Abstract: A multi-time-scale energy optimal scheduling model for microgrid considering generalized reserve capacity is proposed. The coordinated optimal scheduling between the day-ahead scheduling plan and the realtime scheduling of the microgrid is realized. The day-ahead scheduling part of the model takes the economic operation of microgrid as the goal,considers the randomness of wind power,and establishes a scheduling model considering the characteristics of generalized reserve resources,which effectively improves the adaptability of microgrid to the randomness of wind power output. In the real-time dispatching stage,the minimum cost including the cost of the day-ahead dispatching plan is taken as the optimization objective,and the reserve capacity purchased by the day-ahead plan is used to slow down the limit constraints of each unit to realize the internal absorption of wind power fluctuation and ensure the economic operation of the microgrid. By optimizing and coordinating the operation of various equipment,the multi-time-scale dispatching model realizes the economic operation of the microgrid and the joint optimization of the reserve resources of the demand side,the large power grid side and the generation side. The effectiveness of the proposed model is verified by a numerical example.