抽水蓄能机组振动速度量积分为振动位移量的方法研究  

Study on Method of Vibration Velocity Integrated into Vibration Displacement for Pumped Storage Unit

作　　者：唐拥军 李超顺[2] 孙慧芳 于姗 杜雅楠 TANG Yongjun;LI Chaoshun;SUN Huifang;YU Shan;DU Yanan(Pumped-storage technological&economic research institute state grid XinYuan company Ltd.,Beijing 100761,China;School of Civil and Hydraulic Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]国网新源控股有限公司抽水蓄能技术经济研究院,北京市100761 [2]华中科技大学土木与水利工程学院,湖北省武汉市430074

出　　处：《水电与抽水蓄能》2022年第3期45-48,共4页Hydropower and Pumped Storage

基　　金：国家自然科学基金面上项目(51879111);国家电网公司科技项目“设备状态监测与评价系统优化提升研究与应用”(SGXYKJ-2021-049)。

摘　　要：抽水蓄能机组普遍具有水头高、转速快、双向旋转、过渡过程复杂和运行工况多变等显著特点,机组运行稳定性成为关注重点,而机组振动性能又是稳定性的重要指标,因此,机组状态监测或性能测试中,振动是必测的参数。对于抽水蓄能机组,适宜同时测量振动速度有效值和振动位移峰峰值,而同时布置速度传感器和位移传感器会增加成本支出。本文创新性地提出一种基于离散傅里叶变换及振动速度量信号获得振动位移信号的方法,并结合实例进行详细的论述。利用本方法,可全面掌握机组的振动性能和节约测量成本,具有极强的推广应用价值。Pumped storage units generally have notable characteristics of high head,fast rotating speed,bidirectional rotation,complicated transient process,polytropic operating conditions,etc.So the operational stability of unit is the center of attention.Furthermore,Vibration performance of unit is one of the important indicators of operational stability,therefore,vibration must be measured in unit condition monitoring or performance test.It is suitable for pumped storage unit to measure effective value of vibration velocity and peak-to-peak value of vibration displacement simultaneously.However,the cost will be increased for the installation of velocity sensor and displacement sensor at the same time.A method of obtaining vibration displacement signal was creatively put forward based on discrete Fourier transform and vibration velocity signal in this paper,in addition,it was discussed in detail with an example.Vibration performance of unit can be comprehensively mastered and measurement cost can be saved by using this method.So the method has a strong value of popularization and application.

关 键 词：抽水蓄能机组 振动 数值积分 傅里叶变换 

分 类 号：TV743[水利工程—水利水电工程]