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Title: Commutation circuit for an HVDC circuit breaker

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.
Authors:
 [1]
  1. (Scotia, NY)
Publication Date:
OSTI Identifier:
864041
Report Number(s):
US 4300181
DOE Contract Number:
AC01-76ET29054
Resource Type:
Patent
Research Org:
General Electric Co
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
commutation; circuit; hvdc; circuit; breaker; commutation; circuit; voltage; dc; circuit; breaker; incorporates; resistor; capacitor; combination; charging; circuit; connected; main; breaker; commutating; capacitor; discharged; opposition; load; current; force; current; breaker; zero; facilitate; interruption; particular; embodiment; normally; commutating; circuit; connected; contacts; main; dc; circuit; breaker; absorb; inductive; energy; trapped; breaker; limit; recovery; voltages; level; tolerable; commutating; circuit; components; charging circuit; circuit component; voltage dc; particular embodiment; circuit connected; circuit breaker; circuit breaker; circuit breaker; circuit components; load current; commutation circuit; commutation circuit; resistor capacitor; commutating capacitor; dc circuit; dc circuit; dc circuit /361/