Optimal Consensus-Based Event-Triggered Control Strategy for Resilient DC Microgrids

In this paper, an optimal consensus-based event-triggered control strategy is proposed to coordinate multiple distributed energy resources (DERs) in a dc microgrid. In the proposed control strategy, the average bus voltage restoration and the proportional current sharing are integrated by transformi...

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Bibliographic Details
Published in:IEEE transactions on power systems Vol. 36; no. 3; pp. 1807 - 1818
Main Authors: Shi, Mengxuan, Shahidehpour, Mohammad, Zhou, Quan, Chen, Xia, Wen, Jinyu
Format: Journal Article
Language:English
Published: New York IEEE 01.05.2021
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Admittance
Centralized control
Control stability
Current sharing
DC microgrid
Decentralized control
Distributed generation
Energy sources
Event triggered control
event-triggered communication
Microgrids
optimal consensus control
Optimization
PI-consensus algorithm
Resilience
Voltage control
Voltage measurement
ISSN:0885-8950, 1558-0679
Online Access:Get full text
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Summary:In this paper, an optimal consensus-based event-triggered control strategy is proposed to coordinate multiple distributed energy resources (DERs) in a dc microgrid. In the proposed control strategy, the average bus voltage restoration and the proportional current sharing are integrated by transforming the coordinated control problem into an optimization problem. The proposed solution enhances the resilience of the controller strategy in extreme events with uncertain initial states. Accordingly, the proposed control strategy provides a sampled-data-based event-triggered mechanism considering the limited availability of communication resources, which reduces communication burdens and avoids Zeno behaviors. The sufficient conditions are demonstrated using the Lyapunov-Krasovskii functional method for maintaining the stability of the proposed control strategy. Several case studies are presented using the PSCAD/EMTDC platform and the results are discussed to validate the effectiveness of the proposed control strategy for enhancing the dc microgrid resilience.
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ISSN:0885-8950
1558-0679
DOI:10.1109/TPWRS.2020.3026256