Research on the Transformer Load Capacity Evaluation Method Based on Hot Spot Temperature Analysis

The evaluation of transformer load capacity is of great significance to its safe and economical operation. The transformer load capacity is closely related to its hot spot temperature. In this paper, finite element simulation method is used to calculate the transformer hot spot temperature. The temperature field of transformer under different load factors is calculated and the relationship between the transformer load coefficient and the hot spot temperature rise is studied through simulation results, and the load capacity is evaluated according to the temperature rise limit of the transformer.