Abstract

【Aiming at the application of Vanadium Redox-Flow Battery Energy Storage System (VRBESS) on wind power, this paper studied on the control strategy of BESS under the different time scale. Firstly, the paper introduced the operation mode of BESS under different working condition and the judgment principle for operation mode switch, which based on the comprehensive characteristics of wind power prediction, SOC of BESS and control objective of wind power-BESS. According to the technical requirements, the control strategy of BESS was presented, namely smooth control based on ultra-short-term wind power prediction. The smooth control works on smooth the rapid fluctuation of power output from wind farm with time scale 0-15min, it is very helpful to improve the power quality of wind power and reduce the influence from wind power on the frequency regulation capability of power system. Lastly, by means of simulation, the control strategy was applied to a study wind farm to verify the effectiveness.】

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