Temperature Rise Test and Thermal-Fluid Coupling Simulation of an Oil-Immersed Autotransformer Under DC Bias

Reliable Estimation for Health Index of Transformer Oil Based on Novel Combined Predictive Maintenance Techniques

“…The aging characteristics of mineral oil are studied [30]. Further, a temperature rise test is an indicator of thermal severity in power transformers [31]. According to the literature review, most existing DGA techniques can have poor diagnostic accuracy for certain fault types, which in turn can fail to interpret the diverse transformer oil faults.…”