Commutation circuit for an HVDC circuit breaker

Details Commutation circuit for an HVDC circuit breaker Commutation circuit for an HVDC circuit breaker

1979-11-28

1981-11-10

Miller, J. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Arc suppression at switching point

361 8, 361 13, H02H 300

Patent

active

043001815

ABSTRACT:
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.

REFERENCES:
patent: 3435288 (1969-03-01), Greenwood
patent: 3476978 (1969-03-01), Greenwood
patent: 3489918 (1970-01-01), Greenwood
patent: 3489950 (1970-01-01), Mishkovsky
patent: 3489951 (1970-01-01), Greenwood
patent: 3737724 (1973-06-01), Salge
patent: 3739192 (1973-06-01), Oswald
patent: 3753042 (1973-08-01), Kind et al.
patent: 3777178 (1973-12-01), Gratzmuller
patent: 3781606 (1973-12-01), Long et al.
patent: 3786310 (1974-01-01), Long
patent: 3809959 (1974-05-01), Pucher
patent: 3927350 (1975-12-01), McConnell
"Prospects for Multiterminal HVDC Transmission Status of DC Interrupting Devices", G. D. Breuer, 1977.

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