汽轮机相对内效率的计算机在线监测及其数值特性分析

On-Line Monitoring of Steam Turbine Efficiency and Analysis on Its Numerical Properties

对汽轮机性能进行在线监测已成为开展节能工作的一个重要发展方向。本文结合国产300MW机组性能监测系统的开发应用,对汽轮机各汽缸相对内效率的在线计算方法进行了分析,其中较详细地讨论了低压缸内效率的在线计算过程。同时,本文还进一步研究了在实际应用中所遇到的一些具体问题,如迭代计算初值的选取、计算机求解的稳定性以及如何避免方程组的病态现象等。

The on-Hne measurement of steam turbine performence has become a new developing trend to save energy. This paper discussed the on-line calculation method for steam turbine efficiency, especially for LP turbine section. In this paper some actual encontered prolems are alao studied, such as the stability of numerical methods and merbld state of equations, etc.