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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Distributed Cooperative Voltage Control for Grid-Following and Grid-Forming Distributed Generators in Islanded Microgrids
TL;DR: In this article , a unified distributed cooperative voltage control approach for grid-following (GFL) and grid-forming (GFM) DGs is presented, which consists of a unified modeling method and a novel range-consensus-based distributed control algorithm.
Journal ArticleDOI
Cooperative Fault-Estimation-Based Event-Triggered Fault-Tolerant Voltage Restoration in Islanded AC Microgrids
TL;DR: In this article , an adaptive event-triggered fault-tolerant (ETFT) control protocol is designed to compensate for the effects of actuator faults in the DGs, thereby restoring the voltage to the reference value.
Journal ArticleDOI
Consensus active power sharing for islanded microgrids based on distributed angle droop control
Journal ArticleDOI
Distributed robust secondary control of islanded microgrid with stochastic time-varying delays and external disturbances
TL;DR: In this paper , a distributed secondary robust control is proposed to realize the robust stability of voltage and frequency in an islanded microgrid with multiple distributed generation units (DGs), where stochastic time-varying communication delays and external disturbances have a great impact on its operation.
Proceedings ArticleDOI
Kron Reduction and L 2 -Stability for Plug-and-Play Frequency Control of Microgrids
TL;DR: A consensus-based secondary frequency control scheme for islanded microgrids that only deals with droop equation and secondary control variables, and coincides with the hierarchical control concept, is proposed.
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.