中文摘要：

随着我国经济建设的快速发展和转型升级,抽水蓄能技术在电力系统中,尤其是可再生能源的开发和利用过程中发挥着越来越重要的作用。我国抽水蓄能电站建设经历了快速发展阶段,并逐渐进入加速发展新阶段,目前已建电站机组出现的振动问题在行业内引起了高度重视。本文结合我国已建抽水蓄能电站机组转轮叶片和活动导叶数组合统计以及一个具体案例分析,对造成机组振动的主要原因——动静干涉和相位共振进行了详细的阐述,指出应集中对9/20和7/20及其相关水力激振机理的动态设计展开科学研究。结合对300 m水头段各大抽水蓄能电站所发现的振动问题,文章建议凝聚科研方向,积极开展对原型振动和水力脉动的现场测试和振动内在动态机理的理论、数值仿真和试验研究,不仅可解决已建机组的振动问题,提高机组的运行安全可靠性,延长寿命,而且对保障我国正在进行大量抽水蓄能的安全建设有非常重要且积极的意义。

英文摘要：

As China＇s economy is developing and upgrading rapidly, pumped storage technology becomes increasingly important in China＇s power-supply system and to China＇s policy of enhancing the exploitation of renewable energy. The construction of pumped storage projects （PSP） in China has experienced a rapid development stage and will gradually enter a faster developing stage. Therefore, various issues of power unit vibrations found in the operation of commissioned projects, have attracted great attention of the research community. Using the statistics of the number of runner blades in combination with the number of wicket gates and an analysis on specific cases, this paper presents a detailed explanation for the major causes of unit vibrations such as rotor-stator interaction and phase resonance, and suggests that the scientific research concentrate on the dynamic design of power units and particularly on two blade-gate number combinations of 7/20 and 9/20 and their mechanism of hydraulic excitation. In sight of the vibration problems found in various PSPs at a head range around 300 m, we recommend to focus on the field measurement of prototype vibrations and hydraulic pulsations, and to actively carry out experimental and theoretical studies on the dynamic mechanism. Such research will not only solve the existing vibration problems in the built projects, promote their safe and reliable operation, and prolong their service lives, but also make positive and important senses of ensuring the safe construction of numerous ongoing and future PSP projects.