供热机组的热力与运行特性探讨

针对我国北方地区陆续投产的一批大容量供热机组的情况，从供热机组的类型；热、电负荷调节特性；供热机组容量匹配原则和供热参数优化选择，供热机组调峰特性以及运行经济性调整方式等方面进行了探讨。指出在有条件的区域应采用热电联产集中供热方式；在满足热负荷、运行经济性以及保证热网稳定可靠运行的同时，应优化配置机组容量；新建的供热机组应尽可能采用背压机，减少供热附加产生的发电容量，为电网配置大型高效凝汽式发电机组留出容量空间，同时为电网调峰运行提供有利条件。

Thermal Performance and Operating Characteristics on Heat-supplying Units

High-capacity heat-supplying units are needed to put into production one after another in winter in the north area of our country. The types, heat and power load regulating characteristics, capacity matching principle and heat-supplying parameter selection, power regulating characteristics and economic operation regulation mode of heat-supplying units are discussed. It is pointed out that cogeneration and central heating can be adopted in qualified areas. The unit capacity shall be optimum matched reasonably as well as meet the heat need of customers, realize economical operation and insure safety operation of heat supplying net work. The back-pressure turbine shall be equipped for newly built heat-supplying units as far as possible to decrease generating capacity attached to heat-supplying, to prepare spare capacity for high efficiency steam condensing generating units in power grids and provide advantages for the regulating operation.