Transformer diagnostics using dissolved gas analysis and polarisation and depolarisation current measurements - A case study
Author(s)
Jadav, Raj B.
Saha, Tapan
Ekanayake, Chandima
Griffith University Author(s)
Year published
2011
Metadata
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This paper presents analysis of the measurements carried out on three distribution substation transformers. Dissolved Gas Analysis (DGA) and Polarisation/Depolarization Current (PDC) measurements were carried out on three transformers. DGA analysis is carried out using Ratio methods and Duval's triangle. In addition, furan and moisture analysis are done from the oil samples. Then, PDC results of the same transformers are used to calculate paper/oil conductivity. Furthermore a discussion on the results of DGA and PDC measurements is presented.This paper presents analysis of the measurements carried out on three distribution substation transformers. Dissolved Gas Analysis (DGA) and Polarisation/Depolarization Current (PDC) measurements were carried out on three transformers. DGA analysis is carried out using Ratio methods and Duval's triangle. In addition, furan and moisture analysis are done from the oil samples. Then, PDC results of the same transformers are used to calculate paper/oil conductivity. Furthermore a discussion on the results of DGA and PDC measurements is presented.
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Conference Title
Australasian Universities Power Engineering Conference: integrating renewables into the grid
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Subject
Electrical and Electronic Engineering not elsewhere classified