含明渠尾水系统小波动调节稳定性分析

JOURNAL OF HYDROELECTRIC ENGINEERING ›› 2015, Vol. 34 ›› Issue (1): 161-168.

Analysis of stability of tailrace open channel in small fluctuation governing system

Online:2015-01-25 Published:2015-01-25

Abstract

Abstract:

linearized space state model is established in consideration of open channel water level fluctuations, which is transformed to transfer function to describe small fluctuation in hydropower station. Effect of water level fluctuations in tail water open channel on regulating system stability region was analyzed based on Hurwitz stability criterion. The results show that open channel has slight influence on stability range in hydropower station without tailrace surge chamber; length and depth of open channel has an evident influence on stability region in in hydropower station with tailrace surge chamber, and water level fluctuation in open tailrace tunnel make for the stability of small fluctuation transient process.

WANG Mingjiang, YANG Jiandong, WANG Huang. Analysis of stability of tailrace open channel in small fluctuation governing system[J].JOURNAL OF HYDROELECTRIC ENGINEERING, 2015, 34(1): 161-168.

Analysis of stability of tailrace open channel in small fluctuation governing system

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