Considerations on the impact of material mesostructure on charge injection at cable interfaces
Journal article, 2020

In many industrialized high voltage applications, polymeric insulators are subjected to high electric field strength. Examples are cables, gas-insulated switchgears (GIS), capacitors and others [1]. The difficulty in the design process of these components is to ensure and predict their long-term reliability, where one among the important aspects is prevention of local degradation phenomena. Applications in which a combination of different solid dielectric materials are utilized, such as in cable joints or dry-type terminations are also becoming more common in the strive for achieving long lasting and maintenance free components. It is thus crucial that such components are also designed for longevity and faultless operation. This involves ensuring proper physical and chemical cleanliness of the used materials, but also optimizing component geometry with regards to local enhancements of electric field.

roughness enhanced charge injection

roughness

interfaces

multi-scale approach

mesoscopic gap

surface states

charge injection

surface morphology

Author

Espen Doedens

Nexans

E. Markus Jarvid

Nexans

IEEE Electrical Insulation Magazine

0883-7554 (ISSN) 15584402 (eISSN)

Vol. 36 5 43-51 9165698

Subject Categories

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/MEI.2020.9165698

More information

Latest update

10/9/2023