Breakdown strength of vegetable-based oils under AC and lightning impulse voltages

Author

Vukovic, Dragana ; Tenbohlen, Stefan ; Harthun, Jörg ; Perrier, Christophe ; Fink, Harald

Author_Institution

Inst. of Power Transm. & High Voltage Technol., Univ. Stuttgart, Stuttgart, Germany

fYear

2011

fDate

26-30 June 2011

Firstpage

1

Lastpage

4

Abstract

The breakdown strength of vegetable-based oil (VBO) and mineral oil is compared by means of experimental determination of breakdown voltage. These oils were tested under AC and positive lightning impulse voltages for uniform and non-uniform electrical field. The oil gap varied from 2 mm up to 85 mm. The results show same or higher AC breakdown strength of VBO compared to mineral oil for small gaps and uniform electrical field, whereas for lightning impulses and non-uniform field breakdown strength of VBO is reduced.

Keywords

lightning protection; power transformers; transformer oil; vegetable oils; AC breakdown strength; breakdown voltage; electrical field; lightning impulse voltages; mineral oil; vegetable-based oils; Breakdown voltage; Electric breakdown; Electrodes; Minerals; Pollution measurement; Power transformers; Vegetable oils; Vegetable-based oil; breakdown voltage; mineral oil; power transformers;

fLanguage

English

Publisher

ieee

Conference_Titel

Dielectric Liquids (ICDL), 2011 IEEE International Conference on

Conference_Location

Trondheim

ISSN

2153-3725

Print_ISBN

978-1-4244-7352-6

Electronic_ISBN

2153-3725

Type

conf

DOI

10.1109/ICDL.2011.6015468

Filename

6015468