上游串联双调压室系统小波动稳定性计算分析  

Fluctuation Stability Calculation and Analysis with Two Surge Chambers Connected in Series at Upstream of a Hydropower Station

作　　者：李振轩[1] 鞠小明[1] 陈云良[1] 张玉润 

机构地区：[1]四川大学水利水电学院,四川成都610065 [2]国电大渡河大岗山水力发电厂,四川石棉625409

出　　处：《人民黄河》2015年第3期103-106,共4页Yellow River

基　　金：国家自然科学基金资助项目(51109149)

摘　　要：具有较长引水隧洞的中低水头水电站,需要设置较大断面面积的调压室,受工程地形地质因素影响,建造单一大尺寸的调压室时施工较为困难,采用间隔一定距离的上游串联双调压室系统来代替单一大尺寸的调压室更为合适。结合工程实例,用瞬变流特征线计算方法,研究了串联双调压室系统小波动稳定性的主要影响因素。结果表明:两调压室之间的距离越远,系统需要的总稳定断面面积越大,靠近机组的调压室断面面积对系统小波动稳定性的作用大于远离机组的另一个调压室。Two surge chambers connected in series at upstream of a hydropower station with long diversion tunnel is needed to avoid using only one with an excess dimension for the convenience of construction. Stability of small water fluctuation in surge chamber demands a big cross section of the surge chamber especially for those power stations which have lower water head. Restricted by topography and geological conditions,it＇s hard to construct big- sized chamber. This paper gave an application of a project solved by characteristics method of transients flow. It discussed factors to influence the stability including the distance between the two surge chambers and the cross section areas of the two surge chambers. It reduced the chamber cross section areas by using this method.

关 键 词：上游串联双调压室 引水系统 小波动稳定性 水电站 

分 类 号：TV732.5[水利工程—水利水电工程]