Electrical equipment metal surface temperature difference detection method and system

The invention discloses an electrical equipment metal surface temperature difference detection method and system, and the method comprises the steps: building an electrical equipment metal surface visible light image data set of a metal material commonly used by electrical equipment under a reference temperature condition and according to a preset temperature rise step temperature rise condition, and extracting RGB pixel features of corresponding pixels in different temperature regions in an image; combining into a temperature difference characteristic data set, performing compression dimension reduction on the temperature difference characteristic data set to obtain a low-dimensional temperature difference characteristic data set, inputting the low-dimensional temperature difference characteristic data set into a temperature difference identification model based on a machine learning algorithm for training to obtain a trained temperature difference identification model, and performing temperature difference