Deflection of streamer channels in high magnetic field

Author

Hara, M. ; Suehiro, J. ; Wakiyama, T.

Author_Institution

Dept. of Electr. Eng., Kyushu Univ., Fukuoka, Japan

Volume

27

Issue

6

fYear

1992

fDate

12/1/1992 12:00:00 AM

Firstpage

1179

Lastpage

1185

Abstract

Streamer propagation on a dielectric film under transverse magnetic field of 3 T produced by a superconducting magnet is investigated using the Lichtenberg figure technique. A streamer propagation mode is proposed, taking account of the electric field in the space charge region left behind the streamer and the field enhancement effect at the streamer tip. Through comparison of the experimental results of the streamer deflection characteristics with the theoretical prediction, the electric field in the space charge region is supposed to reach a value of 2 to 3 kV/cm. The internal field causes voltage drop across the space charge region, while the electric field is enhanced in the concentrated positive streamer head. On the other hand, the negative streamer spreads uniformly and the field concentration effect at the tip is weak

Keywords

magnetic field effects; superconducting magnets; surface discharges; 3 T; Lichtenberg figure technique; concentrated positive streamer head; experimental results; field concentration effect; field enhancement effect; high magnetic field; negative streamer; space charge region; streamer channel deflection; streamer deflection; streamer propagation mode; streamer tip; superconducting magnet; transverse magnetic field; Electrodes; Lorentz covariance; Magnetic fields; Magnetic films; Space charge; Superconducting films; Superconducting magnets; Surface discharges; System testing; Voltage;

fLanguage

English

Journal_Title

Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

0018-9367

Type

jour

DOI

10.1109/14.204869

Filename

204869