DataVXAdvanced Sustainable SystemsPaper
journal article·2021-08Open access

Environmental Impact and Aging Properties of Natural and Synthetic Transformer Oils under Electrical Stress Conditions

Peter Kurzweil, Christian Schell, Rainer Haller, Pavel Trnka, Jaroslav Hornak

Advanced Sustainable Systems· Volume 5· Issue 8
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Source abstract

Abstract

Abstract Against the background of environmental compatibility and unrestricted technical usability, synthetic, and natural transformer oils are critically compared in long‐term tests under high voltage using electrical and instrumental analytical methods. Synthetic alkyl esters of pentaerythrol appear to be sustainable and sometimes superior substitutes for mineral oils in terms of chemical stability, viscosity, permittivity, and heat transport. Natural esters of unsaturated fatty acids are found to be unsuitable for equipment exposed to moist air. Adsorbed water appears to be a general problem in transformer oils. The aging mechanisms and molecular changes during long‐term operation include radical reactions, and the formation, isomerization and cleavage of CC bonds. Extensive material data are provided.
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Research context

OpenAlex topics: Power Transformer Diagnostics and Insulation · High voltage insulation and dielectric phenomena · Corrosion Behavior and Inhibition

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Electrochemistry Laboratory Technical University of Applied Sciences Kaiser‐Wilhelm‐Ring 23 Amberg D‐92224 Germany

Faculty of Electrical Engineering University of West Bohemia Univerzitní 8 Pilsen 30100 Czech Republic

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