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Informationen zum Autor J.C. Das is President, Power System Studies, Inc. Snellville, Georgia. He is an independent consultant, currently with AMEC Foster Wheeler, Inc., a leading supplier of high-value consultancy, engineering, and project management services to the world's energy, power, and process industries. He is the author of IEEE Press titles Power System Harmonics and Passive Filter Designs (2015) and Arc Flash Hazard Analysis and Mitigation (2012). Klappentext An essential guide to studying symmetrical component theory This book utilizes symmetrical components for analyzing unbalanced three-phase electrical systems, by applying single-phase analysis tools. The author covers two approaches for studying symmetrical components; the physical approach, avoiding many mathematical matrix algebra equations, and a mathematical approach, using matrix theory. Divided into seven sections, topics include: symmetrical components using matrix methods, fundamental concepts of symmetrical components, symmetrical component s -transmission lines and cables, sequence components of rotating equipment and static load, three-phase models of transformers and conductors, unsymmetrical fault calculations, and some limitations of symmetrical components. In addition, this book: Provides concise treatment of symmetrical components Describes major sequence models of power system components Discusses Electromagnetic Transient Program (EMTP) models Includes worked examples to illustrate the complexity of calculations, followed by matrix methods of solution which have been adopted for calculations on digital computers Inhaltsverzeichnis ABOUT THE AUTHOR ix FOREWORD xi PREFACE AND ACKNOWLEDGMENTS xiii CHAPTER 1 SYMMETRICAL COMPONENTS USING MATRIX METHODS 1 1.1 Transformations 2 1.2 Characteristic Roots, Eigenvalues, and Eigenvectors 2 1.2.1 Definitions 2 1.2.1.1 Characteristic Matrix 2 1.2.1.2 Characteristic Polynomial 2 1.2.1.3 Characteristic Equation 2 1.2.1.4 Eigenvalues 2 1.2.1.5 Eigenvectors, Characteristic Vectors 2 1.3 Diagonalization of a Matrix 5 1.4 Similarity Transformation 5 1.5 Decoupling a Three-Phase Symmetrical System 6 1.6 Symmetrical Component Transformation 8 1.7 Decoupling a Three-Phase Unsymmetrical System 10 1.8 Clarke Component Transformation 11 1.9 Significance of Selection of Eigenvectors in Symmetrical Components 12 References 14 CHAPTER 2 FUNDAMENTAL CONCEPTS OF SYMMETRICAL COMPONENTS 15 2.1 Characteristics of Symmetrical Components 16 2.2 Characteristics of Sequence Networks 19 2.3 Sequence Impedance of Network Components 20 2.4 Construction of Sequence Networks 20 2.5 Sequence Components of Transformers 22 2.5.1 Delta-Wye or Wye-Delta Transformer 22 2.5.2 Wye-Wye Transformer 25 2.5.3 Delta-Delta Transformer 25 2.5.4 Zigzag Transformer 25 2.5.5 Three-Winding Transformers 27 2.6 Example of Construction of Sequence Networks 32 References 36 CHAPTER 3 SYMMETRICAL COMPONENTS-TRANSMISSION LINES AND CABLES 39 3.1 Impedance Matrix of Three-Phase Symmetrical Line 40 3.2 Three-Phase Line with Ground Conductors 40 3.3 Bundle Conductors 42 3.4 Carson's Formula 44 3.4.1 Approximations to Carson's Equations 46 3.5 Capacitance of Lines 50 3.5.1 Capacitance Matrix 50 3.6 Cable Constants 54 3.6.1 Zero Sequence Impedance of the OH lines and Cables 54 3.6.2 Concentric Neutral Underground Cable 55 3.6.3 Capacitance of Cables 57 3.7 EMTP Models 58 3.7.1 Frequency Dependent Model, FD 60 3.8 Effect of Harmonics on Line Models 62 3.9 Transmission Line Equations with Harmonics 62 References 66 CHAPTER ...
