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AssigneeABB Technology AG
InventorsJürgen Häfner, Björn Jacobson, Tomas Jonsson, Kerstin Lindén, Bertil Berggren
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The present invention relates to an HVDC switchyard arranged to interconnect a first part of a DC grid with a second part of the DC grid. By means of the invention, a first part of the DC grid is connected to the busbars of the HVDC switchyard via a fast DC breaker, while further part(s) of the DC grid are connected to the busbars of the HVDC switchyard by means of switchyard DC breakers of lower breaking speed. By use of the inventive HVDC switchyard arrangement, the cost for the HVDC switchyard can be considerably reduced, while adequate protection can be provided. In one embodiment, the fast DC breaker is an HVDC station DC breaker forming part of an HVDC station. In another embodiment, the fast DC breaker is a switchyard DC breaker.
An HVDC switchyard arranged to interconnect a first part of a DC grid with at least one further part of the DC grid, wherein the HVDC switchyard comprises:
An HVDC switchyard system arranged to interconnect a first HVDC station with at least one further HVDC station, the HVDC switchyard system comprising the first HVDC station and an HVDC switchyard, wherein the HVDC switchyard comprises:
Dependencies are inferred from the claim text.