Method for visually and intelligently identifying internal defects of GIS (Geographic Information System) equipment

The invention relates to a method for detecting internal defects of power equipment, in particular to a method for visually and intelligently identifying internal defects of GIS (Geographic Information System) equipment. The method for visually and intelligently identifying internal defects of the GIS equipment comprises the following steps of: A, detecting a local discharge source of the GIS equipment; B, extracting map characteristics of detected local discharge source data; C, performing visual imaging on a local discharge source area to form an X-ray transillumination picture; D, performing characteristic extraction on the X-ray transillumination picture obtained by using an X-ray digital imaging detection system; E, performing similarity retrieval; and F, determining the properties and positions of internal defects of the GIS equipment according to a similarity retrieval result. According to the method, the properties and positions of the internal defects of the GIS equipment can be identified visually and intelligently, and the scientificity, efficiency and accuracy of the detection and diagnosis of the internal defects of the GIS equipment are increased.