变顶高尾水洞大型水电站运行稳定性研究

With the exploration of our country's water power resource, many huge or large hrdropower stations which are being designed or constructed can use the Inclined Ceiling tailrace. This new form with good economic and social benefit would replace the large-area surge tank. .The item relied on the experiment equipment of the Three Gorges Underground Station and Xiangjiaba Underground Station. Using the method of combination of theoretical analyse, numeric calculation and model experiment, the characteristic of Inclined Ceiling tailrace in large waterpower stations and the influence of Inclined Ceiling tailrace on the running stability of station units have been researched. During the study of the size, the form of Inclined Ceiling tailrace, the movement of the surface of open-pressured flow and the influence of the movement on the running of waterpower stations, the design theory and calculate method of Inclined Ceiling tailrace in large hydropower station have been built. Then the reference to popularize Inclined ceiling tailrace is provided.

本项目是从水力学、控制理论和模型实验等基本理论出发，研究大型水电站变顶高尾水洞和水轮机调节系统的工作特性，以及两者的相互影响，从而解决变顶高尾水洞大型水电站机组运行的稳定性。突破变顶高尾水洞这一关键技术，取代尾水调压室。该技术的推广应用，将促进我国水电建设的发展，提高水电站的设计水平，具有显著的经济和社会效率。.