摘要
运用有调压室的水轮机调节系统数学模型，引入无量纲参数，详细分析了调压室断面积对调节系统稳定域的影响．研究表明，水电站有压输水系统总的水流惯性对调节系统的稳定性是不利的．其校正由调速器和调压室共同完成．调压室断面积对压力管道的水流惯性不起校正作用，须由调速器独自承担．而调速器的缓冲作用却能帮助调压室校正压力隧洞的水流惯性，从而减小调压室稳定断面积．
The effect of sectional area of surge tank on stability of turbine regulation system has been analyzed by using the mathematic model of the non dimensional parameters of the whole system.The investigation shows that the total fluid inertia gives a negative effect.The surge tank can not reduce the negative effection of the fluid inertia in the penstock.It can be stabilized by the governor only.While the fluid inertia in the tunnel can be stabilized by the surge tank individually or together with the governor.In the case that the fluid inertia in the penstock is rather small,it is possible to reduce the sectional area of the surge tank even smaller than the Thoma area.
出处
《武汉水利电力大学学报》
CSCD
1997年第4期13-17,共5页
Engineering Journal of Wuhan University
基金
电力部青年科技促进费
关键词
调压室
水流惯性
调速器
调节系统稳定域
水电站
surge tank
fluid inertia
governor
stability of turbine regulation system
