喷嘴配汽方式600MW汽轮机组运行优化研究

Optimization Research on Nozzle Governing 600MW Steam Turbine Operation

在分析和研究了大量机组运行优化方式的基础上,提出联合考虑负荷和阀点的运行优化方式,并考虑喷嘴配汽汽轮机组在单阀切换多阀运行时出现的汽流激振问题,提出相应的配汽优化方案。将该综合考虑汽流激振问题的优化方案应用于某600MW汽轮机组,通过试验研究得到该机组的最佳滑压曲线和最优运行方式,并成功地解决了过程中出现的汽流激振问题。与以往运行优化方案相比,该方案更准确、更安全,更适用于实际运行情况。

An operation mode jointly considering the valve point and operation load was proposed in this paper, based on the analysis and study of a large number of unit operation optimization methods. In addition, according to the steam-excited vibration occurred during the optimization process when the nozzle governing steam turbine switch single valve operation mode to multi-valve operation mode, a steam distribution optimization program was proposed to replenish optimization program. This comprehensive program considering the steam-excited vibration problem was applied to a 600MW steam turbine unit, the optimal sliding pressure curve and the optimal operation mode were obtained, and the steam-excited vibration problem was solved successfully by using the steam distribution optimization program. Compared with the previous operation optimization mode ,this mode is more accurate and safer for the actual operation.