Power System Dynamics

Stability and Control
Besorgungstitel | Lieferzeit:3-5 Tage I
Jan Machowski
1232 g
244x168x40 mm

About the Authors



List of Symbols

Part I: Introduction to Power Systems.

1 Introduction.

1.1 Stability and control of a dynamic system

1.2 Classification of power system dynamics

1.3 Two pairs of important quantities: reactive power/voltage and real power/frequency

1.4 Stability of power system

1.5 Security of power system

1.6 Brief historical overview

2. Power system components.

2.1 Structure of the electrical power system

2.2 Generating units

2.3 Substations

2.4 Transmission and distribution network

2.5 Protection

2.6 Wide Area Measurement Systems

3. The power system in the steady-state.

3.1. Transmission lines

3.2. Transformers

3.3. Synchronous generators

3.4. Power system loads

3.5. Network equations

3.6. Power flows in transmission networks

Part II: Introduction to Power System Dynamics.

4. Electromagnetic phenomena.

4.1. Fundamentals

4.2. Three-phase short-circuit on a synchronous generator

4.3. Phase-to-phase short-circuit

4.4. Synchronization

4.5. Short circuit in a network and its clearing

5. Electromechanical dynamics - small disturbances.

5.1. Swing equation

5.2. Damping power

5.3. Equilibrium points

5.4. Steady-state stability of unregulated system

5.5. Steady-state stability of the regulated system

6. Electromechanical dynamics - large disturbances.

6.1. Transient stability

6.2. Swings in multi-machine systems

6.3. Direct method for stability assessment

6.4. Synchronization

6.5. Asynchronous operation and resynchronization

6.6 Out-of-step protection systems

6.7. Torsional oscillations in the drive shaft

7. Wind power.

7.1 Wind turbines

7.2 Induction machine equivalent circuit

7.3 Induction generator coupled to the grid

7.4 Induction generators with slightly increased speed range via external rotor resistance

7.5 Induction generators with significantly increased speed range: DFIGs.

7.6 Fully rated converter systems: wide speed control

7.7 Peak power tracking of variable speed wind turbines

7.8 Connections of wind farms

7.9 Fault behaviour of induction generators

7.10 Influence of wind generators on power system stability

8. Voltage stability.

8.1. Network feasibility

8.2. Stability criteria

8.3. Critical load demand and voltage collapse

8.4. Static analysis

8.5. Dynamic analysis

8.6. Prevention of voltage collapse

8.7. Self-excitation of a generator operating on a capacitive load

9. Frequency stability and control.

9.1. Automatic generation control

9.2. Stage I - Rotor swings in the generators

9.3. Stage II - Frequency drop

9.4. Stage III - Primary control

9.5. STAGE IV - Secondary control

9.6. FACTS devices in tie-lines

10. Stability enhancement.

10.1. Power system stabilizers

10.2. Fast valving

10.3. Braking resistors

10.4. Generator tripping

10.5. Shunt FACTS devices

10.6. Series compensators

10.7. Unified power flow controller

PART III: Advanced Topics in Power System Dynamics.

11. Advanced power system modelling.

11.2. Excitation Systems

11.3. Turbines and turbine governors

11.4. FACTS devices

12. Steady-state stability of multi-machine system.

12.1. Mathematical background

12.2. Steady-state stability of unregulated system

12.3. Steady-state stability of the regulated system

13. Power system dynamic simulation.

13.1. Numerical integration methods

13.2. The partitioned-solution

13.3. The simultaneous solution methods

13.4. Comparison between the methods

14. Power system model reduction - equivalents.

14.1. Types of equivalents

14.2. Network transformation

14.3. Aggreation of generating units

14.4. Equivalent model of external subsystem

14.5. Coherency recognition

14.6. Properties of coherency-based equivalents


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.

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