| Suppression of Periodic Narrowband Interferences in Cable Partial Discharge Detections |
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| 作者姓名： | LIAO Rui-jin LV Jiang DU Yan LU Yun-cai |
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| 作者单位： | Key Laboratory of High Voltage Engineering and Electrical New Technology , Ministry of Education, Electrical Engineering College of Chongqing University, Chongqing 400030 China |
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| 摘 要： | There are background noises and interferences in the signal acquired,due to partial discharge(PD) detection system covers a broad frequency band.To suppress periodic narrowband signal which is a quite serious interference in PD measurement,the existing suppression method is introduced,the new method of wavelet packet transform is mainly studied to de-noise the periodic narrowband in XLPE cable PD detection system,which is based on the db4 basic wavelet using soft threshold.The results of the experiment show that wavelet packet transform is effective in restraining the periodic narrowband interferences to extract the PD pulses in XLPE cable PD monitoring system.
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| 关 键 词： | partial discharge periodic narrowband interference wavelet packet transform XLPE cable |
| 收稿时间： | 2006/5/13 0:00:00 |
| 修稿时间： | 2006/5/13 0:00:00 |
Suppression of Periodic Narrowband Interferences in Cable Partial Discharge Detections |
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| LIAO Rui-jin,LV Jiang,DU Yan,LU Yun-cai.Suppression of Periodic Narrowband Interferences in Cable Partial Discharge Detections[J].Storage & Process,2006(9):48-51. |
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| Authors: | LIAO Rui-jin LV Jiang DU Yan LU Yun-cai |
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| Institution: | Key Laboratory of High Voltage Engineering and Electrical New Technology , Ministry of Education, Electrical Engineering College of Chongqing University, Chongqing 400030 China |
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| Abstract: | There are background noises and interferences in the signal acquired,due to partial discharge(PD) detection system covers a broad frequency band.To suppress periodic narrowband signal which is a quite serious interference in PD measurement,the existing suppression method is introduced,the new method of wavelet packet transform is mainly studied to de-noise the periodic narrowband in XLPE cable PD detection system,which is based on the db4 basic wavelet using soft threshold.The results of the experiment show that wavelet packet transform is effective in restraining the periodic narrowband interferences to extract the PD pulses in XLPE cable PD monitoring system. |
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| Keywords: | partial discharge periodic narrowband interference wavelet packet transform XLPE cable |
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