抽水蓄能机组无叶区压力脉动改善与厂房减振研究  

Study on Pressure Pulsation Improvement of Vaneless Zone of Pumped Storage Units and Vibration Reduction of Pumped Storage Power Plant

作　　者：桂中华 郭旭东 欧阳金惠[3] 肖业祥[4] GUI Zhonghua;GUO Xudong;OUYANG Jinhui;XIAO Yexiang(Tech no logy center State Grid Xinyuan Compa ny LTD.,Beijing,100161,China;HeBei Zhanghewan State Grid Xinyuan Company LTD.,Shijiazhuang,050300,China;State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin,China Institute of Water Resources and Hydropower Research 100048,China;State Key Laboratory of Hydroscience and Engineering&Department of Energy and Power Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]国网新源控股有限公司技术中心,北京市100161 [2]河北张河湾蓄能发电有限责任公司,石家庄市050300 [3]中国水利水电科学研究院流域水循环模拟与调控国家重点实验室,北京市100048 [4]清华大学水沙科学与水利水电工程国家重点实验室&能源与动力工程系,北京市100084

出　　处：《水电与抽水蓄能》2019年第5期75-77,82,共4页Hydropower and Pumped Storage

基　　金：国家自然科学基金资助项目(51479093)

摘　　要：张河湾电站机组自投产以来,在发电工况,特别是满负荷时存在强烈的振动,严重危害设备的运行安全,同时对厂房结构也有一定的破坏作用.本文通过对电站3号机组开展全面系统的振动测试分析,发现转轮叶片与活动导叶之间动静干涉产生的无叶区压力脉动幅值较大,且主频100Hz与局部厂房结构的某阶固有频率接近,引发了局部厂房结构共振.为此,从减小水力振源的激振能量入手,对张河湾电站3号机进行了转轮改造,改造后无叶区压力脉动明显下降,厂房振动有效值大幅降低,成功解决了厂房振动问题.Since the operation of Zhanghewan power station,there had been strong vibration in the generator operation mode,especially at full load,which seriously endangers the operation safety of equipment and damages the structure of the plant to some extent.Through the systematic vibration test and analysis of the unit 3,it was obvious that the resonance of the plant was caused by the pressure pulsation of Vaneless Zone at 100 Hz main frequency.To reduce the excitation energy of the hydraulic vibration source,the re-modification of runner of unit 3 at Zhanghewan power station was carried out.After the re-modification of runner,the pressure pulsation of Vaneless Zone was significantly reduced,and the vibration of Pumped Storage Power plant was greatly reduced.

关 键 词：抽水蓄能电站 厂房振动 无叶区压力脉动 

分 类 号：TV734[水利工程—水利水电工程]