Title :
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
fDate :
4/1/2004 12:00:00 AM
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;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
DOI :
10.1109/TDEI.2004.1285908