Electricity: electrical systems and devices – Safety and protection of systems and devices – Arc suppression at switching point
Patent
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.
Arimatsu Keiji
Suzuki Koji
Tokuyama Shunji
Gaffin Jeffrey A.
Hitachi , Ltd.
Pellinen A. D.
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