文章基本信息

标题：Distributed Energy Dispatch of Electrical Energy Storage Systems Using Consensus Control Approach
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作者：Wenjing Xie ; Xiaohua Xia
期刊名称：IFAC PapersOnLine
印刷版ISSN：2405-8963
出版年度：2018
卷号：51
期号：13
页码：229-234
DOI：10.1016/j.ifacol.2018.07.283
语种：English
出版社：Elsevier
摘要：AbstractEnergy dispatch task of electrical energy storage systems (EESSs) contains the state of charge (SoC) balance and the supply-demand balance, where the former ensures the maximum power capacity of the group of EESSs, and the latter maintains the load operation and reduces energy lost. A unified switching model is established for both charging and discharging processes of EESSs. EESSs are assumed to share a common communication network. Dependent on the communication between EESSs, three distributed energy dispatch algorithms are proposed based on consensus control approach, graph theory and Lyapunov method. Without considering constraints, the first algorithm is designed to determine the charging/discharging power reference of every EESS as the sum of a nominal power value and an SoC-based correction term, where the nominal term and the correction term respectively decrease the supply-demand and the SoC imbalances. By applying a dynamic saturation function to the first algorithm, a second one is constructed satisfying the charging/discharging mode switching constraint and the power limit constraint. On the basis of the second algorithm, a third one is obtained by additionally taking into account the SoC limit. Lyapunov stability analysis shows that the third algorithm not only asymptotically realizes the energy dispatch objective but also satisfies the power and SoC constraints, provided that the communication graph is undirected and connected. Effectiveness of the third algorithm is demonstrated by simulation results.
关键词：KeywordsEnergy storage systemsenergy dispatchdistributed controlconsensus control