基于小波变换的断路器振动信号去噪处理
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摘要
高压断路器运行过程中,电路噪声与储能电动机负荷扰动引起采集信号出现尖峰脉冲,导致采集数据不准确,影响对断路器运行状态的准确判断。针对此问题,基于Daubechies6小波对采集到的数据进行处理,屏蔽高频噪声信号,得到能真实反映高压断路器工作状态的特征参数。将小波去噪算法应用于VJY-12P/T630-25-210(Z)型高压真空断路器试验平台,试验结果表明:经过去噪处理得到的特征参数能够准确反映断路器的实际运行状态,避免因干扰信号造成的系统误判和非计划停电事故。
Circuit noise and load disturbance of the energy storage motor during operation of the circuit breaker may cause spike pulse appear in collection signals which will lead to inaccurate collected data and affect accurate judgement on operating state of the circuit breaker. Therefore, this paper makes use of Daubechies6 wavelet to process collected data and shield high-frequency noise signals so as to obtain characteristic parameters truly reflect working state of the high voltage circuit breaker. The wavelet denoising algorithm is used in the test platform for VJY-12 P/T630-25-210(Z)typed high voltage vacuum circuit breaker. The test result indicates that characteristic parameters after denoising can accurately reflect actual operating state of the circuit breaker and avoid misjudgement on the system and unplanned blackout caused by interference signals.
Circuit noise and load disturbance of the energy storage motor during operation of the circuit breaker may cause spike pulse appear in collection signals which will lead to inaccurate collected data and affect accurate judgement on operating state of the circuit breaker. Therefore, this paper makes use of Daubechies6 wavelet to process collected data and shield high-frequency noise signals so as to obtain characteristic parameters truly reflect working state of the high voltage circuit breaker. The wavelet denoising algorithm is used in the test platform for VJY-12 P/T630-25-210(Z)typed high voltage vacuum circuit breaker. The test result indicates that characteristic parameters after denoising can accurately reflect actual operating state of the circuit breaker and avoid misjudgement on the system and unplanned blackout caused by interference signals.
引文
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[17] 程序,关永刚,张文鹏,等.基于因子分析和支持向量机算法的高压断路器机械故障诊断方法[J].电工技术学报,2014,29(7):209-215.CHENG Xu,GUAN Yonggang,ZHANG Wenpeng,et al.Diagnosis method on the mechanical failure of high voltage circuitbreakers based on factor analysis and SVM[J].Transactions of China Electrotechnical Society,2014,29(7):209-215.
[18] 黄建,胡晓光,巩玉楠.基于经验模态分解的高压断路器机械故障诊断方法[J].中国电机工程学报,2011,31(12):108-113.HUANG Jian,HU Xiaoguang,GONG Yunan.Machinery fault diagnosis of high voltage circuit breaker based on empirical mode decomposition[J].Proceedings of the CSEE,2011,31(12):108-113.
[19] 黄新波,陶晨,刘斌,等.智能断路器机械特性在线监测技术和状态评估[J].高压电器,2015,51(3):129-134,139.HUANG Xinbo,TAO Chen,LIU Bin,et al.On-line monitoring technology of mechanical properties and state evaluationmethod for intelligent circuit breaker[J].High Voltage Apparatus,2015,51(3):129-134,139.
[20] DENOISING C F.F C C,ANDRE T C,MARIANE R P,ANTONIO C S L.A new wavelet selection method for partial discharge denoising[J].Electric Power Systems Research,2015(125):184-195.
[21] 杨乘胜,郭乐,张旭.抗抖技术在断路器机械特性监测中的应用[J].电力自动化设备,2012,32(12):113-117.YANG Chengsheng,GUO Le,ZHANG Xu.Application of anti-dithering technology in monitoring the mechanical characteristics of circuit breakers[J].Electric Power Automation Equipment,2012,32(12):113-117.
[22] 孙银山,张文涛,张一茗,等.高压断路器分合闸线圈电流信号特征提取与故障判别方法研究[J].高压电器,2015,51(9):134-139.SUN Yinshan,ZHANG Wentao,ZHANG Yiming,et al.Research on feature value extraction and fault recognition of coil current signal in high-voltage circuit breaker[J].High Voltage Apparatus,2015,51(9):134-139.
[23] 李自强,魏磊,韩大鹏,等.基于相空间重构的高压断路器机械故障诊断研究[J].电力系统保护与控制,2018,46(9):129-135.LI Ziqiang,WEI Lei,HAN Dapeng,et al.Research on mechanical fault diagnosis of high voltage vacuum circuit breaker based on phase space reconstruction[J].Power System Protection and Control,2018,46(9):129-135.
[24] 于海,富银芳,于锋,等.计及母联开关的高压直流工程最后断路器智能判断方法[J].电力系统保护与控制,2018,46(5):152-158.YU Hai,FU Yinfang,YU Feng,et al.Intelligent judgment method for the last breaker in HVDC project including bus-tie switch[J].Power System Protection and Control,2018,46(5):152-158.
