A New Algorithm Of Digital Protection For Shunt Reactors

This paper proposes a new digital protection scheme for shunt reactors. The method proposed here is based on the relationship between flux and current of shunt reactors and simulation results indicate that this type of relay is less affected by inrush phenomena than conventional impedance relays. The selection of cutoff frequency of Low Pass Filter (LPF), sampling interval and integral time is also discussed and their desirable values are estimated from the sensitivity analysis of these parameters.