Electrical Defect Detection in Thermal Image

Abstract

Electrical and Electronic objects, which have a temperature of operating condition above absolute zero, emit infrared radiation. This radiation can be measured on the infrared spectral band of the electromagnetic spectrum using thermal imaging. Faults on electrical systems are expensive in terms of plant downtime, damage, loss of production or risk from fire. If the threshold temperature is timely detected, the electrical equipment failures can be avoided. This paper presents a straightforward approach for thermal analysis that examines power loads and large area thermal characteristics. A thermal imaging camera was used to collect thermal pictures of the tested system under various operating conditions. These pictures are analyzed using thermal diagnosis system in order to detect the fault location that may occur and improve inspection efficiency.

Thermal Defect Analysis on Transformer Using a RLC Network and Thermography

“…This can be figured out using delta T criteria (∆T) [4], which are of two folds first: The thermal value of equipment without thermal fault considered as reference point is compared with other ensemble equipment having similar load and similar environment condition [5]. Next is where thermal variation (∆T) of electrical equipment is compared between equipment and its ambient temperatures [6,7]. In RLCTN, various thermal nodes will be examined and analyzed with respect to time until stability is maintained at certain thermal threshold value.…”