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Commutation circuit for an HVDC circuit breaker

Patent ·
OSTI ID:864041
 [1]
  1. Scotia, NY
+ Show Author Affiliations

A commutation circuit for a high voltage DC circuit breaker incorporates a resistor capacitor combination and a charging circuit connected to the main breaker, such that a commutating capacitor is discharged in opposition to the load current to force the current in an arc after breaker opening to zero to facilitate arc interruption. In a particular embodiment, a normally open commutating circuit is connected across the contacts of a main DC circuit breaker to absorb the inductive system energy trapped by breaker opening and to limit recovery voltages to a level tolerable by the commutating circuit components.

Research Organization:
General Electric Co
Sponsoring Organization:
USDOE
DOE Contract Number:
AC01-76ET29054
Assignee:
General Electric Company (Schenectady, NY)
Patent Number(s):
US 4300181
OSTI ID:
864041
Country of Publication:
United States
Language:
English

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Commutation circuit for an HVDC circuit breaker
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Related Subjects

/361/
absorb
breaker
capacitor
charging
charging circuit
circuit
circuit breaker
circuit component
circuit components
circuit connected
combination
commutating
commutating capacitor
commutation
commutation circuit
components
connected
contacts
current
dc
dc circuit
discharged
embodiment
energy
facilitate
force
hvdc
incorporates
inductive
interruption
level
limit
load
load current
main
normally
opposition
particular
particular embodiment
recovery
resistor
resistor capacitor
tolerable
trapped
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voltage dc
voltages
zero