风储联合系统调频控制策略优化研究OA

To address the limitations of traditional wind turbine control in the wind-storage combined frequency regulation process,as well as the issue of unreasonable power distribution between the wind turbine and the energy storage device during frequency regulation,based on the working principle of the wind turbine and wind-storage combined system and the conventional frequency regulation control strategy,a structure and frequency response model of the wind-storage system is established.A fuzzy controller for real-time adjustment of the virtual inertia control coefficient is designed,and a coordinated power allocation strategy for wind-storage frequency regulation is formulated.A simulation model is built on the Matlab/Simulink platform to verify the effectiveness of the strategy.The results show that the proposed fuzzy control strategy enables the frequency regulation output of the wind turbine to increase by 0.007 p.u.to 0.010 p.u.compared to the fixed coefficient control,and the frequency change rate is reduced by 16.8%to 17.2%.Under load disturbances,the minimum system frequency increases by 0.04 Hz,and the coordinated frequency regulation effect of wind-storage is better than that of independent wind power frequency regulation.