Title :
Assessment of passivated mineral oil in mitigating the formation of copper sulphide in transformers
Author :
Akshatha, A. ; Ravi, Kumar A. ; Rajan, J. ; Murthy, K. ; Viswanath, G.R. ; Ramachandra, Haricharan
Author_Institution :
Central Power Res. Inst., Bangalore, India
fDate :
June 29 2014-July 3 2014
Abstract :
This study was taken up to understand the variations in concentrations of metal passivators like Irgamet 39 and BTA which are added to mitigate the effects of corrosive sulphur in mineral oil. The study has shown that both BTA and Irgamet 39 are effective in arresting the formation of copper sulphide on conductors. The effect of thermal ageing of oil in presence of reactive species like MBT and DBDS on the concentrations of passivators has been studied and discussed in this paper.
Keywords :
ageing; carbon compounds; copper compounds; passivation; power transformer insulation; sulphur; transformer oil; BTA; C6H5N3; Cu2S; DBDS; Irgamet 39; MBT; benzotriazole; copper sulphide; corrosive sulphur; dibenzyl disulphide; mercaptobenzothiozole; metal passivators; passivated mineral oil; thermal ageing; transformers; Aging; Conductors; Copper; DSL; Inductors; Nitrogen; Thermal conductivity; Benzothiazole (BTA); Copper sulphide; Dibenzyl disulphide (DBDS); Irgamet 39; Mercaptobenzothiozole (MBT); Passivators;
Conference_Titel :
Dielectric Liquids (ICDL), 2014 IEEE 18th International Conference on
Conference_Location :
Bled
DOI :
10.1109/ICDL.2014.6893137
