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Transients detection and classification in distribution networks for high impedance faults identification

Protection systems used in distribution networks are not able to detect short circuits with high contact resistance due to reduced currents generated, endangering the population and degrading the quality of the energy supplied. In this sense, this paper presents a new technique for detecting high impedance faults (HIF). The major advantage of this method is the not needing of additionally equipment installation in the distribution network, which reduces the cost of its implementation. Moreover, the proposed methodology is immune to any electrical transients generated in the system, such as capacitor bank switching, power transformers and inputs and output loads.