Title :
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
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;
Conference_Titel :
Transmission and Distribution Conference and Exhibition 2002: Asia Pacific. IEEE/PES
Print_ISBN :
0-7803-7525-4
DOI :
10.1109/TDC.2002.1178266
