Effect of PV cells failure on solar power production based on sensitive characteristics deviations

to increase the efficiency and reliability of photovoltaic modules, the implementation of diagnostic and monitoring system is important, and to decrease the produced kwh price, this paper presents a I-V and P-V characteristics of PV panel studying based en Matlab modeling and simulation. An investigation on the ribbon wire state connecting PV cells to each other characterized by series resistance, and the integrity of the semiconductor of the PV cell junction characterized by the parallel resistance. Therefore studying the behavior of the photovoltaic (PV) array under different mentioned degradation and faulty condition.