Abstract:
Fault is a common term associated with every type of electrical devices under abnormal condition. PV panel faults include installation faults, fault due to environment and material defect or degradation. All these things mainly depend upon the temperature effect and somehow related to the manufacturing defect. So fault analysis in grid connected solar PV system is a primary task to provide reliability and to avoid risks of safety hazards. We have investigated different types of fault occurring in a solar PV system mainly line to ground fault and line to line fault. These two faults mainly decrease the open circuit fault and increase the current feeding to the grid, which in turn affects the efficiency of the system. A simulation with Matlab is carried out to check the performance of the system under different fault condition.

Keywords: Solar cell, MPPT, Reliability