水力发电学报2026，Vol.45Issue(9)：39-49,11.DOI:10.11660/slfdxb.20260904
调压室参数对抽蓄电站引水上平段最小压力的影响
Effect of surge chamber's parameters on minimum pressure along upper flat pipe segment in pumped-storage power stations
摘要
Abstract
The minimum pressure head along the upper flat pipe section is recognized as a critical control parameter for ensuring hydraulic safety and operational stability in pumped-storage power stations.A mathematical model for transient flow analysis in the water conveyance system is developed,and a Sobol-based global sensitivity analysis method is incorporated.The influences of upstream surge chamber installation,along with three key design parameters—the inflow-outflow coefficient,throttled orifice diameter,and surge chamber diameter—on the minimum pressure at two selected control cross sections are systematically investigated.The minimum internal pressure at these sections is found to be effectively improved by the provision of an upstream surge chamber,by the optimization of the inflow-outflow coefficient,and by the increase of both the throttled orifice diameter and the surge chamber diameter.Among all influencing factors,the flow variation rate is identified as the dominant variable affecting the minimum pressure at the two sections.By means of the Sobol method,not only the individual effects of each parameter but also their pairwise interaction effects on the minimum pressure are quantitatively evaluated.The sensitivity indices are calculated,and the throttled orifice diameter is shown to exert the most significant influence,followed by the surge chamber diameter and the inflow-outflow coefficient,in descending order.Technical support for the evaluation and optimization of pipeline layout parameters in similar hydraulic systems is provided by the obtained results.关键词
抽水蓄能电站/水力过渡过程/引水上平段/引水调压室Key words
pumped-storage power station/hydraulic transition/minimum pressure at the upper flat pipe segment/upstream surge chamber分类
建筑与水利引用本文复制引用
周建旭,余雯,郑源,张青..调压室参数对抽蓄电站引水上平段最小压力的影响[J].水力发电学报,2026,45(9):39-49,11.基金项目
国家自然科学基金重点项目(52339006) （52339006）
