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
Beat Frequency Oscillation Analysis for Power Electronic Converters in DC Nanogrid Based on Crossed Frequency Output Impedance Matrix Model
TL;DR: In this article, a crossed frequency output impedance matrix model is proposed to describe the terminal characteristics of a dc-dc converter around its switching frequency range, and a high-frequency equivalent circuit model for the converter is then developed to predict the beat frequency oscillation in parallel and cascaded systems, which results from the interaction of power converters with different switching frequencies.
Journal ArticleDOI
Scalable Energy Management for Low Voltage Microgrids Using Multi-Agent Storage System Aggregation
TL;DR: In this article, a hierarchical control strategy is developed for an AC microgrid with distributed battery and ultracapacitor energy storage systems, where the energy management problem is made scalable by considering each type of energy storage system in aggregate.
Journal ArticleDOI
Distributed Predictive Control for Frequency and Voltage Regulation in Microgrids
TL;DR: The experimental and simulation results show that the proposed scheme responds properly to load variations, working within operating constraints, such as generation capacity and voltage range, and maintains the control objectives when a power unit is disconnected and reconnected without any user updating in the controllers.
Proceedings ArticleDOI
A comprehensive cloud-based real-time simulation framework for oblivious power routing in clusters of DC microgrids
M. Hadi Amini,Kianoosh G. Boroojeni,Tomislav Dragicevic,Arash Nejadpak,S. Sitharama Iyengar,Frede Blaabjerg +5 more
TL;DR: In this article, the authors proposed a novel cloud-based approach for solving the optimal power routing problem in clusters of DC microgrids, where each cluster includes multiple micro-grids which are connected via DC links in a multi-terminal DC system in a meshed network topology.
Proceedings ArticleDOI
Time-delay effect on load frequency control for microgrids
TL;DR: The time-delay effect on load frequency control (LFC) for power smart grids systems based on microgrids (MGs) is analyzed and a new cyber-physical modeling approach is used to identify system signals that are vulnerable to communication constraints.
References
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