Fault diagnosis method and system for photovoltaic module and processor

The embodiment of the invention provides a fault diagnosis method and system for a photovoltaic module and a processor. The method comprises the following steps: meteorological data information and data information of a photovoltaic array are collected, wherein the photovoltaic array comprises at least one of a photovoltaic module, a combiner box, an inverter and a connecting cable; and fault types are diagnosed according to the data information, wherein the fault types comprise at least one of meteorological station alarm, open circuit faults, short circuit faults and energy efficiency loss. The fault type of the photovoltaic array is diagnosed according to the data information of the photovoltaic array by collecting the data information of the photovoltaic array. According to the invention, the automation of fault diagnosis of the photovoltaic array is realized, manual troubleshooting is not needed, and meanwhile, by collecting data information of the photovoltaic array in real time, faults of the photovolt