Low-voltage distribution meter box line and meter box fault hidden danger identification method

The invention relates to the technical field of power grids, in particular to a low-voltage distribution meter box line and meter box fault hidden danger identification method. The method comprises the following steps that: S1, low-voltage users are divided into three types according to the phases of three phases of a transformer area; S2, the voltage data of users in each phase are analyzed; S3,the number of abnormal points is determined, and if the number of the abnormal points is smaller than a first set threshold value, the method enters step S4, otherwise, the method enters step S6; S4,the correlation degree between the historical voltage measurement data of the abnormal users is extracted; S5, if the correlation degree is larger than a second set threshold value, it is judged thata meter box line breaks down, and otherwise, it is judged that a meter box breaks down; S6, the users are clustered into classification clusters of which the number is automatically determined; S7, the number of the clustering