【摘要】 对负荷从平均值、不确定性和历史极大值3个方面进行描述;建立可以同时考虑这3个方面的混合整型非线性(MINLP)集成规划模型。针对具体算例,利用灵敏度分析方法对负荷3个方面进行分析,分别考察其对三联供系统各设备最优容量及经济性的影响。研究结果表明:燃气轮机容量主要取决于平均负荷,供热设备容量之和等于热负荷历史极大值,供冷设备容量之和等于冷负荷历史极大值,最大购电量对历史极大值灵敏,废热换热器对负荷不确定性灵敏,系统年总费用节省率主要取决于平均负荷。更多还原

【Abstract】 The energy demands were described from three aspects—average,uncertainty and historical peaks. Mixed-integer nonlinear programming integrated optimization model of combined cooling heating and power (CCHP) system was established,in which all the three aspects of energy demands were considered. Sensitivity analyses about the three aspects were carried out with a hotel in Shanghai. The influence of the three aspects on the optimal facility scheme and annual cost saving rate were investigated. The results show that capacity of gas turbine mainly lies on average energy demands. Capacities’ sum of heating supply facilities is equal to historical heating peak. Capacities’ sum of cooling facilities is equal to historical peak. The maximum purchased electricity is sensitive to historical energy demands peaks. The capacity of exhaust heating exchanger is sensitive to uncertainty of energy demands. The annual cost saving rate mainly lies on average energy demands.更多还原