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
Microgrid-Connected PV-Based Sources: A Novel Autonomous Control Method for Maintaining Maximum Power
TL;DR: In this paper, the authors studied the control configuration of a microgrid-connected photovoltaic (MCPV) source and proposed a control method to operate the MCPV in the MPP at all times except when there is a need to stabilize the frequency.
Journal ArticleDOI
An Improved Virtual Capacitor Algorithm for Reactive Power Sharing in Multi-Paralleled Distributed Generators
TL;DR: An improved reactive power sharing algorithm combining virtual impedance and virtual capacitor combined with virtual synchronous generator control strategy is proposed in this paper to improve reactive power shares precision, voltage control precision, and system stability simultaneously.
Journal ArticleDOI
Eigenvalue, Robustness and Time Delay Analysis of Hierarchical Control Scheme in Multi-DER Microgrid to Enhance Small/Large-Signal Stability Using Complementary Loop and Fuzzy Logic Controller
TL;DR: The proposed hierarchical control scheme adds new control loop to control the reactive power reference by a fuzzy logic controller to have the benefit of increasing the system stability margins and moreover, eigenvalue, robustness and time delay analysis of proposed control scheme are presented.
Journal ArticleDOI
The short-term operation of microgrids in a transactive energy architecture
TL;DR: In this paper, the authors address the challenges and solution frameworks for the short-term operation of distributed energy resources, controllable demands, and micro-grids in a transactive energy architecture, with a focus on the distributed energy management of hybrid AC/DC microgrids.
Journal ArticleDOI
Plug-and-Play Nonlinear Droop Construction Scheme to Optimize Islanded Microgrid Operations
TL;DR: A plug-and-play optimization scheme (PPOS) for developing nonlinear droop relations is proposed and developed and simulated in MATLAB/Simulink environment to verify the effectiveness of the proposed method and the performance of the non linear droop control.
References
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Output impedance design of parallel-connected UPS inverters with wireless load-sharing control
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