Transient Phenomena in Electrical Power Systems

Transient Phenomena in Electrical Power Systems: Problems and Illustrations deals with the technique of calculating the different transient phenomena in electrical power systems. Concrete examples are given to show the character of the transient processes, and the order of magnitude is derived in some typical cases. Topics covered include equivalent circuits, steady-state quantities, and the initial conditions of a transient process. The characteristics of generators and synchronous condensers are also considered.

Comprised of nine chapters, this book begins with an introduction to the units of measurement as well as the equations of the system and its elements, such as frequency regulators, turbine governors, and transformers. The second chapter presents examples of the construction of equivalent circuits and the determination of the steady-state operation of a system, along with the original condition that precedes the transient process. The third and fourth chapters deal with different characteristics of generators, synchronous condensers, and loads of electrical systems. The fifth chapter examines the general criteria of stability used in calculations of the conditions in electrical systems. Problems of static stability and the effect of large oscillations on stability are discussed in the next three chapters. The final chapter is devoted to special problems on the variation of operating conditions, frequency variation, and the flow of power between systems.

This monograph is written for design engineers, operation engineers, apprentices, and students.

Preface

Introduction

Translator's Note

1. System of Units and the Derivation of the Equations of the Elements in Electrical Power Systems

2. Equivalent Circuits and the Determination of the Steady-State Quantities and the Initial Conditions of a Transient Process

3. The Characteristics of Generators and Synchronous Condensers

4. Load Characteristics and their Stability

5. The Criteria for Stability of System Operation (The Solution of Characteristic Equations and the Determination of the Type of Root without Solution)

6. Static Stability. Power Limits and Limits of Stability

7. Large Oscillations and Dynamic Stability Currents under Oscillating Conditions

8. Asynchronous Operation, Resynchronization and Self-Synchronization

9. Variation of the Quantities in the System (Frequency, Flux, Exchange of Power, Voltage, etc.)

Appendixes

1. Tables of Trigonometrical Functions

2. Typical Static Characteristics of the Loads of Electrical Systems

3. Nomograms for Determining the Self and Mutual Admittances and Auxiliary Quantities

4. Nomograms for Determining the Angle δ as a Function of Time τ

5. Nomograms for Determining the Critical Short-Circuit Switching Angle

6. Nomograms for Calculating Dynamic Stability

7. Maximum Load Curves

8. The Principal Parameters of Synchronous Machine

References

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