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High voltage direct current (HVDC) circuit breakers are a key technology to enable fault management for multi terminal DC (MTDC) networks. DC circuit breakers using superconductors for current limiting have been proposed previously and experimentally tested at low voltage levels. Superconductor materials are ideal for DC networks: they do not incur losses operating with pure DC current. This paper...
The DC circuit breaker (DCCB) is an important component in future super DC grids to isolate a DC fault. Its requirements, during pole-to-ground and pole-to-pole fault conditions, are addressed in this paper, based on a three-terminal HVDC link. In the event of a pole-to-ground fault, DC cables and transformers are exposed to significant DC stresses. However, the converter arm currents and DC current...
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