Norasage Pattanadech, Rainer Haller, Stefan Kornhuber, Michael Muhr

Partial Discharges (PD) (eBook, ePUB)

Detection, Identification and Localization

• Format: ePub

Produktbeschreibung

PARTIAL DISCHARGES (PD) -- DETECTION, IDENTIFICATION AND LOCALIZATION Explore state-of-the-art partial discharge measurement techniques In Partial Discharges (PD) -- Detection, Identification and Localization, a team of distinguished electrical engineers delivers a comprehensive treatment of the behavior, modeling, measurement, monitoring, localization, and evaluation of partial discharges. It includes coverage of all major advancements in the field that have occurred over the last few decades. It also discusses partial discharge phenomena, detection methods, and strategies for analyzing and processing collected data. Mechanisms of insulation failure are explored, as is the denoising of partial discharge measurement data and the localization of partial discharge in large, high-voltage equipment. Non-electric principles and procedures are discussed, and the book offers a variety of tables, figures, and photographs to illustrate the concepts discussed within. Partial Discharges(PD) also provides: * A thorough introduction to the physical behavior of partial discharges, including their causes and classification * Comprehensive modeling of partial discharge behavior, including classical and dipole discharges * Practical discussions of the measurement of partial discharges, including the electrical method, partial discharge decoupling, and pre- and post-processing of partial discharges * In-depth examinations of the monitoring of partial discharge behavior, including methods and realization Perfect for electrical engineers engaged in electrical power engineering, Partial Discharges (PD) will also earn a place in the libraries of research and development specialists employed in the manufacturing, quality testing and operation of electrical systems.

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Produktdetails

• Verlag: John Wiley & Sons
• Seitenzahl: 336
• Erscheinungstermin: 31. Juli 2023
• Englisch
• ISBN-13: 9781119568421
• Artikelnr.: 68538963

Autorenporträt

Norasage Pattanadech, PhD, is Associate Professor in the Electrical Engineering Department at King Mongkut Institute of Technology in Bangkok, Thailand. Rainer Haller, PhD, Professor on High Voltage Engineering at Faculty of Electrical Engineering at the University of West Bohemia, Pilsen, Czech Republic. Stefan Kornhuber, PhD, is Professor for High Voltage Engineering at the University of Applied Science, Germany. His research interests include outer and inner electrical interfaces of polymeric materials and the diagnosis. Michael Muhr, PhD, is Emeritus Professor at the Institute of High Voltage Engineering and System Management at the Graz University of Technology in Austria.

Inhaltsangabe

Author Biographies xi

Foreword xiii

Symbols and Abbreviations xv

1 Introduction 1

1.1 Overview 2

1.2 Acknowledgments 3

1.3 Users 3

2 Physical Behavior of Partial Discharges 5

2.1 Introduction 5

2.2 External Discharges 7

2.2.1 Tip with Negative Polarity 10

2.2.2 Tip with Positive Polarity 11

2.3 Internal Discharges 17

2.3.1 Discharges in Liquid Insulation 17

2.3.2 Discharges in Solid Insulation 18

2.4 Gliding Discharges 24

2.5 PD Quantities 24

References 29

3 Modeling of PD Behavior 33

3.1 Introduction 33

3.2 Network-Based Model 33

3.3 Field-Based Model 42

3.3.1 Stages of PD Behavior Modeling for DC Conditions 48

3.3.1.1 Stage 1: Inception of Ionization Processes 48

3.3.1.2 Stage 2: Establishment of an Electrical Dipole 49

3.3.1.3 Stage 3: Dissipation of the Electrical Dipole 49

3.3.2 Extended Modeling Parameters 49

3.3.3 Summary 52

References 53

4 Measurement of Partial Discharges 55

4.1 Introduction 55

4.2 Signal Properties 57

4.2.1 Device Under Test 57

4.2.2 High Voltage Circuit 58

4.3 Coupling Methods 59

4.3.1 Capacitive Coupling with Measuring Impedance 60

4.3.2 Inductive Coupling with High-Frequency Current Transformer 65

4.4 Signal Processing 68

4.4.1 Full Analog Processing 68

4.4.2 Semi-Digital Processing 68

4.4.3 Full Digital Processing 69

4.5 Measurement Principles 70

4.5.1 Narrow-Band Measurement 72

4.5.2 Wide-Band Measurement 76

4.5.3 Time Domain Integration 79

4.5.4 Radio Interference Voltage (RIV) Measurement 83

4.5.5 Synchronous Measurement for Multichannel Application 84

4.6 Noise Suppression and Reduction 86

4.6.1 Introduction 86

4.6.2 Noise Sources 87

4.6.2.1 Main Sources of Conducted Coupled Noise 87

4.6.2.2 Blocking Impedance and Filters 88

4.6.2.3 Electrodes and Wire 88

4.6.2.4 Coupling Capacitor 88

4.6.2.5 Floating Potential Elements 88

4.6.2.6 Pulse-Shaped and Harmonic Noise 89

4.6.2.7 Noise via Grounding System or Wire Loops 89

4.6.2.8 Mains Plug and Background Noise of the Measurement Instrument 89

4.6.3 Denoising Methods 89

4.6.3.1 Shielding 90

4.6.3.2 Filters 90

4.6.3.3 Balanced Bridge Measurements 90

4.6.3.4 Windowing 92

4.6.3.5 Gating 93

4.6.3.6 Clustering 93

4.7 Visualization and Interpretation of PD Events 96

4.7.1 Introduction 96

4.7.2 Classical Methods 97

4.7.3 Advanced Methods 99

4.7.4 Pulse Sequence Analysis 103

4.8 Artificial Intelligence and Expert Systems 104

4.8.1 Introduction 104

4.8.2 Artificial Intelligence and Artificial Neural Networks 105

4.8.2.1 Learning Process 107

4.8.2.2 ANN Architecture 108

4.8.2.3 Common Principles 108

4.8.2.4 Applications for PD Classification and Localization 110

4.8.2.5 Basic Principles of PD Recognition 110

4.8.3 Expert System 116

4.8.3.1 Introduction 116

4.8.3.2 Application for PD Diagnostic 118

4.9 Calibration 119

4.9.1 Calibration of PD Measuring Circuit 119

4.9.2 Performance Test of PD Calibrators 122

References 124

5 Electromagnetic Methods for PD Detection 129
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