Abstract
Although the UHF technique is immune from electrical interference; communication noises, thermal noise from the detection system, and periodic pulse-shaped noise from thyristor operation are usually found in the UHF signal. In this paper, a method based on discrete wavelet transforms is introduced. Three steps in the de-noising process are studied and discussed. Hundreds of combinations involved in the process are compared. An artificial signal is created by mixing the specific noise with a 'clean' UHF signal. The optimal process and corresponding parameters are defined by comparing the 'clean' signal and the de-noised version of the artificial signal.
Original language | English |
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Pages | 166-169 |
Number of pages | 3 |
DOIs | |
Publication status | Published - Oct 2004 |
Event | 2004 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, 2004. CEIDP '04. - Boulder, United States Duration: 17 Oct 2004 → 20 Oct 2004 |
Conference
Conference | 2004 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, 2004. CEIDP '04. |
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Country/Territory | United States |
City | Boulder |
Period | 17/10/04 → 20/10/04 |
Keywords
- denoising
- uhf signal
- pd detection
- transformers
- wavelet technique