Information acquisition and monitoring system of photovoltaic grid-connected inverter

The invention relates to the field of information acquisition and monitoring of photovoltaic grid-connected inverters, and particularly discloses an information acquisition and monitoring system of a photovoltaic grid-connected inverter. According to the method, the inverter information at the sampling time point is compared with the average value of the inverter information in the monitoring period, the inverter information at the historical sampling time point and the information of other inverters at the sampling time point, whether the collected inverter information is wrong or not is judged, correction is conducted, and the accuracy and reliability of the collected inverter information can be ensured; whether the inverter runs abnormally is judged by acquiring the voltage and current numerical value fit degree, the voltage and current fluctuation degree, the conversion efficiency, the power factor, the conversion loss percentage and the output waveform distortion degree of the inverter and acquiring the