Resumen de Determining pf the fault location in distribution systems in presence of distributed generation resources using the original post phasors
Saeed Talati, Behzad Ebadi, Houman Akbarzade
. In this paper a method for determining the fault location in distribution systems in presence of distributed generation resources is presented. Methodology. In presented method the section which has fault in distribution system gets identified and the distance of fault location from the original post gets calculated by recording the phasors of voltage and current in original post and analyzing the Circuits sequence of positive, negative and zero of system, the section which have fault in distribution system is determined and the distance of fault place from original post gets calculated. Results. The suggested method is applicable in distribution systems which have diffused generation source with high penetration level and the different values of fault resistance. In operating defense by the time of crisis and occurring fault in distribution system of the power of centers considering that for making the time of power outage minimum in sensitive centers the emergency generators are needed, also a quick trouble shooting system is needed to make the place of fault clear and start to repair it in least possible time and carefully. The obtained results of investigating the variety of faults over system in presence of distributed generation resources shows the efficiency of suggested method. Originality.A novel fault location and protection scheme are presented to provide the distribution networks with distributed generation (DG). The suggested approach is able to determine the accurate type and location of faults in presence of distributed generation resources using the original post phasors. Practical value. Consequently, determining the accurate location of probable faults will be more important in distribution systems including DG. For simulating, the intended method over a sample distribution system is done by EMTP software. For processing and analyzing the information the MATLAB software is used.
