Frequency Diagnostics of Transformer Insulating Parameters

Peter Brnacal; Miroslav Gutten; Cefer Viktor; Daniel Korenciak; Leszek Jarzębowicz

doi:10.1109/diagnostika49114.2020.9214676

Frequency Diagnostics of Transformer Insulating Parameters

Abstract

In the article is presented experimental analysis and diagnostics of insulating system oil-paper for power transformers, mainly by progressive frequency method – dielectric spectroscopy. In the 1-st part of the article is described base theory about measurement and diagnostics insulating part (oil and paper) of power transformers. In the 2-nd part of article is described measuring method of insulating frequency diagnostics - frequency domain spectroscopy (FDS). This method is used for analysis insulating condition of highvoltage equipment with insulating oil-paper. In the 3-st part of article is described measuring time method of insulating diagnostics - return voltage measurement (RVM). This method is used for analysis of condition of paper moisture of high-voltage equipment. The both measuring methods are unique in terms of analysis of insulating system of oil power transformers. In comparison with other methods, the RVM and FDS methods it is possible comparison and evaluate the moisture state of the dielectric paper of the power transformer with high reliability and accurate. Their reliability in determining moisture in paper was shown by determining the same result (3.5%) on the same measured distribution transformer.

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Category:: Conference activity
Type:: publikacja w wydawnictwie zbiorowym recenzowanym (także w materiałach konferencyjnych)
Language:: English
Publication year:: 2020
Bibliographic description:: Brnacal P., Gutten M., Viktor C., Korenciak D., Jarzębowicz L.: Frequency Diagnostics of Transformer Insulating Parameters// / : , 2020,
DOI:: Digital Object Identifier (open in new tab) 10.1109/diagnostika49114.2020.9214676
Verified by:: Gdańsk University of Technology