Voltage sag index calculation: Comparison between time-domain simulation and short-circuit calculation
Journal article, 2008

This paper describes a case study where voltage sags indices are estimated using Monte Carlo approach combined with ATP (Alternative Transient Program) and short-circuit calculation program. Voltage sag magnitude and frequency are used to evaluate the correlation between both programs. The results indicate that time-domain simulation and short-circuit calculation gives similar voltage sag indices. Considering the high correlation between the results, short-circuit calculation programs are preferable over the time-domain simulation tools as the modelling for time-domain simulation is more complex, time consuming, and rarely covers the whole network. (C) 2007 Elsevier B.V. All rights reserved.


power quality


voltage sag (dip)


J. M. Carvalho

Universidade Federal de Itajuba

Roberto Chouhy Leborgne

Chalmers, Energy and Environment, Electric Power Engineering

P. M. da Silveira

Universidade Federal de Itajuba

M. H. J. Bollen

Electric Power Systems Research

0378-7796 (ISSN)

Vol. 78 4 676-682

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering



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