Automating the analysis of faults and power quality
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An advanced system for automated fault analysis, accurate fault location, and extensive power quality monitoring based on digital fault recorder (DFR) infrastructure is proposed. The automated system for fault analysis was developed using expert system technology. The system is capable of analyzing the DFR data either locally in a substation or in a central location. A variety of communication services are also implemented to facilitate storing, viewing, and distributing of the analysis reports. An algorithm that can be used to synchronize data for accurate fault location is also introduced. Some modifications of the DFRs are required to provide global positioning system (GPS) satellite-controlled sampling of the input data are proposed.