电厂凝汽式汽轮机最佳运行背压的确定方法  

The Determining Method of the Optimum Running Back Pressure for the Condensing Steam Turbine in Power Plant

作　　者：马海龙[1] 王运民[1] 张希富[1] 何健[1] 

机构地区：[1]长沙理工大学能源与动力工程学院,长沙410076

出　　处：《汽轮机技术》2013年第2期118-120,共3页Turbine Technology

基　　金：国家重点基础研究发展计划(973计划)基金资助项目(2009CB219803-03)

摘　　要：利用微增出力的通用计算方法计算汽轮机背压改变时的功率改变量,同时考虑到冷端设备投资、厂用电费用、冷却水使用费用和冷却水的热污染费用,建立了确定最佳运行背压的年净收益模型,给出了电厂凝汽式汽轮机最佳运行背压的确定方法。还以某电厂310MW凝汽式汽轮机组为例,进行汽轮机最佳背压的计算及分析,取得了满意结果。In this paper, we use the universal calculation method of the output correction to get the variation of steam turbine power when back pressure is changed, and also considering the factors that the initial investment of cold end equipment, the charges of auxiliary power, cooling water rate and the charges of cooling water heat pollution, the annual net profit model of determining the optimum running back pressure is established, a determining method of the optimum running back pressure for the condensing steam turbine in power plant is proposed. Then take a 310MW condensing steam turbine unit for example, the calculation and analysis on the optimum running back pressure are performed, and a satisfactory result has been achieved.

关 键 词：电厂 汽轮机 最佳背压 微增出力 

分 类 号：TK264.1[动力工程及工程热物理—动力机械及工程]