大型泵站水泵机组振动信号滤波方法  

Vibration signal filtering method of pump unit in a large pumping station

作　　者：唐荣桂 邵知宇 樊锦川 张炜 唐鸿儒 TANG Ronggui;SHAO Zhiyu;FAN Jinchuan;ZHANG Wei;TANG Hongru(Rural Water Conservancy Development Center of Jiangsu,Nanjing 210029,China;College of Electrical,Energy and Power Engineering,Yangzhou University,Yangzhou 225009,China;Taizhou Yinjiang Canal Administration of Jiangsu,Taizhou 225321,China)

机构地区：[1]江苏省农村水利科技发展中心,江苏南京210029 [2]扬州大学电气与能源动力工程学院,江苏扬州225009 [3]江苏泰州引江河管理处,江苏泰州225321

出　　处：《水利水电科技进展》2022年第3期86-89,111,共5页Advances in Science and Technology of Water Resources

基　　金：江苏省科技重点研发项目(BE2015734);江苏省水利科技项目(2015016,2019063)。

摘　　要：针对大型泵站水泵机组运行时振动信号易受多种因素影响产生随机误差、噪声干扰,进而影响机组健康状态评价结果的问题,对水泵机组振动信号滤波方法进行分析研究。以南水北调东线某泵站水泵机组运行时机泵联轴器处的振动信号为例,分别使用巴特沃斯滤波器、基于汉宁窗的FIR滤波器以及基于谐波小波的滤波器3种滤波方法对水泵机组振动信号进行滤波处理并进行对比分析。结果表明:巴特沃斯滤波器和基于汉宁窗的FIR滤波结果中存在时域波形的时延和轴心轨迹的连线,滤波不完全,而基于谐波小波的滤波几乎能够完全滤除干扰;对于特定频段的滤波,基于谐波小波的滤波在频段范围比较小的时候优势更加明显。Aiming at the problem that the vibration signal of pump unit is susceptible to random error and noise interference caused by various factors,which affects the evaluation result of the health status of pump unit,the filtering methods of vibration signal of pump unit were analyzed and studied.Taking the vibration signal at the pump coupling of a pumping station from the East Route of the South-to-North Water Transfer Project as an example,filtering methods based on Batworth,Hanning window,and harmonic wavelet were used to filter the vibration signal of the pump unit.The comparative analysis results show that there are time delay and line of axis trajectory in the FIR results of filtering methods based on Batworth and Hanning window,indicating incomplete filtering,while the harmonic wavelet filtering can almost completely filter out the interference.The advantages of harmonic wavelet filtering are more obvious when the frequency range is smaller for a certain frequency band.

关 键 词：水泵机组 大型泵站 振动信号处理 滤波方法 谐波小波 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]