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Influence of Active Power Output and Control Parameters of Full-Converter Wind Farms on Sub-Synchronous Oscillation Characteristics in Weak Grids

Author

Listed:
  • Yafeng Hao

    (School of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, China)

  • Jun Liang

    (School of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, China
    School of Engineering, Cardiff University, Cardiff CF24 3AA, UK)

  • Kewen Wang

    (School of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, China)

  • Guanglu Wu

    (State Key Laboratory of Power Grid Safety and Energy Conservation (China Electric Power Research Institute), Beijing 100192, China)

  • Tibin Joseph

    (School of Engineering, Cardiff University, Cardiff CF24 3AA, UK)

  • Ruijuan Sun

    (School of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, China)

Abstract

Active power outputs of a wind farm connected to a weak power grid greatly affect the stability of grid-connected voltage source converter (VSC) systems. This paper studies the impact of active power outputs and control parameters on the subsynchronous oscillation characteristics of full-converter wind farms connected weak power grids. Eigenvalue and participation factor analysis was performed to identify the dominant oscillation modes of the system under consideration. The impact of active power output and control parameters on the damping characteristics of subsynchronous oscillation is analysed with the eigenvalue method. The analysis shows that when the phase-locked loop (PLL) proportional gain is high, the subsynchronous oscillation damping characteristics are worsened as the active power output increases. On the contrary, when the PLL proportional gain is small, the subsynchronous oscillation damping characteristics are improved as the active power output increases. By adjusting the control parameters in the PLL and DC link voltage controllers, system stability can be improved. Time-domain results verify the analysis and the findings.

Suggested Citation

  • Yafeng Hao & Jun Liang & Kewen Wang & Guanglu Wu & Tibin Joseph & Ruijuan Sun, 2020. "Influence of Active Power Output and Control Parameters of Full-Converter Wind Farms on Sub-Synchronous Oscillation Characteristics in Weak Grids," Energies, MDPI, vol. 13(19), pages 1-17, October.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:19:p:5225-:d:424652
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    Cited by:

    1. Khalid Alqunun & Tawfik Guesmi & Abdullah F. Albaker & Mansoor T. Alturki, 2020. "Stochastic Unit Commitment Problem, Incorporating Wind Power and an Energy Storage System," Sustainability, MDPI, vol. 12(23), pages 1-17, December.
    2. Lasantha Meegahapola & Siqi Bu, 2021. "Special Issue: “Wind Power Integration into Power Systems: Stability and Control Aspects”," Energies, MDPI, vol. 14(12), pages 1-4, June.

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