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A Two-Terminal Directional Protection Method for HVDC Transmission Lines of Current Fault Component Based on Improved VMD-Hilbert Transform

Author

Listed:
  • Shuhao Liu

    (Guangxi Key Laboratory of Power System Optimization and Energy Technology, Guangxi University, Nanning 530000, China)

  • Kunlun Han

    (Guangxi Key Laboratory of Power System Optimization and Energy Technology, Guangxi University, Nanning 530000, China)

  • Hongzheng Li

    (Guangxi Key Laboratory of Power System Optimization and Energy Technology, Guangxi University, Nanning 530000, China)

  • Tengyue Zhang

    (Guangxi Key Laboratory of Power System Optimization and Energy Technology, Guangxi University, Nanning 530000, China)

  • Fengyuan Chen

    (Guangxi Key Laboratory of Power System Optimization and Energy Technology, Guangxi University, Nanning 530000, China)

Abstract

The traveling wave protection of high voltage direct current (HVDC) transmission lines is susceptible to the influence of transition resistance. As a backup protection, current differential protection has absolute selectivity, but usually requires an increase in delay to avoid misoperation caused by distributed capacitance on the line, resulting in a longer action time. Based on this, a two-terminal directional protection method for HVDC transmission lines is proposed based on Sparrow Search Algorithm (SSA)-Variational Mode Decomposition (VMD) and Hilbert phase difference. On the basis of analyzing the directional characteristics of the current fault component at both ends of the rectifier and inverter sides under different faults, SSA is first used to optimize the parameters of VMD. The residual components representing the direction of the current fault component at both ends are extracted through VMD, and then the Hilbert phase difference of the residual components at both ends is calculated to identify faults inside and outside the line area. In addition, fault pole selection can be achieved based on the ratio of the sum of multi-band Hilbert energy of single-terminal voltage fault components at the positive and negative poles. Simulation experiments have shown that the proposed protection scheme can quickly and effectively identify fault and has good tolerance to transition resistance and noise interference.

Suggested Citation

  • Shuhao Liu & Kunlun Han & Hongzheng Li & Tengyue Zhang & Fengyuan Chen, 2023. "A Two-Terminal Directional Protection Method for HVDC Transmission Lines of Current Fault Component Based on Improved VMD-Hilbert Transform," Energies, MDPI, vol. 16(19), pages 1-21, October.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:19:p:6987-:d:1255119
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    References listed on IDEAS

    as
    1. Perez-Molina, M.J. & Larruskain, D.M. & Eguia Lopez, P. & Buigues, G. & Valverde, V., 2021. "Review of protection systems for multi-terminal high voltage direct current grids," Renewable and Sustainable Energy Reviews, Elsevier, vol. 144(C).
    2. Lei Wang & Hui Liu & Le Van Dai & Yuwei Liu, 2018. "Novel Method for Identifying Fault Location of Mixed Lines," Energies, MDPI, vol. 11(6), pages 1-19, June.
    3. Derong Luo & Ting Wu & Ming Li & Benshun Yi & Haibo Zuo, 2020. "Application of VMD and Hilbert Transform Algorithms on Detection of the Ripple Components of the DC Signal," Energies, MDPI, vol. 13(4), pages 1-20, February.
    Full references (including those not matched with items on IDEAS)

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