Accurate Power Sharing and Voltage Regulation for AC Microgrids: An Event-Triggered Coordinated Control Approach

The microgrid with the high proportion of renewable sources has become the trend of the future. However, the negative features, such as renewable energy perturbation, nonlinear counterpart, and so on, are prone to causing the low-power quality of the ac microgrid. To deal with these problems, this a...

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Bibliographic Details
Published in:IEEE transactions on cybernetics Vol. 52; no. 12; pp. 13001 - 13011
Main Authors: Ma, Dazhong, Liu, Menglin, Zhang, Huaguang, Wang, Rui, Xie, Xiangpeng
Format: Journal Article
Language:English
Published: Piscataway IEEE 01.12.2022
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Distributed generation
Distributed generators (DGs)
droop controls
Electric potential
event-triggered method
Impedance
Inverters
Linear control
Microgrids
multiagent consensus algorithm
Multiagent systems
Power system dynamics
Reactive power
singular perturbation method
Singular perturbation methods
Voltage
Voltage control
ISSN:2168-2267, 2168-2275, 2168-2275
Online Access:Get full text
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Summary:The microgrid with the high proportion of renewable sources has become the trend of the future. However, the negative features, such as renewable energy perturbation, nonlinear counterpart, and so on, are prone to causing the low-power quality of the ac microgrid. To deal with these problems, this article proposes an event-triggered consensus control approach. First, the nonlinear state-space function regarding the ac microgrid is built, which is further transformed into the standard linear multiagent model by using the singular perturbation method. It provides indispensable preprocessing for the direct application of advanced linear control approaches. Then, based on this standard linear multiagent model, the secondary consensus approach with the leader is designed to compensate for the output voltage deviation and achieve accurate power sharing. In order to decrease the communication among various distributed generators, the event-triggered communication method is further proposed. Meanwhile, the Zeno behavior is avoided through the theoretical proof. Finally, simulation results are presented to demonstrate the effectiveness of the proposed approach.
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ISSN:2168-2267
2168-2275
2168-2275
DOI:10.1109/TCYB.2021.3095959