Power System Dynamics: Stability and Control, 2nd Edition

by Jan Machowski (Warsaw University of Technology); Janusz Bialek (University of Edinburgh); Jim Bumby (School of Engineering, Durham University)

• ISBN13: 9780470714140
• ISBN10: 047071414X
• Format: eBook
• Copyright: 2008-11-01
• Publisher: Wiley

Summary

This book is the fully revised and updated second edition of Power System Dynamics and Stability published in 1997 . The modified title Power System Dynamics: Stability and Control reflects a slight shift in focus from solely describing power system dynamics to the means of dealing with them. The book has been expanded by about a third to include: a new chapter on wind power generation; a new section on wide-area measurement systems (WAMS) and their application for real-time control; an overview of lessons learned from wide-spread blackouts affecting North America and Europe in 2003, 2004 and 2006; enhanced treatment of voltage stability and control, and frequency stability and control; application of Lyapunov direct method to analyse and enhance stability of multi-machine power systems ; expanded coverage of steady-state stability using eigenvalue analysis, including modal analysis of dynamic equivalents. The book continues the successful approach of the first edition by progressing from simplicity to complexity. It places the emphasis first on understanding the underlying physical principles before proceeding to more complex models and algorithms. The reader will appreciate the authors' accessible approach as the book is illustrated by over 400 diagrams and a large number of examples. Power System Dynamics: Stability and Control, Second Edition is an essential resource for graduates of electrical engineering. It is also a clear and comprehensive reference text for undergraduate students, and for practising engineers and researchers who are working in electricity companies or in the development of power system technologies.

Table of Contents

About the AuthorsPrefaceAcknowledgementsSymbolsPart I Introduction to power systems1 Introduction1.1 Stability and control of a dynamic system1.2 Classification of power system dynamics1.3 Two pairs of important quantities: reactive power/voltage and real power/frequency1.4 Stability of power system1.5 Security of power system1.6 Brief historical overview2 Power system components2.1 Structure of the electrical power system2.2 Generating units2.3 Substations2.4 Transmission and distribution network2.5 Protection2.6 Wide Area Measurement Systems3 The power system in the steady-state3.1. Transmission lines3.2. Transformers3.3. Synchronous generators3.4. Power system loads3.5. Network equations3.6. Power flows in transmission networksPart II Introduction to power system dynamics and control4 Electromagnetic phenomena4.1. Fundamentals4.2. Three-phase short-circuit on a synchronous generator4.3. Phase-to-phase short-circuit4.4. Synchronization4.5. Short circuit in a network and its clearing5 Electromechanical dynamics - small disturbances5.1. Swing equation5.2. Damping power5.3. Equilibrium points5.4. Steady-state stability of unregulated system5.5. Steady-state stability of the regulated system6 Electromechanical dynamics - large disturbances6.1. Transient stability6.2. Swings in multi-machine systems6.3. Direct method for stability assessment6.4. Synchronization6.5. Asynchronous operation and resynchronization6.6 Out-of-step protection systems6.7. Torsional oscillations in the drive shaft7 Wind power7.1 Wind turbines7.2 Induction machine equivalent circuit7.3 Induction generator coupled to the grid7.4 Induction generators with slightly increased speed range via external rotor resistance7.5 Induction generators with signicantly increased speed range: doubly fed induction generators ( DFIG'S )7.6 Fully rated converter systems: wide speed control7.7 Peak power tracking of variable speed wind turbines7.8 Connections of wind farms7.9 Fault behaviour of induction generators7.10 Influence of wind generators on power system stability8 Voltage stability8.1. Network feasibility8.2. Stability criteria8.3. Critical load demand and voltage collapse8.4. Static analysis8.5. Dynamic analysis8.6. Prevention of voltage collapse8.7. Self-excitation of a generator operating on a capacitive load9 Frequency stability and control9.1. Automatic generation control9.2. Stage I - Rotor swings in the generators9.3. Stage II - Frequency drop9.4. Stage III - Primary control9.5. STAGE IV - Secondary control9.6. FACTS devices in tie-linesPart III Advanced topics in power system dynamics and control10 Stability enhancement10.1. Power system stabilizers10.2. Fast valving10.3. Braking resistors10.4. Generator tripping10.5. Shunt FACTS devices10.6. Series compensators10.7. Unified power flow controller11 Advanced power system modelling11.2. Excitation Systems11.3. Turbines and turbine governors11.4. FACTS devices12 Steady-state stability of multimachine system12.1. Mathematical background