[25] 郑重,杜赫,邱馨仪,等.高压直流断路器用压接式IGBT芯片封装设计[J].智慧电力,2018,46(10):55-62.ZHENG Zhong,DU He,QIU Xinyi,et al.Packing design for press pack IGBT used in HVDC breaker[J].Smart Power,2018,46(10):55-62.
[26] 胡晓菁,刘娟楠,谷永刚.变电站主接线形式对断路器遮断容量校核的影响分析[J].智慧电力,2017,45(9):89-93.HU Xiaojing,LIU Juannan,GU Yonggang.Impact of substation main wiring arrangements on circuit breaker interrupting capacity verification[J].Smart Power,2017,45(9):89-93.
[27] 贺儒飞,李荷婷.发电机机端断路器非全相保护新型判据的研究[J].电力系统保护与控制,2018,46(17):165-170.HE Rufei,LI Heting.Research on the new open-phase protection criterions of the generator circuit breaker[J].Power System Protection and Control,2018,46(17):165-170.
[2] 黄绪勇,孙鹏,耿苏杰,等.基于关联规则和变权重系数的SF6高压断路器状态综合评估[J].电力系统保护与控制,2018,46(2):50-56.HUANG Xuyong,SUN Peng,GENG Sujie,et al.An assessment method of SF6 high-voltage circuit breaker based on association rules and variable weight coefficients[J].Power System Protection and Control,2018,46(2):50-56.
[3] 樊友平,王彤,李怡,等.±500 kV换流站交流滤波断路器闪络故障分析及外绝缘特性[J].高压电技术,2018,44(3):756-764.FAN Youping,WANG Tong,LI Yi,et al.Analysis of flashover accident and external insulation characteristics of AC filter circuit breaker in 500 kV convertor station[J].High Voltage Engineering,2018,44(3):756-764.
[4] 张浩.10 kV断路器智能化关键技术研究[D].西安:西安工程大学,2017.
[5] 刘志学.带有自动重合闸的断路器失灵保护[J].电力自动化设备,2012,32(1):147-151.LIU Zhixue.Circuit breaker failure protection with automatic reclosure[J].Electric Power Automation Equipment,2012,32(1):147-151.
[6] 赵洋,刘汉宇,曾庆军.基于机械振动信号的高压真空断路器故障诊断研究[J].高压电器,2016,46(2):46-51.ZHAO Yang,LIU Hanyu,ZENG Qingjun.Study on fault diagnosis of high voltage vacuum circuit breaker based on mechanical vibration signal[J].High Voltage Apparatus,2016,46(2):46-51.
[7] LIN T,AGGARWAL R K,KIM C H.Wavelet transform and artificial intelligence based condition monitoring for GIS[C]//Transmission and Distribution Conference and Exposition,2003 IEEE PES.Piscataway:IEEE Press,2003.
[8] 胡晓光,戴景民,纪延超,等.基于小波奇异性检测的高压断路器故障诊断[J].中国电机工程学报,2001,21(5):68-71.HU Xiaoguang,DAI Jingmin,JI Yanchao,et al.The fault diagnosis of high voltage circuit breaker based on wavelet singularity detection[J].Proceedings of the CSEE,2001,21(5):68-71.
[9] 缪希仁,吴晓梅,石敦义,等.采用HHT振动分析的低压断路器合闸同期辨识[J].电工技术学报,2014,29(11):154-161.MIAO Xiren,WU Xiaomei,SHI Dunyi,et al.Switching synchronism identification of low voltage circuit breaker utilizing HHT analysis to vibration signal[J].Transactions of China Electrotechnical Society,2014,29(11):154-161.
[10] 陈盟,郎兵,牟黎,等.真空断路器在线监测中分合闸时间的研究[J].高压电器,2015,51(1):86-91,97.CHEN Meng,LANG Bing,MU Li,et al.Study on opening and closing time of online monitoring for the vacuum circuit breaker[J].High Voltage Apparatus,2015,51(1):86-91,97.
[11] 杨恢先,王绪四,谢鹏鹤,等.改进阈值与尺度间相关的小波红外图像去噪[J].自动化学报,2011,37( 10):1167-1174.YANG Huixian,WANG Xusi,XIE Penghe,et al.Infrared image denoising based on improved threshold and inter-scale correlations of wavelet transform[J].Acta Automatica Sinica,2011,37(10):1167-1174.
[12] 唐进元,陈维涛,陈思雨,等.一种新的小波阈值函数及其在振动信号去噪分析中的应用[J].振动与冲击,2009,28(7):118-121,217.TANG Jinyuan,CHEN Weitao,CHEN Siyu,et al.A new wavelet threshold function and its application in vibration signal denoising[J].Journal of Vibration and Shock,2009,28(7):118-121,217.
[13] 刘伟.电容型电力设备绝缘在线监测与故障诊断的研究[D].西安:西安工程大学,2007.
