Study on High Voltage and Large Capacity Vacuum Interrupters

Author

Wu, Junhui ; Yan, Jing ; Zhao, Hongfei ; Ma, Zhiying

Author_Institution

Sch. of Electr. Eng., Xian Jiaotong Univ., Xian

fYear

2006

Firstpage

1

Lastpage

5

Abstract

Because of great harmfulness for greenhouse effect, SF₆ gas has to be limited. It is necessary to develop high voltage vacuum circuit breaker to replace SF₆ circuit breaker. Insulating structure and arc characteristics of vacuum interrupter are the key. For 72.5 kV vacuum interrupter, impulse voltage test is carried to find out factor of effecting on its insulating performance and insulating structure is improved. As a result, a design of 126 kV vacuum interrupter is presented and electric field distribution is calculated. Based on statistical property of breakdown in high voltage vacuum interrupter, its voltage withstand capability is analyzed. The relation between arc voltage and arc current, the influence of gap distance on arc noise is measured on 72.5 kV vacuum interrupter and the experimental results are analyzed.

Keywords

SF₆ insulation; air pollution; electric fields; vacuum arcs; vacuum circuit breakers; vacuum interrupters; SF₆; SF₆ circuit breaker; SF₆ gas; arc current; arc voltage; electric field distribution; greenhouse effect; high voltage vacuum circuit breaker; high voltage vacuum interrupters; impulse voltage test; large capacity vacuum interrupters; voltage 126 kV; voltage 72.5 kV; Breakdown voltage; Circuit breakers; Circuit testing; Current measurement; Impulse testing; Insulation; Interrupters; Noise measurement; Vacuum arcs; Vacuum breakdown; arc characteristics; high voltage; insulating structure; large capacity; vacuum interrupter;

fLanguage

English

Publisher

ieee

Conference_Titel

Power System Technology, 2006. PowerCon 2006. International Conference on

Conference_Location

Chongqing

Print_ISBN

1-4244-0110-0

Electronic_ISBN

1-4244-0111-9

Type

conf

DOI

10.1109/ICPST.2006.321497

Filename

4116305