Environmental Impact and Aging Properties of Natural and Synthetic Transformer Oils under Electrical Stress Conditions. (24th May 2021)

• Record Type: Journal Article
• Authors: Kurzweil, Peter; Schell, Christian; Haller, Rainer; Trnka, Pavel; Hornak, Jaroslav
• Is Part Of: Advanced sustainable systems. Volume 5:Number 8(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-05-24
• Subjects: breakdown voltage -- decomposition products -- ecotoxicity -- power transformer oils -- vegetable oils; Sustainable living -- Periodicals; Sustainability -- Periodicals; Green technology -- Periodicals; Periodicals; 628
• DOI: 10.1002/adsu.202100079
• Languages: English
• ISSNs: 2366-7486

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. Abstract : How well do synthetic and natural ester oils meet the technical and ecological requirements for sustainable power transformers in comparison to conventional mineral oils? Read more about material data, aging mechanisms, and molecular changes during long‐term operation.