<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The paper presents experimental diagnostics of the oil-paper insulating system of power transformers using progressive frequency method. The first part of the paper deals with the basic information about diagnostics of power oil transformers. The second part of the paper deals with the use of frequency domain spectroscopy (FDS) for power oil transformers. This method is used in the analysis of insulating condition of power transformer with the system of oil-paper. It was found that the results of these tests are highly influenced by the operating temperature during the experimental measurement. Moisture and conductivity between the insulating transformer paper and oil in an insulating system are highly dependent on the temperature. In the other part, the paper presents experimental results of the diagnostic measurement for a real traction oil transformer at different operating temperatures and states (with oil and without). Finally, the paper presents comparative measurement among several autotransformers with the same power. In experimental measurements, the correlation between the measured values and the operational aspects of the individual oil autotransformers are shown.</p></abstract>

The paper presents experimental diagnostics of the oil-paper insulating system of power transformers using progressive frequency method. The first part of the paper deals with the basic information about diagnostics of power oil transformers. The second part of the paper deals with the use of frequency domain spectroscopy (FDS) for power oil transformers. This method is used in the analysis of insulating condition of power transformer with the system of oil-paper. It was found that the results of these tests are highly influenced by the operating temperature during the experimental measurement. Moisture and conductivity between the insulating transformer paper and oil in an insulating system are highly dependent on the temperature. In the other part, the paper presents experimental results of the diagnostic measurement for a real traction oil transformer at different operating temperatures and states (with oil and without). Finally, the paper presents comparative measurement among several autotransformers with the same power. In experimental measurements, the correlation between the measured values and the operational aspects of the individual oil autotransformers are shown.

Frequency Diagnostics of Insulating System of Power Transformers

Electrical, Control and Communication Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

{"article-title":"Frequency Diagnostics of Insulating System of Power Transformers"}

The paper presents experimental diagnostics of the oil-paper insulating system of power transformers using progressive frequency method. The first part of the...

Frequency Diagnostics of Insulating System of Power Transformers

Published Online: Oct 13, 2020

Page range: 1 - 7

DOI: https://doi.org/10.2478/ecce-2020-0001

Keywords
Conductivity, Moisture, Power transformers, Spectroscopy

© 2020 Miroslav Gutten et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Frequency Diagnostics of Insulating System of Power Transformers

Published Online: Oct 13, 2020

Page range: 1 - 7

DOI: https://doi.org/10.2478/ecce-2020-0001

KeywordsConductivity, Moisture, Power transformers, Spectroscopy

© 2020 Miroslav Gutten et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
Conductivity, Moisture, Power transformers, Spectroscopy