High voltage circuit breakers are important protection and control equipment for the power grid. The defects faults of breaker seriously affect safety stability system. As key component operating mechanism breaker, opening/closing coils contain a large amount information about status mechanism. In order to investigate cause difference in current waveforms, this paper analyzes factors affecting ...

Pyro-breaker, a fast-responding, highly reliable and explosive-driven circuit breaker, is utilized in several Quench Protection Systems (QPS). The commutation process its parameters are the main technical considerations of designing new pyro-breaker. parameters, such as time current change rate, not only determined by electrical but also arc behavior during operation. greatly affected structure...

The protection and current flow regulation of high-voltage direct-current (HVDC) grids requires the deployment additional semiconductor-based equipment including dc circuit breakers (DCCBs) controllers (CFCs). However, inclusion multiple devices could significantly increase total cost an HVDC system. To potentially reduce costs, this paper presents innovative multi-function integrated DCCB (MF-...