DocumentCode
3050271
Title
Dynamic characteristics of high-voltage insulation with metal oxide elements
Author
Nour, H.I.M. ; Sarbaz, F.
Author_Institution
Dept. of Electr. Eng., California State Univ., Long Beach, CA, USA
fYear
1990
fDate
28-31 Oct 1990
Firstpage
575
Lastpage
580
Abstract
The dynamic behavior of an insulation assembly and a metal oxide element is modeled. The multiple arc model, including the characteristics of zinc oxide varistors, was used to evaluate the critical flashover voltage of a dynamic insulator unit. The leakage current through the varistor has the effect of drying the insulator surface, thus increasing the withstand voltage. Nonuniform contamination distribution results in reduction of the critical arc length but has no significant effect on the critical flashover voltage
Keywords
arcs (electric); flashover; insulation testing; insulators; varistors; ZnO; critical arc length; critical flashover voltage; dynamic behavior; high-voltage insulation; insulation assembly; leakage current; metal oxide element; multiple arc model; nonuniform contamination; varistors; withstand voltage; Assembly; Dielectric materials; Dielectrics and electrical insulation; Electric breakdown; Flashover; Pollution; Surface contamination; Surges; Varistors; Zinc oxide;
fLanguage
English
Publisher
ieee
Conference_Titel
Electrical Insulation and Dielectric Phenomena, 1990. Annual Report., Conference on
Conference_Location
Pocono Manor, PA
Type
conf
DOI
10.1109/CEIDP.1990.201311
Filename
201311
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