Power supply system

The utility model provides a power supply system, which is applied to the technical field of nuclear power and comprises an energy storage module, a power generation module, a first power supply module and a first switch, the first output end of the power generation module is connected with the input end of the first power supply module. The second output end of the power generation module is connected with the input end of the energy storage module through the first switch. Wherein under the condition that the first power supply module needs full load supply, the first switch is in an off state so as to provide all electric quantity of the power generation module for the first power supply module, and under the condition that the first power supply module needs preset load supply, the first switch is in an on state so as to store redundant electric quantity of the power generation module in the energy storage module; the load value of the preset load is lower than a preset value. According to the power suppl