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一、水力机械的暂态工况和圆特性水力机械参数的改变对水电站和抽水蓄能电站的过渡过程有很大影响,这些水力机械参数有:决定压力管道水锤的流量;确定甩负荷时机组转速差的转轮力矩;并入电力系统运行时有功功率改变的速动性以及水轮机和水泵工况的机组起动时间。另一些参数也是重要的:转轮的轴向力;流道中不同地点的压力以及转轮桨叶和导叶上的作用力。众所周知,上述的水轮机参数取决于水轮机的工况,即水轮机的运动学的条件,它可写
First, the transient performance of hydraulic machinery and circular characteristics of hydraulic machinery parameters of the hydropower station and pumped storage power station has a great influence on the transition process, the hydraulic machinery parameters are: determine the pressure pipe water hammer flow; determine load rejection Rotor torque of poor turbine speed; incorporated into the power system operation speed change of active power and turbine and pump conditions of the unit start-up time. Other parameters are also important: the axial force of the runner; the pressure at different points in the runner and the forces on the rotor blades and guide vanes. It is well known that the above turbine parameters depend on the operating conditions of the turbine, ie the kinematic conditions of the turbine, which can be written