Transformer detection method and device and nonvolatile storage medium

The invention discloses a transformer detection method and device and a nonvolatile storage medium. The method comprises the following steps: acquiring an initial three-dimensional model corresponding to a fin of a transformer; determining a first surface temperature of the fin; based on the initial three-dimensional model, determining a first fin volume corresponding to the first surface temperature of the fin; performing temperature regulation treatment on the fins, and acquiring a first three-dimensional model corresponding to the fins after the first surface temperature is regulated to a preset second surface temperature; based on the first three-dimensional model, determining a second fin volume corresponding to the second surface temperature of the fin; and determining a detection result corresponding to the transformer based on the first fin volume and the second fin volume. According to the invention, the technical problems of low detection coverage rate and poor fault early warning capability of the