ABB says superfast breaker will spur HVDC links

Power giant ABB has unveiled what is billed as the world’s first high-voltage direct current (HVDC) circuit breaker.

The company’s Hybrid HVDC breaker – which marries ultrafast mechanical actuators with semiconductor IGBT valve technology – can interrupt power flows equal to the output of a nuclear power station within five milliseconds, says the Swiss-based group.

The technology will allow variable sources of electricity to be better integrated into operating grids, as well as boosting an HVDC transmission network’s reliability by protecting it from power outages, ABB adds.

The engineering group claims grids built with the new breakers would be able to interconnect and load-balance between HVDC “superhighways”, integrating renewables and…

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