Evolution From Cathode-Initiated to Anode-Initiated Flashover in Vacuum

Author

Guo-Qiang Su ; Yan Lang ; Jiang-Yang Zhan ; Bai-Peng Song ; Guan-Jun Zhang ; Feng Li ; Meng Wang

Author_Institution

State Key Lab. of Electr. Insulation & Power Equip., Xi´an Jiaotong Univ., Xi´an, China

Volume

42

Issue

10

fYear

2014

fDate

Oct. 2014

Firstpage

2576

Lastpage

2577

Abstract

This paper presents experimentally flashover evolution initiated from cathode to anode via an intensified charge-coupled device camera under the condition of adjusting electric field distribution. These results suggest that a flashover process across insulator surface in vacuum is greatly affected by the local electric field at both cathode and anode triple junctions. Flashover can be initiated at either cathode or anode. This paper might be helpful to clarify the dispute about how the flashover is actually initiated.

Keywords

anodes; cathodes; flashover; plasma diagnostics; surface discharges; anode triple junction; anode-initiated flashover; cathode triple junction; cathode-initiated flashover; charge-coupled device camera; electric field distribution; flashover process; insulator surface; local electric field; Anodes; Cathodes; Discharges (electric); Flashover; Insulators; Surface discharges; Flashover initiation; plasma; surface discharge; vacuum; vacuum.;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2014.2312724

Filename

6782676