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Power Quality Management Strategy for High-Speed Railway Traction Power Supply System Based on MMC-RPC

Author

Listed:
  • Teng Li

    (School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China)

  • Yongbin Shi

    (School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China)

Abstract

This paper adopts the Modular Multilevel Converter Type Railway Power Conditioner (MMC-RPC) equipment to effectively manage the power quality of the high-speed railway traction power supply system including the reactive power and negative sequence component. Firstly, the single-phase model of the MMC was established to deduce the working characteristics of the MMC-RPC and its compensation principle for the traction power supply system with the v / v wiring transformer. Secondly, the adaptive VSG control strategy was adopted for the inverter of the MMC-RPC to provide dynamic inertial and damping support for the traction power supply system based on the virtual synchronous generator (VSG) control. Compared with the traditional double closed-loop (DCL) and VSG controls, it has better anti-disturbance and dynamic performance. The root locus analysis of control parameters based on a small signal model shows that VSG control can provide more stability margin. Furthermore, Differential Flatness Control (DFC) was used in the inner-loop controller to ensure the stable control of the inverter and the stability was verified by the Lyapunov stability analysis. For the rectifier of the MMC-RPC, a hierarchical three-level control strategy with system-level control, cluster-group voltage control, and inter-cluster voltage control for keeping the voltage balance was adopted. Finally, simulation results on the Matlab/Simulink platform verified the effectiveness and stability of the joint control applied in the MMC-RPC.

Suggested Citation

  • Teng Li & Yongbin Shi, 2022. "Power Quality Management Strategy for High-Speed Railway Traction Power Supply System Based on MMC-RPC," Energies, MDPI, vol. 15(14), pages 1-20, July.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:14:p:5205-:d:865624
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    Citations

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    Cited by:

    1. Ying Wang & Yueyang Xin & Ziyun Xie & Xiuqing Mu & Xiaoqiang Chen, 2023. "Research on Low-Frequency Stability under Emergency Power Supply Scheme of Photovoltaic and Battery Access Railway Traction Power Supply System," Energies, MDPI, vol. 16(12), pages 1-32, June.
    2. Luis A. M. Barros & António P. Martins & José Gabriel Pinto, 2023. "Balancing the Active Power of a Railway Traction Power Substation with an sp-RPC," Energies, MDPI, vol. 16(7), pages 1-22, March.

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