Infrared Thermographic Testing of some Defects in High Tension Electrical Transformers at Mahmood Shareef Station

Abstract

The aim of this study is to detect some defects of high tension electrical transformers. In this testing infrared cameras were used (thermaCam Sc300) with high sensitivity (0.95) to measure small temperature differences. This inspection performed at night (lower temperature and good vision by infrared camera) to avoid external effects such as sunlight and ambient air temperatures. In this study, the overloading and overtemperature areas in addition to checks for how the cooling is working on transformer and for oil level inside transformer oil tank were Identified.