This research presents a hybrid grid system that contains a photovoltaic panel, wind turbine, electrolyzer, supercapacitor, power convertor, and a three-phase variation load. In order to maximize the strengths of each energy storage technology, enhance the technical and economic benefits, in the hybrid energy storage unit, how to combine and coordinated control has become one of the research hotspots at an instant. For the fundamental problem of the hybrid energy storage system, academics have different technical features based on the energy storage unit, uses the changing average filter such as low -pass & high pass filtering classification to internal energy distribution of the hybrid energy storage system, play the advantages of energy storage medium respectively, Based on the system energy storage unit within their respective overcharge discharge and the limit of power, control, direct adjustment or indirect methods, such as to separate the energy storage unit output power adjustment, protect the hybrid energy storage components of the system.