Temperature Compensation Method for Infrared Detection of Live Equipment under the Interferences of Wind Speed and Ambient Temperature

Abstract

Infrared thermal imaging technology plays an important role in evaluating the operating condition of electrical equipment. This article focuses on two critical environmental factors, namely, wind speed and ambient temperature. They interfere with infrared detection and fault diagnosis by affecting the actual temperature of the fault area. In this article, we use the principle of heat transfer to explore the affected conditions and the changing laws of diagnostic indicators. We provide a solution for diagnosing the live equipment fault area after compensating for the infrared temperature. Both the simulation and experimental results show that the method can obtain the temperature of the equipment fault area under different environmental conditions for different electrical equipment failures when they meet the temperature compensation conditions. The method can eliminate the influences of wind speed and ambient temperature on the results of infrared temperature measurement and achieve a unified solution to the problem of multiple types of electrical equipment. This breaks through the barriers of infrared temperature measurement applications limited by the on-site environmental conditions. The proposed method can serve to further improve the existing evaluation standards. The results of the article are useful for troubleshooting equipment and improving the accuracy of the infrared diagnosis of live equipment.