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A VSG-Based Coordinated DC Voltage Control for VSC-HVDC to Participate in Frequency Regulation

Author

Listed:
  • Tianwen Zheng

    (Sichuan Energy Internet Research Institute, Tsinghua University, Chengdu 610213, China)

  • Laijun Chen

    (New Energy (Photovoltaic) Industry Research Center, Qinghai University, Xining 810016, China)

  • Yan Guo

    (Department of Electrical Engineering, Tsinghua University, Haidian District, Beijing 100084, China)

  • Wei Wei

    (Electric Power Research Institute, State Grid Sichuan Electric Power Company, Chengdu 610072, China)

  • Bo Zhou

    (Electric Power Research Institute, State Grid Sichuan Electric Power Company, Chengdu 610072, China)

  • Xinwei Sun

    (Electric Power Research Institute, State Grid Sichuan Electric Power Company, Chengdu 610072, China)

Abstract

In this paper, a coordinated DC voltage control strategy is proposed based on the VSG (virtual synchronous generator) method for the VSC-HVDC transmission system to participate in the frequency regulation of the connected weak grid. The voltage and power control capability of the VSC-HVDC is explored to attenuate the rate of change of frequency and to diminish the deviation of frequency. This is realized by the coordinated control of DC voltages at both the sending and the receiving ends with the VSG method. A small-signal model is established to investigate the dynamics of the control system. A tuning method for the selection of control parameters is also discussed in detail. The validity and superiority of the proposed control strategy are tested in the scenarios of sudden load changes and short circuit faults.

Suggested Citation

  • Tianwen Zheng & Laijun Chen & Yan Guo & Wei Wei & Bo Zhou & Xinwei Sun, 2021. "A VSG-Based Coordinated DC Voltage Control for VSC-HVDC to Participate in Frequency Regulation," Energies, MDPI, vol. 14(9), pages 1-13, May.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:9:p:2712-:d:550983
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    References listed on IDEAS

    as
    1. Pedro Roncero-Sánchez & Alfonso Parreño Torres & Javier Vázquez & Francisco Javier López-Alcolea & Emilio J. Molina-Martínez & Felix Garcia-Torres, 2021. "Multiterminal HVDC System with Power Quality Enhancement," Energies, MDPI, vol. 14(5), pages 1-22, February.
    2. Jelena Stojković & Aleksandra Lekić & Predrag Stefanov, 2020. "Adaptive Control of HVDC Links for Frequency Stability Enhancement in Low-Inertia Systems," Energies, MDPI, vol. 13(23), pages 1-20, November.
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    Cited by:

    1. Jihun So & Hyun Shin & Thai Nguyen Tran & Yeong-Jun Choi, 2022. "Decentralized Cooperative Active Power Control for Small-Scale Grids with High Renewable Penetration through VSC-HVDC," Sustainability, MDPI, vol. 14(15), pages 1-17, August.

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