Influence of ageing on conduction and breakdown in rape-seed and mineral oils

Author

Duy, C. Tran ; Denat, A. ; Lesaint, O. ; Bonifaci, N. ; Bertrand, Y. ; Daoud, W. ; Hassanzadeh, M.

Author_Institution

Grenoble Electr. Eng. Lab. (G2E Lab.), Grenoble Univ. & CNRS, Grenoble

fYear

2008

fDate

June 30 2008-July 3 2008

Firstpage

1

Lastpage

4

Abstract

The purpose of this work is to evaluate the chemical stability of a bio-degradable insulating oil composed by a mixture of esters based on rape-seed oil. The measurements are done in comparison with a commercial mineral oil. Both oils are subjected to accelerated ageing conditions at 120degC under air (open beaker method). Dielectric properties (dissipation factor, permittivity, conductivity, AC breakdown voltage) and chemical parameters (acidity, water content) are monitored during the ageing process. In the rape-seed based oil, ageing has a negligible influence on the breakdown voltage, whereas conductivity and acid content show a large increase.

Keywords

ageing; electric breakdown; electrical conductivity; insulating oils; permittivity; vegetable oils; ageing; bio-degradable insulating oil; breakdown voltage; chemical stability; dielectric properties; esters; mineral oils; monitoring; rape-seed oil; Aging; Biodegradation; Chemicals; Conductivity; Dielectrics and electrical insulation; Electric breakdown; Minerals; Oils; Petroleum; Stability;

fLanguage

English

Publisher

ieee

Conference_Titel

Dielectric Liquids, 2008. ICDL 2008. IEEE International Conference on

Conference_Location

Futuroscope-Chasseneuil

Print_ISBN

978-1-4244-1585-4

Electronic_ISBN

978-1-4244-1586-1

Type

conf

DOI

10.1109/ICDL.2008.4622526

Filename

4622526