Simulation Calculation and Analysis of Stray Loss in Structural Parts of Super Large Capacity Transformer in Power System
In order to study the stray loss characteristics of the structural parts of the super large capacity transformer in the power system,the MagNet electromagnetic simulation software constructs the 2D and 3D models based on the finite element method,and analyzes the distribution law of the stray loss. The accuracy of the simulation results is verified by calculating the distribution of short-circuit impedance and leakage. The finite element method is used to calculate the distribution of short-circuit impedance and leakage by finite element and surface impedance. By comparing the simulation results and experimental results,the simulation loss error of the core,winding,clamp and fuel tank is 1.50％,2.12％,2.11％ and 2.26％ respectively,which verifies the reliability and accuracy of the simulation model. The shielding design results show that the magnetic leakage strength and stray loss are reduced by optimizing the material selection and designing the magnetic shielding structure. It is concluded that the stratification method and the surface impedance method have different advantages and disadvantages. The stratification method has high accuracy but complex calculation,and the surface impedance method has fast calculation speed but low accuracy.
power systemtransformer structural partsstray loss
万方数据
维普
