Simulation analysis of the 126kV three-break vacuum circuit breaker with phase-control method used in capacitive interrupting

In this article, the characteristics of arching and voltage distribution between different fractures as well as over-voltage of capacitor bank is analyzed. The results show that when employing phase-control maneuver, if time dispersion of each fracture is limited in 1.5ms, re-strike can be avoided. The obtained results could help to propose the time dispersion requirement of each break model when using the scheme of series vacuum multi-break interrupting combining with phase-control maneuver.