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- W1980365048 abstract "The use of direct wave to locate the position of the PD source is of better accuracy in transformer partial discharge ultrasound array positioning. For the signal received by ultrasonic sensor is consisted by direct wave, non-direct wave and a variety of noise, a direct wave separation method based on improved waveform matching is proposed in this paper. It is considered that the direct wave first reaches the ultrasonic sensor. A benchmarks triangle is built and then the attenuation coefficient and the signal frequency are both calculated. In order to search the matching wave, the benchmarks triangle is to pan and zoom. Finally, the best matching waveform is selected from a large number of matching waveforms as a direct wave signal. The result of simulation shows that the method can isolate the ultrasonic direct wave signal from the received signal, which provides some theoretical guidance to improve the position accuracy of the PD source." @default.
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- W1980365048 date "2013-02-01" @default.
- W1980365048 modified "2023-09-26" @default.
- W1980365048 title "Separation Research of Ultrasonic Wave in Transformer Partial Discharge Based on Improved Waveform Matching" @default.
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- W1980365048 doi "https://doi.org/10.4028/www.scientific.net/amm.291-294.2325" @default.
- W1980365048 hasPublicationYear "2013" @default.
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