ELECTRICAL POWER QUALITY (18EE825)

ELECTRICAL POWER QUALITY 

Course Code 18EE825 
CIE Marks 40
Number of Lecture Hours/Week (L:T:P) 3:0:0 
SEE Marks 60
Credits 03 
Exam Hours 03

Course Learning Objectives:

· Review definitions and standards of common power quality phenomena.
· Understand power quality monitoring and classification techniques.
· Investigate different power quality phenomena causes and effects.
· Understand different techniques for power quality problems mitigation.
· Understand the various power quality phenomenon, their origin and monitoring and mitigation
methods.
· Understand the effects of various power quality phenomenon in various equipment’s

Module-1

Introduction: Power quality-voltage quality, power quality evaluation procedures term and definitions: general classes of power quality problems, transients, long duration voltage variation, short duration voltage variations, voltage imbalance, waveform distortion, power quality terms.  

Module-2 

Voltage sags and interruptions: Sources of sags and interruptions, estimating voltage sag performance, fundamental principles of protection, motor starting sags. Transient over voltages: Sources of transient over voltages, principles of over voltages protection, utility capacitor switching transients.

Module-3

Transient over voltages: Fundamentals of harmonics: Harmonic distortion, voltage versus transients, harmonic indexes, harmonic sources from commercial loads, harmonic sources from Industrial loads, effects of harmonic distortion, intra harmonics. 

Module-4

Applied harmonics: Harmonic distortion evaluations, principles for controlling harmonics, harmonic studies, devices for controlling harmonic distortion, harmonic filters, standards of harmonics.  POWER QUALITY BENCHMARK: Introduction, benchmark process, power quality contract.

Module-5

Power quality benchmark: power quality state estimation, including power quality in distribution planning. Distributed generation and quality: DG technologies, interface to utility system, power quality issues, interconnection standards. 

Course Outcome: At the end of the course the student will be able to:

· Define Power quality; evaluate power quality procedures and standards.
· Estimate voltage sag performance; explain principles of protection and Sources of transient over voltages.
· Identify various sources of harmonics, explain effects of harmonic distortion.
· Evaluate harmonic distortion, control harmonic distortion.
· Estimate power quality in distribution planning. Identify power quality issues in utility system.

Question paper pattern:

· The question paper will have ten questions.
· Each full question is for 20 marks.
· There will be 2 full questions (with a maximum of three sub questions in one full question) from each module.
· Each full question with sub questions will cover the contents under a module.
· Students will have to answer 5 full questions, selecting one full question from eachmodule.

Text Books:

1. Electric Power Quality Dugan, Roger C, Mark F McGraw-Hill professional publication 2003.

Reference Books:

1. Electric Power Quality G.T.Heydt Stars in a circle publications 1991.
2. Understanding power quality problems voltage sags and interruptions Math H. J. Bollen. IEEE Press 2000
3. Power quality in power systems and electrical machines Ewald F Fuchs, Mohammad, A.S., Masoum Academic Press, Elsevier 2009