Distributed secondary control of a microgrid with a generalized PI finite-time controller

被引:31
|
作者
Zhang Y. [1 ]
Shotorbani A.M. [1 ,2 ]
Wang L. [1 ]
Mohammadi-Ivatloo B. [2 ]
机构
[1] School of Engineering, The University of British Columbia Okanagan, Kelowna, V1V 1V7, BC
[2] Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz
来源
IEEE Open Access Journal of Power and Energy | 2021年 / 8卷
基金
加拿大自然科学与工程研究理事会;
关键词
Distributed secondary control; finite-time control; generalized PI controller; microgrids;
D O I
10.1109/OAJPE.2021.3056507
中图分类号
学科分类号
摘要
This paper proposes a novel distributed secondary controller for droop-controlled microgrids to regulate the frequency and voltage, and autonomously share the power mismatch. The proposed scheme is entitled generalized proportional-intergal finite-time controller (GPI-FTC). The proposed GPI-FTC is synthesized based on the control Lyapunov function method and modifying the conventional PI controller by adding a consensus term to the integrand dynamic. The proposed distributed GPI-FTC provides plug-n-play capability, scalability, and fast finite-time convergence of the system states. Moreover, a reactive power sharing (Q-sharing) method is designed to improve the sharing pattern of reactive power under exact voltage regulation. Also, a distributed voltage observer is developed for average voltage regulation. Performance of the proposed GPI-FTC is validated through numerical simulations of the detailed model of the microgrid, including small signal analysis, load change, DG outage, Q-sharing, and performance comparison. © 2020 IEEE.
引用
收藏
页码:57 / 67
页数:10
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