Calculation of corona voltage-current characteristics in air

Author

Kumara, Sarath ; Serdyuk, Yuriy ; Gubanski, Stanislaw M.

Author_Institution

High Voltage Eng., Chalmers Univ. of Technol., Gothenburg, Sweden

fYear

2009

fDate

28-31 Dec. 2009

Firstpage

489

Lastpage

492

Abstract

This paper focuses on numerical simulations of positive dc corona in air in coaxial cylindrical electrode arrangement. The study aimed at developing a computer model accounting for background physical processes in corona discharge and its verification by means of comparison of calculated corona characteristics with experimental data. Several parameters of corona, namely, inception voltages, voltage current characteristics and onset field strength values were used for evaluations of the model performance. The validated model was further utilized to investigate the effects of ion mobilities on corona current and variations of the ionization intensity on corona inception voltages.

Keywords

air; corona; electric current measurement; ion mobility; numerical analysis; voltage measurement; coaxial cylindrical electrode arrangement; computer model; corona discharge; corona inception voltages; corona voltage-current characteristics; ion mobilities; ionization intensity; numerical simulations; onset field strength; positive dc corona; Air gaps; Coaxial components; Computational modeling; Corona; Electrodes; Mathematical model; Poisson equations; Space charge; Space technology; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial and Information Systems (ICIIS), 2009 International Conference on

Conference_Location

Sri Lanka

Print_ISBN

978-1-4244-4836-4

Electronic_ISBN

978-1-4244-4837-1

Type

conf

DOI

10.1109/ICIINFS.2009.5429811

Filename

5429811