The characteristics of the high-speed vacuum circuit breaker and its application

Author

Niwa, Yoshimitsu ; Funahashi, Takumi ; Yokokura, Kunio ; Kaneko, Eiji

Author_Institution

Power & Ind. Syst. R&D Center, Toshiba Corp., Tokyo, Japan

Volume

3

fYear

2002

fDate

6-10 Oct. 2002

Firstpage

1786

Abstract

The authors have investigated a high-speed vacuum circuit breaker, which forced a fault current to zero. A high frequency current was superimposed on a vacuum interrupter so that the current at the interrupter was forced to zero and the current was interrupted. They investigated experimentally the characteristics of its interruption ability. The arcing time of the high-speed vacuum circuit breaker is shorter than that of a conventional circuit breaker. They observed the arc behavior of the test electrode immediately after the contact separation. They also investigated the effect of high speed interruption for a high speed vacuum circuit breaker applications. The results demonstrate the interruption ability, the arc behavior and the good performance of the high-speed vacuum circuit breaker for the protection of power system equipment.

Keywords

circuit-breaking arcs; fault currents; power system faults; power system protection; switchgear testing; vacuum circuit breakers; vacuum interrupters; application; arcing time; characteristics; contact separation; fault current; high speed interruption; high-speed vacuum circuit breaker; interruption ability; power system equipment protection; test electrode; vacuum interrupter; Circuit breakers; Circuit faults; Circuit testing; Electrodes; Fault currents; Frequency; Interrupters; Turbines; Vacuum arcs; Vacuum systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Transmission and Distribution Conference and Exhibition 2002: Asia Pacific. IEEE/PES

Print_ISBN

0-7803-7525-4

Type

conf

DOI

10.1109/TDC.2002.1177726

Filename

1177726