Applied Research Of Visual Inspection On Electrical Equipment Of35kV And Below

With the development of modern spectroscopic techniques, the different testingequipments which carried visual detection technology are used in power equipment.With these devices, we can get some spectral informations that can not be seen.Through these informations, we can fully understand the operational status of thepower equipment. We were able to detect latent defects of equipments, so as to avoidthe accidents.This paper presents a visual inspection technology combines X-ray detectiontechnology, infrared detection technology and UV detection technology. Since theX-ray was first used in the inspection of electrical equipment which containing solidinsulating medium. Firstly, the experimental sudy is to verify whether X-rays wouldaffect the solid dielectric. The perspective detection which used different parameters isused in electrical equipment such as transformers, current transformers, insulatingsheath, XLPE cables and dry-type transformers. Through the test we got a reasonableperspective detection parameters for these power devices. In order to verify thepossibility of X-ray detection in these power devices, the two devices from accidentsare tested by perspective detection. It confirmed the validity of the perspectivedetection technology. In the last a comprehensive detection method combinedelectrical insulation testing methods and visualization detection technology is proposed.Verified by specific examples, we can full understanding the running of electricalequipment by using the comprehensive detection method. It provides a new approachand ideas for stateful inspection and life-cycle management of electrical equipment.