Abstarct: In this thesis, a power management strategy in a hybrid power system including some Renewable Energy Sources (RESs) connected to distribution network is studied. Photo Voltaic (PV) is the main energy resource and Battery and Fuel Cell (FC) - Electrolyzer are the priory ad secondary energy storage respectively. Also a Hydrogen Tank is used to store the produced Hydrogen (H2) by Electrolyzer. This produced H2 used by FC. These RESs, work together and affect on each other, so different possible states to cover properly different loads in a 24 hours interval regarded. This hybrid system is first analyzed economically in Hybrid Optimization Model for Electric Renewable (HOMER), then modeled in Simulixnk/MATLAB. Then control system evaluated in three different conditions: 1in a 24 hours interval to sypply a load profile, 2electrolyzer.