汽轮机滑压运行曲线优化设计的计算方法

Calculation Method for Optimum Design of Sliding Pressure Operation Curve of Steam Turbine

针对大型火电机组汽轮机滑压运行的优化问题,基于汽轮发电机组热力系统的分析计算方法,介绍了一种获得汽轮机最优滑压运行曲线的设计计算方法。采用此方法成功优化了某600 MW亚临界汽轮机的滑压运行曲线,提高了机组的运行经济性,并提出了分段及切换滑压的概念。

For the optimization of sliding pressure operation of steam turbine in large coal-fired generating u- nits, the paper introduces a design calculation method to obtain optimum sliding pressure operation curve of steam turbine on the basis of analysis and calculation method for thermodynamic system of steam turbine gen- erating units. By use of the method, sliding operation curve of a 600 MW subcritical steam turbine is suc- cessfully optimized to improve operation economy of the units. The paper also presents concepts of seetional- ization and sliding pressure switching.