University of Malta

Study-Unit Description
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TITLE Power Quality

LEVEL 03 - Years 2, 3, 4 in Modular Undergraduate Course


DEPARTMENT Industrial Electrical Power Conversion

DESCRIPTION This study-unit describes the application of the study and analysis of power quality issues with respect to electrical engineering. The following topics are studied in this unit:

- Power Quality Definitions
- Power Factor Correction: Power Factor, Active and Reactive Power, Displacement and True Power Factor, Power Factor Improvement, Power Factor Correction Voltage Rise Due to Capacitance, Static VAR Compensators, Application of Synchronous Condensers
- Harmonics and Basics of EMI: Harmonics produced by non-linear equipment and the European regulations will be covered. Harmonic Phase Rotation and Phase Angle Relationship, Causes of Voltage and Current Harmonics, Harmonic Signatures(Fluorescent Lighting , Adjustable Speed Drives, Personal Computer and Monitor, etc). Effect of Harmonics on Power System Devices (Transformers, AC Motors, Capacitor Banks, etc..), Electrical & Magnetic Fields, Electromagnetic Interference Terminology (Decibel (dB), Radiated Emission, Conducted Emission, Common Mode Rejection Ratio, Common Mode Noise , etc.)
- Other power quality issues: Transients, Long and Short voltage variations, flicker, imbalance, distortion, frequency variations.
- Measurement of Power Quality: Harmonic Analyzers, Transient-Disturbance Analyzers, Data Loggers and Chart Recorders, True RMS Meters, Power Quality Measurements

Study-unit Aims:

The aims of the study-unit are to present the electrical engineering student with knowledge in the areas of:
Power Quality Measurement and Regulations, Power Factor Correction, Harmonics and Basics of EMI, and various other power quality occurrences such as :Transients, Long and Short voltage variations, flicker, imbalance, distortion, frequency variations.

Learning Outcomes:

1. Knowledge & Understanding:

By the end of the study-unit the student will be able to:
- carry out power quality related measurements,
- identify and quantify the measurements,
- calculate the elements required for correction.

2. Skills:

By the end of the study-unit the student will be able to:
- use equipment related to power quality related measurements,
- use software for identification and quantification of the measurements.

Main Text/s and any supplementary readings:

- Electrical Power Systems Quality, H. Wayne Beaty, Roger C. Dugan.
- Power Quality in Electrical Systems, Alexander Kusko, Marc Thompson.
- Harmonics and Power Systems, Francisco C. De La Rosa.

ADDITIONAL NOTES Pre-requisite Study-units: EPC1202, EPC2101

STUDY-UNIT TYPE Lecture, Laboratory Session and Tutorial

Assessment Component/s Resit Availability Weighting
Assignment No 15%
Examination (2 Hours) Yes 85%

LECTURER/S John Licari
Cyril Spiteri Staines

The University makes every effort to ensure that the published Courses Plans, Programmes of Study and Study-Unit information are complete and up-to-date at the time of publication. The University reserves the right to make changes in case errors are detected after publication.
The availability of optional units may be subject to timetabling constraints.
Units not attracting a sufficient number of registrations may be withdrawn without notice.
It should be noted that all the information in the study-unit description above applies to the academic year 2017/8, if study-unit is available during this academic year, and may be subject to change in subsequent years.

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