Journal ArticleDOI
Hierarchical control of droop-controlled DC and AC microgrids — a general approach towards standardization
Josep M. Guerrero,Juan C. Vasquez,Jose Matas,L.G. de Vicuna,Miguel Castilla +4 more
- Vol. 58, Iss: 1, pp 158-172
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TLDR
The hierarchical control derived from ISA-95 and electrical dispatching standards to endow smartness and flexibility to MGs is presented and results are provided to show the feasibility of the proposed approach.Abstract:
DC and AC Microgrids are key elements to integrate renewable and distributed energy resources as well as distributed energy storage systems. In the last years, efforts toward the standardization of these Microgrids have been made. In this sense, this paper present the hierarchical control derived from ISA-95 and electrical dispatching standards to endow smartness and flexibility to microgrids. The hierarchical control proposed consist of three levels: i) the primary control is based on the droop method, including an output impedance virtual loop; ii) the secondary control allows restoring the deviations produced by the primary control; and iii) the tertiary control manage the power flow between the microgrid and the external electrical distribution system. Results from a hierarchical-controlled microgrid are provided to show the feasibility of the proposed approach.read more
Citations
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Journal ArticleDOI
Impact of Clock Drifts on Communication-Free Secondary Control Schemes for Inverter-Based Islanded Microgrids
TL;DR: The study reveals advantages, drawbacks, and practical limitations of the control schemes caused by the clocks drifts and facilitates the selection of the most suitable control scheme for the practical deployment of microgrids.
Journal ArticleDOI
Degree of Influence of System States Transition on the Stability of a DC Microgrid
Santiago Sanchez,Marta Molinas +1 more
TL;DR: The paper presents a methodology that takes into account the structure of a DC microgrid system and evaluates its stability and real time simulation results present the grid behavior and validate the limits of operation.
Proceedings ArticleDOI
Microgrids operation based on master-slave cooperative control
TL;DR: The theoretical background, architecture, and algorithms of the proposed master-slave control, installed at the point of common coupling with the utility and the energy gateways, are discussed and the resulting microgrid performance is demonstrated by means of simulation and experimental results.
Journal ArticleDOI
A Fully Decentralized Adaptive Droop Optimization Strategy for Power Loss Minimization in Microgrids With PV-BESS
TL;DR: A fully decentralized adaptive droop optimization strategy for inverters is proposed for minimizing power loss during power transmission in islanded microgrids integrated with solar photovoltaic systems in a decentralized plug-and-play manner.
Journal ArticleDOI
Modelling of an Expandable, Reconfigurable, Renewable DC Microgrid for Off-Grid Communities
Joanne Kitson,Sam Williamson,Paul W Harper,Chris McMahon,Ges Rosenberg,Michael J Tierney,Karen Bell,Biraj Gautam +7 more
TL;DR: This paper proposes a DC microgrid system, comprising multiple locally available renewable energy sources in an off-grid rural community, based on a commissioned field study carried out in a rural, off- grid village in Nepal, which has solar and wind resource available.
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