Real-time dry-type transformer aging evaluation

Ilyas Soltanbayev, Mehdi Bagheri, Toan Phung

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

5 Citations (Scopus)


Dry-type transformers are quite popular in commercial and industrial applications. The IEEE and IEC standards on dry-type transformer loading provide a significant guideline and recommendation for transformer aging rate calculation. In this study, the fundamental information in these standards are used to develop a realtime dry-type transformer thermal model and evaluate transformer insulation performance in different conditions. Thermal model of the transformer can help to determine proper transformer operation condition, transformer aging rate, and approximately demonstrate transformer lifespan. Simulation studies show that increasing of transformer load and ambient temperature sampling frequency rates will lead to the increase of the accuracy of aging rate calculation and more precise lifespan estimation.

Original languageEnglish
Title of host publicationProceedings of 2017 International Symposium on Electrical Insulating Materials, ISEIM 2017
PublisherThe Institute of Electrical Engineers of Japan
Number of pages4
ISBN (Electronic)9784886860996
Publication statusPublished - Dec 4 2017
Event2017 International Symposium on Electrical Insulating Materials, ISEIM 2017 - Toyohashi, Japan
Duration: Sep 11 2017Sep 15 2017


Conference2017 International Symposium on Electrical Insulating Materials, ISEIM 2017


  • Aging rate
  • Dry type transformer
  • Hot-spot temperature
  • Online monitoring system
  • Remained lifetime
  • Transformer efficiency

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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