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2016 | Buch

Introduction Kapitel lesen Erstes Kapitel lesen

Power System Dynamics and Control

verfasst von: Harry G. Kwatny, Karen Miu-Miller

Verlag: Springer New York

Buchreihe : Control Engineering

Enthalten in: Springer Professional "Wirtschaft+Technik" , Springer Professional "Technik"

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Über dieses Buch

This monograph explores a consistent modeling and analytic framework that provides the tools for an improved understanding of the behavior and the building of efficient models of power systems. It covers the essential concepts for the study of static and dynamic network stability, reviews the structure and design of basic voltage and load-frequency regulators, and offers an introduction to power system optimal control with reliability constraints. A set of Mathematica tutorial notebooks providing detailed solutions of the examples worked-out in the text, as well as a package that will enable readers to work out their own examples and problems, supplements the text.

A key premise of the book is that the design of successful control systems requires a deep understanding of the processes to be controlled; as such, the technical discussion begins with a concise review of the physical foundations of electricity and magnetism. This is followed by an overview of nonlinear circuits that include resistors, inductors, capacitors, and memristors, along with an examination of basic circuit mathematical models and formulations. AC power systems are considered next, in which models for their basic components are derived. The following chapters address power system dynamics using both the ordinary differential equation and differential-algebraic equation models of a power network, as well as bifurcation analysis and the behavior of a network as it approaches voltage instability. Two classic control problems – voltage regulation and load-frequency control – are then described, including the coordination of economic dispatch with load-frequency control. Finally, power system control problems involving operation in highly nonlinear regimes and subjected to discrete failure modes are discussed.

Power System Dynamics and Control will appeal to practicing power system engineers, control systems engineers interested in power systems, and graduate students in these areas. Because it provides sufficient information about their modelling and behavior, control engineers without a background in power systems will also find it to be a valuable resource.

Inhaltsverzeichnis

Frontmatter
Chapter 1. Introduction
Abstract
Electric power systems continue to evolve as new technologies for generation, storage, delivery, and consumption take form. Accordingly, system management practices are continually reexamined in terms of providing an efficient and reliable supply.
Harry G. Kwatny, Karen Miu-Miller
Chapter 2. Basics of Electricity and Magnetism
Abstract
This chapter provides a succinct review of the essential physics of electricity and magnetism that forms the basis for understanding how electric power systems work. Later chapters will use this foundational material to build models of power system components and systems. Electric fields, magnetic fields, and Maxwell’s equations are the topics of the three sections of this chapter. Examples are given that illustrate the basic characteristics of core electrical components and electromechanical devices.
Harry G. Kwatny, Karen Miu-Miller
Chapter 3. Electric Circuits and Devices
Abstract
In this chapter, nonlinear circuits that include resistors, inductors, capacitors, and memristors (RLCM) are discussed. Analysis of the individual elements is followed by the examination of basic circuit mathematical models and theorems. RLCM circuit dynamic models are constructed using Lagrange formulation based on the generalized Euler–Lagrange equations of Noble and Sewell [157].
Harry G. Kwatny, Karen Miu-Miller
Chapter 4. AC Power Systems
Abstract
For our purposes, an AC network is simply a network, in which all voltage and current sources are sinusoidal with a common frequency.
Harry G. Kwatny, Karen Miu-Miller
Chapter 5. Power System Dynamics: Foundations
Abstract
In this chapter, we briefly review basic material about nonlinear ordinary differential equations that is important background for later chapters. After a preliminary discussion of the basic properties of differential equations including the existence and uniqueness of solutions, we turn to a short discussion of stability in the sense of Lyapunov. In addition to stating the most important theorems on stability and instability, we provide a number of illustrative examples. As part of this discussion, we introduce Lagrangian systems—a topic to be treated at great length later. This chapter is concerned exclusively with dynamical systems with smooth systems. It is presumed that the material discussed is not new to the reader, and we provide only a short summary of those elements considered immediately relevant. For a more complete discussion, many excellent textbooks are available. We reference a number of them in the sequel.
Harry G. Kwatny, Karen Miu-Miller
Chapter 6. Power System Dynamics: Bifurcation Behavior
Abstract
This chapter begins with a summary of the basic properties of systems described by differential-algebraic equations (DAEs) and moves on to study singularities and bifurcations of DAEs. The study of local behavior around bifurcation points of the equilibrium equations is important as such points typically involve some sort of static or dynamic instability phenomenon. Computational methods for finding these static bifurcation points and generating models for examining local behavior are considered next. Locating Hopf (dynamic) bifurcation points are also examined.
Harry G. Kwatny, Karen Miu-Miller
Chapter 7. Elements of Power Systems Control
Abstract
Control of voltage, frequency, and load is central to power network operation. The following sections review the basics of these systems. Each generator has two basic controllers, a frequency (or load frequency) controller and a voltage controller. The two are generally analyzed independently. The primary voltage control system involves using the generator excitation system to change the field voltage in order to regulate the generator terminal bus voltage.
Harry G. Kwatny, Karen Miu-Miller
Chapter 8. Power System Management
Abstract
Many systems undergo reconfiguration or switching during normal and abnormal operations. Such systems can function in different modes or discrete states in each of which the system may exhibit distinct dynamical behavior. Transitions between modes are defined by logical conditions that can depend on continuous dynamical states or external signals. Such systems are called hybrid systems [174] or mixed logical dynamical systems (MLD) [24, 77]. The relevance of such problems to power systems was clearly noted by Dy Liacco in [131, 132, 133]. This chapter is concerned with power systems that operate in this way.
Harry G. Kwatny, Karen Miu-Miller
Backmatter
Metadaten
Titel
Power System Dynamics and Control
verfasst von
Harry G. Kwatny
Karen Miu-Miller
Copyright-Jahr
2016
Verlag
Springer New York
Electronic ISBN
978-0-8176-4674-5
Print ISBN
978-0-8176-4673-8
DOI
https://doi.org/10.1007/978-0-8176-4674-5

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