A Novel Distributed Secondary Coordination Control Approach for Islanded Microgrids

Lu, X, Yu, X, Lai, J, Wang, Y and Guerrero, J 2018, 'A Novel Distributed Secondary Coordination Control Approach for Islanded Microgrids', IEEE Transactions on Smart Grid, vol. 9, no. 4, pp. 2726-2740.


Document type: Journal Article
Collection: Journal Articles

Title A Novel Distributed Secondary Coordination Control Approach for Islanded Microgrids
Author(s) Lu, X
Yu, X
Lai, J
Wang, Y
Guerrero, J
Year 2018
Journal name IEEE Transactions on Smart Grid
Volume number 9
Issue number 4
Start page 2726
End page 2740
Total pages 15
Publisher IEEE
Abstract This paper develops a new distributed secondary cooperative control scheme to coordinate distributed generators (DGs) in islanded microgrids (MGs). A finite time frequency regulation strategy containing a consensus-based distributed active power regulator is presented, which can not only guarantee the active power sharing but also enable all DGs' frequencies to converge to the reference value within a finite time. This enables the frequency and voltage control designs to be separated. Then an observer-based distributed voltage regulator involving certain reactive power sharing constraints is proposed, which allows different set points for different DGs and, thus, accounts for the line impedance effects. The steady-state performance analysis shows that the voltage regulator can accurately address the issue of global voltage regulation and accurate reactive power sharing. Moreover, all the distributed controllers are equipped with bounded control inputs to suppress the transient overshoot, and they are implemented through sparse communication networks. The effectiveness of the control in case of load variation, plug-and-play capability, communication topology change, link failure, time delays, and data drop-out are verified by the simulation of an islanded MG in MATLAB/SimPowerSystems.
Subject Control Systems, Robotics and Automation
Power and Energy Systems Engineering (excl. Renewable Power)
Industrial Electronics
Keyword(s) Distributed control
finite time regulator
islanded microgrids
secondary control
DOI - identifier 10.1109/TSG.2016.2618120
Copyright notice © 2016 IEEE
ISSN 1949-3053
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