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Title

Investigation of Distribution Transformers Vibrations in Terms of Core and Winding Condition Assessment

Authors

[ 1 ] Instytut Elektroenergetyki, Wydział Inżynierii Środowiska i Energetyki, Politechnika Poznańska | [ P ] employee

Scientific discipline (Law 2.0)

[2.9] Environmental engineering, mining and energy

Year of publication

2022

Published in

Energies

Journal year: 2022 | Journal volume: vol. 15 | Journal number: iss. 1

Article type

scientific article

Publication language

english

Keywords
EN
  • power transformer
  • transformer diagnostics
  • vibroacoustic method
Abstract

EN This work refers to the criterion values used to assess the state of the active part of the transformer based on the analysis of the effective value of the total vibration acceleration and the frequency spectrum. It was proved in the work that the criteria values should be differentiated for transformers of different rated power. Transformers with lower rated power are characterized by lower RMS values of vibration acceleration than units with higher rated power, which cannot remain without impact on the criteria values. Trend analysis of the total aRMS values may reveal increasing defects before the currently applicable criteria values are exceeded. In addition, the influence of the position of the sensor on the frequency spectrum of the obtained signals was analyzed. It was proved that the sensors should be mounted in the middle of the transformer tank, between its lower part and the cover. The dependence of RMS value of vibration acceleration on no-load losses was also determined for transformers of different types but the same rated power. This relationship will not have a large share in the total vibrations of the transformer, due to slight changes in the value of aRMS occurring for all analyzed units.

Pages (from - to)

0013-1 - 0013-18

DOI

10.3390/en15010013

URL

https://www.mdpi.com/1996-1073/15/1/13/htm

Comments

article number: 0013

License type

CC BY (attribution alone)

Open Access Mode

open journal

Open Access Text Version

final published version

Date of Open Access to the publication

at the time of publication

Full text of article

Download file

Access level to full text

public

Points of MNiSW / journal

140.0

Impact Factor

3.004 [List 2020]

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