Introduction to Electrical Power Systems

by El-Hawary, Mohamed E.

• ISBN13: 9780470408636
• ISBN10: 0470408634
• Edition: 1st
• Format: Hardcover
• Copyright: 2008-10-13
• Publisher: Wiley-IEEE Press

Summary

"The growing importance of renewable energy sources, control methods and mechanisms, and system restoration has created a critical need for a concise, comprehensive text that covers the concepts associated with electric power and energy systems. Adapted from Electric Power Systems Design and Analysis, this important new work fills that need, providing an up-to-date introduction to this dynamic field." "With its broad, up-to-date coverage, emphasis on applications, and integrated MATLAB scripts, Introduction to Electrical Power Systems provides an ideal, practical introduction to the field, suitable for self-study by practicing engineers and short-course work by students in electrical and computer engineering."--BOOK JACKET.

Author Biography

Mohamed E. El-Hawary has been Professor and Associate Dean of Engineering at DalTech of Dalhousie University (formerly the Technical University of Nova Scotia) since 1981. He has written more than 150 technical papers, mainly in power system engineering, and is an author of three textbooks: Power Systems Analysis, Principles of Electric Machines, and Control System Engineering. He is also coauthor of two research monographs on economic operations of power systems. Dr. El-Hawary chairs the IEEE Power Engineering Society Operating Economics Subcommittee, Life Long Learning Subcommittee, and Awards and Recognitions of the System Operations and Dynamic Performance Committee. He is associate editor of Electric Machines and Power Systems and the International Journal of Electric Energy and Power Systems. Dr. El-Hawary is also former Editor in Chief of IEEE Press serves as Editor of the IEEE Press Power Engineering Series.

Table of Contents

Preface	p. ix
Introduction
A Brief History of Electric Power Systems	p. 1
The Structure of the Power System	p. 3
Outline of the Text	p. 7
Basics of Electric Energy System Theory
Introduction	p. 9
Concepts of Power in Alternating Current Systems	p. 9
Three-Phase Systems	p. 15
The Per Unit System	p. 25
Electromagnetism and Electromechanical Energy Conversion	p. 28
Permeability and Magnetic Field Intensity	p. 31
Flux Linkages, Induced Voltages, Inductance, and Energy	p. 34
Hysteresis Loop	p. 36
Eddy Current and Core Losses	p. 38
Energy Flow Approach	p. 40
Multiply Excited Systems	p. 44
Doubly Excited Systems	p. 46
Salient-Pole Machines	p. 47
Round or Smooth Air-Gap Machines	p. 50
Machine-Type Classification	p. 52
P-Pole Machines	p. 55
Power System Representation	p. 59
Problems	p. 59
Power Generation and the Synchronous Machine
Introduction	p. 69
The Synchronous Machine: Preliminaries	p. 69
Synchronous Machine Fields	p. 72
A Simple Equivalent Circuit	p. 74
Principal Steady-State Characteristics	p. 77
Power-Angle Characteristics and the Infinite Bus Concept	p. 79
Accounting for Saliency	p. 86
Salient-Pole Machine Power Angle Characteristics	p. 91
Problems	p. 93
The Transformer
Introduction	p. 99
General Theory of Transformer Operation	p. 99
Transformer Connections	p. 113
Problems	p. 123
Electric Power Transmission
Introduction	p. 129
Electric Transmission Line Parameters	p. 129
Line Inductance	p. 131
Line Capacitance	p. 149
Two-Port Networks	p. 165
Transmission Line Models	p. 167
Problems	p. 183
Induction and Fractional Horsepower Motors
Introduction	p. 191
Three-Phase Induction Motors	p. 191
Torque Relations	p. 199
Classification of Induction Motors	p. 204
Rotating Magnetic Fields in Single-Phase Induction Motors	p. 205
Equivalent Circuits for Single-Phase Induction Motors	p. 210
Power and Torque Relations	p. 216
Starting Single-Phase Induction Motors	p. 222
Single-Phase Induction Motor Types	p. 224
Problems	p. 231
Faults and Protection of Electric Energy Systems
Introduction	p. 237
Transients during a Balanced Fault	p. 238
The Method of Symmetrical Components	p. 240
Sequence Networks	p. 245
Line-to-Ground Fault	p. 261
Double Line-to-Ground Fault	p. 264
Line-to-Line Fault	p. 268
The Balanced Three-Phase Fault	p. 271
System Protection, An Introduction	p. 272
Protective Relays	p. 273
Transformer Protection	p. 276
Transmission Line Protection	p. 282
Impedance-Based Protection Principles	p. 289
Computer Relaying	p. 297
Problems	p. 299
The Energy Control Center
Introduction	p. 305
Overview of EMS Functions	p. 307
Power Flow Control	p. 315
Power Flow	p. 319
Stability Considerations	p. 332
Power System State Estimation	p. 340
Power System Security	p. 344
Optimal Preventive and Corrective Actions	p. 354
Dynamic Security Analysis	p. 361
The Present and Future of Electric Energy Systems
Introduction	p. 367
Challenges Facing the System	p. 367
Blackouts and their Impact	p. 371
Mitigating and Coping	p. 379
References	p. 385
Index	p. 391
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