首尾直接连接的长隧洞梯级水电站引水发电系统水力过渡过程模型设计  

Model Design of Hydraulic Transients of Directly Connected Long-tunnel Cascade Power Stations

作　　者：石刘宏幸[1] 王文蓉[1] 鞠小明[1] 

机构地区：[1]四川大学水电学院,四川成都610065

出　　处：《四川大学学报（工程科学版）》2004年第1期24-27,共4页Journal of Sichuan University (Engineering Science Edition)

摘　　要：首尾直接连接的梯级水电站可以节省后级电站的首部枢纽建筑,前级电站的尾水通过一段无压隧洞直接进入后级电站的发电引水隧洞。采用这种布置方式的两梯级水电站的引水发电系统水力过渡过程参数需要通过模型试验确定,首尾直接连接使得长隧洞梯级水电站引水发电系统水力过渡过程模型试验约束条件增加,模型设计和试验分析复杂。推导了首尾直接连接的长隧洞梯级水电站引水发电系统水力过渡过程模型试验应满足的相似条件,对模型比尺选择及相似问题进行了探讨,并以工程实例介绍了首尾直接连接的梯级水电站引水发电系统水力过渡过程模型设计及试验方法。Dam and other head constructions of the next power station can be saved in directly connected cascade power stations. The tailrace water of the former station goes into the diversion tunnel of the latter directly through an open channel. Model experiment is needed to decide the hydraulic transient parameters of this hydro-power waterway. Constraints of this experiment are increased and the model design and data analysis are more complex. Similarity relations of model experiment in this kind of cascade stations are derived, and some similarity problems such as how to choose model scales are discussed too. A practical application is given to show model design and experimental methods in such a cascade power stations.

关 键 词：梯级水电站 水力过渡过程 模型设计 引水发电系统 首尾直接连接 

分 类 号：TV732[水利工程—水利水电工程]