水电站供水系统小水轮发电机组代替减压阀方案的研究

Small Turbine Unit Replacing Reducing Valve in Water Supply System of Hydroplant

研究了在水电站供水系统中用小水轮机代替减压阀时水轮机选择及工况稳定问题．在高水头大型水电站中采用小水轮机组作为钢管引水降压设施，将高水头的能量转化为电能送入厂用电网，小水轮机出口保持供水系统所需要的稳定水压，将水输入用水设备；并以某水电站为例加以论述．研究表明，水轮机利用减压供水的方案完全可以作为主供水方案，其运行操作比水泵作为主供水简单可靠．

This paper is about how to select the type of a small turbine unit which can replace the reducer and stabilize the operation in water supply systems of hydroplants. In high head and large plants, a small turbine unit can be adopted as pressure relief installation, converting the energy of the water into electric power. At the same time, the stable water pressure can be obtained for the water system at the exit. In this paper, a hydropower plant is taken as an example. This way is suitable for the main water supply system and its operation is simpler than the pump system. This paper is of practical value to many high head plants.