Abstract
Detection of high impedance fault in the distribution system is highly challenging since fault current magnitude is at a negligible quantity that can't be sensed by the protective relays. The majority of the high-impedance faults may be either single-phase to ground faults. It mainly occurs when a highly energized conductor touches an insulating object, such as a tree, building, or falls on ground. Since the conductor remains so active and unaltered, it poses a significant threat to both humankind and wild life. We are still working on finding a total solution, but it is critical that utilities begin to solve the issue now. In this work, wavelet-fuzzy logic technique is employed to real time data obtained form 12.47KV overhead power distribution system and detected the fault successfully. The test results are obtained by MATLAB/SIMULINK. Rules are framed by trial-and-error method. Results shows that proposed method is more efficient in identifying HIF from other events.
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