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Coupling Neighboring Microgrids for Overload Management Based on Dynamic Multicriteria Decision-Making

Coupling Neighboring Microgrids for Overload Management Based on Dynamic Multicriteria Decision-Making Coupling Neighboring Microgrids for Overload Management Based on Dynamic Multicriteria Decision-Making Abstract: A microgrid (MG) is expected to supply its local loads independently; however, due to intermittency of wind and solar-based energy resources as well as the load uncertainty, it is probable that the MG experiences power deficiency (overloading). This problem can be mitigated by coupling the overloaded MG to another neighboring MG that has surplus power. Considering a distribution network composed…

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The Analysis and Development of a Power Flow-Based Controller for Microgrid Systems

The Analysis and Development of a Power Flow-Based Controller for Microgrid Systems The Analysis and Development of a Power Flow-Based Controller for Microgrid Systems Abstract: This paper presents the analysis, development, and implementation of a new controller for microgrid systems. The developed controller is structured to produce command values for the active and reactive powers ( PC and QC ), and d– q-axis voltage components ( vdC and vqC) for each bus in the microgrid system at hand. Values for PC,QC,vdC, and vqC…

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Operational Planning of Electric Vehicles for Balancing Wind Power and Load Fluctuations in a Microgrid

Operational Planning of Electric Vehicles for Balancing Wind Power and Load Fluctuations in a Microgrid Operational Planning of Electric Vehicles for Balancing Wind Power and Load Fluctuations in a Microgrid Abstract: The intermittency of renewable energy poses challenges on the reliable and economical operations of microgrids. This paper considers a grid-connected microgrid model which consists of a logistics distribution system, where electric vehicles (EVs) depart from the depot, deliver the goods to multiple demand loads, and then, return to the depot. Based on…

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Superimposed Adaptive Sequence Current Based Microgrid Protection: A New Technique

Superimposed Adaptive Sequence Current Based Microgrid Protection: A New Technique Superimposed Adaptive Sequence Current Based Microgrid Protection: A New Technique Abstract: In this paper, an adaptive directional overcurrent relaying technique based on the positive-sequence (PSQ) and negative-sequence (NSQ) superimposed currents is proposed for microgrid protection. Due to the change in mode of operation of microgrid, the level and direction of prefault current are altered. On occurrence of a fault in any line section of the microgrid, coordination between the primary and backup overcurrent…

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Repetitive Controller for VSIs in Droop-Based AC-Microgrid

Repetitive Controller for VSIs in Droop-Based AC-Microgrid Repetitive Controller for VSIs in Droop-Based AC-Microgrid Abstract: A major requirement of ac-microgrid is to keep on feeding its connected load at regulated voltage and frequency, which is difficult to achieve especially in inverter-based microgrid. In modern distribution system, most of the loads are nonlinear in nature and draw harmonic current. The variable load with the nonlinear characteristics may distort the output voltage and degrade the power quality. In order to mitigate the negative impact of…

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Decentralized Method for Load Sharing and Power Management in a Hybrid Single/Three-Phase-Islanded Microgrid Consisting of Hybrid Source PV/Battery Units

Decentralized Method for Load Sharing and Power Management in a Hybrid Single/Three-Phase-Islanded Microgrid Consisting of Hybrid Source PV/Battery Units Decentralized Method for Load Sharing and Power Management in a Hybrid Single/Three-Phase-Islanded Microgrid Consisting of Hybrid Source PV/Battery Units Abstract: This paper proposes a new decentralized power management and load sharing method for a photovoltaic (PV)-based, hybrid single/three-phase-islanded microgrid consisting of various PV units, battery units, and hybrid PV/battery units. The proposed method is not limited to the systems with separate PV and battery…

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Nonlinear Control of a DC MicroGrid for the Integration of Photovoltaic Panels

Nonlinear Control of a DC MicroGrid for the Integration of Photovoltaic Panels Nonlinear Control of a DC MicroGrid for the Integration of Photovoltaic Panels Abstract: New connection constraints for the power network (grid codes) require more flexible and reliable systems, with robust solutions to cope with uncertainties and intermittence from renewable energy sources (renewables), such as photovoltaic (PV) arrays. The interconnection of such renewables with storage systems through a direct current (DC) MicroGrid can fulfill these requirements. A “Plug and Play” approach based…

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