Research on 750kV vacuum circuit breaker composed of several vacuum interrupts in series
The paper first introduced the recent research work on super high voltage vacuum circuit breakers (VCB) in China and abroad. It proposed that the research and fabrication of supper high voltage VCB should be accelerated in China to meet the demands of developing 750kV super high voltage power systems. The advantage and significance of applying several vacuum interrupters in series as a super high voltage VCB were stated. The theoretical analysis and experimental test were also conducted to a several single-break vacuum interrupters in series as a super high voltage VCB.