Jiangsu Electric Power Co., Ltd., Nanjing 211103, China)

  • Junchao Zheng

    (Electric Power Research Institute of Jiangsu Electric Power Co., Ltd., Nanjing 211103, China)

  • Zijun Bin

    (Electric Power Research Institute of Jiangsu Electric Power Co., Ltd., Nanjing 211103, China)

  • Jinjiao Lin

    (Electric Power Research Institute of Jiangsu Electric Power Co., Ltd., Nanjing 211103, China)

  • Sudi Xu

    (Electric Power Research Institute of Jiangsu Electric Power Co., Ltd., Nanjing 211103, China)

Abstract

Transforming the existing key HVAC transmission lines into High Voltage Direct Current (HVDC) transmission systems is a new type of transmission capacity expansion scheme that has been applied in power systems in Germany, the United Kingdom and other regions. After the occurrence of AC/DC intersystem faults, the fault characteristics are complex, and the protection adaptability will be affected. At present, there is no specific protection scheme for AC/DC intersystem faults. In this paper, a protection scheme based on the same side current similarity characteristics of AC and DC transmission lines is proposed, and the Hausdorff distance algorithm is introduced to measure two sets of current waveforms under different fault scenarios. The proposed protection scheme can complete the fault identification within a few milliseconds after the fault and has good rapidity and application prospects, and the effective value of the scheme is verified on the simulation platform.

Suggested Citation

  • Yan Tao & Xiangping Kong & Chenqing Wang & Junchao Zheng & Zijun Bin & Jinjiao Lin & Sudi Xu, 2025. "A New Protection Scheme of Intersystem Fault for AC/DC Hybrid Overhead Lines," Energies, MDPI, vol. 18(7), pages 1-15, March.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:7:p:1716-:d:1623647
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    References listed on IDEAS

    as
    1. Dargahi, Vahid & Sadigh, Arash Khoshkbar & Pahlavani, Mohammad Reza Alizadeh & Shoulaie, Abbas, 2012. "DC (direct current) voltage source reduction in stacked multicell converter based energy systems," Energy, Elsevier, vol. 46(1), pages 649-663.
    2. Yang, Yun & Zhang, Shijie & Xiao, Yunhan, 2015. "Optimal design of distributed energy resource systems coupled with energy distribution networks," Energy, Elsevier, vol. 85(C), pages 433-448.
    3. Humpert, Christof, 2012. "Long distance transmission systems for the future electricity supply – Analysis of possibilities and restrictions," Energy, Elsevier, vol. 48(1), pages 278-283.
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