Fault current limiter

摘要

Provided is a fault current limiter, the limiter including a detector detecting an inflow of a fault current and transmitting a turn-off signal to a power semiconductor element; the power semiconductor element changed to an OFF state by the turn-off signal; and a resistance element connected in parallel to the power semiconductor element to block the fault current.

主权项

1. A fault current limiter, the limiter comprising:
a detector configured to detect an inflow of a fault current, and transmit a turn-off signal to a power semiconductor element and an open signal to a switch in a case where the fault current is introduced; the power semiconductor element changed to an OFF state by the turn-off signal; the switch connected to the power semiconductor element in series and configured to pen a contact point by the open signal, and protect the power semiconductor element against the fault current; a first power fuse connected in parallel to a first serial connection of the power semiconductor element and the switch and configured to temporarily cut off the fault current introduced during occurrence of fault current; a resistance element configured to block the fault current; and second power fuse connected to the resistance element in series to cut off a fault current passing the resistance element, wherein a second serial connection of the resistance element and the second power fuse is connected to the first power fuse in parallel.