摘要
考虑明渠水位波动的影响,建立含尾水明渠水电站小波动调节线性化的空间状态数学模型,并转化为传递函数的形式,利用霍尔维茨稳定判据,分析尾水明渠水位波动对调节系统稳定域的影响。研究表明:尾水明渠对不带尾水调压室的电站稳定域影响不大,明渠长度和初始水深对带尾水调压室稳定域有明显的影响,考虑尾水明渠水位波动对调速系统小波动稳定有利。
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.
出处
《水力发电学报》
EI
CSCD
北大核心
2015年第1期161-168,188,共9页
Journal of Hydroelectric Engineering
基金
国家自然科学基金(51039005)
关键词
水电工程
尾水明渠
调速系统
小波动
稳定域
hydropower engineering
tailrace open channel
regulating system
small fluctuation
stability region
