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 language | English |
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Title of host publication | 2015 IEEE 11th International Conference on the Properties and Applications of Dielectric Materials (ICPADM 2015) |
Subtitle of host publication | 19-22 July 2015, Sydney, Australia |
Editors | Trevor Blackburn, Toan Phung, Robert Fleming |
Publisher | IEEE, Institute of Electrical and Electronics Engineers |
Pages | 320-323 |
Number of pages | 4 |
ISBN (Electronic) | 9781479989034 |
ISBN (Print) | 9781479989041 |
DOIs | |
Publication status | Published - 8 Oct 2015 |
Event | IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM) 2015 - University of New South Wales (UNSW), Sydney, Australia Duration: 19 Jul 2015 → 22 Jul 2015 Conference number: 11th |
Conference
Conference | IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM) 2015 |
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Abbreviated title | ICPADM 2015 |
Country/Territory | Australia |
City | Sydney |
Period | 19/07/15 → 22/07/15 |
Keywords
- degree of polymerization (DP)
- dissolved gas analysis
- oil-paper insulation
- reliability
- Statistical
- transformer