Ultrafast disconnector for hybrid HVDC circuit breaker

摘要

Any electrical system has tobe able to handle faults bydisconnecting the fault andisolating just as much of thepower system as it needs to. With to-day’s HVDC point-to-point transmissionlines, AC breakers at each end can takeup this task ? 3. However, HVDC sys-tems will increasingly be configured ingrids and using the AC breakers to clearfaults would cause the loss of the entiregrid ? 4. Further, HVDC faults have to becleared in a few milliseconds, much fast-er than in a corresponding AC system.