考虑热网传输延时及储热的电-热综合能源系统日前优化调度策略

综合考虑热网传输延时及储热的优化调度,可显著提高电-热综合能源系统的灵活性,在实现系统经济运行的同时,进一步提高系统的新能源消纳能力。对此,文中提出考虑热网传输延时及储热的电-热综合能源系统日前优化调度策略。首先,建立描述热网的传输延时和储热的供热系统模型;接着结合具体的能源设备,将热网作为调度资源参与到日前优化调度中,提出一种热网传输延时及储热的日前优化调度模型,实现对热网虚拟储能的调度利用。最后对不同场景下含风电的电-热综合能源进行算例分析,验证了文中所提方法的有效性。仿真结果表明,该方法可利用热网传输延时和储热进一步降低系统的运行成本,提高风电的消纳率。

Day-ahead optimal scheduling strategy of electricity-heat integrated energy system considering transmission delay and heat storage of heating network

Optimized scheduling of heating network transmission delay and heat storage can improve the flexibility of the electricity-heat integrated energy system, while achieving economic operation of the system, further improving the system"s new energy consumption. In this paper, day-ahead optimal scheduling strategy of electric-heat integrated energy system is proposed considering transmission delay and heat storage of heating network. Firstly, a heating system model describing the transmission delay and heat storage of the heating network is established. Then combined with the energy equipment model, the heating network is used as a scheduling resource to participate in the day-ahead optimal scheduling, and a day-ahead scheduling model considering the heating system is proposed to realize the scheduling and utilization of the virtual energy storage in the heating network. Finally, a typical example is given to verify the effectiveness of the proposed method. The calculation results show that the method can further reduce the operating cost of the system and improve the absorption rate of wind power by using the transmission delay and heat storage of heating network..