Power Quality: VAR Compensation in Power Systems, 1st Edition (Hardback) book cover

Power Quality

VAR Compensation in Power Systems, 1st Edition

By R. Sastry Vedam, Mulukutla S. Sarma

CRC Press

304 pages | 101 B/W Illus.

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Hardback: 9781420064803
pub: 2008-08-13
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pub: 2017-12-19
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Both deregulation in the electrical supply industry and the creation of new electricity markets present electric utility companies with the challenge of becoming more efficient without compromising quality of service.

Providing new solutions for this newly deregulated paradigm, Power Quality: VAR Compensation in Power Systems presents comprehensive coverage of power quality, harmonics, and static var compensators in one single volume. The book explains how to ensure that power quality is not affected by the harmonics generated by power electronic equipment and explains how to reduce labor costs and increase reliability of supply by employing a single pole autoreclosing scheme. It also addresses how to analyze frequency response of current transformers and voltage transformers while measuring harmonics.

Based on the authors’ extensive experience in the electric supply industry, Power Quality enables engineers to meet the demands of increased loads, strengthen their transmission systems, and ensure reliable electric supply.

Table of Contents

Power Quality

Importance of Power Quality

Common Disturbances in Power Systems

Short-Duration Voltage Variation

Long-Duration Voltage Variations




DC Offset



Voltage Fluctuations

Power Frequency Variations

Solutions to Power Quality Problems

Ambiguous Terms

CBEMA and ITI Curves

Features of Voltages in Power Systems


Reactive Power in Power Systems with Harmonic Distortion


Power Quality Data Collection

Static Var Compensators

Static Var Compensator Systems Versus Synchronous Condensers, Capacitors, and Reactors

Shunt and Series Compensation

Fundamentals of Load Compensation

Reactive Power Relationships Between Wye- and Delta-connected Systems

Static Var Compensators for Transmission Systems

A Case Study (Australia): Central Queensland Railway Project

Chester–Maine SVC Project

Control of Static Var Compensators

Control Systems for SVCs in Transmission System Applications

Control Systems for SVCs in Traction Applications

Phase-Locked Oscillator Control System

Implementation Details of a Programmable High-Speed Controller


Converter Harmonics

Single-Phase Power Supplies

DC Drives

AC Drives

Pulse Width Modulation (PWM)

Telecontrol Signals



Harmonics in Rotating Machines

Harmonics in arc Furnace Loads

Harmonic in a Thyristor-Controlled Reactor

The K-Factor

Utility Harmonic Regulations and Standards

Undesirable Effects of the Harmonics

Specification of the Harmonic Limits

Philosophical Differences between IEEE 519-1992 and IEC 61000 Series Standards

IEEE 519-1992

IEC 61000 Series Standards

General Comments on the Standards

Application of the Standards

Examples of the Harmonic Studies

Harmonic Filters

Undesirable Effects of Harmonics

Harmonic Sources

Types of Filters

AC Network Impedance

Design of Single-Tuned Filters

Design of Double-Tuned Filters

Filter Performance Evaluation

Design of Damped Filters

Filter Component Ratings

Computational Tools and Programs for the design and Analysis of Static Var Compensators and Filters

Computational Tools

Digital Computers

Analog Computers

Special Problems in the Simulation of Power Electronic Circuits

Transient Electrical Network Analyzers

Special-Purpose Simulators

Computer Programs


Monitoring Power Quality

Site Surveys


IEC-Recommended Measurement Techniques for Harmonics

Necessity for the Measurement of Harmonic Voltages and Currents

Harmonic Monitoring System

Continuous Harmonic Analysis in Real Time (CHART)

Presentation of Harmonic Measurements

Examples of Projects Needing Harmonic Monitoring in the Powerlink Queensland System, Australia


IEC Flicker Meter


Losses in the Power System

Switching Surges

Shunt Reactor Installations in EHV Lines

Determination of Shunt Reactor Rating

Choice of Voltage Level for Shunt Reactor Connection

Single-Pole Auto-Reclosing of Transmission Lines

Types of Reactors Based on their Function

Construction of Reactors


Capacitor BanksCapacitor Bank Connections

Protection of Capacitor Banks

Capacitor Bank Switching

Series Capacitors

Metal Oxide Varistors (MOVs)

Fast Fourier Transforms

Fourier Series

Symmetrical Properties of Waveforms

Sinc Function

Discrete Fourier Transform (DFT)

Fast Fourier Transform (FFT)

Cooley–Tukey Algorithm

FFT of Two Real Functions Simultaneously

Mixed Radix FFT

Split-Radix FFT

FFT Pruning

The Convolution Integral

Auto- and Cross-Correlation Functions

Pitfalls of the Discrete Fourier Transform

Guidelines for using FFT for Harmonic Analysis

Subject Categories

BISAC Subject Codes/Headings:
TECHNOLOGY & ENGINEERING / Electronics / General