抽水蓄能电站同发同抽等流量运行岔管水力特性

为研究抽水蓄能电站不同机组间同发同抽运行时的岔管水力特性，基于某抽水蓄能电站岔管的体型及设计参数，采用水动力模型对抽水蓄能电站同一水力单元内同发同抽等流量运行时的岔管段水力特性进行数值模拟研究。结果表明:研究范围内，同发同抽运行时岔管段水流会发生回流及低压区，最大的水头损失系数为0.5；与常规的运行工况相比，同一水力单元中进行同发同抽等流量运行时岔管内的水流流态会发生恶化、水头损失增大的现象，但从水力学的角度没有产生非常不良的流态。

Hydraulic characteristics of bifurcated pipe running at flow rates of same discharge and same pumping in pumped storage power station

In order to study the hydraulic characteristics of bifurcated pipes in pumped storage power station when different units are pumped at the same time, combined with the shape and design parameters of bifurcated pipes in a pumped storage power station, the hydraulic characteristics of bifurcated pipes in the same unit with the same pumping and discharge were numerically simulated by using the hydrodynamic model. The results show that, within the scope of the study, the return flow and low pressure zone will occur in the bifurcated section of the same pumping operation, and the maximum head loss coefficient is 0. 5. Meanwhile, the flow pattern in the bifurcated pipe will deteriorate and the head loss will increase when the same hydraulic unit operates with the same pumping flow, but it is feasible from the hydraulic point of view.