Enhanced reactive power sharing and voltage restoration based on adaptive virtual impedance and consensus algorithm


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Keddar, M., Doumbia, M., Belmokhtar, K. et Krachai, M. (2022). Enhanced reactive power sharing and voltage restoration based on adaptive virtual impedance and consensus algorithm. Energies, 15 (10). ISSN 1996-1073 DOI 10.3390/en15103480

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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. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.

Type de document: Article
Mots-clés libres: Consensus control Distributed generation Droop control DSPACE controller Microgrids Virtual impedance Distributed power generation MATLAB Reactive power Restoration Two term control systems Consensus algorithms Impedance mismatch Line impedance Microgrid Power voltage Reactive power sharing Controllers
Date de dépôt: 22 déc. 2022 19:02
Dernière modification: 22 déc. 2022 19:02
Version du document déposé: Version officielle de l'éditeur
URI: https://depot-e.uqtr.ca/id/eprint/10327

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