SWITCH FOR TRANSMISSION PATH FOR HIGH-VOLTAGE DIRECT CURRENT

摘要

FIELD: electrical engineering.SUBSTANCE: switch for a high-voltage direct current transmission path includes a vacuum circuit breaker (3) for disconnecting transmission path and a gas-insulated circuit breaker (5) for disconnecting transmission path, gas-insulated circuit breaker (5) is connected in series with vacuum circuit breaker (3). Device (4) is provided for building up a counter-current against current in transmission path for reducing current across vacuum circuit breaker (3).EFFECT: technical result is elements of switch are actuated by a control device in such a way that switch is switched off at or close to zero crossing of current.8 cl, 3 dwg