考虑供热管网储热的综合能源系统多时间尺度优化调度

The heat storage capacity of the heating pipe network of an integrated energy system has a huge regulation potential. In view of this characteristic, a dynamic model of the heating network is established based on the second-order windward implicit equation, and a multi-time-scale scheduling method of the integrated energy system considering the heat storage in pipe network is proposed. Firstly, in the day-ahead scheduling stage, the heat storage characteristics of the pipe network are considered and actively regulated to improve the economy of the system operation; in the upper intra-day scheduling stage, the heat storage characteristics of the pipe network are used to eliminate the heating system time delay effect, and the equipment output is modified on the basis of the day-ahead scheduling; in the lower intra-day scheduling stage, the power system is scheduled on a smaller time scale to meet its short response time characteristics. The analysis shows that the proposed heating system model can effectively calculate the thermal power flow and heat storage of the pipe network, and the proposed multi-time-scale scheduling method can be adopted to effectively suppress the fluctuation of source and load while taking into account the economy and to realize the safe and stable operation of the system.