考虑热网动态特性与碳交易的电-热综合能源系统优化调度

Optimal Scheduling of Electric-thermal Integrated Energy System Considering Dynamic Characteristics of Heating Network and Carbon Trading

为充分发挥多能源系统的用能经济性、灵活性和低碳性,提出了考虑热网动态特性与碳交易的电-热综合能源系统优化调度方法。在考虑热网动态特性的基础上,通过热电联产机组、热泵、燃气轮机等能源耦合设备,构建了电-热综合能源系统优化调度模型。首先,针对供热管道和采暖建筑的热动态特性进行精细化建模;其次,以综合能源系统运行成本和碳交易成本最低为目标函数,以能量平衡约束、网络约束为约束条件,提出了综合能源系统日前优化调度方案。算例仿真结果表明,所提优化调度方法能够降低系统运行成本,提高风电消纳率,降低系统的整体碳排放量。

To give full play to the energy consumption economy,flexibility,and low carbon of a multi-energy system,an optimal scheduling method for an electric-thermal integrated energy system(IES)considering the dynamic characte-ristics of heating network and carbon trading is proposed.Based on the consideration of the dynamic characteristics of heating network,an optimal scheduling model of the electric-thermal IES is constructed through the energy coupling equipment such as combined heat and power units,heat pumps,and gas turbines.First,fine modeling is carried out for the thermal dynamic characteristics of heating pipelines and heating buildings.Second,the lowest operation cost and carbon transaction cost of the IES are taken as the objective function,the constraints on energy balance and network are taken,and a day-ahead optimal scheduling scheme for the IES is put forward.The simulation results of a numerical example show that the proposed optimal scheduling method can reduce the system’s operation cost,improve the wind power consumption rate,and reduce the overall carbon emission from the system.