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电网技术  2011 

基于信号子空间转换与快速子空间测向算法的局部放电超声阵列信号测向方法

, PP. 194-198

Keywords: 局部放电,超声阵列传感器,宽带阵列信号,信号子空间转换法,测向,快速子空间测向算法

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Abstract:

提出一种基于信号子空间转换法(signalsubspacetransform,SST)与快速子空间测向算法(fastsubspaceestimationofDOA,FDOA)的局放超声阵列信号高精度测向新方法。首先利用SST算法对局放超声阵列信号进行聚焦处理,使得原始信号的宽频空域信息被最大限度地保留,从而实现宽带信号方位信息的累积。然后采用FDOA对聚焦后的窄带信号进行波达方向估计,FDOA无需特征分解,无需估计整个协方差矩阵,可提高运算速度,且具有更高的测向精度。在此基础之上,应用医学宽频超声信号和4′4超声阵列传感器模型,进行局放超声阵列信号测向仿真研究,仿真结果表明,测向误差小于2°,验证了该方法的正确性。

References

[1]  王忠东,桂峻峰,谈克雄,等.局部放电脉冲在单绕组变压器中传播过程的仿真分析[J].电网技术,2003,27(4):39-42.
[2]  Wang Zhongdong,Gui Junfeng,Tan Kexiong,et al.Simulation analysis on propagation of partial discharge pulses in single-winding transformer[J].Power System Technology,2003,27(4):39-42(in Chinese).
[3]  李剑,王小维,金卓睿,等.变压器局部放电超高频信号多尺度网格维数的提取与识别[J].电网技术,2010,34(2):159-163.
[4]  Li Jian,Wang Xiaowei,Jin Zhuorui,et al.Multi-scale grid dimension extraction and recognition of ultra-high frequency signals of transformer partial discharge[J].Power System Technology,2010,34(2):159-163(in Chinese).
[5]  程汪刘,郭跃霞,王静,等.快速傅里叶变换和广义形态滤波器在抑制局部放电窄带干扰中的应用[J].电网技术,2008,32(10):94-97.
[6]  Cheng Wangliu,Guo Yuexia,Wang Jing,et al.Application of fast Fourier transform and generalized morphological filter in suppression of narrow-band interference in partial discharge signal [J].Power System Technology,2008,32(10):94-97(in Chinese).
[7]  唐炬,宋胜利,李剑,等.局部放电信号在变压器绕组中传播特性研究[J].中国电机工程学报,2002,22(10):92-95.
[8]  Stoica P,Soderstorm T.Statistical analysis of MUSIC and subspace rotation estimator[J].IEEE Trans on Signal Processing,1991,39(8):1836-1847.
[9]  李燕青.超声波法检测电力变压器局部放电的研究[D].保定:华北电力大学,2004.
[10]  刘云鹏,律方成,李成榕,等.基于多导体传输线模型的单相变压器绕组中放电的距离函数法定位[J].电工技术学报,2006,21(1):115-120.
[11]  Liu Yunpeng,Lü Fangcheng,Li Chengrong,et al.Distance function locating partial discharge in single phase transformer winding based on MTL model[J].Transactions of China Electro Technical Society,,2006,21(1):115-120(in Chinese).
[12]  高文胜,王猛,谈克雄,等.油纸绝缘中局部放电的典型波形及其频谱特性[J].中国电机工程学报,2002,22(2):1-5.
[13]  Gao Wensheng,Wang Meng,Tan Kexiong,et al.Typical pulse shape and frequency characteristic of the PD signal in oil-paper insulation[J].Proceedings of the CSEE,2002,22(2):1-5(in Chinese).
[14]  淡文刚,陈祥训,郑健超.油中局部放电脉冲波形的测量与特性分析[J].电网技术,2000,24(6):37-40.
[15]  Dan Wengang,Chen Xiangxun,Zheng Jianchao.Measurement and analysis of pulse current of partial discharge in oil[J].Power System Technology,2000,24(6):37-40(in Chinese).
[16]  Tang Ju,Song Shengli,Li Jian,et al.Propagation characteristics of partial discharge pulses in transformer windings[J].Proceedings of the CSEE,2002,22(10):92-95(in Chinese).
[17]  孙才新,罗兵,顾乐观,等.变压器局部放电源的电-声和声-声定位法及其评断的研究[J].电工技术学报,1997,12(5):49-52.
[18]  Sun Caixin,Luo Bing,Gu Leguan,et al.Research on locating partial discharge sources in transformer with electric-supersonic method and supersonic method and evaluation on each[J].Transactions of China Electrotechnical Society,1997,12(5):49-52(in Chinese).
[19]  桂峻峰,高文胜,谈克雄.变压器绕组局部放电脉冲响应的相关分析及电气定位[J].清华大学学报:自然科学版,2003,43(3):304-306.
[20]  Gui Junfeng,Gao Wensheng,Tan Kexiong.Correlation of partial discharge pulse signals in transformer windings to locate discharge locations[J].Journal of Tsinghua University:Science and Technology ,2003,43(3):304-306(in Chinese).
[21]  王乾,杨立新.变压器油电气性能的影响因素分析[J].电力建设,2008,29(8):22-24.
