Simulation and Measurement of Lightning-Impulse Voltage Distributions Over Transformer Windings

• Published in: IEEE transactions on magnetics Vol. 50; no. 2; pp. 553 - 556
• Main Authors: Smajic, Jasmin, Steinmetz, Thorsten, Ruegg, Martin, Tanasic, Zeljko, Obrist, Roman, Tepper, Jens, Weber, Benjamin, Carlen, Martin
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.02.2014; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Analytical models; Coils; Computational modeling; Cross-disciplinary physics: materials science; rheology; electromagnetic modeling; Exact sciences and technology; impulse testing; Integrated circuit modeling; Magnetism; Materials science; Mathematical model; Numerical models; numerical simulation; Other topics in materials science; Physics; transformers; transients; Voltage measurement; Windings; Coils; transformers; impulse testing; Digital simulation; Modelling; electromagnetic modeling; numerical simulation; Transients; Magnetic properties
• ISSN: 0018-9464; 1941-0069
• DOI: 10.1109/TMAG.2013.2283061

This paper presents: 1) a novel method for accurate high-frequency modeling of dry-type transformer windings based on magnetic and electric field simulations for parameter extraction of the detailed equivalent circuit of the entire winding system; 2) a method for fast and accurate transient solution of the circuit differential equations that describe the voltage distribution over the winding system; 3) an efficient, cheap, and nondestructive low-voltage measurement system based on a self-developed lightning-impulse generator; and 4) verification of the simulation results by comparison with measurement.