Abstract:Influenced by many factors, such as faults of acquisition equipment, unstable communication channel and external interference, electricity information acquisition system would fail in collecting distributed photovoltaic power generation, which will result in the missing value of distributed photovoltaic power generation. So the analysis based on distributed photovoltaic power generation will be affected, such as distributed photovoltaic power generation forecasting, line loss analysis in the area where distributed photovoltaic is located, etc. To solve the above problem, the inference that the distribution photovoltaic generation curve in the same geographical area has a strong correlation is presented. And the validity of the inference is verified by calculating the correlation coefficient matrix of the weekly power generation curve in a geographical area. Based on this inference, the concept of trend curve of weekly power generation is presented, which can characterize the fluctuation law of distributed photovoltaic power generation curve in a geographic area. Based on the trend curve of weekly power generation, the method for repairing the missing value of distributed photovoltaic power generation in electricity information acquisition system is presented. The validity of the method is demonstrated by calculation examples.