Multi-variable approach for evaluating transformer paper insulation

Yi Cui, Daniel Martin, Tapan Saha, Hui Ma, Chandima Ekanayake, Nick Lelekakis

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

2 Citations (Scopus)

Abstract

In this paper, a statistical approach for evaluating the transformer's paper insulation is proposed. The proposed approach adopts multi-variable analysis to investigate the correlations between the degree of polymerization (DP) of paper insulation and increase rates of different dissolved gases in oil. Moisture in paper, oxygen and temperature are important factors influencing paper insulation degradation and included in the investigation. The reliabilities of utilizing different dissolved gases in the evaluation of DP value of an oil-pressboard insulation system are examined. The significance test of dissolved gases is also performed to find the most influential gases in the estimation of DP value. Moreover, the mutual correlation between different dissolved gases is taken into account to improve the reliability of DP estimation. Extensive accelerated ageing experiments on model oil-pressboard insulation systems are conducted and the measurement results are used to validate the proposed approach.

Original languageEnglish
Title of host publication2015 IEEE 11th International Conference on the Properties and Applications of Dielectric Materials (ICPADM 2015)
Subtitle of host publication19-22 July 2015, Sydney, Australia
EditorsTrevor Blackburn, Toan Phung, Robert Fleming
PublisherIEEE, Institute of Electrical and Electronics Engineers
Pages320-323
Number of pages4
ISBN (Electronic)9781479989034
ISBN (Print)9781479989041
DOIs
Publication statusPublished - 8 Oct 2015
EventIEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM) 2015 - University of New South Wales (UNSW), Sydney, Australia
Duration: 19 Jul 201522 Jul 2015
Conference number: 11th

Conference

ConferenceIEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM) 2015
Abbreviated titleICPADM 2015
CountryAustralia
CitySydney
Period19/07/1522/07/15

Keywords

  • degree of polymerization (DP)
  • dissolved gas analysis
  • oil-paper insulation
  • reliability
  • Statistical
  • transformer

Cite this