Power System Analysis

Comprehensive Lessons

verfasst von: Mehdi Rahmani-Andebili

Verlag: Springer Nature Switzerland

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

Inhaltsverzeichnis

Über dieses Buch

Power System Analysis: Comprehensive Lessons is designed for upper-level undergraduate and graduate students taking electric power system analysis courses. The classroom-tested textbook covers the fundamental concepts in power system analysis, per-unit system, single-phase and three-phase transformers, synchronous generators, transmission line parameters, transmission line models and performance, bus admittance and impedance matrices, and power flow analysis. It provides comprehensive lessons with examples that offer detailed solutions to help students learn theoretical, numerical, and real-world problems. Additionally, partially solved exercises encourage students to solve problems while guiding them through the problem-solving process with hints to the required formulas, and exercises with final answers encourage students to practice independently. Problems without solutions or final answers will aid instructors in designing tests and quizzes and encourage motivated students.

This textbook will improve students’ problem-solving skills and foster a solid understanding of power system analysis by offering detailed lessons and problem solutions, multiple methods for solving problems, and clear explanations of concepts.

Inhaltsverzeichnis

Frontmatter

1. Fundamental Concepts in Power System Analysis

Abstract

In this chapter, the fundamental concepts discussed in power system studies are presented. In this regard, first, the sinusoidal signals and their representations in time and phasor domains are introduced, and then, active, reactive, apparent, and complex powers in a single-phase power system are formulated. Next, the power factor concept and different load types including purely resistive, inductive, purely inductive, capacitive, and purely capacitive are presented. After that, power factor correction for various goals, such as removing overloading or releasing the loading capacity of feeders, postponing installation of new power plants, improving the voltage profile of buses, decreasing power and energy losses of feeders, and minimizing the operation cost of an electrical system, is studied. Afterward, complex power generation-consumption balance and complex power flow are formulated and investigated. Subsequently, balanced three-phase power systems with star- and delta-connected loads are studied. Finally, the per-phase analysis of balanced three-phase power systems and three-phase powers are presented.

Mehdi Rahmani-Andebili

2. Per-Unit System

Abstract

The concept of a per-unit (p.u.) system and its application in single-phase and three-phase power system analyses are presented in this chapter. Herein, first, the per-unit system is defined, and the quantities are expressed in the per-unit system. Subsequently, the electrical circuit laws in the per-unit system are presented, and the power systems are studied in the per-unit system.

Mehdi Rahmani-Andebili

3. Single-Phase and Three-Phase Transformers

Abstract

In this chapter, the single-phase and three-phase ideal and real transformers and autotransformers are studied. Herein, the equivalent and approximate equivalent circuits of a real transformer are presented, and their parameters are determined by using the open-circuit and short-circuit tests. Moreover, the voltage regulation of a real transformer is formulated and studied. In addition, the maximum efficiency of a real transformer along with its daily efficiency for a variable load is studied. The various configurations of a three-phase transformer, the phase shift of three-phase transformers, and per-phase analysis of balanced three-phase power systems including three-phase transformers are the next sections of the chapter.

Mehdi Rahmani-Andebili

4. Synchronous Generators

Abstract

In this chapter, the equivalent model of a synchronous generator is presented, and its voltage regulation, power factor control, and complex power flow are studied. In synchronous machines, armature windings and field windings are placed in a stator and rotor, respectively. Like other rotating electric machines, a synchronous machine can be operated as a generator or motor. Synchronous generators are the main source of power generation in power systems. They are driven by a variety of prime movers such as gas turbines, steam turbines, and hydro-turbines to generate bulk power.

Mehdi Rahmani-Andebili

5. Transmission Line Parameters

Abstract

In this chapter, mathematical relations to calculate the resistance, inductance, and capacitance of a single conductor, a single-phase transmission line, a three-phase transmission line with symmetric and asymmetric spacings, a bundled three-phase transmission line, and a bundled double-circuit three-phase transmission line are developed and studied.

Mehdi Rahmani-Andebili

6. Transmission Line Model and Performance

Abstract

In this chapter, short, medium, and long transmission lines are mathematically modeled, and their performance is studied. Herein, incident and reflected traveling waves, characteristic impedance loading, and complex power flow are investigated for a long transmission line. Moreover, for a long lossless transmission line, surge impedance loading, complex power flow, steady-state stability and thermal loading limits, and series and shunt compensations are studied.

Mehdi Rahmani-Andebili

7. Bus Admittance and Impedance Matrices

Abstract

In this chapter, the rules for building a bus admittance matrix and bus impedance matrix are presented and studied. Bus admittance and impedance matrices are applied in power flow and fault analyses, respectively.

Mehdi Rahmani-Andebili

8. Power Flow Analysis

Abstract

In this chapter, the power flow problem is formulated by using nodal analysis and then solved by using two iterative techniques: Gauss-Seidel and Newton-Raphson. Herein, it is assumed that the three-phase power system is balanced and is in the steady-state condition.

Mehdi Rahmani-Andebili

9. Project

Abstract

This project covers Chaps. 1, 2, 5, 6, 7, and 8 of the textbook. In other words, to conduct the project, a student needs to have the knowledge of fundamental concepts in power system analysis, per-unit system, transmission line parameters, transmission line model and performance, bus admittance matrix, and power flow analysis techniques (Rahmani-Andebili, Power system analysis – practice problems, methods, and solutions. Springer Nature, Cham, 2021).

Mehdi Rahmani-Andebili

Backmatter

Titel: Power System Analysis
verfasst von: Mehdi Rahmani-Andebili
Verlag: Springer Nature Switzerland
Electronic ISBN: 978-3-031-64691-1
Print ISBN: 978-3-031-64690-4
DOI: https://doi.org/10.1007/978-3-031-64691-1