High-voltage DC circuit breaker apparatus

Details High-voltage DC circuit breaker apparatus High-voltage DC circuit breaker apparatus

1983-10-12

1986-03-25

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Arc suppression at switching point

361 7, 361 8, 361 14, 361 15, 307126, 200144B, 200146AA, H02H 300

Patent

active

045787301

ABSTRACT:
There is disclosed a high-voltage DC circuit breaker apparatus with reverse current insertion system by line voltage charge, which comprises a commutation switch, a series circuit of a capacitor, a reactor and a switch connected in parallel with the commutation switch, a resistor connected so as to charge the capacitor by a line voltage. The charging time constant of the capacitor determined by the capacity of the capacitor and the resistor is used as a reference in a manner so that the rise time constant of the line voltage is smaller than the charging time constant of the capacitor, and the rise time constant of the line current is larger than the charging time constant of the capacitor, thereby interrupting the fault current without fail.

REFERENCES:
patent: 3879647 (1975-04-01), Hamilton et al.
patent: 4172268 (1979-10-01), Yanabu et al.
patent: 4180852 (1979-12-01), Koizumi et al.
patent: 4442469 (1984-04-01), Yanabu et al.
"Theory and Application of the Commutation Principle for H.V.D.C. Circuit Breakers" by A. N. Greenwood, et al.; I.E.E.E. PAS vol. 91, No. 4, 1972 pp. 1570-1574.

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