Low-voltage transformer area user-transformer relation error correction and phase identification method

The invention relates to the technical field of power grids and relates to a low-voltage transformer area user-transformer relation error correction and phase identification method. The method comprises the following steps of: inputting historical voltage data of all single-phase users in a transformer area and corresponding acquisition moments according to the residence numbers of users; performing analysis based on the historical voltage data of the users in the same transformer area, and extracting the correlation degree between the historical voltage data of the users in the same transformer area by adopting a Pearson correlation coefficient; calculating the correlation feature vector of each user, and establishing a feature set matrix of a to-be-analyzed transformer area; checking abnormal users according to the voltage features of each user; establishing an original voltage data set of normal users, performing cooperative dimension reduction processing on the data set of the original voltage, and output