Differences in voltage dip exposure depending upon phase-to-phase and phase-to-neutral monitoring connections
Artikel i vetenskaplig tidskrift, 2007

Voltage dip indices are estimated for a set of simulated and measured events. The simulated dips are obtained applying the method of fault positions on a large transmission network and the measured dips come from a one-year survey. The indices estimated to compare phase-to-phase and phase-to-neutral dips are SARFI-90, SARFI-70, SARFI-ITIC and average voltage dip amplitude. Furthermore, the results are analyzed in terms of the cumulative distribution frequency of the voltage dip amplitude. The comparison of phase-to-phase and phase-to-neutral indices indicates that, at transmission level, phase-to-neutral dips are more frequent and more severe than phase-to-phase ones. However, these differences are reduced at the load connection level, where the phase- and line-voltages show similar performance for the monitored system.

power quality

method of fault positions


power system measurements and voltage dips (sags).


Roberto Chouhy Leborgne

Chalmers, Energi och miljö, Elkraftteknik

Gabriel Olguin

ABB Corporate Research Center

José Maria Carvalho Filho

Universidade Federal de Itajuba

Math H.J. Bollen

Luleå tekniska universitet

IEEE Transactions on Power Delivery

0885-8977 (ISSN)

Vol. 22 2 1153-59


Elektroteknik och elektronik

Annan elektroteknik och elektronik



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