Fault detection in GCPV plant using graphical user interface

In this work automatic fault detection software tool is developed by using MATLAB GUI to detect the fault in grid connected pv plant. New procedure for automatic fault detection in GCPV systems is used. This method is based on the evaluation of new current and voltage indicators. Thresholds for these indicators are defined taking into account the PV system configuration: number of PV modules included and series and parallel interconnection to form the array. The procedure to calculate the thresholds that allow the identification of the faults is described. By this method the computational analysis has been reduced and the number of monitoring sensors minimized. For validation of the software tool experimentally data given in the paper is used to get the result. The fault detection procedure can be integrated into the inverter without using simulation software or additional external hardware.