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A fault location algorithm based on distributed neutral-to-ground current sensor measurements

This paper presents a study of a multi-grounded three-phase four-wire distribution system and discusses a line-to-ground fault location algorithm based on real time monitoring of current levels in the neutral-to-ground path at several locations throughout the primary feeder. The measurement technique, combined with a triangulation algorithm based on an exponential curve fitting approach, suggests a fault location accuracy of approximately +/- 5 poles.