Abstract: The lunar surface research station is an exploration cluster，which is composed of several exploration units，including lunar surface command and control center，local / lunar to earth communication system，energy system and various exploration units.The energy system is an important part of the lunar research station.In order to efficiently configure，dispatch and operate the energy system，a distributed energy system concept was proposed.Photovoltaic power is mainly used to provide energy during the day，and nuclear power is used at night.The distributed energy system was studied.The power generation capacity，electricity demand，and payload power-using characteristics of each exploration units were fully analyzed.The architecture of lunar power grid was compared and analyzed，and the scheme of star shaped distributed energy system was selected.The concept of 10kW level long-term power supply was proposed，and the system composition was designed.The key technologies and construction methods of the energy system of lunar research station were analyzed，which can be used for the lunar surface research station in the future.

Key words: lunar research station, distributed energy system, photovoltaic power system, nuclear power system, lunar power grid