Hits:

Indexed by:期刊论文

Date of Publication:2018-01-01

Journal:International Journal of Circuits, Systems and Signal Processing

Volume:12

Page Number:416-422

Abstract:Under the condition of power frequency, the influence of the parasitic inductance in grading capacitor which connects with multi-vacuum interrupters in parallel is negligible, but when the breakers are opened by power grid break down, the TRV (Transient Recovery Voltage) will appear in high frequency, and the influence of the parasitic inductance on TRV will occur. In this paper, the model of post arc resistance will be established within the research of VCB (Vacuum Circuit Breaker) with triple-interrupters as background, then do simulation on the effect on TRV with different parasitic inductance value by ATP DRAW. When the inductance value is lower than 13µH, the wave form of TRV can be seen as sinusoidal variation, and when the inductance value is higher than 13µH, it can be seen as linear variation with the increase of inductance. As the inductance increased, the influence of voltage sharing is not obvious, but because of the existence of the parasitic inductance, there are inhibitory effects for the rate of TRV in 4µs after the interrupter breaking. At last, the module of VCB with triple interrupters is established, and the correctness of simulation results is proved by experiments. © 2018, North Atlantic University Union. All rights reserved.