Title :
Simulation and Measurement of Lightning-Impulse Voltage Distributions Over Transformer Windings
Author :
Smajic, Jasmin ; Steinmetz, Thorsten ; Ruegg, Martin ; Tanasic, Zeljko ; Obrist, R. ; Tepper, J. ; Weber, Bruce ; Carlen, M.
Author_Institution :
Univ. of Appl. Sci. of Eastern Switzerland, Rapperswil, Switzerland
Abstract :
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.
Keywords :
differential equations; electric fields; equivalent circuits; lightning; magnetic fields; transformer windings; voltage measurement; circuit differential equations; dry-type transformer windings; electric field simulations; equivalent circuit; high-frequency modeling; lightning-impulse generator; lightning-impulse voltage distributions measurement; lightning-impulse voltage distributions simulation; magnetic field simulations; nondestructive low-voltage measurement system; parameter extraction; transformer windings; voltage distribution; winding system; Analytical models; Computational modeling; Integrated circuit modeling; Mathematical model; Numerical models; Voltage measurement; Windings; Coils; electromagnetic modeling; impulse testing; numerical simulation; transformers; transients;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2013.2283061
