Cable insulation early aging positioning method, system, equipment and medium

The invention belongs to the field of cable insulation diagnosis, and particularly discloses a cable insulation early aging positioning method, system and device and a medium. Voltage distribution and leakage current distribution characteristics of an early aging cable are analyzed, and based on the analysis result, the cable insulation early aging positioning method and system are obtained; the monitoring signals with different frequencies can generate different voltage distributions on the cable, so that the leakage current measured at the end part of the cable has special frequency domain distribution, and the multi-mode leakage current variation distribution mode is closely related to the early aging position. According to the early aging positioning method based on the leakage current variation distribution characteristics, the initial decoupling of the aging position and the aging degree can be realized; and on the basis of the common-mode leakage current variable quantity distribution characteristics,