Two voltage phasors of a three-phase unbalanced supply are measured as Va = 21620°, Vb = 2382-112. There are no zero sequence components in the three-phase supply. (a) Determine the voltage unbalance factor (VUF) using the IEEE definition. (b) Determine the ß and then calculate the VUF using the IEC method-1. (c) Calculate V-, V+ and then calculate the VUF using the IEC method-2 and compare with the IEC method-1.

Two voltage phasors of a three-phase unbalanced supply are measured as Va = 21620°, Vb = 2382-112. There are no zero sequence components in the three-phase supply. (a) Determine the voltage unbalance factor (VUF) using the IEEE definition. (b) Determine the ß and then calculate the VUF using the IEC method-1. (c) Calculate V-, V+ and then calculate the VUF using the IEC method-2 and compare with the IEC method-1.

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

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.23P: A single-phase source has a terminal voltage V=1200volts and a currentI=1530, which leaves the...

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