Simulation Analysis of Electromagnetic Field of Oil-Immersed Power Transformer

With the application and development of transformer in power system, its electromagnetic characteristics become one of the hot issues. In order to further study the electromagnetic distribution characteristics of transformer core under no-load condition, this paper analyzes the mathematical model of transformer electromagnetic field simulation, establishes the three-dimensional electromagnetic field simulation model, and calculates the electromagnetic distribution characteristics of transformer core. The simulation results show that: under no-load transformer condition, the maximum voltage values of three-phase winding A, B and C on the low voltage side of the transformer are respectively about 325 V, 322 V and 326 V, and the maximum voltage values of the three-phase winding on the high voltage side are respectively 8134 V, 7985 V and 8402 V. The maximum magnetic induction intensity of transformer A, B and C three-phase core is 1.72T, 1.78T and 1.78T respectively.