Summary

Fully revised and updated second edition of Power System Dynamics and Stability (Wiley, 1997). As well as providing essential information on the physical understanding of complex dynamics, explained using simplified models, the book now includes important recent developments in power system technology. These are flexible alternating current transmission systems (FACTS), wide-area monitoring systems (WAMS) and devices enabling the efficient integration of renewable and distributed generated power into the national grid. There is also an analysis of how to control and limit power system failure, examining the stability and reliability of modern power systems. Overall, it is a practical guide to the field with mathematical models using MATLAB and SIMULINK and simulation techniques. Includes information on flexible alternating current transmission systems (FACTS) and wide-area monitoring systems (WAMS). Analyses the technical challenges involved in integrating renewable and distributed energy generation into the national grid, highlighting the significant changes in attitude towards power generation in recent years. Provides in-depth coverage of power system dynamics, stability and reliability, examining how to limit power system failure by looking at the recent high-profile blackouts in Europe and the USA. Presents new chapters describing a mathematical model of a power system suitable for approximate simulation of frequency control and power exchanges using MATLAB/SIMULINK tools, and discussing the static and dynamic properties of equivalents.

Author Biography

Professor Jan Machowski received his MSc and PhD degrees in Electrical Engineering from Warsaw University of Technology in 1974 and 1979, respectively. After obtaining field experience in the Dispatching centre and several power plants, he joined the Electrical Faculty of Warsaw University of Technology where presently he is employed as a Professor and Director of the Power Engineering Institute. His areas of interest are electrical power systems, power system protection and control.

In 1989-93 Professor Machowski was a Visiting Professor at Kaiserslautern University in Germany where he carried out two research projects on power swing blocking algorithms for distance protection and optimal control of FACTS devices.

Professor Machowski is the co-author of three books published in Power System control and Stability (WPW, 2007). He is also a co-author of Power System Dynamics and Stability published by John Wiley & Sons, Ltd (1997).

Professor Machowski is the author and co-author of Power System stability and power system protection commissioned by the Polish Power Grid Company, electric Power Research Institute in the United States, Electrinstitut Milan Vidmar in Slovenia and Ministry of Science and Higher Education of Poland.

Professor Janusz Bialek received his MEng and PhD degrees in Electrical Engineering from Warsaw University of Technology in 1977 and 1981, respectively. From 1981 to 1989 he was a lecturer with Warsaw University of Technology. In 1989 he moved to the University of Durham, United Kingdom, and since 2003 he has been at the University of Edinburgh where he currently holds the Bert Whittington Chair of Electrical Engineering. His main research interests are in sustainable energy systems, security of supply, liberalization of the electricity supply industry and power system dynamics and control.

Professor Bialek has co-authored two books and over 100 research papers. He has been a consultant to the Department of trade and Industry (DTI) of the UK government, Scottish Executive Elexon, Polish Power Grid Company, Scottish Power, Enron and Electrical Power Research Institute (EPRI). He was the Principal Investigator of a number of major research grants funded by the Engineering and Physical Sciences Research Council and DTI.

Professor Bialek is a member of the Advisor Board of Electricity Policy Research Group, Cambridge University, a member of the Dispute Resolution Panel for the Single Electricity Market Operator, Ireland, and Honorary Professor of Heriot-Watt University, Scotland.

Dr Jim Bumby received his BSc and PhD degrees in Engineering from Durham University, United Kingdom, in 1970 and 1974, respectively. From 1973 to 1978 he worked for the International Research and Development Company, Newcastle-upon-Tyne, on superconducting machines, hybrid vehicles and sea-wave energy. Since 1978 he has worked in the School of Engineering at Durham University where he is currently reader in Electrical Engineering. He has worked in the tear of electrical machines and systems for over 30 years, first in industry an then in academia.

Dr Bumby is the author or co-author of over 100 technical papers and two books in the general area of electrical machines/power systems and control. He has also written numerous technical reports for industrial prizes including the Institute of Measurement and Control prize for the best transactions paper in 1988 for work on hybrid electric vehicles and the IEE Power Division Premium in 1997 for work on direct drive permanent magnet generators for wind turbine applications. His current research interests are in novel generator technologies and their associated control for new and renewable energy systems.

About the Authors
Preface
Acknowledgements
List of Symbols
Introduction to Power Systems
Introduction.
Stability and control of a dynamic system
Classification of power system dynamics
Two pairs of important quantities: reactive power/voltage and real power/frequency
Stability of power system
Security of power system
Brief historical overview
Power system components.
Structure of the electrical power system
Generating units
Substations
Transmission and distribution network
Protection
Wide Area Measurement Systems
The power system in the steady-state
Transmission lines
Transformers
Synchronous generators
Power system loads
Network equations
Power flows in transmission networks
Introduction to Power System Dynamics
Electromagnetic phenomena
Fundamentals
Three-phase short-circuit on a synchronous generator
Phase-to-phase short-circuit
Synchronization
Short circuit in a network and its clearing
Electromechanical dynamics - small disturbances
Swing equation
Damping power
Equilibrium points
Steady-state stability of unregulated system
Steady-state stability of the regulated system
Electromechanical dynamics - large disturbances
Transient stability
Swings in multi-machine systems
Direct method for stability assessment
Synchronization
Asynchronous operation and resynchronization
Out-of-step protection systems
Torsional oscillations in the drive shaft
Wind power
Wind turbines
Induction machine equivalent circuit
Induction generator coupled to the grid
Induction generators with slightly increased speed range via external rotor resistance
Induction generators with significantly increased speed range: DFIGs
Fully rated converter systems: wide speed control
Peak power tracking of variable speed wind turbines
Connections of wind farms
Fault behaviour of induction generators
Influence of wind generators on power system stability
Voltage stability
Network feasibility
Stability criteria
Critical load demand and voltage collapse
Static analysis
Dynamic analysis
Prevention of voltage collapse
Self-excitation of a generator operating on a capacitive load
Frequency stability and control
Automatic generation control
Stage I - Rotor swings in the generators
Stage II - Frequency drop
Stage III - Primary control
STAGE IV - Secondary control
FACTS devices in tie-lines
Stability enhancement.1
Power system stabilizers1
Fast valving1
Braking resistors1
Generator tripping1
Shunt FACTS devices1
Series compensators1
Unified power flow controller
Advanced Topics in Power System Dynamics
Advanced power system modelling.1
Excitation Systems1
Turbines and turbine governors1
FACTS devices
Steady-state stability of multi-machine system.1
Mathematical background1
Steady-state stability of unregulated system1
Steady-state stability of the regulated system
Power system dynamic simulation.1
Numerical integration methods1
The partitioned-solution1
The simultaneous solut
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