Presents two combined operation modes of the basic heat source and the distributed heat source, establishes the economic models of the two heat source combined operation taking minimum annual operating cost and minimum annual cost in life cycle as the objects respectively, and analyses the application of the combined operation to a central heat supply system in Harbin. The results show that the heating system of the basic heat source combined with the distributed heat source is more economical than the single heat source heating system in annual operating cost, and considering the dynamic economic effects, the savings of annual operating cost is more considerable in life cycle. Taking minimum annual operating cost and minimum annual cost in life cycle as the objects, concludes that the optimum capacity coefficients of the basic heat source are 0.70 to 0.75 and 0.60 to 0.65 respectively.%介绍了基础热源与分布热源联合运行的两种模式,分别以年运行费用和寿命周期内费用年值最小为目标建立了联合运行的经济模型.以哈尔滨某集中供热系统为例,进行了应用分析.结果显示,“基础热源十分布热源”联合供热系统比单热源供热系统更节省年运行费用,若从动态经济性考虑,节省的寿命周期内费用年值更为可观.分别以年运行费用最小和 寿命周期内费用年值最小为目标优化得出的最佳基础热源容量系数为0.70～0.75和0.60～0.65.
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