[14] 侯慧娟,盛戈皞,姜文娟,等.基于信号模型参数辨识的变电站局部放电电磁波信号重构[J].高电压技术,2015,41(1):209-216.HOU Huijuan,SHENG Gehao,JIANG Wenjuan,et al.Signal reconstruction for partial discharge electromagnetic wave in substation based on signal model parameters identification[J].High Voltage Engineering,2015,41(1):209-216.
[15] 丁璨,原浠超,李志兵,等.SF6断路器弧触头的关合侵蚀特性[J].高电压技术,2014,40(10):3228-3234.DING Can,YUAN Xichao,LI Zhibing,et al.Contact erosion characteristics in making process of SF6 circuit breakers[J].High Voltage Engineering,2014,40(10):3228-3234.
[16] 李兴文.高压SF6断路器开断性能仿真方法研究综述[J].广东电力,2018,31(8):27-36.LI Xingwen.Research review simulation method forieterruption performance of high voltage SF6 circuit breaker[J].Guangdong Electric Power,2018,31(8):27-36.
[17] 程序,关永刚,张文鹏,等.基于因子分析和支持向量机算法的高压断路器机械故障诊断方法[J].电工技术学报,2014,29(7):209-215.CHENG Xu,GUAN Yonggang,ZHANG Wenpeng,et al.Diagnosis method on the mechanical failure of high voltage circuitbreakers based on factor analysis and SVM[J].Transactions of China Electrotechnical Society,2014,29(7):209-215.
[18] 黄建,胡晓光,巩玉楠.基于经验模态分解的高压断路器机械故障诊断方法[J].中国电机工程学报,2011,31(12):108-113.HUANG Jian,HU Xiaoguang,GONG Yunan.Machinery fault diagnosis of high voltage circuit breaker based on empirical mode decomposition[J].Proceedings of the CSEE,2011,31(12):108-113.
[19] 黄新波,陶晨,刘斌,等.智能断路器机械特性在线监测技术和状态评估[J].高压电器,2015,51(3):129-134,139.HUANG Xinbo,TAO Chen,LIU Bin,et al.On-line monitoring technology of mechanical properties and state evaluationmethod for intelligent circuit breaker[J].High Voltage Apparatus,2015,51(3):129-134,139.
[20] DENOISING C F.F C C,ANDRE T C,MARIANE R P,ANTONIO C S L.A new wavelet selection method for partial discharge denoising[J].Electric Power Systems Research,2015(125):184-195.
[21] 杨乘胜,郭乐,张旭.抗抖技术在断路器机械特性监测中的应用[J].电力自动化设备,2012,32(12):113-117.YANG Chengsheng,GUO Le,ZHANG Xu.Application of anti-dithering technology in monitoring the mechanical characteristics of circuit breakers[J].Electric Power Automation Equipment,2012,32(12):113-117.
[22] 孙银山,张文涛,张一茗,等.高压断路器分合闸线圈电流信号特征提取与故障判别方法研究[J].高压电器,2015,51(9):134-139.SUN Yinshan,ZHANG Wentao,ZHANG Yiming,et al.Research on feature value extraction and fault recognition of coil current signal in high-voltage circuit breaker[J].High Voltage Apparatus,2015,51(9):134-139.
[23] 李自强,魏磊,韩大鹏,等.基于相空间重构的高压断路器机械故障诊断研究[J].电力系统保护与控制,2018,46(9):129-135.LI Ziqiang,WEI Lei,HAN Dapeng,et al.Research on mechanical fault diagnosis of high voltage vacuum circuit breaker based on phase space reconstruction[J].Power System Protection and Control,2018,46(9):129-135.
[24] 于海,富银芳,于锋,等.计及母联开关的高压直流工程最后断路器智能判断方法[J].电力系统保护与控制,2018,46(5):152-158.YU Hai,FU Yinfang,YU Feng,et al.Intelligent judgment method for the last breaker in HVDC project including bus-tie switch[J].Power System Protection and Control,2018,46(5):152-158.
[25] 郑重,杜赫,邱馨仪,等.高压直流断路器用压接式IGBT芯片封装设计[J].智慧电力,2018,46(10):55-62.ZHENG Zhong,DU He,QIU Xinyi,et al.Packing design for press pack IGBT used in HVDC breaker[J].Smart Power,2018,46(10):55-62.
[26] 胡晓菁,刘娟楠,谷永刚.变电站主接线形式对断路器遮断容量校核的影响分析[J].智慧电力,2017,45(9):89-93.HU Xiaojing,LIU Juannan,GU Yonggang.Impact of substation main wiring arrangements on circuit breaker interrupting capacity verification[J].Smart Power,2017,45(9):89-93.
[27] 贺儒飞,李荷婷.发电机机端断路器非全相保护新型判据的研究[J].电力系统保护与控制,2018,46(17):165-170.HE Rufei,LI Heting.Research on the new open-phase protection criterions of the generator circuit breaker[J].Power System Protection and Control,2018,46(17):165-170.