考虑平抑未来时刻风电波动的混合储能系统超前模糊控制策略OACSTPCD

[Objectives]Existing hybrid energy storage system control strategy is difficult to maintain the state of charge(SOC)in a reasonable range at the same time,to meet the future moment of wind power fluctuations caused by the hybrid energy storage system ahead of the charging and discharging needs.Therefore,an over-charging and fuzzy control strategy for the hybrid energy storage system that takes into account the smoothing of wind power fluctuations in the future was proposed.[Methods]Firstly,the wind power needing to be smoothed by different types of energy storage devices was decomposed by using the ensemble empirical mode decomposition(EEMD)method.Secondly,the power correction parameter was adjusted according to the SOC of the hybrid energy storage system and the degree of power saturation to correct the output power of the hybrid energy storage system.Thirdly,the wind power prediction algorithm obtained the predicted value of wind power in the forward-looking cycle,and the advance charging and discharging parameters were rectified to correct the output power of the energy storage system according to the fluctuation of the wind power in the forward-looking cycle and the over-advance control theory.Finally,taking the actual data of a wind farm as an example,and validate the validity of the forward-looking fuzzy control strategy was proposed through simulation.[Results]The proposed control strategy can not only reduce the over-limit probability of wind power grid-connected fluctuation,significantly reduce the deviation between the total output power and the target power,but also make the SOC of the hybrid energy storage system within a reasonable range.[Conclusions]This strategy can provide a useful reference for research related to smoothing wind power volatility.