Time-domain temperature variations of a composite insulator surface exposed to arc discharges

Author

Skopec, Adam ; Moron, Leszek ; Zylka, Pawel

Author_Institution

Inst.of Electr. Eng. Fundamentals, Wroclaw Univ. of Technol., Poland

Volume

11

Issue

2

fYear

2004

fDate

4/1/2004 12:00:00 AM

Firstpage

369

Lastpage

377

Abstract

In this paper, a system of equations is presented, which describes time-dependant temperature variations for a dielectric surface exposed to an arc discharge. The formulas are derived for a circular (as well as any-shape) region interacting with the arc discharge. The final set of equations makes it possible to convert temperature values, measured at some depth beneath the sample surface which is exposed to the arc heating, to the corresponding surface temperature values. The theoretical results are verified by measurements according to the IEC 61621 test method, and numerical calculations are done for an epoxy composition that is used in composite insulator manufacturing.

Keywords

arcs (electric); composite insulating materials; composite insulators; epoxy insulators; arc discharges; arc heating; composite insulator manufacturing; composite insulator surface; dielectric surface; epoxy composition; surface temperature; time-domain temperature variations; Arc discharges; Dielectric measurements; Dielectrics and electrical insulation; Equations; Heating; IEC standards; Insulator testing; Surface discharges; Temperature measurement; Time domain analysis;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/TDEI.2004.1285908

Filename

1285908