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Improved Frequency Control Strategy for Offshore Wind Farm Integration via VSC-HVDC

Author

Listed:
  • Rui Zeng

    (Key Laboratory of Smart Grid, Ministry of Education, Tianjin University, Tianjin 300072, China)

  • Yizhen Wang

    (Key Laboratory of Smart Grid, Ministry of Education, Tianjin University, Tianjin 300072, China)

Abstract

Voltage source converter based high voltage DC system (VSC-HVDC) has become a very promising solution to integrate offshore wind farm. However, the equivalent inertia of the modern power system with large renewable energy integration becomes small, which will arouse some frequency stability problems. To tackle this problem, this paper proposes an improved frequency regulation strategy for VSC-HVDC integrated offshore wind farm. Firstly, in the frequency decrease stage, the rotor kinetic energy of wind turbines (WTs) is used to suppress the decrease of the frequency, and the control parameters are determined to make full use of the mechanical power and rotor kinetic energy of WTs, the frequency nadir is improved. Secondly, in the rotor speed recovery stage, the DC capacitors of VSC-HVDC are used to release power to compensate the deficiency value of wind farm output power and avoid the secondary frequency drop (SFD) problem. Lastly, the simulation is conducted in PSCAD/EMTDC to validate the effectiveness of the proposed coordinated frequency control strategy.

Suggested Citation

  • Rui Zeng & Yizhen Wang, 2022. "Improved Frequency Control Strategy for Offshore Wind Farm Integration via VSC-HVDC," Energies, MDPI, vol. 15(17), pages 1-11, August.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:17:p:6363-:d:903167
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    Citations

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    Cited by:

    1. Nour A. Mohamed & Hany M. Hasanien & Abdulaziz Alkuhayli & Tlenshiyeva Akmaral & Francisco Jurado & Ahmed O. Badr, 2023. "Hybrid Particle Swarm and Gravitational Search Algorithm-Based Optimal Fractional Order PID Control Scheme for Performance Enhancement of Offshore Wind Farms," Sustainability, MDPI, vol. 15(15), pages 1-25, August.
    2. Chi Hsiang Lin, 2022. "The Impact of Integration of the VSC-HVDC Connected Offshore Wind Farm on Torsional Vibrations of Steam Turbine Generators," Sustainability, MDPI, vol. 15(1), pages 1-22, December.

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