A Novel Optimal Power Allocation Control System with High Convergence Rate for DC Microgrids Cluster

A novel, fully distributed controller with a rapid convergence rate is developed to ensure the optimal loading dispatch for interconnected DC MGs. It comprises local and global-control levels, handling the economic load allocations in a finite-time manner, for distinct MGs and cluster of MGs, respec...

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Main Authors: Mohamed Zaery, Panbao Wang, Wei Wang, Dianguo Xu
Format: Article
Language:English
Published: MDPI AG 2022-05-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/15/11/3994
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author Mohamed Zaery
Panbao Wang
Wei Wang
Dianguo Xu
author_facet Mohamed Zaery
Panbao Wang
Wei Wang
Dianguo Xu
author_sort Mohamed Zaery
collection DOAJ
description A novel, fully distributed controller with a rapid convergence rate is developed to ensure the optimal loading dispatch for interconnected DC MGs. It comprises local and global-control levels, handling the economic load allocations in a finite-time manner, for distinct MGs and cluster of MGs, respectively. The local-control layer guarantees MG’s economic operation by matching the incremental costs (ICs) of all DGs, respecting the power equilibrium among generations and demands, DGs’ generation limits, as well as the transmission line losses. Furthermore, the economic operation of battery energy sources is considered, in the optimization problem, to strengthen the overall reliability and maximize energy arbitrage. The global controller adjusts MGs’ voltage references to determine the optimal exchanged power, between MGs, for reducing the global total generation cost (TGC). A rigorous analysis is developed to confirm the stable convergence of the developed controller. Extensive simulation case studies demonstrate the superiority of the proposed control system.
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spelling doaj.art-cfe6eed229c74099af739561130c6a852023-11-23T13:58:34ZengMDPI AGEnergies1996-10732022-05-011511399410.3390/en15113994A Novel Optimal Power Allocation Control System with High Convergence Rate for DC Microgrids ClusterMohamed Zaery0Panbao Wang1Wei Wang2Dianguo Xu3Department of Electrical Engineering, Faculty of Engineering, Aswan University, Aswan 81542, EgyptDepartment of Electrical Engineering, Harbin Institute of Technology, Harbin 150001, ChinaDepartment of Electrical Engineering, Harbin Institute of Technology, Harbin 150001, ChinaDepartment of Electrical Engineering, Harbin Institute of Technology, Harbin 150001, ChinaA novel, fully distributed controller with a rapid convergence rate is developed to ensure the optimal loading dispatch for interconnected DC MGs. It comprises local and global-control levels, handling the economic load allocations in a finite-time manner, for distinct MGs and cluster of MGs, respectively. The local-control layer guarantees MG’s economic operation by matching the incremental costs (ICs) of all DGs, respecting the power equilibrium among generations and demands, DGs’ generation limits, as well as the transmission line losses. Furthermore, the economic operation of battery energy sources is considered, in the optimization problem, to strengthen the overall reliability and maximize energy arbitrage. The global controller adjusts MGs’ voltage references to determine the optimal exchanged power, between MGs, for reducing the global total generation cost (TGC). A rigorous analysis is developed to confirm the stable convergence of the developed controller. Extensive simulation case studies demonstrate the superiority of the proposed control system.https://www.mdpi.com/1996-1073/15/11/3994DC microgrids clustereconomic dispatchdistributed controlfinite-time consensus protocolbattery energy sources
spellingShingle Mohamed Zaery
Panbao Wang
Wei Wang
Dianguo Xu
A Novel Optimal Power Allocation Control System with High Convergence Rate for DC Microgrids Cluster
Energies
DC microgrids cluster
economic dispatch
distributed control
finite-time consensus protocol
battery energy sources
title A Novel Optimal Power Allocation Control System with High Convergence Rate for DC Microgrids Cluster
title_full A Novel Optimal Power Allocation Control System with High Convergence Rate for DC Microgrids Cluster
title_fullStr A Novel Optimal Power Allocation Control System with High Convergence Rate for DC Microgrids Cluster
title_full_unstemmed A Novel Optimal Power Allocation Control System with High Convergence Rate for DC Microgrids Cluster
title_short A Novel Optimal Power Allocation Control System with High Convergence Rate for DC Microgrids Cluster
title_sort novel optimal power allocation control system with high convergence rate for dc microgrids cluster
topic DC microgrids cluster
economic dispatch
distributed control
finite-time consensus protocol
battery energy sources
url https://www.mdpi.com/1996-1073/15/11/3994
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