| Title |
A Study on Arc Conductance of Puffer Type SF6 GCB at Current Zero Period |
| Authors |
정진교(Chong, Jin-Kyo) ; 송기동(Song, Ki-Dong) ; 이우영(Lee, Woo-Young) ; 김규탁(Kim, Gyu-Tak) |
| Keywords |
SF_6 Gas Circuit Breaker ; simplified synthetic test facility ; Current Zero Period ; Arc Conductance |
| Abstract |
The SLF(Short Line Fault) breaking capability test for high voltage class SF_6 GCB(Gas Circuit Breaker) was conducted. Simplified LC resonant circuit test facility was used for SLF breaking test. During test, Test current was measured by Rogwski coil and arc voltage was measured by voltage divider. Arc conductance was calculated by using these test results before 200ns at current zero. Critical arc conductance value at rated voltage 145kV class is about 2.3mS regardless of breaking current magnitude and arc conductance value at rated voltage 170kV class is about 2.6mS. |