小浪底水电站水轮发电机组原型效率试验

Prototype Efficiency Test on Hydro-Generating Unit of Xiaolangdi Hydropower Station

介绍了小浪底水电站1号机组现场效率试验的方案、试验参数测量方法,通过压力—时间法对蜗壳压差流量系数进行了率定,得到了水轮机绝对流量,实现了现场绝对效率的测量。实测得到的效率曲线和模型换算得到的效率曲线一致性较好,说明实测效率曲线的分布趋势真实反映了水轮机的能量特性。

The paper introduced the program of field efficiency test and the measuring methods of test parameters for Xiaolangdi Hydropower Unit 1 The flow coefficient of winter Kennedy method was calibrated by the Gibson method, and so the measurement of the absolute flow rate of hydraulic turbine and the absolute efficiency were obtained. Compared to the efficiency curves obtained from model efficiency, it can be seen clearly that they agree well at all of the working conditions, which shows that the measured efficiency curve can represent the energy characteristics of hydraulic turbine, and it can lay the foundation for economic operation of the hydropower station.