Study of the effects of alternating magnetic field on point-plane corona

Author

Bhangaonkar, Avinash S. ; Kulkarni, S.V. ; Shevgaonkar, R.K.

Author_Institution

Dept. of Electr. Eng., IIT Bombay, Mumbai, India

Volume

18

Issue

6

fYear

2011

fDate

12/1/2011 12:00:00 AM

Firstpage

1813

Lastpage

1820

Abstract

Although corona is a phenomenon known, measured and analyzed for many decades, there are still some aspects which could be further explored; one of them being, analysis of the effect of magnetic field on the corona process and its measurement. This paper addresses the phenomenon from a physical level, and the effect of magnetic field and its influence on the ultra-high frequency (UHF) measurement is analyzed from a plasma perspective. Calculations are made using various formulae, pertaining to plasma, to identify the influence of magnetic field on corona. The theory developed is backed by experimental work involving UHF based measurements. The effect of the magnetic field in the form of gyro-frequency influences the UHF measurement. Magnetic field is seen to reduce the power spectral density of corona in the 650-800 MHz band.

Keywords

corona; plasma diagnostics; alternating magnetic field effect; corona power spectral density; frequency 650 MHz to 800 MHz; gyrofrequency effect; point-plane corona process; ultrahigh frequency measurement; Coils; Corona; Discharges; Magnetic fields; Plasma temperature; UHF measurements; Corona; UHF measurement; magnetic field; point-plane;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/TDEI.2011.6118618

Filename

6118618