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应用有约束的非线性规划方法对采用凝汽式汽轮机供热的区域热电厂的供热参数进行优化研究。针对将原住宅小区的集中供热锅炉房改造为采用凝汽式汽轮机低真空供热的热电厂，以这类热电厂服务期内净现值（ＮＰＶ）为目标函数，采用转轴直接搜索可行性方向法（ＤＳＦＤ法）编制计算机程序，并应用这一程序对实际工程实例进行计算，给出了在供热面积为２０×１０４～３０×１０４ｍ２时，热化系数、热网循环水量、室内散热器面积系数和热网管径增量及热网设计供回水温度的最优值；以及在供热面积一定，单一优化变量变化时，对目标函数的影响关系，可供设计与运行管理参考。
The constrained nonlinear programming method is used to optimize the heating parameters of the regional cogeneration plants that use the condensing steam turbine for heat supply. In order to transform the central heating boiler house in the original residential district into a cogeneration plant using low-vacuum heat from the condensing steam turbine, the net present value (NPV) in the service period of such cogeneration plants is taken as the objective function, and the feasibility method (DSFD method) is used to prepare the computer program. The practical engineering example is calculated with this program. The results show that when the heating area is 20 × 104 ~ 30 × 104m2, the heating coefficient, the heating water circulation, the indoor radiator area Coefficient and heat pipe diameter increment and heat pipe design supply and return water temperature optimal value; and in the heating area, a single optimization variables change, the impact on the objective function, for design and operation management reference.