Inductance inrush current time–frequency analysis
Inductance inrush current time–frequency analysis
 Author(s): Tin Benšić^{ 1} ; Dragan Vulin^{ 1} ; Marinko Stojkov^{ 2} ; Ivan Biondić^{ 1}
 DOI: 10.1049/ietsmt.2019.0035
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 Author(s): Tin Benšić^{ 1} ; Dragan Vulin^{ 1} ; Marinko Stojkov^{ 2} ; Ivan Biondić^{ 1}


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Affiliations:
1:
Faculty of Electrical Engineering , Computer Science and Information Technology Osijek , J.J. Strossmayer University Osijek , Kneza Trpimira 2B , Osijek , Croatia ;
2: Mechanical Engineering Faculty Slavonski Brod , J.J. Strossmayer University Osijek , Ivana Brlić Mažuranić Square 2 , Slavonski Brod , Croatia

Affiliations:
1:
Faculty of Electrical Engineering , Computer Science and Information Technology Osijek , J.J. Strossmayer University Osijek , Kneza Trpimira 2B , Osijek , Croatia ;
 Source:
Volume 14, Issue 1,
January
2020,
p.
64 – 70
DOI: 10.1049/ietsmt.2019.0035 , Print ISSN 17518822, Online ISSN 17518830
This study presents an application of the reassigned Gabor time–frequency transform to the inductance inrush current transient analysis. Measurement setup is constructed and the measurement methodology is presented to obtain fully controlled transformer inrush current measurements. The measured data is analysed by the reassigned Gabor time–frequency transform. The resulting time–frequency distribution of the measured signal shows how inrush DC component and harmonics change with time for different initial conditions. By extracting the stationary points from the reassigned Gabor transform, an algorithm for computing the time duration of the inrush is presented and applied to 88 measured transients.
Inspec keywords: transient analysis; power transformers; timefrequency analysis; electric current measurement; transients
Other keywords: 88 measured transients; current transient analysis; measurement setup; measurement methodology; fully controlled transformer inrush current measurements; resulting time–frequency distribution; inductance inrush; reassigned Gabor time–frequency; current time–frequency analysis; harmonics change; reassigned Gabor transform
Subjects: Transformers and reactors; Mathematical analysis; Integral transforms; Current measurement; Signal processing and detection
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