Brief Contents
Chapter 1 Economic Aspects
Chapter 2 Economic Load Dispatch-I
Chapter 3 Economic Load Dispatch-II
Chapter 4 Optimal Unit Commitment
Chapter 5 Optimal Power-Flow Problem—Solution Technique
Chapter 6 Hydro-Thermal Scheduling
Chapter 7 Load Frequency Control-I
Chapter 8 Load Frequency Control-II
Chapter 9 Reactive Power Compensation
Chapter 10 Voltage Control
Chapter 11 Modeling of Prime Movers and Generators
Chapter 12 Modeling of Speed Governing and Excitation Systems
Chapter 13 Power System Security and State Estimation
Preface
This book entitled Power System Operation and Control has been intended for use by undergraduate students in
Indian universities. With a judicious mix of advanced topics, the book may also be useful for some institutions as a first course for postgraduates. The organization of
this book reflects our desire to provide the reader with a thorough understanding of the basic principles and techniques of power system operation and control.
Written to address the need for a text that clearly presents the concept of economic system operation in a manner that kindles interest, the topics are dealt with
using a lucid approach that may benefit beginners as well as advanced learners of the subject. It has been designed as a functional aid to help students learn independently.
Chapter 1
introduces the economic aspects of power system and provides definitions for the various terms used in its analysis. It explains reserve requirements, the importance of load forecasting, and its classification.
Chapter 2
describes system variables and their
functions. The characteristics of thermal and hydropower units are illustrated in this unit. Non-smooth cost functions with multi-valve effect and with multi-fuel effect are briefly discussed. This chapter explains the mathematical formulation of economic load dispatch among various units by neglecting transmission losses,and it also gives an overview of the applications of various computational methods to solve the optimization problem. The flowchart required to obtain the optimal scheduling of generating units is also described here.
Chapter 3
looks at the derivation of the expression for
transmission loss and explains the mathematical determination of economic load dispatch taking transmission loss into consideration. The theory of
incremental transmission loss and penalty factor is clearly discussed. It also analyzes the optimal scheduling of generating units, determined with the help of a flowchart
Chapter 4
expounds on the optimal unit commitment
problem and its solution methods by taking a reliable example. Reliability and start-up considerations in optimal unit commitment problems are effectively discussed.
Chapter 5
explains the optimal power-flow problem
and its solution techniques with and without inequality constraints. In this chapter, inequality constraints are considered first on control variables, and then on dependent variables. Kuhn–Tucker conditions for the
solution of an optimal power flow are presented in this unit.
Chapter 6
spells out the important principle of hydrothermal scheduling and its classification. It discusses the general mathematical formulations and methods of
solving long-term and the short-term hydro-thermal scheduling problems
Chapter 7
deals with single-area load frequency
control. It describes the characteristics of the speed governor and its adjustment in case of parallel operating units. Generator controllers, namely, P–f and Q–V controllers, the speed-governing system model, the
turbine model, and the generator–load model and their block diagram representations are clearly discussed.Steady- and dynamic-state analyses of a single-area load frequency control system are also explained. The chapter also discusses the analysis of integral control of a single area load frequency control system.
