Temperature influence on FRA spectrum of oil-filled and oil-free single-phase transformer

Mehdi Bagheri, B. T. Phung, Trevor Blackburn

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

A fast, non-destructive, and accurate technique has been introduced more than 30 years ago and industrialized since the last decade to recognize the transformer mechanical defect. This method called Frequency Response Analysis (FRA) and implemented as an off-line technique. Nowadays, transformer researchers as well as experts showing significant interest in real-time application of diagnosis methods such as Frequency Response Analysis (FRA), while accurate interpretation of FRA signature is still challenging. Recent studies reveal that apart from winding deformation, FRA data can also be influenced by temperature and moisture variation in transformer paper insulation. Hence, this study has specifically concentrated on the influence of temperature variation of the transformer winding on FRA spectrum. For this, a single phase model transformer is fabricated and taken as a test object. The test object temperature in the presence and absence of the oil, before and after dry-out process is changed widely from low to high temperatures and the frequency response traces of the windings are recorded. The results are discussed in detail and deviated anti-response and resonances are compared.

Original languageEnglish
Title of host publicationICPADM 2015 - 2015 IEEE 11th International Conference on the Properties and Applications of Dielectric Materials
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages95-98
Number of pages4
ISBN (Electronic)9781479989034
DOIs
Publication statusPublished - Oct 8 2015
Externally publishedYes
Event11th IEEE International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2015 - Sydney, Australia
Duration: Jul 19 2015Jul 22 2015

Publication series

NameProceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials
Volume2015-October

Other

Other11th IEEE International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2015
CountryAustralia
CitySydney
Period7/19/157/22/15

Keywords

  • Frequency response analysis
  • Moisture content
  • Temperature
  • Transformer diagnosis

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Materials Chemistry

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