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Enhanced Reactive Power Sharing and Voltage Restoration Based on Adaptive Virtual Impedance and Consensus Algorithm

Author

Listed:
  • Mohamed Keddar

    (Department of Electrical and Computer Engineering, Université du Québec à Trois-Rivières, Trois-Rivières, QC G8Z 4M3, Canada)

  • Mamadou Lamine Doumbia

    (Department of Electrical and Computer Engineering, Université du Québec à Trois-Rivières, Trois-Rivières, QC G8Z 4M3, Canada)

  • Karim Belmokhtar

    (Research and Innovation, Nergica, Gaspé, QC G4X 1G2, Canada)

  • Mohamed Della Krachai

    (Department of Electrical Engineering, University of Science and Technology Mohamed Boudiaf, Oran 31000, Algeria)

Abstract

In this paper, power-sharing management control on an AC islanded microgrid is investigated to achieve accurate reactive power sharing. The droop control method is primarily used to manage the active and reactive power sharing among the DGs in the microgrid. However, the line impedance mismatch causes unbalanced reactive power sharing. As a solution a consensus-based adaptive virtual impedance controller is proposed, where the consensus algorithm is used to set the reactive power mismatch; then a virtual impedance correction term is generated through a proportional-integral controller to eliminate the line impedance mismatch. Thus, reactive power sharing is achieved without knowledge of the line impedances or using a central controller. Moreover, the consensus algorithm is used to restore the AC bus voltage to the nominal value by estimating the DGs average voltage using neighbor communication to compensate for the decreased magnitude of the voltage reference. Matlab/Simulink is used to validate the accuracy of reactive power sharing and voltage restauration achievement of the proposed solution through simulation of different scenarios. In addition, a dSPACE DS1104 is used within a developed experimental testbench based on two parallel DGs to validate the effectiveness of the proposed solution in the real world.

Suggested Citation

  • Mohamed Keddar & Mamadou Lamine Doumbia & Karim Belmokhtar & Mohamed Della Krachai, 2022. "Enhanced Reactive Power Sharing and Voltage Restoration Based on Adaptive Virtual Impedance and Consensus Algorithm," Energies, MDPI, vol. 15(10), pages 1-19, May.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:10:p:3480-:d:812208
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    References listed on IDEAS

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    1. Li Yu & Di Shi & Guangyue Xu & Xiaobin Guo & Zhen Jiang & Chaoyang Jing, 2018. "Consensus Control of Distributed Energy Resources in a Multi-Bus Microgrid for Reactive Power Sharing and Voltage Control," Energies, MDPI, vol. 11(10), pages 1-17, October.
    2. Ahmed S. Alsafran & Malcolm W. Daniels, 2020. "Consensus Control for Reactive Power Sharing Using an Adaptive Virtual Impedance Approach," Energies, MDPI, vol. 13(8), pages 1-26, April.
    3. Zhilin Lyu & Qing Wei & Yiyi Zhang & Junhui Zhao & Emad Manla, 2018. "Adaptive Virtual Impedance Droop Control Based on Consensus Control of Reactive Current," Energies, MDPI, vol. 11(7), pages 1-17, July.
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