QUESTION 4 a) The single-line diagram of a three-phase system is shown in figure below. The manufacturer's nominal ratings are given as in table below. Using the common base S, = 60 MVA, draw the impedance diagram in per unit including the load impedance. Voltage base for buses 1, 2, and 3 is 120kV. Transmission lines 1, 2, and 3 have the reactance of 502, 40 2, and 302, respectively. Bus 0 Bus 2 Component S (VA) v (kV) Line 1 X G2 G1 48 MVA 20 kV 22% G2 30 MVA 15 kV 17% Line 2 Line 3 T1 50 MVA 20/110 kV 9% Bus 3 T2 35 MVA 15/110 kV 5% T3 50 MVA 11/110 KV 12% Bus Load

QUESTION 4 a) The single-line diagram of a three-phase system is shown in figure below. The manufacturer's nominal ratings are given as in table below. Using the common base S, = 60 MVA, draw the impedance diagram in per unit including the load impedance. Voltage base for buses 1, 2, and 3 is 120kV. Transmission lines 1, 2, and 3 have the reactance of 502, 40 2, and 302, respectively. Bus 0 Bus 2 Component S (VA) v (kV) Line 1 X G2 G1 48 MVA 20 kV 22% G2 30 MVA 15 kV 17% Line 2 Line 3 T1 50 MVA 20/110 kV 9% Bus 3 T2 35 MVA 15/110 kV 5% T3 50 MVA 11/110 KV 12% Bus Load

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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Single Phase AC Circuit

Alternating Current (AC) is a type of electric power in which the electric current changes, both in magnitude and direction, at regular intervals. This AC Circuits can deliver power in either a Single Phase system or a Three Phase system.

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