DocumentCode :
3647782
Title :
Comparative experimental study of dielectric strength of oil-cellulose insulation for mineral and vegetable-based oils
Author :
Dejan Vuković;Mark Jovalekic;Stefan Tenbohlen;Jörg Harthun;Christophe Perrier;Mamadou Lamine Coulibaly;Harald Fink
Author_Institution :
Institute of Power Transmission and High Voltage, Technology (IEH), University of Stuttgart, Germany
fYear :
2012
fDate :
6/1/2012 12:00:00 AM
Firstpage :
424
Lastpage :
428
Abstract :
In this paper the results of experimental investigation on breakdown strength under AC and BIL voltage of impregnated cellulose elements in combination with oil gaps are presented. Within investigated two models three different types of breakdowns are generated: through bulk oil gap, over oil-pressboard interface (creep breakdown) and puncture breakdowns of paper insulation. In each experiment mineral oil insulation system was compared with vegetable-based oil (VBO) system. It is observed that for used composite models these two oils differ not only in breakdown voltages but also in breakdown types.
Keywords :
"Electric breakdown","Electrodes","Minerals","Insulation","Power transformers","Breakdown voltage","Conductors"
Publisher :
ieee
Conference_Titel :
Electrical Insulation (ISEI), Conference Record of the 2012 IEEE International Symposium on
ISSN :
1089-084X
Print_ISBN :
978-1-4673-0488-7
Type :
conf
DOI :
10.1109/ELINSL.2012.6251503
Filename :
6251503
Link To Document :
بازگشت