3 (3T2toMachine 1Machine 2Y ATwo synchronous machines are connected through three-phasetransformers to the transmission line shown in below fig.The ratings and reactancesof the machines and transformers areMachines 1 and 2:100 MVA, 20 kV;X", = X, = X2 == 20%,X, = 4%, X,= 5%%3DTransformers T, and T,:100 MVA, 204/345Y kV;X = 8%On a chosen base of 100 MVA, 345 kV in the transmission-linc circuit the linercactances arc X, X2 = 15% and X, = 50%. Draw cach of thc thrcc scquencenetworks and find the zcro-sequence bus impedance matrix by mcans of the Zpusbuilding algorithm.Find the fault current if L-G fault occurs at the terminals of Machine2.

Answered: Image /qna-images/answer/5a0d6f53-5c40-40a6-b46c-a788f549ef2a.jpg

Answered: (3) 4) to Machine 2 Machine 1 Y A

Engineering

Electrical Engineering

(3) 4) to Machine 2 Machine 1 Y A

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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Concept explainers

KVL and KCL

KVL stands for Kirchhoff voltage law. KVL states that the total voltage drops around the loop in any closed electric circuit is equal to the sum of total voltage drop in the same closed loop.

Sign Convention

Science and technology incorporate some ideas and techniques of their own to understand a system skilfully and easily. These techniques are called conventions. For example: Sign conventions of mirrors are used to understand the phenomenon of reflection and refraction in an easier way.

Question

(3
T2
to
Machine 1
Machine 2
Y A
Two synchronous machines are connected through three-phase
transformers to the transmission line shown in below fig.The ratings and reactances
of the machines and transformers are
Machines 1 and 2:
100 MVA, 20 kV;
X", = X, = X2 =
= 20%,
X, = 4%, X,
= 5%
%3D
Transformers T, and T,:
100 MVA, 204/345Y kV;
X = 8%
On a chosen base of 100 MVA, 345 kV in the transmission-linc circuit the line
rcactances arc X, X2 = 15% and X, = 50%. Draw cach of thc thrcc scquence
networks and find the zcro-sequence bus impedance matrix by mcans of the Zpus
building algorithm.
Find the fault current if L-G fault occurs at the terminals of Machine2.

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