[1]卢小芬,方瑞明.变压器局部放电在线检测中DSI干扰抑制[J].华侨大学学报(自然科学版),2005,26(1):35-37.[doi:10.3969/j.issn.1000-5013.2005.01.009]
　Lu Xiaofen,Fang Ruiming.Suppression of Discrete Spectral Interference in Partial Discharge of Transformer during On-Line Detection[J].Journal of Huaqiao University(Natural Science),2005,26(1):35-37.[doi:10.3969/j.issn.1000-5013.2005.01.009]
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变压器局部放电在线检测中DSI干扰抑制()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第26卷
期数:
2005年第1期
页码:
35-37
栏目:
出版日期:
2005-01-20

文章信息/Info

Title:
Suppression of Discrete Spectral Interference in Partial Discharge of Transformer during On-Line Detection
文章编号:
1000-5013(2005)01-0035-03
作者:
卢小芬; 方瑞明
华侨大学信息科学与工程学院; 华侨大学信息科学与工程学院 福建泉州362021; 福建泉州362021
Author(s):
Lu Xiaofen;  Fang Ruiming
College of Information Science and Engineering, Huaqiao University, 362021, Quanzhou, China
关键词:
变压器;  局部放电;  周期性窄带干扰;  快速傅里叶变换
Keywords:
transformer;  partial discharge;  periodic narrow band interference or discrete spectral interference;  fast Fourier transform
分类号:
TM406; TM835.4
DOI:
10.3969/j.issn.1000-5013.2005.01.009
文献标志码:
A
摘要:
针对运行中变压器局部放电在线监测信号中的周期性窄带干扰 (DSI),分析DSI与局部放电信号的频谱特征 .在此基础上,提出采用基于快速Fourier变换 (FFT)的功率谱估计法进行DSI信号检测 .采用级联二阶IIR陷波滤波器,对放电信号进行处理,滤除DSI信号以抑制干扰 .详细介绍IIR陷波滤波器的设计方法,它对局部放电信号造成的波形畸变较小 .仿真结果验证了该方法的有效性 .
Abstract:
Aiming at the periodic narrow band interference in partial discharge signal of transformer during the operation of on line monitoring, the authors take effective measures to suppress this discrete spectral interference (DSI). Such mcasures include an analyis of spectral characteristics of DSI and partial discharge signal; and a detection of DSI signal by adopting fast Fourier transform (FFT) based power spectrum estimate; and a treatment of discharge signal by adopting cascaded second order notch filter which filters the DSI signal. With regard to this second order notch filter, the authors give a detailed account of its design method which causes fairly little waveform distortion of the partial discharge signal. Simulation rcsults have verified the validity of this method.

参考文献/References:

[1] 邱昌容, 王乃庆. 电工设备局部放电及其测试技术 [M]. 北京:机械工业出版社, 1994.7-8.
[2] 高胜友, 朱德恒, 谈克雄. 变压器局部放电在线监测信号处理技术的研究 [J]. 清华大学学报(自然科学版), 2003(9):1181-1183.doi:10.3321/j.issn:1000-0054.2003.09.008.
[3] Sher Z K, Zhu Deheng, Jin Xianhe. A new adaptive technieue for on-line partial discharge monitoring [J]. IEEE Transactions on Dielectrics and Electrical Insulation, 1995(4):700-707.doi:10.1109/94.407034.
[4] 王祁, 钟升. 用小波变换提取高压变压器局部放电脉冲的研究 [J]. 电工技术学报, 1997(4):50-53.
[5] 张士宝, 董旭柱. 局部放电监测中现场干扰的分析与抑制 [J]. 清华大学学报(自然科学版), 1997(8):107-110.
[6] 周正. 统计与自适应信号处理 [M]. 北京:电子工业出版社, 2003.278-287.

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更新日期/Last Update: 2014-03-23