2023
DOI: 10.3390/app132212218
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Time-Frequency Analysis and Neural Networks for Detecting Short-Circuited Turns in Transformers in Both Transient and Steady-State Regimes Using Vibration Signals

David Granados-Lieberman,
Jose R. Huerta-Rosales,
Jose L. Gonzalez-Cordoba
et al.

Abstract: Transformers are vital elements in electrical networks, but they are prone to various faults throughout their service life. Among these, a winding short-circuit fault is of particular concern to researchers, as it is a crucial and vulnerable component of the transformers. Therefore, if this fault is not addressed at an early stage, it can increase costs for users and affect industrial processes as well as other electrical machines. In recent years, the analysis of vibration signals has emerged as one of the mo… Show more

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Cited by 4 publications
(2 citation statements)
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“…Extracting features from the frequency domain offers insights into data's periodic components and harmonic structures, represented in Table 1 [25][26][27]. Frequency domain analysis of vibration signals involves examining amplitude variations across different frequencies, contributing to a better understanding of vibration behaviour [9,11].…”
Section: Frequency Domain Analysismentioning
confidence: 99%
“…Extracting features from the frequency domain offers insights into data's periodic components and harmonic structures, represented in Table 1 [25][26][27]. Frequency domain analysis of vibration signals involves examining amplitude variations across different frequencies, contributing to a better understanding of vibration behaviour [9,11].…”
Section: Frequency Domain Analysismentioning
confidence: 99%
“…Standard harmonic features focus on the integral multiples of the fundamental frequency and have been widely applied. For instance, Total Harmonic Distortion (THD) has been utilized to characterize the frequency content of the vibration signal and is often represented as a percentage shown in Table 2 [25,26]. The Signal-to-Noise Ratio (SNR) and SINAD (Signal-to-Noise and Distortion Ratio) demonstrate the integration of SNR and SINAD with time domain features shown in Table 2; both are measured in decibels (dB), focusing on the signal's temporal properties and frequency domain features, especially in gearbox fault analysis [27].…”
Section: Frequency Domain Analysismentioning
confidence: 99%