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Shipboard Electrical Power Systems
book

Shipboard Electrical Power Systems

by Mukund R. Patel
December 2011
Intermediate to advanced content levelIntermediate to advanced
370 pages
12h 24m
English
CRC Press
Content preview from Shipboard Electrical Power Systems
Fault Current Analysis 229
(unbalanced) three-phase voltages into three sets of symmetrical (balanced) volt-
ages, one with phase difference of +120° (positive sequence), one with phase
difference of –120° (negative sequence), and one with no phase difference at all
(zero sequence). The resulting three symmetrical component currents are then
determined using the following,
symmetrical component current
symmetrical componen
=
tt voltage
symmetrical component impedance
(9.24)
Unsymmetrical phase currents = Phasor sum of three symmetrical
component currents (9.25)
We give below the nal results for the fault currents in the most frequen ...
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Publisher Resources

ISBN: 9781439828175