For smoothing wind power output and with aim of improving the operation life of hybrid energy storage system

in this paper the wind storage energy management and control strategy which combines sliding filtering and fuzzy control is proposed on the basis of analyzing the spectral characteristic of wind power.First

the wind power fluctuation rate is leveled through low pass filtering principle so to obtain low frequency grid connected component. Secondly

the sliding filtering algorithm is adopted to decompose the highfrequency components

and the minimum charge and dischargenumber of the hybrid energy storage system is taken as the optimization objective to obtain the power components satisfying the charge-discharge response frequency of the chemical battery and the super capacitor

respectively. Finally

a fuzzy control simulation model is built in Matlab/Simulink to optimize the charged state of two energy storage devices respectively to prevent overcharging and over discharge. It is shown by the result that the control strategy is effectiveandisofpracticalengineeringsignificance.