High voltage direct current circuit breaker arrangement and method
AssigneeABB Technology AG
InventorVictor Lescale
Life of this patent
Estimating the term…
Abstract
A DC circuit breaker arrangement for interrupting a direct current on a line, includes: n DC circuit breakers connected in parallel, where n>2, which parallel connection of DC circuit breakers is connected in series with the line, the direct current of the line being divided between the n DC circuit breakers, and n reactors, each reactor being connected to one of the DC circuit breakers, for preserving the current division during current interruption. A method for interrupting or commutating a direct current on a transmission line or in a HVDC circuit is also provided.
Claims9
A DC circuit breaker arrangement for interrupting a direct current on a line, comprising:
- n DC circuit breakers connected in parallel, where n>2, which parallel connection of DC circuit breakers is connected in series with said line, said direct current of said line being divided between said n DC circuit breakers, and
- n reactors, each reactor being connected to one of the DC circuit breakers, for preserving said current division during current interruption,
- wherein the n reactors as a whole are a plurality of connected transformers and are entirely between two ends of said line, and
- wherein said line is a high voltage DC transmission line or a part of an HVDC circuit.
A DC circuit breaker arrangement for interrupting a direct current on a line, comprising:
- n DC circuit breakers connected in parallel, where n>2, which parallel connection of DC circuit breakers is connected in series with said line, said direct current of said line being divided between said n DC circuit breakers, and
- n reactors, each reactor being connected to one of the DC circuit breakers, for preserving said current division during current interruption,
- wherein the n reactors as a whole are a plurality of connected transformers, and
- wherein said line is a high voltage DC transmission line or a part of an HVDC circuit,
- wherein each of the n DC circuit breakers comprises an interrupter, a resonant LC branch, and a non-linear resistor connected in parallel with said interrupter.
A method for interrupting or commutating a direct current on a line, the method comprising:
- dividing said direct current into n branches, where n>2,
- interrupting said direct current by actuating interrupters arranged at each branch, while preserving, by means of n reactors, each reactor being connected to one of the interrupters, said current division during said current interruption,
- wherein the n reactors as a whole are a plurality of connected transformers and are entirely between two ends of said line, and
- wherein said line is a high voltage DC transmission line or a part of an HVDC circuit.
Dependencies are inferred from the claim text.