Harmonics and Power Systems

Series:
Electric Power Engineering Series
Published:
May 22, 2006 by CRC Press - 208 Pages
Author(s):
Francisco De La Rosa

Purchasing Options

Hardback
$107.95
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ISBN 9780849330162
Cat# 3016
 

Features

  • Provides a comprehensive, in-depth description of sources, effects, and control of harmonic distortion in power systems
  • Presents easy-to-follow illustrations and realistic examples based on actual industrial experiences
  • Compares standards issued by the two largest standards bodies in the world: IEEE and IEC
  • Explains various harmonic mitigation methods in detail, including the most common passive filtering techniques
  • Considers the specific features of different types of networks and their consequent role in harmonic propagation

    • Summary

    Harmonics have always been a problem with industrial loads, but now more and more consumer and commercial power loads are cropping up as sources of harmonic currents. Approaching the problem from both utility and end-user perspectives, Harmonics and Power Systems addresses the most relevant aspects in the generation and propagation of harmonic currents in electrical networks.

    Grounded in years of practical experience working and teaching in the electric, oil, and steel industries in several countries to address the harmonics problem, De La Rosa elucidates the concepts and equations with worked examples and various illustrations generated using current industrial software tools. From a general overview of the principles and equations used to describe and analyze harmonic currents to the fundamentals of power losses in harmonic environments, this field-tested book offers detailed coverage of passive harmonic filters, harmonic propagation analysis, and alternatives to filtering. The author provides a clear-cut procedure for evaluating harmonic current propagation and assessing their penetration into electrical networks. He also discusses the most important and widely used industry standards to control harmonic distortion levels.

    Recognizing the diversity of power networks, this book examines the role of specific characteristics of various types of networks. Harmonics and Power Systems is an easy-to-follow, practical introduction for novices and a useful problem-solving tool for seasoned professionals.

    Table of Contents

    FUNDAMENTALS OF HARMONIC DISTORTION AND POWER QUALITY INDICES IN ELECTRIC POWER SYSTEMS
    Introduction
    Basics of Harmonic Theory
    Linear and Nonlinear Loads
    Fourier Series
    Power Quality Indices under Harmonic Distortion
    Power Quantities under Nonsinusoidal Situations
    References

    HARMONIC SOURCES
    Introduction
    The Signature of Harmonic Distortion
    Traditional Harmonic Sources
    Future Sources of Harmonics
    References

    STANDARDIZATION OF HARMONIC LEVELS
    Introduction
    Harmonic Distortion Limits
    References

    EFFECTS OF HARMONICS ON DISTRIBUTION SYSTEMS
    Introduction
    Thermal Effects on Transformers
    Miscellaneous Effects on Capacitor Banks
    Abnormal Operation of Electronic Relays
    Lighting Devices
    Telephone Interference
    Thermal Effects on Rotating Machines
    Pulsating Torques in Rotating Machines
    Abnormal Operation of Solid-State Devices
    Considerations for Cables and Equipment Operating in Harmonic Environments
    References

    HARMONICS MEASUREMENTS
    Introduction
    Relevant Harmonic Measurement Questions
    Measurement Procedure
    Relevant Aspects
    References

    HARMONIC FILTERING TECHNIQUES
    Introduction
    General Aspects in the Design of Passive Harmonic Filters
    Single-Tuned Filters
    Band-Pass Filters
    Relevant Aspects to Consider in the Design of Passive Filters
    Methodology for Design of Tuned Harmonic Filters
    Example 1: Adaptation of a Power Factor Capacitor Bank into a Fifth Harmonic Filter
    Example 2: Digital Simulation of Single-Tuned Harmonic Filters
    Example 3: High-Pass Filter at Generator Terminals Used to Control a Resonant Condition
    Example 4: Comparison between Several Harmonic Mitigating Schemes Using University of Texas at Austin HASIP Program
    References

    OTHER METHODS TO DECREASE HARMONIC DISTORTION LIMITS
    Introduction
    Network Topology Reconfiguration
    Increase of Supply Mode Stiffness
    Harmonic Cancellation through Use of Multipulse Converters
    Series Reactors as Harmonic Attenuator Elements
    Phase Balancing
    Reference

    HARMONIC ANALYSES
    Introduction
    Power Frequency vs. Harmonic Current Propagation
    Harmonic Source Representation
    Harmonic Propagation Facts
    Flux of Harmonic Currents
    Interrelation between AC System and Load Parameters
    Analysis Methods
    Examples of Harmonic Analysis
    References

    FUNDAMENTALS OF POWER LOSSES IN HARMONIC ENVIRONMENTS
    Introduction
    Meaning of Harmonic-Related Losses
    Relevant Aspects of Losses in Power Apparatus and Distribution Systems
    Harmonic Losses in Equipment
    Example of Determination of K Factor
    Rotating Machines
    References
    INDEX

    Editorial Reviews

    "Here practitioner De La Rosa compiles the most important information on aspects of harmonics and their control, covering the fundamentals of harmonic distortion and power quality indices in electric power systems, harmonic sources, standardization of harmonic levels, effects of harmonics on distribution systems, measurements, filtering techniques and other methods to decrease distortion limits, and means of performing harmonic analyses. Each chapter contains very useful references and the text is very well-illustrated."
    -SciTech Book News, Vol. 30, No. 3, September 2006

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