含电-热-冷-气负荷的园区综合能源系统经济优化调度研究

综合能源系统是实现各能源系统间有机协调优化的重要途径。剖析电-热-冷-气4个子系统，构建以建设运行总成本为目标的园区综合能源系统经济优化调度模型；其次，利用非线性问题处理办法将所构建的调度模型转化为混合整数规划问题；最后，基于子系统独立运行和耦合调度的2种场景，结合分时电价调用混合整数规划软件对模型进行求解。结果显示，相对于独立运行方式，各子系统耦合调度运行能够灵活组合各能源转换设备，大大降低系统外部购能和系统总成本。

Research on Economic Optimization Scheduling of Park Integrated Energy System with Electricity-heat-cool-gas Load

Integrated energy system is an important way to achieve coordinated optimization between different energy systems. This paper firstly analyzes the four subsystems of electricity-heat-cool-gas, and constructs an economic optimization scheduling model for the park integrated energy system with the total cost as objective. Secondly, the non-linear method is used to transform the constructed scheduling model into a mixed integer programming problem. Finally, based on two scenarios of independent operation and coupled scheduling of subsystems, and combined with the time-of-use electricity price, the mixed integer programming software is used to solve the model. The result shows that, compared to the independent operation mode, the coupling scheduling mode can flexibly combine various energy conversion devices, greatly reducing the system's external energy purchase and the total system costs.