Distribution network voltage data missing filling method and related device

The invention discloses a distribution network voltage data missing filling method and a related device, and the method comprises the steps: carrying out the preprocessing of obtained incomplete voltage data, and obtaining an attribute data set; calculating a cross correlation coefficient between the attribute data through an improved Pearson correlation coefficient method; calculating the corresponding attribute data of which the cross correlation coefficient meets a preset strong correlation condition and a preset weight to obtain a first weighted value, and generating a first weighted sequence; in the historical voltage data set, selecting a plurality of historical time sequences through similarity thresholds; calculating a second weighted value of the corresponding historical attributedata according to each historical time sequence to obtain a plurality of second weighted sequences; and filling the incomplete voltage data through the historical voltage data corresponding to the optimal second weighted seq