Title :
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
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 Us, apparent ionic mobility K, etc, are derived. We show that Us is mainly a function of fluid number density N and cathode tip radius rp. The existence of a discontinuity in Us 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;
Conference_Titel :
Electrical Insulation, 1994., Conference Record of the 1994 IEEE International Symposium on
Conference_Location :
Pittsburgh, PA
Print_ISBN :
0-7803-1942-7
DOI :
10.1109/ELINSL.1994.401411
