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Overview of Microgrid Read chapter Read first chapter

2022 | OriginalPaper | Chapter

13. Unified Grid-Connected and Islanded Operation

Authors : Yao Sun, Xiaochao Hou, Jinghang Lu, Zhangjie Liu, Mei Su, Joseph M. Guerrero

Published in: Series-Parallel Converter-Based Microgrids

Publisher: Springer International Publishing

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Abstract

In order to ensure the uninterrupted power supply, it is necessary for microgrid to operate in both grid-connected mode and islanded mode. To address this concern, this chapter introduces a unified decentralized control strategy for both grid-connected and islanded operation of the series-type microgrid (CMG). It can realize the smooth mode switching without the need of changing controllers. In terms of the scheme, the system always holds a unique equilibrium point regardless of the grid-connected or islanded operation. Since the CMG is performed in decentralized manner without any communication, it is a reliable and cost-effective solution. Moreover, the self-synchronization of each DG is obtained under both the resistance-inductance (RL) and resistance-capacitance (RC) loads. The small-signal stability is proved and the design of control parameters is given. Finally, the feasibility of the method is verified by simulation and OPAL-RT based real-time simulation results.

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previous chapter A Master–Slave Control in Grid-Connected Applications
next chapter Distributed Control Strategy for Hybrid Series–Parallel Microgrid
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Metadata
Title
Unified Grid-Connected and Islanded Operation
Authors
Yao Sun
Xiaochao Hou
Jinghang Lu
Zhangjie Liu
Mei Su
Joseph M. Guerrero
Copyright Year
2022
Book
Series-Parallel Converter-Based Microgrids

Print ISBN: 978-3-030-91510-0

Electronic ISBN: 978-3-030-91511-7

Copyright Year: 2022

DOI
https://doi.org/10.1007/978-3-030-91511-7_13