Abstract: A fault detection assembly for a PV solar generation assembly comprised of an array of PV modules including a plurality of series PV module strings connected in parallel, the fault detection assembly including: a plurality of current sensors arranged to monitor respective string currents of said strings; a processing arrangement in communication with the current sensors for receiving values of the string currents therefrom; a memory device accessible to the processing arrangement containing instructions for execution by the processing arrangement including instructions for: determining a representative string current for currents of the plurality of strings; deeming one or more strings having currents that are outliers to the representative string current by more than a threshold value to be subject to a fault; and issuing an alarm including an identification of the one or more strings deemed to be subject to the fault.

Abstract: A fault detection assembly for a PV solar generation assembly comprised of an array of PV modules including a plurality of series PV module strings connected in parallel, the fault detection assembly including: a plurality of current sensors arranged to monitor respective string currents of said strings; a processing arrangement in communication with the current sensors for receiving values of the string currents therefrom; a memory device accessible to the processing arrangement containing instructions for execution by the processing arrangement including instructions for: determining a representative string current for currents of the plurality of strings; deeming one or more strings having currents that are outliers to the representative string current by more than a threshold value to be subject to a fault; and issuing an alarm including an identification of the one or more strings deemed to be subject to the fault.