Review: Different Techniques for Solar PV Array Fault Diagnosis and Classification

Solar energy is that the foremost thick, inexhaustible and cleans of all renewable energy resources. Interest in electrical solar PV power generation has accumulated in recent years thanks to its advantages. This wide distribution of power phenomenon panel production was not followed by observance, fault detection and designation functions to verify higher gain. Faults in any parts (modules, affiliation lines, converters, inverters, etc.) of electrical phenomenon systems (stand-alone, grid-connected or hybrid PV systems) will seriously have an effect on the potency, energy yield likewise because the security and reliableness of the whole PV plant, if not detected and corrected quickly. Additionally, if some faults persist (e.g. arc fault, ground fault and line-to-line fault) they will cause risk of fireside. Fault detection and diagnosing strategies are indispensable for the system reliableness, operation at high potency, and safety of the PV plant. During this paper, the categories and causes of PV systems failures are given, then totally different strategies planned in literature for Fault detection and diagnosing of PV systems are reviewed and discussed; notably faults occurring in PV arrays. Special attention is paid to strategies that may accurately discover, localize and classify doable faults occurring during a PV arrays. The benefits and limits of Fault detection and diagnosing strategies in terms of practicable, complexity, cost-effectiveness and generalization capability for large-scale integration are highlighted.