An intelligent reluctance network model for the study of large power and distribution transformers

Abstract

This paper deal with the modeling of large power and distribution transformers by means of reluctance network method. It's about a meshed approach that has the flexibility to fit different transformers topologies. The nonlinear behavior and the coupling with the electrical circuit have been considered. The proposed model has the smartness to estimate accurately the appropriate distributions of the MagnetoMotive Forces (MMF) and the ElectroMotive Forces (EMF) even in the case of eventual defects. The model is generated by MatLab and built automatically under EMTP, which is used as a solver. The obtained results are validated with finite element calculations and with measurements.