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An Improved Droop Control Scheme of a Doubly-Fed Induction Generator for Various Disturbances

Author

Listed:
  • Yien Xu

    (School of Electrical Engineering, Nantong University, Nantong 226019, China)

  • Pei Chen

    (School of Electrical Engineering, Nantong University, Nantong 226019, China)

  • Xinsong Zhang

    (School of Electrical Engineering, Nantong University, Nantong 226019, China)

  • Dejian Yang

    (Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology, Ministry of Education, Northeast Electric Power University, Jilin 132012, China)

Abstract

Doubly-fed induction generators (DFIGs) participate in the system frequency regulation using a fixed-coefficient droop control scheme. Nevertheless, the frequency-supporting capability of this control scheme with fixed gain is limited for different disturbances. This paper suggests an improved droop control scheme for a DFIG that can both alleviate the frequency nadir and maximum rate of change of frequency (ROCOF) during the frequency regulation. To achieve this, an adaptive droop control coefficient based on the ROCOF is suggested. The proposed droop control coefficient is a linear function of the ROCOF. Therefore, the proposed scheme can adjust the control coefficient according to the varying ROCOF. Simulation results clearly demonstrate that the proposed droop control scheme shows better effectiveness in improving the maximum ROCOF and frequency nadir under various sizes of disturbance, even in a varying wind speed.

Suggested Citation

  • Yien Xu & Pei Chen & Xinsong Zhang & Dejian Yang, 2021. "An Improved Droop Control Scheme of a Doubly-Fed Induction Generator for Various Disturbances," Energies, MDPI, vol. 14(23), pages 1-15, November.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:23:p:7980-:d:690914
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    Cited by:

    1. James Amankwah Adu & Alberto Berizzi & Francesco Conte & Fabio D’Agostino & Valentin Ilea & Fabio Napolitano & Tadeo Pontecorvo & Andrea Vicario, 2022. "Power System Stability Analysis of the Sicilian Network in the 2050 OSMOSE Project Scenario," Energies, MDPI, vol. 15(10), pages 1-33, May.

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