For photovoltaic output randomness volatility large defects, this paper proposes a common energy storage device as a power distribution control strategy based on the principles of the low-pass filter and an energy density of electrolyzer and supercapacitor, the storage can be effectively utilized electrolyzer and supercapacitor energy complementary features to stabilize the DC bus power fluctuations. While its power allocation initial reference value is corrected to meet the rated output of the electrolyzer and supercapacitor charge state constraints such as to ensure reliable power supply to the grid hybrid system. By PSCAD / EMTDC simulation platform for system modeling, simulation results demonstrate the effectiveness of the control strategy.