Intrinsic-like surface flashover voltage of insulators

Author

Jie Cheng ; Jiancang Su ; Xibo Zhang ; Bo Zeng ; Xiaolong Wu ; Liming Wang ; Jinpeng Fang ; Xiyuan She

Author_Institution

Sci. & Technol. on High Power Microwave Lab., Northwest Inst. of Nucl. Technol., Xi´an, China

Volume

22

Issue

2

fYear

2015

fDate

Apr-15

Firstpage

1009

Lastpage

1014

Abstract

The parameter for indicating the characteristics of the surface flashover voltage in vacuum is studied. Experiment results show that, compared with another conditioning method, the flashover voltages of ablative materials obtained by the multi-round stepped increasing voltage method (termed MRSIVM) are increased by 100-200%. This flashover voltage is defined as the intrinsic-like surface flashover voltage (termed ILSFV). The mechanism and significance of ILSFV are studied. After the testing process of MRSIVM, dielectric surface achieves a relatively stable state and the influence of random factors is reduced. The amplitude of ILSFV is higher and the scatter of that is smaller. In addition, the ILSFV stands for an attainable insulation level. So it is more appropriate to represent the surface flashover characteristic of the insulating material by ILSFV.

Keywords

flashover; insulators; vacuum insulation; ILSFV mechanism; MRSIVM testing process; ablative materials; conditioning method; dielectric surface; insulating material; insulators intrinsic-like surface flashover voltage; multiround stepped increasing voltage method; vacuum; Breakdown voltage; Flashover; Insulators; Surface contamination; Water; Intrinsic-like surface flashover voltage; Mechanisms of conditioning; Multi-round stepped voltage increasing method; Surface flashover in vacuum;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/TDEI.2015.7076802

Filename

7076802