Coordinated optimization control strategy for hybrid energy storage system based on real-time online analysis of power spectrum

To prevent the distribution network from being effected by the output power fluctuation of photovoltaic, wind and other renewable energy generation, this paper presents a coordinated optimization control strategy for hybrid energy storage system based on real-time online analysis of power spectrum. Compared with the smoothing method used nowadays, it solves the existing problem that the smoothing objective could not be satisfied in an extreme power fluctuate scenario; The developed device has been applied in a number of engineering projects and both the simulation and practical applications prove the effectiveness of the strategy to improve the power quality and realize a smooth access for renewable energy.