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• W2589369934 abstract "Ultra-high-frequency (UHF) method is an effective approach to power transformer partial discharge (PD) detection. The feature parameters extracted from UHF PD signal can be applied to insulation defect type recognition. In this study, a novel feature parameters extraction method based on texture features in time–frequency (TF) representation is proposed. PD detections of four typical insulation defects were performed on a 110kV oil-immersed power transformer. Time-domain waveform and corresponding TF representations or images of UHF PD signals were obtained. About 36 texture features were extracted from the grey-level co-occurrence matrix of TF images. The texture features were reduced into six new feature parameters by principal component analysis. These feature parameters were used as input of the support vector machine classifier for defect type recognition. The recognition accuracies of four kinds of typical defects reached 97.67, 97.00 97.67 and 98.33% proving that the proposed extracted feature parameters are suitable for insulation defect type recognition in power transformer." @default.
• W2589369934 created "2017-03-03" @default.
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• W2589369934 date "2017-07-01" @default.
• W2589369934 modified "2023-09-27" @default.
• W2589369934 title "Feature parameters extraction of power transformer PD signal based on texture features in TF representation" @default.
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• W2589369934 doi "https://doi.org/10.1049/iet-smt.2016.0342" @default.
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