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Investigate on a Simplified Multi-Port Interline DC Power Flow Controller and Its Control Strategy

Author

Listed:
  • Wen Wu

    (National Active Distribution Network Technology Research Center, Beijing Jiaotong University, Beijing 100044, China)

  • Xuezhi Wu

    (National Active Distribution Network Technology Research Center, Beijing Jiaotong University, Beijing 100044, China
    Collaborative Innovation Center of Electric Vehicles, Beijing 100044, China)

  • Long Jing

    (National Active Distribution Network Technology Research Center, Beijing Jiaotong University, Beijing 100044, China)

  • Jingyuan Yin

    (The Institute of Electrical Engineering Chinese Academy of Sciences, Beijing 100190, China)

Abstract

A DC power flow controller (DCPFC) can help to facilitate power flow routing in the multi-terminal high-voltage direct current (HVDC) transmission system. Realizing its multi-port output can effectively improve the device regulate range and capability. Based on analysis of the traditional multi-port interline DC power flow controller (MI-DCPFC), this paper presents a switches reduced topology of MI-DCPFC. In addition, for solving the problem of coupling of the port-output voltage of the traditional MI-DCPFC, a novel control strategy based on carrier phase shifting pulse width modulation (CPS-PWM) is proposed. It implements the decoupling of the port-output voltage of MI-DCPFC, which can ensure completely independent tracking of the power flow regulating commands for different controlled lines. Moreover, key relationships between the system state variables are also analyzed and detailed in this study. Finally, the performance of the proposed controller and control strategy are confirmed with the simulation and experiment studies under different conditions.

Suggested Citation

  • Wen Wu & Xuezhi Wu & Long Jing & Jingyuan Yin, 2019. "Investigate on a Simplified Multi-Port Interline DC Power Flow Controller and Its Control Strategy," Energies, MDPI, vol. 12(13), pages 1-28, June.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:13:p:2480-:d:243571
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    References listed on IDEAS

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    1. Tongkun Lan & Yinhong Li & Xianzhong Duan & Jia Zhu, 2018. "Simplified Analytic Approach of Pole-to-Pole Faults in MMC-HVDC for AC System Backup Protection Setting Calculation," Energies, MDPI, vol. 11(2), pages 1-16, January.
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