Modeling and Simulation of External Characteristics of Vanadium Redox Flow Battery Energy Storage System

Abstract

Vanadium redox flow battery (VRB) has the advantages of high efficiency, deep charge and discharge, independent design of power and capacity, and has great development potential in the field of large-scale energy storage. Based on the grid connection mechanism of VRB energy storage system, this paper proposes an equivalent model of VRB energy storage system, which can not only accurately simulate the external characteristics of VRB energy storage system, but also meet the needs of power grid simulation and calculation. Finally, the proposed model is built and simulated by Matlab/Simulink. The analysis results show that the model can effectively describe the external characteristics of VRB energy storage system.