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- W4283729156 abstract "In this paper an efficient and fast iterative method has been successfully used for detection and localization of partial discharges in a power transformer. It is mainly based on finite elements method solving in an isotropic medium. Current methods for localizing mechanical waves emitted by partial discharges are subject to the use of at least three acoustic sensors. A new numerical localization method based on the Newton-Raphson iterative method is presented. It reduces the number of sensors to only two. The propagation of an acoustic wave (AW), initiated by a Gaussian-type partial discharge inside a power transformer is analyzed. The wave equation was solved numerically by finite element using Comsol Multiphysics software. Two sensors made possible to follow the spatio-temporal distribution of the acoustic pressure of five partial discharges distributed in different positions of the transformer. The performance of the proposed method is demonstrated through a comparison with a direct resolution method." @default.
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- W4283729156 date "2022-10-01" @default.
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- W4283729156 title "Iterative method for partial discharges location in power transformers" @default.
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- W4283729156 doi "https://doi.org/10.1016/j.epsr.2022.108225" @default.
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