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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Proceedings ArticleDOI
Decentralized Model Predictive Voltage Control of Islanded DC Microgrids
TL;DR: A novel decentralized control approach for islanded direct-current (DC) microgrids (MGs) based on model predictive control (MPC) to regulate the distributed generation unit (DGU) output voltages, i.e. the voltages of the point of common coupling (PCC).
Journal ArticleDOI
Analysis Methodology for Evaluation of Time-Delay Impact on Network-Based System for Droop-Controlled AC Microgrid
TL;DR: A suit of analytical methodology is proposed, where both delay-insensitive and delay-sensitive control strategies of network-based system have their theoretical methods and different problem-solving paths, to investigate and handle the impacts of time-delay.
Journal ArticleDOI
A Novel Adaptive Distributed Secondary Voltage Controller With High Convergence Rate for Islanded Microgrids
TL;DR: A novel adaptive distributed secondary voltage controller for islanded microgrids (MGs) based on a novel consensus protocol and a new control law that has a higher convergence rate than the traditional consensus protocol is proposed and its performance is quite satisfactory under large uncertainties.
Book ChapterDOI
Optimal distributed secondary control for an islanded microgrid
Yinliang Xu,Zhongkai Yi +1 more
TL;DR: This chapter discusses an optimal distributed control strategy for multiple distributed generators (DGs) in the microgrid of islanded mode, which can achieve accurate reactive power sharing and regulate the average voltage magnitude of all the DGs to an expected value.
Journal ArticleDOI
Consensus-Based Delay-Tolerant Distributed Secondary Control Strategy for Droop Controlled AC Microgrids
TL;DR: In this article, a fully-distributed and delay-tolerant secondary control scheme for droop-controlled AC microgrids is proposed, which is inspired by the cooperative control concept of multi-agent systems.
References
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Journal ArticleDOI
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.