Peter Havran, Roman Cimbala, Juraj Kurimský, Jozef Király, Vladimír Kohan, Jozef Humeník

Influence of thermal stress rate on changes in electrical insulating oils

Číslo: 2/2021
Periodikum: Acta Electrotechnica et Informatica
DOI: 10.15546/aeei-2021-0008

Klíčová slova: cole-Cole, complex electrical modulus, Debye, impedance spectroscopy, oils, thermal stress

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Anotace: This work solves the comparison of two different thermal stress times for selected liquid insulation materials based on transformer oils by impedance spectroscopy. Research is focused on actual and progressive liquid insulation materials. The scientific objectives of the experiment are focused on the determination of hypotheses, defined by predictable electrophysical parameters in experimental conditions, which are described in the analysis of the measured results.