Temperature Rise Test and Thermal-Fluid Coupling Simulation of an Oil-Immersed Autotransformer Under DC Bias
Loss and temperature increase due to DC bias occurring in power transformers may lead to damage and reduced lifespan.To study the influence of different levels of DC bias on the temperature rise in transformer structural components, 0, 8, and 16 A DC were introduced into the MV side of a test transformer.A 2D axisymmetric finite element model was a