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Scilab Textbook Companion for
Electrical Power Systems
by C. L. Wadhwa1
Created by
Anuj Bansal
B.E
Electrical Engineering
Thapar University, Patiala(Punjab)
College Teacher
Dr. Sunil Kumar Singla
Cross-Checked by
Lavitha Pereira
July 13, 2017
1 Funded
by a grant from the National Mission on Education through ICT,
http://spoken-tutorial.org/NMEICT-Intro. This Textbook Companion and Scilab
codes written in it can be downloaded from the ”Textbook Companion Project”
section at the website http://scilab.in
Book Description
Title: Electrical Power Systems
Author: C. L. Wadhwa
Publisher: New Age International Pvt. Ltd., New Delhi
Edition: 6
Year: 2010
ISBN: 9788122428391
1
Scilab numbering policy used in this document and the relation to the
above book.
Exa Example (Solved example)
Eqn Equation (Particular equation of the above book)
AP Appendix to Example(Scilab Code that is an Appednix to a particular
Example of the above book)
For example, Exa 3.51 means solved example 3.51 of this book. Sec 2.3 means
a scilab code whose theory is explained in Section 2.3 of the book.
2
Contents
List of Scilab Codes
4
1 FUNDAMENTALS OF POWER SYSTEMS
5
2 LINE CONSTANT CALCULATIONS
7
3 CAPACITANCE OF TRANSMISSION LINES
12
4 PERFORMANCE OF LINES
14
5 HIGH VOLTAGE DC TRANSMISSION
25
6 CORONA
28
7 MECHANICAL DESIGN OF TRANSMISSION LINES
32
8 OVERHEAD LINE INSULATORS
36
9 INSULATED CABLES
37
10 VOLTAGE CONTROL
43
11 NEUTRAL GROUNDING
47
12 TRANSIENTS IN POWER SYSTEMS
49
13 SYMMETRICAL COMPONENTS AND FAULT CALCULATIONS
54
14 PROTECTIVE RELAYS
69
3
15 CIRCUIT BREAKERS
76
17 POWER SYSTEM SYNCHRONOUS STABILITY
80
18 LOAD FLOWS
90
19 ECONOMIC LOAD DISPATCH
97
20 LOAD FREQUENCY CONTROL
100
21 COMPENSATION IN POWER SYSTEMS
102
22 POWER SYSTEM VOLTAGE STABILITY
104
23 STATE ESTIMATION IN POWER SYSTEMS
108
24 UNIT COMMITMENT
113
25 ECONOMIC SCHEDULING OF HYDROTHERMAL PLANTS
AND OPTIMAL POWER FLOWS
116
4
List of Scilab Codes
Exa 1.1
Exa 2.2
Exa 2.3
Exa 2.4
Exa 2.5
Exa 2.6
Exa 2.7
Exa
Exa
Exa