Lunar research station is a comprehensive scientific and experimental facility. In this paper, the mission characteristics and power system requirements of a lunar research station is analyzed. And the current international and domestic research status of power system technology for a lunar research station is surveyed. On this basis, the paper proposes a schematic design for the power system, its demonstration system with a fixed module and two mobile modules, and suggestions for its future development. The demonstration system in the laboratory has preliminarily verified the technical route and key technologies on several typical scenarios on the lunar surface, laying the groundwork for subsequent engineering construction.