Experimental investigation on the characteristics of vacuum arc in the process of DC interruption based on artificial current zero

Author

Song, Xiaochuan ; Shi, Zongqian ; Liu, Chang ; Yang, Hongyi ; Ma, Ming ; Jia, Shenli ; Wang, Lijun

Author_Institution

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

fYear

2010

fDate

Aug. 30 2010-Sept. 3 2010

Firstpage

293

Lastpage

296

Abstract

The characteristics of vacuum arc in the process of DC interruption based on artificial current zero is investigated experimentally in this paper. A detachable vacuum chamber was used as the main switch. The countercurrent with frequency of 1kHz supplied by an LC circuit was injected by a thyristor. The shape of arc column was investigated with the aid of a high speed digital camera with an exposure time of 2 microseconds. The influence of axial magnetic field distributions on the characteristics of vacuum arc, particularly, on its evolution in initial drawn arc stage, was mainly investigated. The appearance of arc column during the interruption current falling to zero was also investigated.

Keywords

cameras; circuit-breaking arcs; magnetic fields; thyristors; vacuum arcs; DC interruption; LC circuit; arc column; artificial current zero; axial magnetic field distributions; detachable vacuum chamber; frequency 1 kHz; high speed digital camera; thyristor; time 2 mus; vacuum arc; Bridge circuits; Cathodes; Magnetic fields; Metals; Plasmas; Vacuum arcs;

fLanguage

English

Publisher

ieee

Conference_Titel

Discharges and Electrical Insulation in Vacuum (ISDEIV), 2010 24th International Symposium on

Conference_Location

Braunschweig

ISSN

1093-2941

Print_ISBN

978-1-4244-8367-9

Electronic_ISBN

1093-2941

Type

conf

DOI

10.1109/DEIV.2010.5625874

Filename

5625874