MSc in Electrical Engineering

Course Information Package

Course Unit CodeAEEE533
Course Unit DetailsMSc Electrical Engineering (Technical Electives) -
Number of ECTS credits allocated7
Learning Outcomes of the course unitBy the end of the course, the students should be able to:
  1. Analyse types and operation of switchgear, isolators, circuit breaker operation and design.
  2. Analyse and assess operating characteristics of fuses, protecting radial feeder circuit with fuses.
  3. Calculate parameters regarding unit, non-unit protection, zones of protection, backup protection.
  4. Analysis of IDMT (inverse definite medium time) relay types.
  5. Calculation of relay current settings, relay time settings. Sizing a relay for a specific application.
  6. Determine characteristics, applications and limitations of power system transducers.
Mode of DeliveryFace-to-face
Recommended optional program componentsNONE
Course Contents

Introduction to protection: types of protection systems and protection device design (oil, air, vacuum, and sf6). Introduction to protection principles.


Fuse: operating characteristics of a fuse, rupture time, energy let through, use of fuses for protection of radial feeders.


The protection overlay: unit protection, circulating current , voltage balanced differential scheme, non-unit protection, zones of operation of protection device, primary and secondary protection, dual/main protection schemes.


Overcurrent relays: IDMT operating characteristics, static and digital relays.


Relay application for protection of feeder circuits: relay current settings (min, max, chosen), time multiplier setting, protection of feeder circuits, parallel feeders.


Power system transducers: current transformers, operation, saturation, voltage transformers, errors, tests associated with protection.


Recommended and/or required reading:
  • Power system protection , IEEE press series on Power engineering, 1999, Paul, M. Anderson, IEEE
  • Elements of power system analysis, William D, Stevenson Jr, 4th ed. Mc Graw-Hill, 2002
  • Electric Power Distribution equipment and Systems,T.A.Short, Taylor and Francis, 2006,CRC Press
  • E. Hughes, Electrical technology , Longman, 1995
  • Power system Analysis Second Edition, Hadi Saadat, McGraw-Hill, 2002
Planned learning activities and teaching methods

Students are taught the course through lectures (3 hours per week) in classrooms or lectures theatres, by means of traditional tools or using computer demonstration.

Auditory exercises, where examples regarding matter represented at the lectures, are solved and further, questions related to particular open-ended topic issues are compiled by the students and answered, during the lecture or assigned as homework.

Topic notes are compiled by students, during the lecture which serve to cover the main issues under consideration. Students are also advised to use the subject’s textbook or reference books for further reading and practice in solving related exercises. Tutorial problems are also submitted as homework and these are solved during lectures or privately during lecturer’s office hours.

Students are prepared for final exam, by revision on the matter taught, problem solving and concept testing and are also trained to be able to deal with time constraints and revision timetable. The final assessment of the students is formative and is assured to comply with the subject’s expected learning outcomes and the quality of the course.
Assessment methods and criteria
Tests-Assignments 40%
Final Exam60%
Language of instructionEnglish
Work placement(s)NO