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Mechanism Analysis of the Effect of the Equivalent Proportional Coefficient of Inertia Control for a Doubly Fed Wind Generator on Frequency Stability in Extreme Environments

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  • Haopeng Zhang

    (Key Laboratory of Cleaner Intelligent Control on Coal & Electricity, Ministry of Education, Taiyuan University of Technology (School of Electrical and Power Engineering, Taiyuan University of Technology), Taiyuan 030024, China)

  • Xiangyu Zhai

    (Key Laboratory of Cleaner Intelligent Control on Coal & Electricity, Ministry of Education, Taiyuan University of Technology (School of Electrical and Power Engineering, Taiyuan University of Technology), Taiyuan 030024, China)

  • Jiahui Zhang

    (Shanxi Energy Internet Research Institute, Taiyuan 030024, China)

  • Xiang Bai

    (Shanxi Energy Internet Research Institute, Taiyuan 030024, China)

  • Zening Li

    (Key Laboratory of Cleaner Intelligent Control on Coal & Electricity, Ministry of Education, Taiyuan University of Technology (School of Electrical and Power Engineering, Taiyuan University of Technology), Taiyuan 030024, China
    Shanxi Energy Internet Research Institute, Taiyuan 030024, China)

Abstract

With the large-scale access of a doubly fed wind generator (DFWG) with inertia adjustment capability to the polar microgrid, the frequency stability characteristics of the polar microgrid become more complicated. To enhance DWFG frequency stability and ensure the safe and reliable operation of polar microgrids, a DFWG connected to a two-region interconnected polar microgrid is used as the research background for this paper. Firstly, the equivalent model of two regional inertia centers is derived, and the effect of DFWG virtual inertia on the rotor motion equation of the regional inertia center is analyzed when a DFWG is directly connected to the polar microgrid. Then, from the point of view of the transient energy of the system, the influence of the equivalent proportional coefficient of virtual inertia control of the DFWG in two regions on the transient energy during the acceleration and deceleration of the system is studied when the swing direction of the system power angle is different, and the influence mechanism of the swing direction on the frequency stability is further investigated. Finally, the maximum frequency offset is proposed to evaluate the frequency stability of the system, and the two-region system simulation model is built into the PSASP 7.4.1 simulation software to verify the correctness of the proposed theory.

Suggested Citation

  • Haopeng Zhang & Xiangyu Zhai & Jiahui Zhang & Xiang Bai & Zening Li, 2024. "Mechanism Analysis of the Effect of the Equivalent Proportional Coefficient of Inertia Control for a Doubly Fed Wind Generator on Frequency Stability in Extreme Environments," Sustainability, MDPI, vol. 16(12), pages 1-17, June.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:12:p:4965-:d:1412275
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    References listed on IDEAS

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    1. Mitra, Arghya & Chatterjee, Dheeman, 2013. "A sensitivity based approach to assess the impacts of integration of variable speed wind farms on the transient stability of power systems," Renewable Energy, Elsevier, vol. 60(C), pages 662-671.
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