Abstract

In this paper a new parallel resonance Fault Current Limiter (FCL) has been modified in a way that can sustain the magnitude of fault current and control it in a desired value. The operation is based on using parallel L&C resonance circuit with a resistor that reduces transient time and a pair of thyristors for controlling the value of fault current. Injected impedance can be controlled by changing firing angles of thyristors. Simulation with PSCAD/EMTDC software shows effectiveness of this topology for controlling fault current.

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