NDLI: Hierarchical voltage imbalance control for single-/three-phase hybrid multimicrogrid

Content Provider	IET Digital Library
Author	Wang, Can Yang, Ping Chen, Ran Cheng, Shan Tian, Tian Li, Xianghe
Abstract	With the rapid development of distributed generation (DG), microgrids and multimicrogrids (MMGs) appear at the end of distribution networks. For the islanded operation of a single-/three-phase hybrid MMG, a hierarchical coordinated control scheme is proposed in this study that includes primary and secondary levels. A compound control strategy based on quasi-proportional resonant and robust control is proposed for the primary voltage/frequency control to suppress voltage fluctuations caused by sudden changes in load power and DG output power; a coordinated strategy regarding tie-line power at the point of common coupling (PCC) is proposed for the secondary control to simultaneously improve voltage imbalance at the terminal of the master power supply, PCC, and load terminal. The proposed hierarchical coordinated control scheme is compared with conventional proportional–integral control and a control method based on the PCC to verify its performance. Test studies verify the superior robustness and voltage imbalance control performance of the proposed control scheme in coping with a sudden change in power and unbalanced loads.
Starting Page	4233
Ending Page	4241
Page Count	9
ISSN	17518687
Volume Number	13
e-ISSN	17518695
Issue Number	Issue 18, Sep (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/13/18
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2019.0014
Journal	IET Generation, Transmission & Distribution
Publisher Date	2019-08-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Compound Control Strategy Control Method Control of Electric Power System Coordinated Strategy DG Output Power Distributed Power Generation Distribution Network Frequency Control Hierarchical Coordinated Control Scheme Hierarchical Voltage Imbalance Control Load Power Master Power Supply PCC Point of Common Coupling Power Distribution Control Power Generation Control Power System Control Primary Levels Quasiproportional Resonant Robust Control Secondary Control Secondary Levels Single-phase Hybrid Multimicrogrid Stability in Control Theory Three-phase Hybrid Multimicrogrid Tie-line Power Voltage Control Voltage Fluctuation Suppression
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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