Novel Topology and Circuit Simulation of a High-Arc-Voltage Hybrid DC Circuit Breaker Based on Series Dielectrics
摘要
To enhance the natural commutation performance of medium-voltage hybrid DC circuit breakers (HDCCB), this paper proposes a novel topology for a high-arc-voltage HDCCB based on series dielectrics (HAV-HDCCB) and analyzes its operating principle concerning current transfer performance. A Simulink circuit model was developed to compare the overall interruption effectiveness between the proposed high-arc-voltage HDCCB and a conventional HDCCB. The results demonstrate a significant reduction in the current transfer time from 2320 μs to 273 μs. Furthermore, the influence of different arc voltages and the number of series/parallel power electronic devices in the transfer branch on the arc current transfer performance was investigated.