Signal Processing of Power Quality Disturbances

Signal Processing of Power Quality Disturbances

by Math Bollen and Irene Gu

Hardcover 861 pages

Published by Wiley-IEEE Press

ISBN-13: 978-0-471-73168-9


Book Review by Alexander Apostolov, USA


The analysis of different power systems events can be seen as different things by experts in different domains. To the protection engineer a single-phase-to-ground short circuit fault cleared by the protection device and then followed by automatic reclosing is a sequence of events related to correct or incorrect protection operation. However, to a power quality expert this is a simultaneous voltage sag and voltage swell followed by a temporary interruption.

The analysis of the same event can be achieved with advanced signal processing tools that require the marriage of expert knowledge in both electric power systems and signal processing.

One thing that is quite unique about this book is that it is written by two such experts that have been actually married since 1992. Math Bollen received his PhD degree in 1989 and currently is manager of EMC and Power Quality at STRI, Ludvika, Sweden, and a guest professor at Luleå University of Technology. His wife Irene Gu received her PhD degree in 1992. Since 1996 she has been with the Department of Signals and Systems, Chalmers University of Technology (Gothenburg, Sweden) and has been a professor in signal processing there since 2004.
The material in this large book is organized in eleven chapters.

Chapter 1 is an introduction to the subjects of power quality and signal processing and is intended also to serve as a guide to how to use that material that is later discussed in details in the following chapters.

Chapter 2 describes voltage frequency and magnitude variations, voltage unbalance, fluctuations, light flicker and waveform distortion. Chapter 3 discusses processing of stationary signals and includes overview of methods, parameters that characterize variations, power quality indices estimation of harmonics, interharmonics and broadband spectrum.

Chapters 4 and 5 cover processing of non-stationary signals and statistics of variations.

Chapter 6 focuses on the origin of power quality events - interruptions, voltage dips and transients, while chapter 7 describes the concepts and methods of triggering and segmentation of data that can be due to different underlying power system events. This is followed by the characterization of power quality events voltage magnitude, phase angle and three-phase characteristics versus time and single-event indices described in Chapter 8.

Chapter 9 presents an overview of machine data learning methods that can be used for classification of events.

Chapter 10 covers event statistics to be used for reliability indices. The last chapter of the book presents conclusions on the general events-and-variations framework of power quality monitoring and the signal processing needs to implement it.

The idea of the book is to bridge the gap between power quality and signal processing and help a few groups of readers in their everyday work - students and researchers in power engineering who need to use signal processing techniques for power system applications, and students and researchers in signal processing who need to perform power system disturbance analyses and diagnostics.

The book can be very helpful to many practicing protection, automation and control engineers in their efforts to analyze different power system events.

Relion advanced protection & control.
BeijingSifang June 2016