Effects of oxygen on the formation of rabbit-like PD pattern in a void between metal surfaces

Author

Wu, Kai ; Komori, Fumitaka ; Suzuoki, Yasuo

Author_Institution

Center for Integrated Res. in Sci. & Eng., Nagoya Univ., Japan

fYear

2001

fDate

2001

Firstpage

37

Lastpage

40

Abstract

In a void between two metal surfaces, the φ-q-n pattern usually shows a band-like shape, but a quasi-rabbit-like shape often appeared for some time. After the voltage was applied for an hour, we opened the void to the air, and then re-applied the voltage on the sample. The transition from band-like to rabbit-like then to bandlike patterns was observed again. This suggests that the transition of the PD pattern may be due to the change of gas content in the void. By reducing the oxygen content in the void, the rabbit-like pattern became to appear earlier. This indicates the formation of the rabbit-like pattern is due to the oxygen content. These results may be useful in disclosing the mechanism of PD pattern transition in a usual void

Keywords

oxygen; partial discharges; voids (solid); O₂; band-like pattern; gas content; metal surface; oxygen effect; partial discharge pattern transition; rabbit-like pattern; void; Aging; Conductivity; Educational institutions; Electrodes; Insulation; Oxygen; Partial discharges; Shape; Surface discharges; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulating Materials, 2001. (ISEIM 2001). Proceedings of 2001 International Symposium on

Conference_Location

Himeji

Print_ISBN

4-88686-053-2

Type

conf

DOI

10.1109/ISEIM.2001.973551

Filename

973551