基于有向图的天然气冷热电联供系统优化模型
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摘要
冷热电联供(Combined Cooling, Heating and Power,CCHP)系统的经济性、节能性与系统配置和运行策略密切相关。文章在分析CCHP系统结构的基础上,根据能量流动方向建立了CCHP系统的有向图模型,并在有向图模型的基础上提出了以运行成本最小化为目标函数的最优化模型,通过适当的假设将最优化模型线性化,可以通过线性规划进行求解,最后通过算例测试了模型的合理性和有效性。
The economical performance and energy consumption of combined cooling, heating and power(CCHP) system are closely related to the system configuration and operating strategy. A directed graph model of CCHP system is established according to the structure and the direction of energy flow of CCHP system. On the basis of directed graph, an optimization model that can minimize the operating costs of CCHP system is established, the optimization model can be solved by linear programming when the model is linearized by some reasonable assumptions. The results indicate the validity and effectiveness of the optimization model.
The economical performance and energy consumption of combined cooling, heating and power(CCHP) system are closely related to the system configuration and operating strategy. A directed graph model of CCHP system is established according to the structure and the direction of energy flow of CCHP system. On the basis of directed graph, an optimization model that can minimize the operating costs of CCHP system is established, the optimization model can be solved by linear programming when the model is linearized by some reasonable assumptions. The results indicate the validity and effectiveness of the optimization model.
引文
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[3]魏大钧,孙波,赵峰,等.小型生物质沼气冷热电联供系统多目标优化设计与运行分析[J].电力系统自动化,2015,39(12):7-12.
[4]王成山,洪博文,郭力,等.冷热电联供微网优化调度通用建模方法[J].中国电机工程学报,2013,33(31):26-33.
[5]WANG J J,JING Y Y,ZHANG C F.Optimization of capacity and operation for CCHP system by genetic algorithm[J].Applied Energy,2010,87(4):1325-1335.
[6]SANAYE S,ZIABASHARHAGH M,GHAZINEJADM.Optimal design of gas turbine CHP plant with preheater and HRSG[J].International Journal of Energy Research,2010,33(8):766-777.
[7]WEBER C,MARéCHAL F,FAVRAT D,et al.Optimization of an SOFC-based decentralized polygeneration system for providing energy services in an office-building in Tōkyō[J].Applied Thermal Engineering,2006,26(13):1409-1419.
[8]WANG J J,JING Y Y,ZHANG C F,et al.Integrated evaluation of distributed triple-generation systems using improved grey incidence approach[J].Energy,2008,33(9):1427-1437.