HARMONIC REDUCTION IN POWER SYSTEM Ankit Vashi B.E. ...

TABLE OF CONTENTS
List of Figures………………………………………………………………………...vii
Chapters
1. INTRODUCTION……………………………...................................................1
2. CAUSE OF POWER QUALITY DETERIORATION……………………….2
2.1 Introduction……………………………………………………….2
2.2 Transients………………………………………………………….3
2.2.1 Oscillatory Transients…….……………………………..3
2.2.2 Impulsive Transients…………………………………….3
2.3 Variations in Voltage………………………………………….......4
2.3.1 Short Duration Voltage Variations……………………...4
2.3.2 Long Duration Voltage Variations……………………...5
2.4 Harmonics………………………...……………………………….6
2.4.1 Active Harmonic Filter………………………………….8
2.4.2 Passive Harmonic Filter………………………………....8
3. FILTERS USED IN POWER SYSTEM…..…………………………………..10
v
Page
3.1 Introduction……………………………………………………….10
3.2 Roles of Filters in Power System………………………………….11
3.3 Passive Filters………………………………………………….......11
3.3.1 Types of Passive Filters………………………………….13
3.4 Active Filters………………………………………………….…...17
4. HARMONIC REDUCTION IN INVERTERS……………………………..20