Title
Distributed Voltage Regulation for Cyber-Physical Microgrids With Coupling Delays and Slow Switching Topologies
Abstract
In this paper, a robust neighbor-based distributed cooperative control strategy is proposed for dc cyber-physical microgrids, considering communication delays and slow switching topologies. The proposed robust control strategy can synchronize the voltages of a dc microgrid to the desired value while achieving the optimal load sharing for minimizing distributed energy resources’ (DERs) generation cost to achieve their economic operation at the same layer via a sparse communication network considering communication delays and slow switching topologies synchronously. The continuous interaction of physical–electrical and cyber networks generally exacerbates the occurrence of communication delays. Moreover, the arbitrary switching topologies could destroy the system’s transient characteristics at the switching time instants. To further quantify these impacts on the system stability, the communication delay and average switching dwell-time-dependent control conditions for the proposed control strategy are proved based on the Lyapunov–Krasovskii theory. Some sufficient conditions for the exponential stability of the cyber-physical delayed-switching system are developed, which guarantees the robustness of the proposed strategy against the communication delays and dynamically changing interaction topologies. The proposed control protocols are shown to be fully distributed and implemented through a sparse communication network. Finally, several cases on a modified IEEE 34-bus test network are investigated which demonstrate the effectiveness and performance of the results.
Year
DOI
Venue
2020
10.1109/TSMC.2019.2924612
IEEE Transactions on Systems, Man, and Cybernetics: Systems
Keywords
Field
DocType
Communication time-delay,dc microgrid,dwell time,neighbor-based cooperation,slow switching topology
Mathematical optimization,Coupling,Electronic engineering,Network topology,Cyber-physical system,Voltage regulation,Mathematics
Journal
Volume
Issue
ISSN
50
1
2168-2216
Citations 
PageRank 
References 
4
0.39
3
Authors
5
Name
Order
Citations
PageRank
Jingang Lai160.78
Xiaoqing Lu2728.87
Xinghuo Yu33954300.63
Antonello Monti440284.58
Hong Zhou52714.24