Switching module for use in a device to limit and/or break the current of a power transmission or distribution line

摘要

A switching module, intended to be used in a medium or high voltage DC breaker or a DC current limiter, includes at least one power semiconductor switching element, a gate unit arranged to turn the at least one power semiconductor switching element on and off, respectively, according to a switching control signal, and an energy storage capacitor arranged to provide power to a power supply input of the gate unit. The switching module further includes a power transformation device arranged to receive an optical power signal, to transform the optical power signal into an electrical power signal and to provide the electrical power signal to the energy storage capacitor.

主权项

1. A device to limit and/or break an electrical current flowing through a power transmission or distribution line, the device comprising at least one switching module comprising:
at least one power semiconductor switching element; a gate unit arranged to turn the at least one power semiconductor switching element on and off, respectively, according to a switching control signal; an energy storage capacitor arranged to provide power to a power supply input of the gate unit; a power transformation device arranged to receive an optical power signal that includes an optical information signal, to transform the optical power signal into an electrical power signal that includes an electrical control signal and to provide the electrical power signal to the energy storage capacitor; and a control signal detector connected to the power transformation device and arranged to receive the electrical power signal from the power transformation device, detect the electrical control signal from the electrical power signal, and provide the electrical control signal to the gate unit, wherein the electrical control signal comprises said switching control signal.