Title :
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
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;
Conference_Titel :
Engineering and Technology (S-CET), 2012 Spring Congress on
Conference_Location :
Xian
Print_ISBN :
978-1-4577-1965-3
DOI :
10.1109/SCET.2012.6341933
