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
Towards Grid of Microgrids: Seamless Transition between Grid-Connected and Islanded Modes of Operation
TL;DR: The main purpose of this paper is to provide a generic overview of the challenges and existing techniques available in literature to mitigate the voltage and frequency fluctuations at the MG's point of common coupling (PCC) and that of the utility grid; during the transition process.
Journal ArticleDOI
A Seamless Control Strategy of a Distributed Generation Inverter for the Critical Load Safety Under Strict Grid Disturbances
Tai-Sik Hwang,Sung-Yeul Park +1 more
TL;DR: In this paper, the authors proposed a seamless grid interconnection control strategy for distributed generations (DG) with renewable energy based on the performance analysis of conventional voltage and current control loops.
Journal ArticleDOI
Harmonic Power Sharing With Voltage Distortion Compensation of Droop Controlled Islanded Microgrids
Hassan Moussa,A. Shahin,Jean-Philippe Martin,Babak Nahid-Mobarakeh,Serge Pierfederici,Nazih Moubayed +5 more
TL;DR: The voltage distortion generated by nonlinear loads is described and a new harmonic droop control is proposed to reduce the voltage harmonic distortion at the point of common coupling (PCC) and to share the harmonic power between parallel islanded inverters controlled by classical frequency droop method.
Journal ArticleDOI
Intelligent Power Sharing of DC Isolated Microgrid Based on Fuzzy Sliding Mode Droop Control
TL;DR: The sliding mode droop controller is designed for compensating the uncertainties and disturbances to derive accurate power sharing based on T–S fuzzy model and is proved to be effective under variable operating conditions through PSIM/MATLAB simulation.
Journal ArticleDOI
Control strategies of parallel operated inverters in renewable energy application: A review
P. Monica,M. Kowsalya +1 more
TL;DR: In this article, a comprehensive review of control strategies of parallel inverter based on the communication and control loops is presented, where the authors also focus on the ancillary services that improve the performance indices of the system with multi loop approach of droop control in connection with micro grid.
References
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Book
Power System Stability and Control
TL;DR: In this article, the authors present a model for the power system stability problem in modern power systems based on Synchronous Machine Theory and Modelling, and a model representation of the synchronous machine representation in stability studies.
Journal ArticleDOI
The path of the smart grid
TL;DR: The electrical power industry is undergoing rapid change as discussed by the authors, and the major drivers that will determine the speed at which such transformations will occur will be the rising cost of energy, the mass electrification of everyday life, and climate change.
Journal ArticleDOI
Defining control strategies for MicroGrids islanded operation
TL;DR: In this article, the feasibility of control strategies to be adopted for the operation of a microgrid when it becomes isolated is evaluated and the need of storage devices and load shedding strategies is evaluated.
Journal ArticleDOI
Control of parallel connected inverters in stand-alone AC supply systems
TL;DR: In this article, a control scheme for parallel-connected inverters in a standalone AC supply system is presented, which uses feedback of only those variables that can be measured locally at the inverter and does not need communication of control signals between the inverters.
Journal ArticleDOI
Output impedance design of parallel-connected UPS inverters with wireless load-sharing control
TL;DR: This paper deals with the design of the output impedance of uninterruptible power system (UPS) inverters with parallel-connection capability, and proposes novel control loops to achieve both stable output impedance and proper power balance.