a) The one line diagram of a three phase system is shown below, draw an impedance diagram showing all impedances in per-unit on a 100 MVA base. b) The motor is drawing 40 MVA at 0.9 power factor lagging at a line- to-line terminal voltage of 10 KV. Determine the terminal voltage of the generator.

a) The one line diagram of a three phase system is shown below, draw an impedance diagram showing all impedances in per-unit on a 100 MVA base. b) The motor is drawing 40 MVA at 0.9 power factor lagging at a line- to-line terminal voltage of 10 KV. Determine the terminal voltage of the generator.

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

Compensation Techniques

The compensation techniques are the methods that are employed in the electrical control systems to enhance the performance of the system. The performance are generally affected by the factors like lag in the compensating devices, slow response of the system of the components like sensors used in the control system. The basic compensation technique involves lag compensation, lead compensation or the combination of the both.

Question

a) The one line diagram of a three phase system is shown below, draw an
impedance diagram showing all impedances in per-unit on a 100
MVA base.
b) The motor is drawing 40 MVA at 0.9 power factor lagging at a line-
to-line terminal voltage of 10 KV. Determine the terminal voltage of
the generator.
T,
т,
x = 48.4 2
50 MVA
100 MVA
11/220 KV
220/11 KV
10%
10%
M
50 MVA
10 KV
18.15 %
80 MVA
11 KV
20 %
50 MVA
250/10 KV
9.68 %
1.5488 + j0.7744 2
X, = 58.08 2
= 45.98 N

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