基于EWT和修正Morris法的抽水蓄能电站主进水阀自激振动研究

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振动与冲击 ›› 2019, Vol. 38 ›› Issue (19) : 52-57.

论文

李红辉，周建中，张勇传，许颜贺，田弟巍，王齐飞

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Self-excited vibration of pumped storage power station’smain inlet valve based on EWT and modified Morris method

LI Honghui, ZHOU Jianzhong, ZHANG Yongchuan, XU Yanhe, TIAN Diwei，WANG Qifei

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摘要

为研究主进水阀的自激振动机理，首先基于瞬变流理论建立抽水蓄能电站过水系统精细化数值模型，计算得到上游测压管水位随时间的变化曲线。然后采用经验小波变换法(EWT)对电站采集的主进水阀自激振动信号和数值仿真信号进行特征提取和频谱分析，以验证数值模型的正确性。接着引入修正Morris参数筛选法，从众多性能参量中探明管道长度、管道的水击波速和主进水阀阀门间隙为敏感参量。最后，针对敏感参量设置3个方案分别进行数值模拟，以研究其对自激振动过程的具体影响。结果表明：主进水阀阀门间隙对自激振动的振幅增长速率及幅值影响大，但对系统的周期影响小；管道的水击波速及长度对自激振动的振幅增长速率、幅值以及周期影响极大。

Abstract

In order to study self-excited vibration mechanism of the main inlet valve of a pumped storage power station, its waterflowing system’sprecision numerical simulation model was established based on the transient flow theory to obtain the variation curve of water level of the upstream pressure measuring pipe with time by calculation.The empirical wavelet transform (EWT)method was used to do feature extraction and spectral analysisfor self-excited vibration signals and simulatedonesof the main inlet valve,and verify the correctness of the numerical model.The modified Morris method was introduced to find pipeline length, pipelinewater hammer wave velocity and valve clearance of main inlet valve being sensitive parameters invarious performance ones.Finally, aiming at sensitive parameters,3 schemes were set to do numerical simulation, respectively and study their specific effects on self-excited vibration process. The results showedthat main inlet valve clearance has a large influence on self-excited vibration amplitude and its growth rate, but has little effect on system’s period; pipeline water hammer wave velocity and pipeline length have great influence on self-excited vibration amplitude, its growth rate and system’s period.

导出引用

李红辉，周建中，张勇传，许颜贺，田弟巍，王齐飞. 基于EWT和修正Morris法的抽水蓄能电站主进水阀自激振动研究[J]. 振动与冲击, 2019, 38(19): 52-57

LI Honghui, ZHOU Jianzhong, ZHANG Yongchuan, XU Yanhe, TIAN Diwei，WANG Qifei. Self-excited vibration of pumped storage power station’smain inlet valve based on EWT and modified Morris method[J]. Journal of Vibration and Shock, 2019, 38(19): 52-57

