Title :
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
fDate :
June 30 2008-July 3 2008
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;
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
DOI :
10.1109/ICDL.2008.4622526
