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Inertia and Droop Frequency Control Strategy of Doubly-Fed Induction Generator Based on Rotor Kinetic Energy and Supercapacitor

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  • Xiangwu Yan

    (Key Laboratory of Distributed Energy Storage and Micro-Grid of Hebei Province, North China Electric Power University, Baoding 071003, China)

  • Xuewei Sun

    (Key Laboratory of Distributed Energy Storage and Micro-Grid of Hebei Province, North China Electric Power University, Baoding 071003, China)

Abstract

The large-scale application of wind power eases the shortage of conventional energy, but it also brings great hidden danger to the stability and security of the power grid because wind power has no ability for frequency regulation. When doubly-fed induction generator (DFIG) based wind turbines use rotor kinetic energy to participate in frequency regulation, it can effectively respond to frequency fluctuation, but has the problems of secondary frequency drop and output power loss. Furthermore, it cannot provide long-term power support. To solve these problems, a coordinated frequency control strategy based on rotor kinetic energy and supercapacitor was proposed in this paper. In order to ensure the DFIG provides fast and long-term power support, a supercapacitor was used to realize the droop characteristic, and rotor kinetic energy was used to realize the inertia characteristic like synchronous generator (SG). Additionally, the supercapacitor is also controlled to compensate for the power dip of the DFIG when rotor kinetic energy exits inertia support to avoid secondary frequency drop. Additionally, a new tracking curve of DFIG rotor speed and output power was adopted to reduce the power loss during rotor speed recovery.

Suggested Citation

  • Xiangwu Yan & Xuewei Sun, 2020. "Inertia and Droop Frequency Control Strategy of Doubly-Fed Induction Generator Based on Rotor Kinetic Energy and Supercapacitor," Energies, MDPI, vol. 13(14), pages 1-19, July.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:14:p:3697-:d:386254
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    References listed on IDEAS

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    1. Pradhan, Chittaranjan & Bhende, Chandrashekhar Narayan & Samanta, Anik Kumar, 2018. "Adaptive virtual inertia-based frequency regulation in wind power systems," Renewable Energy, Elsevier, vol. 115(C), pages 558-574.
    2. Liansong Xiong & Yujun Li & Yixin Zhu & Ping Yang & Zhirong Xu, 2018. "Coordinated Control Schemes of Super-Capacitor and Kinetic Energy of DFIG for System Frequency Support," Energies, MDPI, vol. 11(1), pages 1-16, January.
    3. Tiejiang Yuan & Jinjun Wang & Yuhang Guan & Zheng Liu & Xinfu Song & Yong Che & Wenping Cao, 2018. "Virtual Inertia Adaptive Control of a Doubly Fed Induction Generator (DFIG) Wind Power System with Hydrogen Energy Storage," Energies, MDPI, vol. 11(4), pages 1-16, April.
    4. Xiangwu Yan & Zijun Song & Yun Xu & Ying Sun & Ziheng Wang & Xuewei Sun, 2018. "Study of Inertia and Damping Characteristics of Doubly Fed Induction Generators and Improved Additional Frequency Control Strategy," Energies, MDPI, vol. 12(1), pages 1-15, December.
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    Cited by:

    1. M. A. Hannan & Ali Q. Al-Shetwi & M. S. Mollik & Pin Jern Ker & M. Mannan & M. Mansor & Hussein M. K. Al-Masri & T. M. Indra Mahlia, 2023. "Wind Energy Conversions, Controls, and Applications: A Review for Sustainable Technologies and Directions," Sustainability, MDPI, vol. 15(5), pages 1-30, February.
    2. Tingting Sun & Hongru Shi & Lei Ren & Jiejie Huang, 2023. "Analysis of Frequency Regulation Capability of Doubly Fed Induction Generator and Supercapacitor Energy Storage Based on Dynamic Power Flow," Energies, MDPI, vol. 16(20), pages 1-17, October.
    3. SungHoon Lim & Seung-Mook Baek & Jung-Wook Park, 2022. "Selection of Inertial and Power Curtailment Control Methods for Wind Power Plants to Enhance Frequency Stability," Energies, MDPI, vol. 15(7), pages 1-14, April.
    4. Jesus Castro Martinez & Santiago Arnaltes & Jaime Alonso-Martinez & Jose Luis Rodriguez Amenedo, 2021. "Contribution of Wind Farms to the Stability of Power Systems with High Penetration of Renewables," Energies, MDPI, vol. 14(8), pages 1-21, April.
    5. Zhishuai Hu & Yongfeng Ren & Qingtian Meng & Pingping Yun & Chenzhi Fang & Yu Pan, 2023. "Improvement of Frequency Support for a DFIG Using a Virtual Synchronous Generator Strategy at Large Power Angles," Energies, MDPI, vol. 16(2), pages 1-20, January.
    6. Haoming Liu & Suxiang Yang & Xiaoling Yuan, 2021. "Inertia Control Strategy of DFIG-Based Wind Turbines Considering Low-Frequency Oscillation Suppression," Energies, MDPI, vol. 15(1), pages 1-15, December.

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