基于水电站运行稳定性的调压室设置条件探讨  

Discussion on the setting condition of surge chamber based on operation stability of hydropower station

作　　者：鲍海艳[1] 杨建东[2] 李进平[2] 付亮[3] 

机构地区：[1]长沙理工大学水利工程学院,长沙410114 [2]武汉大学水资源与水电工程科学国家重点实验室,武汉430072 [3]湖南省电力公司试验研究院,长沙410007

出　　处：《水力发电学报》2011年第2期44-48,83,共6页Journal of Hydroelectric Engineering

摘　　要：调压室设置条件是水电站初步设计的重要判据之一。本文在理想水轮机模型的前提下,建立水电站运行稳定性的数学模型,数值模拟了弹性水击、刚性水击的临界稳定边界线,在刚性水击前提下推导出调压室设置判别式。与文献[6]判别式及文献[5]中图3.12对比,佐证了本文判别式的合理性。同时分析了允许Tw值随调速器参数bt、Td的增大而增大的规律性,并结合工程实例与文献[3]基于调保参数的调压室设置判据进行对比分析,得出了中、高水头水电站是否设置调压室的允许Tw值由调保参数来决定;而低水头水电站的允许Tw值则由运行稳定性来决定的结论。Setting condition of a surge chamber is a key criterion in design of hydropower station.By assuming an ideal turbine,a mathematical model of hydropower operation stability is developed;boundaries of stable regime are simulated for the rigid and elastic water hammer cases;then a discriminant for the setting condition of the rigid case is obtained.A comparison with [6]and [5]shows that this discriminant is rational.The analysis gives a trend that the allowable Tw increases with the governor parameter bt or Td.Through an application to an engineering project and a comparison with [3],it is concluded that Tw is determined by regulation guaranteed parameters for high-and middle-head hydropower stations,while by operation stability for low-head stations.

关 键 词：水力学 调压室 稳定性 设置条件 调速器参数 

分 类 号：TV134[水利工程—水力学及河流动力学]