Abstract:As a key link in the initial stage of microgrid planning and construction, the optimized power capacity of microgrid should be reasonably configured according to the meteorological data, geographical location and load demand of the construction site, and on the premise of meeting the economy and reliability. In this paper, an stand-alone microgrid capacity allocation optimization method based on typical meteorological years and time-shifting load of oxygen production is proposed for a plateau border camp. Considering various constraints such as installed capacity ratio of renewable energy, reliability of power supply and reliability of oxygen supply, taking the minimum annual average cost in the whole life cycle of microgrid as the objective function, genetic algorithm was used to solve the proposed optimal configuration model, and the configuration results under different schemes were analyzed to verify the feasibility of the proposed method. It provides reference for the planning and construction of stand-alone microgrid.