A model for determining the unipolar ionic saturation current in parallel wire-cylinder electrodes during corona discharge

Author

Moronis, Antonios X. ; Simou, Nikolaos ; Kiousis, Konstantinos N. ; Fylladitakis, Emmanouil D.

Author_Institution

Dept. of Energy Technol. Eng., Technol. Educ. Inst. (TEI) of Athens, Athens, Greece

Volume

21

Issue

3

fYear

2014

fDate

Jun-14

Firstpage

1035

Lastpage

1043

Abstract

This paper presents a model for the determination of the ionic unipolar corona saturation current in parallel wire-cylinder electrodes in the air, based on the geometrical characteristics of the electric field lines distributing in the space surrounding the electrodes, under high voltage dc application. The distribution of the lengths of the electric field lines connecting the electrodes is determined by finite element analysis. Then the acquired data are treated theoretically in order to calculate the total saturation unipolar corona current limit for the aforementioned electrode arrangement. Experimental investigation has shown that corona current is closely related to the unipolar saturation current limits derived from the proposed model.

Keywords

corona; discharges (electric); electric fields; electrochemical electrodes; finite element analysis; ionisation; corona current; corona discharge; electric field lines; finite element analysis; high voltage dc application; parallel wire cylinder electrodes; unipolar ionic saturation current; Corona; Current density; Electric fields; Electrodes; Equations; Mathematical model; Wires; Corona; air gaps; discharges; electrodes; finite element methods;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/TDEI.2014.6832246

Filename

6832246