1. A single-phase ring distributor ABCD is fed at A with 6.8-kV source. The loads at B and C and D are: 40 A at 0.8 p.f. lagging, 60A at 0-6 p.f. lagging, and 0 A, respectively. All the power factors are expressed referred to the voltage at point A. The total impedance of sections AB, BC, CD and DA are 2 + j1, 2+ j3, 0.6 + j01.2, and 0.4+j0.8 ohms. respectively. Determine the current in each section of the distributor. Also, find the station bus bar voltages at B, C, and D. Use Thevenin's theorem between B and C terminals for the analysis.

1. A single-phase ring distributor ABCD is fed at A with 6.8-kV source. The loads at B and C and D are: 40 A at 0.8 p.f. lagging, 60A at 0-6 p.f. lagging, and 0 A, respectively. All the power factors are expressed referred to the voltage at point A. The total impedance of sections AB, BC, CD and DA are 2 + j1, 2+ j3, 0.6 + j01.2, and 0.4+j0.8 ohms. respectively. Determine the current in each section of the distributor. Also, find the station bus bar voltages at B, C, and D. Use Thevenin's theorem between B and C terminals for the analysis.

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

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.43P: Three single-phase transformers, each rated 10MVA,66.4/12.5kV,60Hz, with an equivalent series...

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