凝汽式汽轮机相对内效率在线测定新方法

New method for on-line determination of relative internal efficiency of condensing turbine

在线监测凝汽式汽轮机相对内效率时 ,难以得到准确的排汽焓 ,使在线确定汽轮机相对内效率比较麻烦。提出了一种基于发电厂现有监测参数基础上的在线监测凝汽式汽轮机相对内效率的新方法 ,该方法避开了确定排汽焓的困难 ,还可计入各漏汽、厂用汽的影响 ,使计算精度满足工程应用需要 ,在佳木斯电厂。

Since the accurate exhaust steam enthalpy is difficult to determine when the relative internal efficiency of the condensing turbine is monitored in an on-line manner, a new method for determining the relative internal efficiency for condensing turbine in an on-line manner based on the existing monitoring parameters of the power plant was put forward. With the new method, the difficulty in determining the exhaust steam enthalpy is avoided and the effects of the steam leakage and house service steam are considered, which makes the accuracy of the computation meet the requirements of engineering application. The method was applied in Jiamusi Power Plant and Huaneng Dalian Power Plant and has presented good effect.