Analysis of ultraviolet imaging detection in external detection of substation equipment

In the whole power system, the external insulation equipment is one of the important components, scattered in the entire power grid. However, because the external insulation of high-voltage electrical equipment is exposed to outdoor for a long time, it is easy to be affected by industrial pollution, natural ash, rain and other factors, making the external insulation surface often contact the dirt to form the dirty layer and inducing discharge phenomenon. If not found in time, it is very easy to cause a power failure. In order to avoid the occurrence of such problems, XJ substation is taken as the research object, and ultraviolet imaging detection technology is used to carry out empirical research. The results show that the transmission lines of XJ Substation have dirty discharge behavior in January 2021, and the insulation status of power equipment is accurately evaluated, which provides a scientific basis for the actual strategy making.