混流式水轮机暂态性能研究综述

The research overview of hydraulic turbine transient characteristic

随着水轮机组朝着大型化、巨型化方向的发展,机组的稳定性问题越来越受到关注。机组的稳定性不仅对机组本身的安全稳定运行造成影响,而且直接影响到系统的品质特征。该文从压力脉动、空化、导叶关闭规律、导叶和叶片厚度等对暂态性能的影响作了论述。

Hydraulic units＇ stability problem becomes more and more important with the machine developing towards large even giant size. The problem not only affects the machine safety steady motion but also deteriorates the power network＇s quality. The paper summarizes the factors including pressure pulsation, cavitation, guide vane close discipline and the thickness of guide vane and blade, which have effect on the hydraulic turbine＇ s transient characteristic.