A System Independent Setting Based Power Swing Blocking Technique for Transmission Lines

Abstract

In this paper, a system independent setting-based power swing identification and blocking method is presented. The power swing is identified by monitoring the polarity change of superimposed component of voltage signal. The superimposed component is obtained by using a moving window average filter. The proposed method does not require the current signals and it will be suitable to implement for inverter-based resources and weak power systems. The proposed solution is verified with various fault situations. The results confirm that the proposed solution can differentiate between three-phase fault and power swing accurately.