The Optimize Election of Tailrace Tunnel Based on Pressure in Draft and Small Fluctuation Stability

Author

Wang Chao ; Yang Jiandong

Author_Institution

State Key Lab. of Water Resources & Hydropower Eng. Sci., Wuhan Univ., Wuhan, China

fYear

2012

fDate

27-30 May 2012

Firstpage

1

Lastpage

4

Abstract

The optimization in transients of hydropower station is an issue of multi variables and multi-objectives. Large oscillation transient process and small fluctuation stability have a strong relationship with the character of Tailrace Tunnel. By theory analysis and numerical simulation, this article analyses the effect of the length of free surface flow and pressure flow on pressure in draft and small fluctuation stability in free-full flow tailrace tunnel. The result indicates that pressure flow influence pressure in draft by quantity of flow in surge tank, and effects small fluctuation stability by period of wave and amplitude of vibration of surge tank.

Keywords

hydroelectric power stations; power system stability; Large oscillation transient process; draft stability; fluctuation stability; free surface flow; free-full flow tailrace tunnel; hydropower station; numerical simulation; pressure flow; surge tank; surge tank vibration amplitude; tailrace tunnel; tailrace tunnel optimize election; Equations; Fluctuations; Hydroelectric power generation; Mathematical model; Numerical stability; Stability analysis; Surges;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering and Technology (S-CET), 2012 Spring Congress on

Conference_Location

Xian

Print_ISBN

978-1-4577-1965-3

Type

conf

DOI

10.1109/SCET.2012.6341933

Filename

6341933