Method and device for evaluating aging state of insulating material

The invention discloses an aging state evaluation method and equipment for an insulating material, and the method comprises the steps: carrying out the leakage current integration of a to-be-detected insulating material through a current integration charge detection system based on preset test time, and obtaining an integration charge time curve; wherein the current integral charge detection system is obtained based on pre-construction of the test device; based on the integral charge time curve and a preset sampling interval, sampling the accumulated charge quantity to obtain a charge accumulation rate; carrying out backward differential analysis on the charge accumulation rate to obtain a differential value; and performing aging state evaluation on the differential value to obtain an aging state evaluation result of the to-be-tested insulating material. According to the embodiment, the aging state of the insulating material is effectively evaluated, the aging degree in the insulating material is refined, and