The figure below shows the one-line diagram of a three-phase power system. By selecting a common baseof 232.9 MVA and 23 kV on the generator side, draw an impedance diagram showing all impedancesincluding the load impedance in per-unit. The data are given as follows: [assume all transformers have thesame connection ^ so neglect the phase shifts associated with the the transformers]T₁25Line 1220 kVLine 2110 kV36T₂T₁4MLoadG:TV. 50 MVA90 MVAT2: 40 MVAT3:7\:M:40 MVA40 MVA66.5 MVA25 KV25/225KV225/11KV25/110KV110/11KV12 KVx = 0.18 per unitx = 0.10 per unitx = 0.06 per unitx = 0.064 per unitx = 0.08 per unit0.185 per unitLines 1 and 2 have a series reactance of 50 and 70 fl, respectively. At bus 4, the three-phase load absorbs 75 MVAat 12 kV and 0.7 power factor lagging.

In this question we need to draw a per unit impedance diagram of the given system.

The figure below shows the one-line diagram of a three-phase power system. By selecting a common base of 232.9 MVA and 23 kV on the generator side, draw an impedance diagram showing all impedances including the load impedance in per-unit. The data are given as follows: [assume all transformers have the same connection^ so neglect the phase shifts associated with the the transformers] G 2 Line 1 220 kV Line 2 110 kV M Load G: TV 90 MVA M: 50 MVA T2: 40 MVA T3: 40 MVA 7: 40 MVA 66.5 MVA 25 KV 25/225 KV 225/11 KV 25/110 KV 110/11 KV 12 KV x= 0.18 per unit x= 0.10 per unit x = 0.06 per unit x = 0.064 per unit x=0.08 per unit x= 0.185 per unit Lines 1 and 2 have a series reactance of 50 and 70 fl, respectively. At bus 4, the three-phase load absorbs 75 MVA at 12 kV and 0.7 power factor lagging.

The figure below shows the one-line diagram of a three-phase power system. By selecting a common base of 232.9 MVA and 23 kV on the generator side, draw an impedance diagram showing all impedances including the load impedance in per-unit. The data are given as follows: [assume all transformers have the same connection^ so neglect the phase shifts associated with the the transformers] G 2 Line 1 220 kV Line 2 110 kV M Load G: TV 90 MVA M: 50 MVA T2: 40 MVA T3: 40 MVA 7: 40 MVA 66.5 MVA 25 KV 25/225 KV 225/11 KV 25/110 KV 110/11 KV 12 KV x= 0.18 per unit x= 0.10 per unit x = 0.06 per unit x = 0.064 per unit x=0.08 per unit x= 0.185 per unit Lines 1 and 2 have a series reactance of 50 and 70 fl, respectively. At bus 4, the three-phase load absorbs 75 MVA at 12 kV and 0.7 power factor lagging.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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