Stability Analysis and Design of Islanded Microgrids Integrating Pinning-Based and Consensus-Based Distributed Secondary Control

Jingxi Yang; Chao Charles Liu; Chi K. Tse; Meng Huang

doi:10.1109/TPEL.2024.3402440

Author(s)

Jingxi Yang
Chao Charles Liu
Chi K. Tse
Meng Huang

Related Research Unit(s)

Department of Electrical Engineering

Detail(s)

Original language	English
Pages (from-to)	9490-9504
Journal / Publication	IEEE Transactions on Power Electronics
Volume	39
Issue number	8
Online published	17 May 2024
Publication status	Published - Aug 2024

Link(s)

DOI	DOI https://doi.org/10.1109/TPEL.2024.3402440 Final Published version
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Attachment(s)	Documents 222175290.pdf Post-print, 5.18 MB, PDF Publisher's Copyright Statement COPYRIGHT TERMS OF DEPOSITED POSTPRINT FILE: © 2024 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. Yang, J., Liu, C. C., Tse, C. K., & Huang, M. (2024). Stability Analysis and Design of Islanded Microgrids Integrating Pinning-Based and Consensus-Based Distributed Secondary Control. IEEE Transactions on Power Electronics, 39(8), 9490-9504. https://doi.org/10.1109/TPEL.2024.3402440
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85193521719&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(b2ed1f3d-5d98-4807-8819-b8244746d5bb).html

Abstract

In this paper, the impact of pinning-based and consensus-based distributed secondary control on the stability of islanded microgrids is studied. A nonlinear model of the islanded microgrid is first established, incorporating the voltage-loop dynamics and communication delay. Using this model, the influence of the secondary control on the microgrid's dynamical behavior is explored, and in particular, the improved robustness and stability contributed by the voltage-increment-based secondary control is highlighted. Besides, the effects of the topology of communication networks and the selection of driver controllers on the system stability are revealed, and such effects are quantitatively measured by the algebraic connectivity and the conditional number. Moreover, small-signal models and the corresponding loop gains are derived for expediting the selection of suitable secondary control parameters. Furthermore, a design procedure of the distributed secondary control system is demonstrated. Finally, analytical findings are verified by cycle-by-cycle full-circuit simulations and laboratory experiments. © 2024 IEEE.