A new method for measuring the degradation level of transformer insulating oil in service

The aging process in transformer insulating oil was studied by measuring the leakage current in a ceramic sensor. The current of the sensor shows a close relationship with the acid value and the breakdown voltage of the transformer oil. The sensor has excellent physico-chemical properties, such as l...

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Bibliographic Details
Published inIEEE International Symposium on Electrical Insulation pp. 35 - 42
Main Authors Jin-Ho Bae, Young-Kap Chon, Young-Ku Kang
Format Conference Proceeding
LanguageEnglish
Published IEEE 1990
Subjects
Aging
Ceramics
Chemical sensors
Current measurement
Degradation
Impurities
Leakage current
Oil insulation
Petroleum
Power transformer insulation
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Summary:The aging process in transformer insulating oil was studied by measuring the leakage current in a ceramic sensor. The current of the sensor shows a close relationship with the acid value and the breakdown voltage of the transformer oil. The sensor has excellent physico-chemical properties, such as lack of chemical reaction with the oil and stable adsorption of conductive impurities. Therefore, the experimental data show good reproducibility.< >
ISSN:1089-084X
DOI:10.1109/ELINSL.1990.109703