Time-Varying Waveform Distortions in Power Systems

by Editor: Paulo F. Ribeiro (Calvin College, Michigan, USA)

• ISBN13: 9780470746745
• ISBN10: 0470746742
• Format: eBook
• Copyright: 2009-07-01
• Publisher: Wiley-IEEE Press

Summary

A comprehensive review of analytical signal processing techniques applied to power systems and power quality applications.This reference book is unique in addressing time-varying waveform and harmonic distortions. It details many different approaches, pooling cutting edge material from university lecturers and practising power engineers to provide a wide spectrum of expertise.Divided into clear sections, the book discusses a range of topics including... current and voltage variations; standards and measurement issues; advanced techniques such as spectral, time-frequency, probabilistic; and further methods, such as independent component analysis, and fuzzy logic.Case studies, real world data and examples (including basic application examples and sample waves from industrial sites) supplement the theory and demonstrate the methods shown.With extensive appendices in addition, this book is of great value to power systems, utility, maintenance and instrumentation engineers. It is also a useful source of information for researchers and consultants, university professors and graduate students in power systems and power quality areas.

Table of Contents

Contributors

Preface

Website Information

Acknowledgments

General Concepts and Definitions

Probabilistic aspects of time-varying harmonics

Probability distribution and spectral analysis of nonstationary random processes

Transients and harmonics

Electric power definitions under random conditions

Visualizing Joseph Fourier's imaginative discovery via FEA

Current Variations

Summation of random harmonic currents

Probabilistic modeling of single high-power loads

Voltage Variations

Probabilistic modeling for network analysis

Probabilistic modeling of harmonic impedances

Standards and Measurement Issues

Time-varying and probabilistic considerations: setting limits

Probabilistic harmonic indices

Measurement techniques and benchmarking

Applications and Case Studies

Harmonic summation for multiple arc furnaces

Treatment of measured harmonic currents in filters of an HVDC system

Advanced Techniques

Visualization of time-varying waveform distortions with wavelets

Wavelets for the measurement of electrical power signals

Fuzzy logic application for time-varying harmonics

Real-time simulation of time-varying harmonics

Independent component analysis for harmonic studies

Enhanced empirical mode decomposition applied to waveform distortions

Harmonic and interharmonic on adjustable speed drives

Tracking time-varying power harmonic distortions

Enhanced DFT for time-varying harmonic decomposition

Enhanced PLL based filter for time-varying harmonic decomposition

Prony analysis for time-varying harmonics

Time-varying harmonic currents from large penetration electronic equipment

Sample of waveforms and decompositions

Index

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