Charging Insulating Barrier by Corona in Air in Large Coaxial System
Paper i proceeding, 2015

Results of the experimental study and computer simulations of corona charging of an insulating barrier in a large scale coaxial arrangement are reported. A computational model describing transport of charged species generated by corona and their dynamics on dielectric surfaces is presented. The measured and computed voltage-current characteristics of corona discharge are compared and discussed. It is shown that charges deposited on gas-solid dielectric interfaces reach a steady state after few cycles of the applied triangular ac voltage. The electric field induced by the surface charges modifies the field in the entire system and alter corona characteristics.

space charge

corona discharge

charge deposition

gas-solid interface

ionic drift

electric field


Yuriy Serdyuk

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Martin Macken

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Olof Hjortstam

ABB Corporate Research Center

Birgitta Källstrand

ABB Corporate Research Center

Uno Gäfvert

ABB Corporate Research Center

Markus Saltzer

ABB Group, Sweden

IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2015, Ann Arbor, United States, 18-21 October 2015

0084-9162 (ISSN)





Annan elektroteknik och elektronik