Overview of defect detection techniques for high-voltage cable insulation layer materials

High-voltage cable laying volume increases year by year is the inevitable trend brought about by the development. The insulation performance of the cable insulation layer reacts to whether the cable meets the standard, so the testing of the insulation layer material has an important significance on the safe and stable operation of the cable. This paper first introduces the structure of the cable and the main analysis methods of the insulation layer, focusing on the spectral method. Secondly, this paper summarizes the system structure of infrared spectroscopy in the application of cable insulation layer and the current level of technology. Finally, this paper describes the main problems of the current application of infrared spectroscopy in the cable insulation layer. In summary, infrared spectroscopy has a broad application prospect in cable insulation detection.