Journal ArticleDOI
Distributed Robust Finite-Time Secondary Voltage and Frequency Control of Islanded Microgrids
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TLDR
In this article, a distributed cooperative secondary control for both voltage and frequency restoration of an islanded microgrid with droop-controlled inverter-based distributed generators (DGs) is presented.Abstract:
This paper presents a distributed, robust, finite-time secondary control for both voltage and frequency restoration of an islanded microgrid with droop-controlled inverter-based distributed generators (DGs). The distributed cooperative secondary control is fully distributed (i.e., uses only the information of neighboring DGs that can communicate with one another through a sparse communication network). In contrast to existing distributed methods that require a detailed model of the system (such as line impedances, loads, other DG units parameters, and even the microgrid configuration, which are practically unknown), the proposed protocols are synthesized by considering the unmodeled dynamics, unknown disturbances, and uncertainties in their models. The other novel idea in this paper is that the consensus-based distributed controllers restore the islanded microgrid's voltage magnitudes and frequency to their reference values for all DGs within finite time, irrespective of parametric uncertainties, unmodeled dynamics, and disturbances, while providing accurate real-power sharing. Moreover, the proposed method considers the coupling between the frequency and voltage of the islanded microgrid. Unlike conventional distributed controllers, the proposed approach quickly reaches consensus and exhibits a more accurate robust performance. Finally, we verify the proposed control strategy's performance using the MATLAB/SimPowerSystems toolbox.read more
Citations
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Journal ArticleDOI
Distributed Direct Power Sliding-Mode Control for Islanded AC Microgrids
TL;DR: In this paper , the authors developed a distributed direct power sliding-mode control for an islanded AC microgrid, which replaces the droop mechanism of each inverter with two separate sliding surfaces working as primary/secondary controllers.
Journal ArticleDOI
Distributed Finite-Time Secondary Frequency Control of Islanded Microgrids With Enhanced Operational Flexibility
TL;DR: A novel finite-time consensus-based secondary frequency control strategy that is independent of both the structure and operation states of the microgrid, which guarantees the effectiveness of the control strategy under flexible operating conditions is proposed.
Journal ArticleDOI
Online Kron Reduction for Economical Frequency Control of Microgrids
Babak Abdolmaleki,Qobad Shafiee +1 more
TL;DR: A distributed switched control system is proposed, which aims at frequency regulation and total generation cost minimization within a droop-based microgrid considering generator and line power constraints and achieves the minimization with the Lagrange method.
Proceedings ArticleDOI
Distributed control techniques for autonomous AC Microgrid-A brief review
Mahmuda Begum,Li Li,Jianguo Zhu +2 more
TL;DR: This research provides a brief review of distributed control structures used so far to control an autonomous AC microgrid system and trends and different approaches used until now are distinctly stated for understanding a brief overview.
Journal ArticleDOI
Fully Distributed Fault-Tolerant Event-Triggered Control of Microgrids Under Directed Graphs
TL;DR: In this article , an event-triggered fault-tolerant (ETFT) control strategy for voltage restoration in micro-grids was proposed, where the presence of partial loss of effectiveness (PLOE) and bias faults in the actuators were considered.
References
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Hierarchical control of droop-controlled DC and AC microgrids — a general approach towards standardization
TL;DR: 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.
Journal ArticleDOI
Modeling, Analysis and Testing of Autonomous Operation of an Inverter-Based Microgrid
TL;DR: In this paper, the authors developed a model for autonomous operation of inverter-based micro-grids, where each sub-module is modeled in state-space form and all are combined together on a common reference frame.
Journal ArticleDOI
Advanced Control Architectures for Intelligent Microgrids—Part I: Decentralized and Hierarchical Control
TL;DR: Decentralized, distributed, and hierarchical control of grid-connected and islanded microgrids that mimic the behavior of the mains grid is reviewed.
Journal ArticleDOI
Hierarchical Structure of Microgrids Control System
Ali Bidram,Ali Davoudi +1 more
TL;DR: This paper reviews the status of hierarchical control strategies applied to microgrids and discusses the future trends.
Book
Cooperative Control of Dynamical Systems: Applications to Autonomous Vehicles
TL;DR: In this paper, a new framework based on matrix theory is proposed to analyze and design cooperative controls for a group of individual dynamical systems whose outputs are sensed by or communicated to others in an intermittent, dynamically changing, and local manner.