李家峡水电站双排布置的水轮发电机组的运行分析

Operation analysis of the two-row generating units of Lijiaxia Hydropower Station

通过机组双排布置的模型试验、现场运行的稳定性试验以及现场实际运行监测的结果 ,对李家峡水电站双排布置的水轮发电机组的运行情况进行了总结。双排机组联合运行时 ,不同的负荷对机组间的性能影响是很大的 ,改善了上游排机组尾水管的水力特性 ,但对下游排机组尾水管的压力脉动影响较大。负荷的调配应遵循机组双排布置的特性 。

On the basis of the results from the model tests on the two row arrangement of generating unit, the stability tests on the field operation and the actual operation observations, this paper sums up the operation of the two row hydro generating units of the Lijiaxia Hydropower Station. When the combined operation of the two row generating units is made, the effect of different loads on the performances between generating units is big. When the hydraulic characteristics of the draft tube of upstream row generating units are improved, the effect on the pressure pulse of the draft tube of downstream row generating units is big. Therefore the features of two row arrangement of generating units should be obeyed and rational load allocation between generating units should be conducted.