Research on Primary Frequency Regulation of Wind Power Integrated with Hybrid Energy Storage Based on Fuzzy Logic Control

With growing wind-generated system in grids, frequency regulation pressure increases. Therefore, a control strategy aimed at primary frequency regulation is proposed in this paper, hybrid energy storage and wind power are coordinated in this strategy. Battery storage and flywheel storage together constitute hybrid energy storage. The filtering algorithm allocates frequency regulation power of two types energy storage. Fuzzy logic control determines the time constant of the filter function, taking into account the power and SOC of the battery and flywheel. Finally, a model of the wind-generated system and hybrid energy storage system is constructed and simulated. It is proved by the results that, according to the above strategy, primary frequency regulation can be achieved, resulting in higher frequency stability of the grid.