Development of 550 kV 63 kA one-break gas circuit breaker

Author

Ochiai, I. ; Kohyama, H. ; Ito, H. ; Hidaka, M. ; Sugiyama, T. ; Yamamoto, H. ; Matuszak, D.

Author_Institution

Mitsubishi Electric Corp., Amagasaki, Japan

Volume

1

fYear

2002

fDate

6-10 Oct. 2002

Firstpage

93

Abstract

The 550 kV one-break gas circuit breaker (GCB) has been developed to meet advanced mechanical and electrical reliability requirements for GCBs. An improvement of the interruption capability reduces the number of break points in the GCB, and also realizes an elimination of the grading capacitor. An application of a synchronous switching scheme eliminates the closing resistor. Introduction of these innovative technologies into the 550 kV GCB realizes a reduction in the number of parts and minimizes the maintenance effort. The reduction of the break points and the reduction of the size of the SF₆ gas enclosure contribute directly to decreased gas usage.

Keywords

SF₆ insulation; gas blast circuit breakers; interrupters; reliability; switching; 550 kV; 63 kA; SF₆; break points; closing resistor elimination; electrical reliability; grading capacitor elimination; interruption capability; mechanical reliability; one-break gas circuit breaker; synchronous switching scheme; Capacitors; Circuit breakers; Contacts; Dielectrics and electrical insulation; Indium tin oxide; Interrupters; Maintenance; Resistors; Sulfur hexafluoride; Switching circuits;

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.2002.1178266

Filename

1178266