The line to ground voltages on the high voltage side of a step-up transformer are 100 kV, 33 kV and 38 kV on phases a, b and c respectively. The voltage of phase a leads that of phase b by 100° and lags that of phase c by 176.5°. Determine the symmetrical negative phase sequence component of phase a.

Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter8: Symmetrical Components
Section: Chapter Questions
Problem 8.43P
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The line to ground voltages on the high voltage side of a
step-up transformer are 100 kV, 33 kV and 38 kV on phases
a, b and c respectively. The voltage of phase a leads that
of phase b by 100° and lags that of phase c by 176.5°.
Determine the symmetrical negative phase sequence component
of phase a. 

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