水泵水轮机转轮全特性与蓄能电站过渡过程的相关性分析  

Analysis of relation between characteristics of pump-turbine runner and transition of pumped-storage power station

作　　者：杨琳[1] 陈乃祥[1] 

机构地区：[1]清华大学热能工程系,北京100084

出　　处：《清华大学学报（自然科学版）》2003年第10期1424-1427,共4页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金资助项目(50179018)

摘　　要：为研究水泵水轮机转轮全特性曲线对抽水蓄能电站过渡过程的影响,根据两者之间的相关性调整和优化可逆机转轮设计,该文结合工程算例,采用不同的水泵水轮机转轮全特性曲线,分别对抽水蓄能电站机组可控和不可控等不同状态下的过渡过程进行了模拟计算。计算表明,转轮全特性曲线是影响过渡过程的重要因素之一。根据转轮全特性曲线与过渡过程的相关性分析结果,使用全三维方法进行可逆机转轮设计。在设计过程中适当调整导叶相对高度等参数,改变特性曲线形状,减缓开度线变化斜率,可优化过渡过程。The transient flow in a pumpedstorage power station was predicted numerically to research the influence of pumpturbine runner on variations of the pumpedstorage power station flow rate. The analysis was also used to optimize the design of the pumpturbine runner relative to variations in the flow rate. The transient simulation investigated several different characteristics of the pumpturbine runner and various operating modes including controllable and uncontrollable state. The results show that the pumpturbine runner characteristic curves significantly affect the flow variations, especially when the load is rejected. The three dimensional analysis of the pumpturbine runner shows that adjusting the relative height of the guide blades can change the shape of the characteristic curves to optimize the transitions. 

关 键 词：可逆式水泵水轮机 转轮全特性 蓄能电站 过渡过程 相关性 反问题 水力机械 

分 类 号：TK734[交通运输工程—轮机工程]