Stevenson J. Power system analysis
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CONTEN'fS
Preface
1
Basic Concepts
1.1
Introduction
1.2
Single-Subscript NO{dtioll
1.3
Double-Subscript Notation
1.4
Power in Single-Phase AC Circuits
1.5
Complex Power
1
.6
The Power Triangle
1.7
Direction of Power flow
1.8
Vol
tage anc1 Current in BalanccJ Three-Phase Circuits
1.9
Power in Balllnccu Three-Phase Circuits
1.10
Per-Unit Qualltities
1.11
Changing the B,lse of Per-Unit OU(lntities
I.J2
Node Equations
1.13
The Single- Line or One-Line Diagram
1.14
Impedance and Reactance Diagrams
US
Summary
Problems
2 Transformers
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
2.11
The Ideal Transformer
Magnetically Coupled Coils
The Equivalent Circuit of a Single-Phase Transformer
Per-Unit Impedances in Single-Phase Transformer Circuits
Three-Phase Transformers
Three-Phase Transformers: Phase Shift and Equivalent Circuits
The Autotransformer
Per-Unit Impedances of Three-Winding Transformers
Tap-Changing and Regulating Transformers
The Advantages of Per-Unit Computations
Summary
Problems
1
.
.)
4
5
1 0
10
1 J
14
24
25
29
30
34
36
17
37
41
41
46
51
56
59
64
71
72
76
80
82
82
XI
xii
CONTENTS
3
The Synchronous Machine
87
3.1
Description of the Synchronous Machine
88
3.2
Three-Phase Generation
91
3.3
Synchronous Reactance and Equivalent Circuits
100
3.4
Real and Reactive Power Control
105
3.5
Loading Capability Diagram
110
3.6
Thc Two-is Machinc Modcl
117
3.7
Voltagc Equations: Salicnt-Polc Machine
123
3.8
Transient and Subtransicnt Eects
127
3.9
Short-Circuit Currents
132
3.10
Summary
136
Problcms
136
4
Series Impedance of Transmission Lines
141
4.1
Types of Conductors
142
4.2
Resistance
143
4.3
Tabulated Resistance Values
146
4.4
Inductance of a Conductor Due to Internal Flux
146
4.5
Fl
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