建筑冷负荷对综合能源系统运行优化的影响

为解决现有综合能源系统运行优化研究对建筑冷负荷的影响考虑不充分（多以“典型日负荷”或“预测负荷”代替空调期冷负荷）的问题，首先应用EnergyPlus软件对北京某园区进行建模和负荷分析，再以经济性为优化目标，基于园区的电、冷负荷供需平衡和综合能源系统设备的典型模型建立运行约束模型，在空调期对多能源耦合的综合能源系统建立运行优化模型。对优化模型使用Yalmip建模和编程，使用Cplex求解器求解问题，得到不同负荷条件下的综合能源系统空调期的运行优化方案，并分析其统一性和差异性。结果表明：本文构建的以经济性为目标的优化模型，可以使多能耦合的综合能源系统在目标下运行更加优化；不同建筑冷负荷条件下运行优化方案具有较大差异性；不同负荷条件下运行优化方案具有一定规律性。可见综合能源系统的运行优化研究应该全面考虑冷负荷的影响，本文提出的规律性运行优化方案为综合能源系统提升运行经济性提供了依据。

Effects of Building Cooling Load on Optimal Operation of Integrated Energy System

In order to solve the problem of insufficient consideration,the influence of existing integrated energy system operation optimization research on building cooling load (mostly replacing air-conditioning cooling load with typical daily load or forecasting load), firstly, a park in Beijing is modeled and loaded by EnergyPlus software, and then optimized with economy as the objective, based on typical equipment model and Park Power supply and load. , Constraint model is established for the balance of supply and demand of cooling load, and operation optimization model for air-conditioning period of multi-energy coupling integrated energy system is established. Using Yalmip modeling and programming and Cplex solution, the operation optimization scheme of integrated energy system during air conditioning period under different load conditions is obtained, and its uniformity and difference are analyzed. The results show that the optimization model constructed in this paper can optimize the operation of multi-energy coupling integrated energy system. Operational optimization schemes under different building cooling load conditions are quite different. Operating optimization schemes under different load conditions have certain regularity. It is concluded that the influence of cold load should be considered in the study of operation optimization of integrated energy system. The regular operation optimization scheme proposed in this paper provides a basis for improving operation economy of integrated energy system.