Effect of Copper on Ageing Behavior and Breakdown Voltage Properties of Transformer Oil

Autor:	Ajumon Somasekharan Pillai, J. Arul Linsely
Rok vydání:	2020
Předmět:	Materials science Transformer oil chemistry.chemical_element Copper Electronic Optical and Magnetic Materials law.invention chemistry law Ageing Breakdown strength Breakdown voltage Electrical and Electronic Engineering Composite material Transformer
Zdroj:	Transactions on Electrical and Electronic Materials. 22:439-451
ISSN:	2092-7592 1229-7607
DOI:	10.1007/s42341-020-00249-1
Popis:	In this paper, the “Breakdown Strength” of ester base liquid MIDEL 7131(MIDEL Ltd), Mineral Transformer oil (Grosvenor Oil Service), Diala D (Shell Ltd) and THESO insulating oil (Tetra Corp) that are subjected to three different ageing conditions is examined. The breakdown strength of thermally aged insulating oils with copper and without copper has also been tested. Therefore the effect of copper as a catalyst in ageing of insulating liquids was also examined. After analyzing the effect of copper on ageing indicated that, copper had a huge influence on darkening all the insulating oils except MIDEL 7131 and thereby accelerating the ageing process. The breakdown mechanism of oils has changed due to ageing with copper. In this paper, breakdown comparison of transformer oils are analyzed with different insulating oils like un-aged and aged. Transformer oils breakdown voltage test under 0.9 mm gap spacing and the average breakdown voltage behaviour, field behaviour, maximum field at the needle tip transformer oils are also investigated.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a3dba012eacc8c5080851299ccbda252 https://doi.org/10.1007/s42341-020-00249-1 Zobrazit plný text záznamu Full text from SpringerLink