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arXiv · 1810.08367

A Two-Layer Distributed Control Method for Islanded Networked Microgrid Systems

Xiaoyu Wu·Yin Xu·Xiangyu Wu·Jinghan He·Josep M. Guerrero·Chen-Ching Liu·Kevin P. Schneider·Dan T. Ton
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Abstract

This paper presents a two-layer, four-level distributed control method for networked microgrid (NMG) systems, taking into account the proprietary nature of microgrid (MG) owners. The proposed control architecture consists of a MG-control layer and a NMG-control layer. In the MG layer, the primary and distrib-uted secondary control realize accurate power sharing among distributed generators (DGs) and the frequency/voltage reference following within each MG. In the NMG layer, the tertiary control enables regulation of the power flowing through the point of common coupling (PCC) of each MG in a decentralized manner. Furthermore, the distributed quaternary control restores system frequency and critical bus voltage to their nominal values and ensures accurate power sharing among MGs. A small-signal dynamic model is developed to evaluate dynamic performance of NMG systems with the proposed control method. Time-domain simulations as well as experiments on NMG test systems are performed to validate the effectiveness of the proposed method.

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Xiaoyu Wu, Yin Xu, Xiangyu Wu, Jinghan He, Josep M. Guerrero, Chen-Ching Liu, Kevin P. Schneider, Dan T. Ton. 2018-10-19. A Two-Layer Distributed Control Method for Islanded Networked Microgrid Systems. https://arxiv.org/abs/1810.08367

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