He - Wavelet Analysis and Transient Signal Processing Applications for Power Systems

1. Chapter 02
2. Chapter 04
3. Chapter 05
4. Chapter 06
5. Chapter 07
6. Chapter 08
7. Chapter 11
8. Chapter 12
9. Appendix A

1. Chapter 01
2. Chapter 02
3. Chapter 03
4. Chapter 04
5. Chapter 05
6. Chapter 06
7. Chapter 07
8. Chapter 08
9. Chapter 09
10. Chapter 10
11. Chapter 11
12. Chapter 12
13. Appendix A

Zhengyou He

Southwest Jiaotong University, China

This edition first published 2016
2016 China Electric Power Press. All rights reserved.

Published by John Wiley & Sons Singapore Pte. Ltd., 1 Fusionopolis Walk, #07-01 Solaris South Tower, Singapore 138628, under exclusive license granted by China Electric Power Press for all media and languages excluding Simplified and Traditional Chinese and throughout the world excluding Mainland China, and with non-exclusive license for electronic versions in Mainland China.

For details of our global editorial offices, for customer services and for information about how to apply for permission to reuse the copyright material in this book please see our website at www.wiley.com.

All Rights Reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, scanning, or otherwise, except as expressly permitted by law, without either the prior written permission of the Publisher, or authorization through payment of the appropriate photocopy fee to the Copyright Clearance Center. Requests for permission should be addressed to the Publisher, John Wiley & Sons Singapore Pte. Ltd., 1 Fusionopolis Walk, #07-01 Solaris South Tower, Singapore 138628, tel: 65-66438000, fax: 65-66438008, email: .

Wiley also publishes its books in a variety of electronic formats. Some content that appears in print may not be available in electronic books.

Designations used by companies to distinguish their products are often claimed as trademarks. All brand names and product names used in this book are trade names, service marks, trademarks or registered trademarks of their respective owners. The Publisher is not associated with any product or vendor mentioned in this book. This publication is designed to provide accurate and authoritative information in regard to the subject matter covered. It is sold on the understanding that the Publisher is not engaged in rendering professional services. If professional advice or other expert assistance is required, the services of a competent professional should be sought.

Limit of Liability/Disclaimer of Warranty: While the publisher and author have used their best efforts in preparing this book, they make no representations or warranties with respect to the accuracy or completeness of the contents of this book and specifically disclaim any implied warranties of merchantability or fitness for a particular purpose. It is sold on the understanding that the publisher is not engaged in rendering professional services and neither the publisher nor the author shall be liable for damages arising herefrom. If professional advice or other expert assistance is required, the services of a competent professional should be sought.

Library of Congress Cataloging-in-Publication Data

Names: He, Zhengyou, author.
Title: Wavelet analysis and transient signal processing applications for power systems / Zhengyou He.
Description: Singapore; Hoboken, NJ: John Wiley & Sons, 2016. | Includes bibliographical references and index.
Identifiers: LCCN 2016003740 | ISBN 9781118977002 (cloth) | ISBN 9781118977033 (epub)
Subjects: LCSH: Wavelets (Mathematics) | Signal processing.
Classification: LCC QA403.3 .H4 2016 | DDC 621.3101/515723dc23
LC record available at http://lccn.loc.gov/2016003740

Cover Image: saicle/Getty

The fault-generated voltage and current contain abundant fault information, such as time of fault occurrence, fault location, fault direction, and so on. This information varies according to different fault conditions. It is important to analyze the fault transient signal and extract the fault features for fast protection, fault type identification, and fault location.

As a new branch of mathematics, wavelet analysis has made many achievements in seismic exploration, atmospheric and ocean wave analysis, speech synthesis, image processing, computer vision, and data compression, among others. With the fast development of computers and the application of large-scale scientific computing, wavelet analysis has been applied to power systems, especially in transient signal analysis.

This book provides the research results from recent years and the authors many years of teaching experience in wavelet theory for engineering applications. A primary study of wavelet analysis theory applied to analyzing transient signals in power systems was carried out. This book is organized into 12 chapters: introduces the definitions and physical significances of six wavelet entropies on the basis of traditional wavelet entropy. Meanwhile, the applications of six wavelet entropies in detection and identification of power systems transient signals have been presented.

The book is written by Prof. Zhengyou He, with the guidance of the authors doctoral supervisor, Qingquan Qian. Dr Jing Zhao, Dr Xiaopeng Li, Master Haishen Zhang, Master Wen He, and Master Shu Zhang also contributed to the compilation and arrangement of this book. Some research of doctoral candidates and masters degree candidates instructed or aided by the author (e.g., Dr Zhigang Liu, Dr Linyong Wu, Dr Ling Fu, Dr Ruikun Mai, Dr Sheng Lin, Dr Jianwei Yang, and PhD candidate Yong Jia) are included in this book. The author hereby thanks the teachers and students above for their contribution.

The book is supported by the National Natural Science Foundation of China (No. 50407009, Wavelet Entropy Theory and Its Application in Power System Fault Detection and Classification; and No. 50877068, Research on Multi-source Power System Fault Diagnosis Method and System Based on Information Theory), New Century Excellent Talents in University of Ministry of Education of China (No. NCET-06-0799, Theory and Application of Power System Fault Diagnosis System Based on Information Theory), Sichuan Province Youth Fund Projects (No. 06ZQ026-012, Generalization of Information Entropy and Its Application on Power Grid Fault Diagnosis), and Research Fund for the Doctoral Program of Higher Education of China (No. 200806130004, A Novel Method for Transmission Line Fault Location Based on Single Ended Traveling Wave Natural Frequency). This work is also supported by the Electrical Engineering School of Southwest Jiaotong University and colleagues of the National Rail Transit Electrification and Automation Engineering Technique Research Center. The author greatly acknowledges their help.

Sincere thanks also go to the researchers and experts whose research is referred to or cited in this book.