Commutation circuit for an HVDC circuit breaker

Patent · Thu Jan 01 00:00:00 EST 1981

OSTI ID:864041

Premerlani, William J ^[1]

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1. Scotia, NY

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., Boston, MA (United States)
• 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

Related Subjects

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