A coupled electromagnetic transformer model for the analysis of winding inter-t...

• Author(s): Oliveira, L. M. R. ; Cardoso, A. J. Marques
• Date: 2001
• Persistent ID: http://hdl.handle.net/10400.1/4048
• Origin: Sapientia - Universidade do Algarve
• Subject(s): Transformers; Coupled electromagnetic model; Modelling and simulation
• Document Type: Conference Object
• Language: English

Description

This paper presents the development and implementation of a coupled electromagnetic transformer model for the simulation of three-phase power and distribution transformers affected by the presence of winding inter-turn short-circuits. Generically, the coupled electromagnetic transformer model is based on the simultaneous consideration of both magnetic and electric equivalent circuits. To incorporate the internal faults in this model a suitable equivalent circuit of the faulty winding is proposed. Both simulation and laboratory tests results are presented in the paper, which demonstrate the adequacy of the proposed model.