管道供水水轮发电机组运行工况分析研究
Operation Condition Analysis of Pipeline Water Supply Turbine Generator

对管道供水水轮发电机组的运行工况进行测量实验，然后对测量数据加以分析研究，结果表明，不同的导水叶及调流阀的开度，机组净水头各不相同，出力也不相同，当导水叶及调流阀开度达到某一特定值即临界开度时，管道供水水轮机净水头达到最大值，机组的出力最大，水能资源利用率最高。另外关闭供水管道顶部的通气阀，能进一步增大水轮机的净水头，能大幅度地增加机组出力。不同的管道供水流量及水库水位下，管道供水机组临界开度是不同的，根据测量实验数据，用计算的方法来确定管道供水机组理论临界开度，提高了供水机组进入最佳工况的速度。
The measurement experiment is carried out on the operation condition of the pipeline water supply turbine generator set, and then the measurement data are analyzed and studied. The results show that the net head and output of the unit are different with opening guide vane and regulating valve. When the opening guide vane and regulating valve reach a certain value (i.e. the boundary opening), the net head of the pipeline water supply turbine and the unit output reaches the maximum, and the utilization rate of hydropower resources is the highest. In addition, closing the vent valve at the top of the water supply pipeline can further increase the net head of the turbine and greatly increase the unit output. The critical opening of pipeline water supply unit is different with different pipeline water supply flow and reservoir water level. According to the measured experimental data, the theoretical critical opening of pipeline water supply unit is determined, which improves the speed of water supply unit entering the optimal working condition.