参考文献

[1] 程加堂，段志梅，熊燕. QAPSO-BP算法及其在水电机组振动故障中的应用[J]. 振动与冲击，2015, 34(23): 177-181.
CHENG Jia-tang，DUAN Zhi-mei，XIONG Yan. QAPSO-BP and its application in vibration fault diagnosis for hydroelectric generating unit. Journal of Vibration and Shock, 2015, 34(23): 177-181.
[2] Wylie E B, Streeter V L. Fluid Transients in Systems [M]. Englewood Cliffs, N J Prentice Hall, 1993.
[3] 周建旭，张建.有压输水系统减振措施研究[R].水利水电科技进展，2004.
ZHOU Jian-xu, ZHANG Jian. Analysis of damping measures for pressurized conveyance system [R]. Advances In Science and Technology of Water Resources, 2004. (in Chinese)
[4] 索丽生，周建旭，刘有德.水电站有压输水系统的水力共振[J] . 水利水电科技进展，1998, 18(4)：12-14.
SUO Li-sheng, Zhou Jian-xu, Li You-de. Hydraulic resonance in pressurized piping system of hydropower plants [J]. Advance in Science and Technology of Water Resources,1998, 18(4): 12-14. (in Chinese)
[5] 周建旭，索丽生，郭锐勤. 水电站水力振动实例分析[J]. 水力发电学报，1998(4),50-54.( in Chinese)
ZHOU Jian-xu, SUO Li-sheng, GUO rui-qin. A case study of hydraulic resonance at a hydropower plant [J]. Journal of Hydroelectric Engineering, 1998(4): 50-54. (in Chinese)
[6] 梅祖彦. 抽水蓄能发电技术[M]. 北京：机械工业出版社，2000.
MEI Zu-yan. Technique of pumped-storage power station[M]. Beijing : Tsinghua University Press, 2000. (in Chinese)
[7] 叶复萌，朱渊岳，樊红刚，等.抽水蓄能电站复杂管系的自激振动研究[J]. 水力发电学报，2007, 26(4): 135-140. YE Fu-meng, Zhu Yuan-yue, Fan Hong-gang, et al. Research on self-excited oscillations happened in a complex pipe system of a pumped storage power station[J]. Journal of hydroelectric engineering,2007,26(4): 135-140. (in Chinese)
[8] 朱渊岳，樊红刚，陈乃祥，等. 蓄能电站复杂管道系统自激振动的防止和消除[J]. 清华大学学报:自然科学版，2006, 46(8): 1434-1437.
ZHU Yuan-yue, FAN Hong-gang, CHEN Nai-xiang, et al. Prevention of self-excited oscillation in complicated water diversion channels of pumped storage power stations[J]. Journal of tsinghua university: Science and technology, 2006,46(8) : 1434-1437. (in Chinese)
[9] 张绍春. 阀门结构在复杂引水管道中引起的自激振动[J].云南水力发电，1998, (3): 20-23.
ZHANG Shao-chun. Self-excited vibration of valves in complicated water diversion conduits [J]. Yunnan waterpower, 1998,(3):20-23.(in Chinese)
[10] 吴嵌嵌，张雷克，马震岳.水电站水机电-结构系统动力耦联模型研究及数值模拟[J].振动与冲击，2017, 36(16): 1-10.
WU Qian-qian, ZHANG Lei-ke, MA Zhen-yue. The model analysis and numerical simulation of dynamic coupled hydraulic-mechanical-electric-structural system for hydropower station. Journal of Vibration and Shock, 2017, 36(16): 1-10.
[11] GILLES J. Empirical Wavelet Transform[J]. IEEE Transactions on Signal Processing, 2013,61(16): 3999-4010.
[12] 肖启阳，李健，孙洁娣，等. 基于EWT及模糊相关分类器的管道微小泄漏检测[J].振动与冲击，2018, 37 (14): 122-129.
XIAO Qi-yang, LI Jian, SUN Jie-di, et al. Pipeline small leakage detection based on the EWT and AFCC[J]. Journal of Vibration and Shock, 2018, 37 (14): 122-129.
[13] PAN Jun, CHEN Jing-long, ZI Yan-yang, et al. Monocomponent feature extraction for mechanical fault diagnosis using modified empirical wavelet transform via data-driven adaptive Fourier spectrum segment[J]. Mechanical system and signal processing, 2016,72(73): 160-183.
[14] 张瑞，邓艾东，司晓东，等. 一种新的声发射信号消噪及故障诊断方法[J]. 振动与冲击, 2018, 37(4): 75-81.
Zhang Rui，Deng Ai-dong，Si Xiao-dong， et al. A new method for acoustic emission signal de-noised and fault diagnosis . Journal of Vibration and Shock, 2018, 37(4): 75-81.
[15] 李志农，朱明，褚福磊，等.基于经验小波变换的机械故障诊断方法研究[J].仪器仪表学报，2014,35(11): 2423-2432.
LI Zhi-nong, ZHU Ming, CHU Fu-lei, et al. Mechanical fault diagnosis method baesd on empirical wavelet transform[J]. Chinese journal of scientific instrument, 2014 ,35(11): 2423-2432.
[16] 向玲，李媛媛.经验小波变换在旋转机械故障诊断中的应用[J].动力工程学报，2015,35(12):975-981.
XIANGH Ling, LI Yuan-yuan. Application of empirical wavelet transform in fault diagnosis of rotary mechanisms[J]. Journal of Chinese society of power engineering, 2015, 35(12): 975-981.
[17] 张飞，唐拥军，王国柱，等.球阀动水关闭过程中球阀与机组稳定性分析[J].振动与冲击，2017,36(8)：244-249. ZHANG Fei, TANG Yong-jun, WANG Guo-zhu. Stability analysis of ball valves and units in ball valve dynamic water closing process [J]. Journal of Vibration and Shock, 2017, 36(8): 244-249.
[18] 张学军，梁军.基于EEMD-近似熵和储备池的风电功率混沌时间序列预测模型[J]. 物理学报，2013, 62(5): 050505-1 -050505-10.
ZHANG Xue-jun, Liang Jun. Chaotic time series prediction model of wind power based on ensemble empirical mode ecomposition-approximate entropy and reservoir [J]. Acta physica sinica,2013,62(5):050505-1-050505-10.
[19] HUANG D,LIU Y. Characteristics of EMD filter bank and identification of abnormal sound of ball bearing [J]. Joumal of Vibration Measurement&Diagnosis,2012,32(2):332-336.
[20] 黄金良，杜鹏飞，何万谦，等. 城市降雨径流模型的参数局部灵敏度分析 [J]. 中国环境科学，2007,27(2) :549-553.
HE Jin-liang, DU Peng-fei, HE Wan-qian, et al. Local sensitivity analysis for urban rainfall runoff modelling [J].
China Environmental Science, 2007, 27(4): 549-553.
[21] Lenhart T, Eckhardt K, Fohrer N, et al. Comparison of two different approaches of sensitivity analysis [J]. Physics & Chemistry of the Earth, 2002, 27(9): 645-654.