Evaluation of Bubble Formation in Transformer Insulation Systems - a Step Forward

Christian Possniker, Shanika Yasantha Matharage, Zhongdong Wang, David Walker, Christoph Krause, Andree Hilker, Muhammad Daghrah

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Bubble formation in transformers could result in severe consequences leading to power outages and huge financial losses. There is an increased risk of bubble formation in the future due to increasing load demand and much higher loading fluctuations. The bubble formation process in transformer insulation has been studied for decades and the water content in the paper has been addressed as the most influential impact parameter. However, results from the most common insulating material combination of Kraft paper and mineral oil vary widely and a meaningful comparison for other parameters or insulating material combinations is challenging. This paper presents the development and verification of a simple test setup that can be used to study various impact factors on the bubble formation process with a high degree of confidence.

Original languageEnglish
Title of host publication2022 IEEE 21st International Conference on Dielectric Liquids, ICDL 2022
PublisherIEEE Computer Society
ISBN (Electronic)9781665484916
DOIs
Publication statusPublished - 2022
Event21st IEEE International Conference on Dielectric Liquids, ICDL 2022 - Sevilla, Spain
Duration: 29 May 20222 Jun 2022

Publication series

NameProceedings - IEEE International Conference on Dielectric Liquids
Volume2022-May
ISSN (Print)2153-3725
ISSN (Electronic)2153-3733

Conference

Conference21st IEEE International Conference on Dielectric Liquids, ICDL 2022
Country/TerritorySpain
CitySevilla
Period29/05/222/06/22

Keywords

  • bubble formation
  • moisture dynamics
  • thermal profile
  • transformer failure
  • water content in paper

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