Configuration effect on DC flashover on polluted insulators

Author

Zhang, Rongting ; Zhu, Dalong ; Wang, Zhen

Author_Institution

Dept. of Electr. Eng., Tsinghua Univ., Beijing

Volume

25

Issue

3

fYear

1990

fDate

6/1/1990 12:00:00 AM

Firstpage

575

Lastpage

581

Abstract

DC pollution discharge phenomena and flashover voltages of models made of glass plates, simulating a real insulator of the cap and pin type, were observed and measured. The influence of the main dimensions, such as the distance between sheds, the height of ribs, the width of ditches and the diameter of the disk, on the DC pollution flashover voltages of insulators is investigated and discussed. Some useful results are obtained relating to the prevention of bridging over clearances by local arcs and the improvement of the withstand voltage per unit leakage distance. Based on these results, suggestions for the rational design of DC insulators are presented

Keywords

arcs (electric); flashover; insulators; DC flashover; DC insulators; DC pollution discharge phenomena; bridging; cap and pin type; ditches; glass plates; local arcs; polluted insulators; rational design; ribs; sheds; withstand voltage; Dielectrics and electrical insulation; Flashover; Glass; Helium; Insulator testing; Pollution; Power transformer insulation; Ribs; Surface contamination; Voltage;

fLanguage

English

Journal_Title

Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

0018-9367

Type

jour

DOI

10.1109/14.55734

Filename

55734