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Frequency Inertia Response Control of SCESS-DFIG under Fluctuating Wind Speeds Based on Extended State Observers

Author

Listed:
  • Dongyang Sun

    (School of Electrical Engineering & Automation, Harbin Institute of Technology, Harbin 150001, China)

  • Lizhi Sun

    (School of Electrical Engineering & Automation, Harbin Institute of Technology, Harbin 150001, China)

  • Fengjiang Wu

    (School of Electrical Engineering & Automation, Harbin Institute of Technology, Harbin 150001, China)

  • Guangxin Zu

    (School of Electrical Engineering & Automation, Harbin Institute of Technology, Harbin 150001, China)

Abstract

Insufficient frequency regulation capability and system inertia reduction are common problems encountered in a power grid with high wind power penetration, mainly due to the reason that the rotor energy in doubly fed induction generators (DFIGs) is isolated by the grid side converters (GSCs), and also due to the randomness and intermittence of wind power which are not as stable as traditional thermal power sources. In this paper, the frequency inertia response control of a DFIG system under variable wind speeds was investigated. First, a DFIG system topology with rotor-side supercapacitor energy storage system (SCESS-DFIG) was introduced. Then a control strategy for frequency inertia response of SCESS-DFIG power grid under fluctuating wind speed was designed, with two extended state observers (ESOs) which estimate the mechanical power captured by the DFIG and the required inertia response power at the grid frequency drops, respectively. Based on one inconstant wind speed model and the SCESS-DFIG system model adopting the control strategy established, one power grid system consisting of three SCESS-DFIGs with different wind speed trends and a synchronous generator was simulated. The simulation results verified the effectiveness of the SCESS-DFIG system structure and the control strategy proposed.

Suggested Citation

  • Dongyang Sun & Lizhi Sun & Fengjiang Wu & Guangxin Zu, 2018. "Frequency Inertia Response Control of SCESS-DFIG under Fluctuating Wind Speeds Based on Extended State Observers," Energies, MDPI, vol. 11(4), pages 1-27, April.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:4:p:830-:d:139430
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    References listed on IDEAS

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    1. 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.
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    Cited by:

    1. Changgang Li & Zhi Hang & Hengxu Zhang & Qi Guo & Yihua Zhu & Vladimir Terzija, 2020. "Evaluation of DFIGs’ Primary Frequency Regulation Capability for Power Systems with High Penetration of Wind Power," Energies, MDPI, vol. 13(23), pages 1-19, November.
    2. Ana Fernández-Guillamón & Antonio Vigueras-Rodríguez & Emilio Gómez-Lázaro & Ángel Molina-García, 2018. "Fast Power Reserve Emulation Strategy for VSWT Supporting Frequency Control in Multi-Area Power Systems," Energies, MDPI, vol. 11(10), pages 1-20, October.
    3. Ana Fernández-Guillamón & Jorge Villena-Lapaz & Antonio Vigueras-Rodríguez & Tania García-Sánchez & Ángel Molina-García, 2018. "An Adaptive Frequency Strategy for Variable Speed Wind Turbines: Application to High Wind Integration Into Power Systems," Energies, MDPI, vol. 11(6), pages 1-21, June.

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