NDLI: Robustness-oriented distributed cooperative control for ac microgrids under complex environments

Content Provider	IET Digital Library
Author	Lai, Jingang Lu, Xiaoqing Dong, Zhengcheng Tang, Ruo li Li, Xin
Abstract	In this study, the power sharing problem of ac microgrids with massive penetration of photovoltaic generators (PVG) is addressed. A robust distributed cooperative control strategy is proposed to control multiple PVGs in ac microgrids under a complex environment (e.g. subject to transmission time delays and noise disturbances). The existing distributed control strategies have been commonly designed assuming ideal communication among PVGs. However, due to inherent communication delays and environmental noises, the real-life practical channels are affected by time delay and additive noise leading each PVG to receive measurements of the states of its neighbours. Thus, the proposed distributed cooperative control strategy will achieve the accurate power sharing property among PVGs through a sparse communication network subject to time delays and noise disturbances. The theoretical concepts and necessary conditions for stability and robust performance of the proposed distributed cooperative control strategy are outlined by the Lyapunov functional method and stochastic differential equation theory. Furthermore, the proposed control strategy is fully implemented and thus satisfies the plug-and-play feature of the future smart grid. Simulation results on an islanded microgrid test system are provided to reveal the effectiveness of the proposed control method to provide accurate proportional power sharing in the MATLAB/SimPowerSystems Toolbox.
Starting Page	1473
Ending Page	1482
Page Count	10
ISSN	17518644
Volume Number	13
e-ISSN	17518652
Issue Number	Issue 10, Jul (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-cta/13/10
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-cta.2018.5698
Journal	IET Control Theory & Applications
Publisher Date	2019-03-29
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	AC Microgrid Accurate Power Sharing Property Accurate Proportional Power Sharing Additive Noise Complex Environment Control Method Control Multiple PVGs Control of Electric Power System Control Strategy Differential Equation (numerical Analysis) Distributed Control Distributed Power Generation Distribution Network Environmental Noises Existing Distributed Control Strategy Inherent Communication Delay Islanded Microgrid Test System Lyapunov Method Multivariable Control System Noise Disturbances Photovoltaic Power System Power Distribution Fault Power Generation Control Power Sharing Problem PVG Robust Control Robustness-oriented Smart Power Grid Solar Power Stations Sparse Communication Network Subject Stability in Control Theory Time Delay Transmission Time Delay Voltage Control
Content Type	Text
Resource Type	Article
Subject	Control and Optimization Control and Systems Engineering Human-Computer Interaction Electrical and Electronic Engineering Computer Science Applications

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