DC circuit breaker

Details DC circuit breaker DC circuit breaker

1984-09-21

1986-10-21

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Arc suppression at switching point

361 5, 361 13, H02H 700

Patent

active

046189050

ABSTRACT:
A line voltage charging type DC circuit breaker for use in DC transmission, having a series circuit connected in parallel with a commutation breaker, the series circuit being constituted by a capacitor to be charged by a line voltage, a reactor, and a circuit-closing means connected in series with each other, the DC circuit breaker comprising a circuit for charging the capacitor, the charging circuit including a current direction restricting circuit for restricting a current flowing through the restricting circuit only in one direction and a reverse control circuit for controlling the current direction restricting circuit to reverse the direction of a current for charging the capacitor in accordance with the power flow reversal control of the DC transmission.

REFERENCES:
patent: 4550356 (1985-10-01), Takahashi
patent: 4578730 (1986-03-01), Tokuyama et al.

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