有调压井冲击式水电站过渡过程建模与仿真研究

Transient Numerical Simulation of Impulse Hydropower Station with Surge Shaft

摘要: 冲击式水电站引水系统长，水体惯性较大，对系统压力和电站引水管道水锤压力影响较大，一般通过装设调压井来减小系统压力波动。本文从对象的工作机理出发，建立了某有调压井冲击式水电站的过渡过程数学模型，并进行仿真实验，通过计算各种过渡过程下系统压力和调压井水位的变化，证明装设调压井能够减小系统在调保时的压力波动，能够保证水电站的正常运行。

Abstract: Water diversion system of hydropower station with impulse turbine is longer, and has a large body of water inertia, which has a greater impact on the system pressure and the diversion pipeline water hammer pressure, so the power station can reduce the system pressure fluctuations by install the surge shaft. From the working mechanism of the object, this paper established a mathematical model of the transition process of impulse hydropower station with surge shaft and make the simulation experiments. Through the transient numerical simulation and calculate the transition process and surge shaft water level of various operating conditions. The results showed that the surge shaft can reduce pressure fluctuations in the system, and ensure the normal operation of the hydropower stations.