Surge Wave Propagation in a Common Tailrace Channel for Two Large Pumped-Storage Plants

被引：7

作者：

Terrier, Stephane ^{[1
]}

Bieri, Martin ^{[1
,2
]}

De Cesare, Giovanni ^{[1
]}

Schleiss, Anton J. ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Lab Hydraul Construct, CH-1015 Lausanne, Switzerland

[2] Poyry Switzerland, CH-8037 Zurich, Switzerland

来源：

JOURNAL OF HYDRAULIC ENGINEERING | 2014年 / 140卷 / 02期

关键词：

Surge wave; Pumped-storage plant; Tailrace channel; Physical modeling;

D O I：

10.1061/(ASCE)HY.1943-7900.0000809

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Sudden starting and stopping of turbines and pumps lead to highly unsteady flow in tailrace channels of hydropower plants (HPP). Submergence of Pelton turbines and air entrainment in pumps due to surge waves must be avoided by technical measures. The existing 240MW Veytaux pumped-storage plant in Switzerland will be enlarged by a new powerhouse adding another 240MW, using the same tailrace channel and intake. Therefore, surge waves, induced by the two combined HPPs' operation, were investigated using a physical model. For its validation, the flow behavior of the present scheme was tested and compared to prototype measurements. The enhanced scheme was investigated to analyze critical scenarios, to optimize the plant operation rules, and to define its limits. The effect of the layout on wave reflection in pump mode is highlighted and compared to theoretical approaches.

引用

页码：218 / 225

页数：8

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