Identification of Construction Defects in 10 kV Cable Intermediate Joints Based on Canny Algorithm

The construction defects of 10 kV cable intermediate joint is easy to cause insulation fault. In order to detect and identify the construction defects of cable intermediate joint quickly and accurately, an edge detection method of Canny operator is proposed. Firstly, the Canny algorithm is used to remove the false edge and highlight the edge information, and the edge information of different parts of the intermediate joint is obtained. The experimental results show that the stains and scratches in the cable main insulation surface defect image detected by the Canny edge detection algorithm have high purity and integrity, and the accuracy of the defect algorithm is more than 90%. The Canny edge detection algorithm improves the intelligence of defect detection and can effectively control the construction quality.