AUTHOR=Cai Defu , Wang Zuowei , Wang Xiao , Wang Yang , Wang Wenna , Zhou Kunpeng , Yu Dehua 

TITLE=Optimal Dispatch of a Virtual Storage Plant Using Inexact ADMM

JOURNAL=Frontiers in Energy Research

VOLUME=Volume 10 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2022.886845

DOI=10.3389/fenrg.2022.886845

ISSN=2296-598X

ABSTRACT=Virtual Storage Plant (VSP) is identified as an effective approach aggregating distributed storage devices participating in power network supports with similar capability as bulk storage systems. In this paper, we develop a distributed control framework for cost-effective storage coordination in distribution networks, in which energy storage units contribute to a given power reference at the aggregated level, while regulate the local voltages in the presence of renewable generations. The salient feature of the proposed VSP control roots from the successful employment of an inexact alternating direction method of multiplier (ADMM) algorithm, in which the primal updates have analytical solutions in closed form using proximal operators, thus significantly reducing the computation efforts of individual storage agents. The proposed control is favorable for nearly real-time storage dispatch, and its effectiveness is demonstrated using realistic distributed networks in the simulations.