主汽轮机和给水泵汽轮机分设凝汽器的循环水系统优化计算

Calculation Optimization on the Circulating Water System with Main Steam Turbine and Steam Turbine of Feed Water Pump Setting the Condenser Respectively

部分火电机组采用主汽轮机和给水泵汽轮机分设凝汽器的方案,但是现有的循环水系统优化计算程序不能直接适用于该方案。提出了一种优化计算方法,包括单独优化主汽轮机冷端设备、设置虚拟凝汽器、匹配主汽轮机冷却塔和合用冷却塔水温等。计算结果表明:通过该方法可以得到循环水系统较优的冷端配置。

The scheme of the main steam turbine and the steam turbine of feed water pump setting the condenser respectively is used in some large thermal power units,while the existing calculation program of the circulating water system is not suitable for the scheme.A calculation optimization method with following parts was proposed to solve this problem,such as optimizing the cold end equipment of the main steam turbine individually,setting a virtual condenser,matching the water temperatures of the cooling tower of the main steam turbine and the common cooling tower,etc.Calculation results show that an economical configuration of the circulating water system could be obtained with this method.