Analysis of Arc Suppression Performance of Active Transfer Type Arc Extinguishing Device

摘要

In this paper, considering the influence of line voltage drop, the arc extinguishing performance of the active transfer type arc-extinguishing device is further analyzed. The expression of single-phase ground fault point current is derived by the theory of symmetrical component method. The simulation verified the correctness of the theoretical analysis based on ATP/EMTP. The results show that when the active transfer type arc extinguishing device is applied to long feeders and heavy loads, if a low-resistance ground fault occurs, the current flowing through the ground fault point may increase, which is not conducive to the extinguishing of the arc at the fault point.