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- W4309929524 abstract "This paper presents partial discharge (PD) localization in power transformers using the acoustic time reversal (ATR) method. The ATR method comprises three steps (a) measurement of the acoustic PD signal using at least one sensor, (b) time reversal of the measured signal and back injection into the transformer model through numerical simulation, (c) determining the focusing point of the back injected signal using the appropriate criterion that indicates the location of the PD source. The maximum acoustic pressure field criterion is used to determine the focusing point. The finite element method (FEM) based three-dimensional (3D) numerical simulation model of the power transformer with an acoustic PD source is used to investigate the acoustic wave propagation inside the transformer. The ATR method can locate the PD source in the transformer using a single sensor. In contrast, the time difference of arrival (TDoA) method requires at least four sensors for PD source localization. Additionally, the ATR method can be used to locate multiple PD sources in a transformer using a single sensor. The performance of the ATR method is investigated for different levels of signal noise, PD sources of different frequencies, various sensor positions, changing transformer geometries (size of the transformer, type of core, and shape of the tank), and using real PD source signal." @default.
- W4309929524 created "2022-11-30" @default.
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- W4309929524 date "2023-02-01" @default.
- W4309929524 modified "2023-10-18" @default.
- W4309929524 title "Performance analysis of acoustic sensors based time reversal technique for partial discharge localization in power transformers" @default.
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- W4309929524 doi "https://doi.org/10.1016/j.epsr.2022.108965" @default.
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