Corona discharge inception as a function of pressure in gaseous and liquid nitrogen

Author

Hernandez-Avila, J.L. ; Bonifaci, N. ; Denat, A. ; Atrazhev, V.M.

Author_Institution

Lab. d´´Electrostat. et de Mater. Dielectr., Univ. Joseph Fourier, Grenoble, France

fYear

1994

fDate

5-8 Jun 1994

Firstpage

493

Lastpage

496

Abstract

We present the results of an investigation of corona discharge, for a point cathode, in high pressure nitrogen gas (up to 10 MPa) and in liquid nitrogen. Electrical and transport parameters such as threshold voltage U_s, apparent ionic mobility K, etc, are derived. We show that U_s is mainly a function of fluid number density N and cathode tip radius r_p. The existence of a discontinuity in U_s values for very high fluid density (i.e. N>3 10²¹ cm^-3) is discussed

Keywords

argon; cathodes; corona; electric breakdown; ion mobility; nitrogen; 10 MPa; N₂; apparent ionic mobility; cathode tip radius; corona discharge inception; discontinuity; electrical parameters; fluid number density; gaseous N₂; high pressure; liquid nitrogen; point cathode; pressure dependence; threshold voltage; transport parameters; Cathodes; Corona; Density measurement; Dielectric liquids; Electrodes; Electrons; Gases; Ionization; Nitrogen; Threshold voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 1994., Conference Record of the 1994 IEEE International Symposium on

Conference_Location

Pittsburgh, PA

ISSN

1089-084X

Print_ISBN

0-7803-1942-7

Type

conf

DOI

10.1109/ELINSL.1994.401411

Filename

401411