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Investigation on Dynamic Response of Grid-Tied VSC During Electromechanical Oscillations of Power Systems

Author

Listed:
  • Bo Wang

    (School of Electrical Engineering, Northeast Electric Power University, Jilin 132012, China)

  • Guowei Cai

    (School of Electrical Engineering, Northeast Electric Power University, Jilin 132012, China)

  • Deyou Yang

    (School of Electrical Engineering, Northeast Electric Power University, Jilin 132012, China)

  • Lixin Wang

    (School of Electrical Engineering, Northeast Electric Power University, Jilin 132012, China)

  • Zhiye Yu

    (Jilin Electric Power Company, State Power Investment, Jilin 132012, China)

Abstract

This study focuses on the dynamics of a grid-tied voltage source converter (GVSC) during electromechanical oscillations. A small-signal model with GVSC port variables (DC voltage and AC power) as the outputs and a terminal voltage vector as the input is derived to reveal the passive response of the GVSC on the basis of the power equation in the d–q coordinate system. An input–output transfer function matrix is constructed according to the proposed model. The frequency response of this matrix in the electromechanical bandwidth is described to reflect the dynamic behavior of the GVSC. The effects of the operation parameters, i.e., the grid strength, reference value of the control system, and grid voltage, on the dynamic behavior of the GVSC in the electromechanical bandwidth, are investigated using frequency domain sensitivity. Analysis results show that the GVSC generates responses with respect to the electromechanical mode. These responses have different sensitivities to the operation parameters. The IEEE 10-machine power system simulation is performed, and the power hardware-in-the-loop platform with the GVSC was applied to validate the analysis.

Suggested Citation

  • Bo Wang & Guowei Cai & Deyou Yang & Lixin Wang & Zhiye Yu, 2019. "Investigation on Dynamic Response of Grid-Tied VSC During Electromechanical Oscillations of Power Systems," Energies, MDPI, vol. 13(1), pages 1-16, December.
    • Handle: RePEc:gam:jeners:v:13:y:2019:i:1:p:94-:d:301304
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    References listed on IDEAS

    as
    1. Shijia Zhou & Fei Rong & Zhangtao Yin & Shoudao Huang & Yuebin Zhou, 2018. "HVDC Transmission Technology of Wind Power System with Multi-Phase PMSG," Energies, MDPI, vol. 11(12), pages 1-16, November.
    2. Peng Shen & Lin Guan & Zhenlin Huang & Liang Wu & Zetao Jiang, 2018. "Active-Current Control of Large-Scale Wind Turbines for Power System Transient Stability Improvement Based on Perturbation Estimation Approach," Energies, MDPI, vol. 11(8), pages 1-15, August.
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