[22]  Wang Qian,Yang Lixin.Analysis of factors affecting transformer oil electric performances[J].Electric Power Construction,2008,29(8):22-24(in Chinese).
[23]  王国利,郝艳捧,袁鹏,等.变压器局部放电超高频检测中的混频技术研究[J].中国电机工程学报,2004,24(10):115-120.
[24]  Wang Guoli,Hao Yanpeng,Yuan Peng,et al.Application of frequency mixing technique to ultra-high-frequency PD detection for transformers[J].Proceedings of the CSEE,2004,24(10):115-120(in Chinese).
[25]  Mangeret R,Farenc J,Ai B,et al.Optical detection of partial discharges using fluorescent fiber[J].IEEE Trans on Electrical Insulation,1991,26(4):783-789.
[26]  Yongchang Zhu,Takada T,Inoue Y,et al.Dynamic observation of needle-plane surface-discharge using the electro-optical Pockels effect[J].IEEE Trans on Dielectrics and Electrical Insulation,1996,3(3):460-468.
[27]  Judd M D,Pryor B M,Kelly S C.et al.Transformer monitoring using the UHF technique[C]//IEE Conference on High Voltage Engineering.London:IEEE,1999:362-365.
[28]  Judd M D,Farish O.Power transformer monitoring using UHF sensors:installation and testing[C]//Proceedings of the 2000 IEEE International Symposium on Electrical Insulation.Anaheim,CA USA:IEEE,2000:373-376.
[29]  Judd M D,Cleary G P.Power transformer monitoring using UHF sensors:site trials[C]//Proceedings of the 2002 IEEE International Symposium on Electrical Insulation.Boston,MA USA:IEEE,2002:145-149.
[30]  唐志国,李成榕,黄兴泉,等.基于辐射电磁波检测的电力变压器局部放电定位研究[J].中国电机工程学报,2006,26(3):17-21.
[31]  Tang Zhiguo,Li Chengrong,Huang Xingquan,et al.Study of partial discharge location in power transformer based on the detection of electromagnetic waves [J].Proceedings of the CSEE,2006,26(3):17-21(in Chinese).
[32]  罗勇芬,李彦明,刘丽春.变压器局部放电的超声波和射频联合检测技术的现状和发展[J].变压器,2003,40(12):28-31.
[33]  Luo Yongfen,Li Yanming,Liu Lichun.Trend and situation of compound detection technique of radio frequency and ultrasound for transformer partial discharge[J].Transformer,2003,40(12):28-31(in Chinese).
[34]  罗日成,李卫国,李成榕.基于阵列信号处理的变压器内局部放电源多目标定位方法[J].电网技术,2006,30(1):65-69.
[35]  Luo Richeng,Li Weiguo,Li Chengrong.A multi-target method to locate internal partial discharge sources with in transformer based on array signal processing [J]. Power System Technology,2006,30(1):65-69(in Chinese)
[36]  罗日成,李卫国,李成榕.变压器局部放电多目标无源定位中去除测向交叉定位虚假点的快速算法[J].电网技术,2005,29(19):27-32.
[37]  Luo Richeng,Li Weiguo,Li Chengrong.A high-speed algorithm to remove mendacious points of direction-finding cross-localization in multi-target passive localization of partial discharge source within power transformer[J].Power System Technology,2005,29(19):27-32(in Chinese).
[38]  谢庆,李燕青,律方成,等.超声相控阵与宽带阵列信号处理相结合的油中局部放电定位方法[J].中国电机工程学报,2009,29(28):13-17.
[39]  Xie Qing,Li Yangqing,Lü Fangcheng,et al.A method for PD location in oil combining ultrasonic phased array with wideband array signal processing[J].Proceedings of the CSEE,2009,29(28):13-17(in Chinese).
[40]  Hung H ,Kaveh M.Focusing matrices for coherent signal-subspace processing[J].IEEE Trans on Acoustics,Speech and Signal Processing,1988,36(8):1272-1281.
[41]  余继周,陈定昌.一种DOA估计的快速子空间算法[J].现代电子技术,2005(28):90-92.
[42]  Yu Jizhou,Chen Dingchang.A fast subspace algorithm for DOA Estimation[J].Modern ElectronicTech,2005(28):90-92(in Chinese).
[43]  马洪,杨琳琳,黎英云.二维快速子空间DOA估计算法[J].华中科技大学学报,2008,36(4):20-23.
[44]  Ma Hong,Yang Linlin,Li Yingyun.A fast subspace algorithm for two-dimensional DOA estimation[J].HUST Journal,2008,36(4):20-23(in Chinese).
[45]  谢庆.基于空间谱估计的变压器局放超声阵列定位方法研究[D].北京:华北电力大学,2010.

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