MSc in Electrical Engineering

Course Information Package

Course Unit TitleFAULTED POWER SYSTEMS
Course Unit CodeAEEE532
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 per unit quantities, changing the base of per-unit quantities, per unit analysis of power systems.
  2. Analyse structure of power systems, need for power system fault analysis, and characteristics of power system faults.
  3. Calculate balanced three-phase current and voltage phasors, symmetrical components of unbalanced voltage and current phasors, apparent power in symmetrical component terms, sequence components of balanced / unbalanced three-phase impedances, advantages of symmetrical components frame of reference.
  4. Analysis of balanced three-phase to earth short-circuit faults, balanced three-phase clear of earth short-circuit faults, unbalanced one-phase to earth short-circuit faults, unbalanced phase-phase or two-phase short-circuit faults, unbalanced two-phase to earth short-circuit faults, unbalances one-phase open circuit faults, unbalances two-phase open circuit faults.
  5. Determine the impact of one-phase to earth short-circuit faults, two-phase to earth short-circuit faults.
  6. Analyse simultaneous short-circuit faults at the same locations, simultaneous short-circuit faults at different locations, simultaneous short-circuit and open circuit faults at the same locations, simultaneous short-circuit and open circuit faults at distribution transformers.
Mode of DeliveryFace-to-face
PrerequisitesAEEE521,AEEE522Co-requisitesNONE
Recommended optional program componentsNONE
Course Contents

Review of per unit system: per unit quantities, changing the base of per-unit quantities, per unit analysis of power systems.

 

Introduction to power systems faults: structure of power systems, eed for power system fault analysis, characteristics of power system faults

 

Symmetrical components of a three-phase power system:     balanced three-phase current and voltage phasors, symmetrical components of unbalanced voltage and current phasors, apparent power in symmetrical component terms, sequence components of balanced / unbalanced three-phase impedances, advantages of symmetrical components frame of reference

 

Analysis of balanced and unbalanced faults: balanced three-phase to earth short-circuit faults, balanced three-phase clear of earth short-circuit faults, unbalanced one-phase to earth short-circuit faults, unbalanced phase-phase or two-phase short-circuit faults, unbalanced two-phase to earth short-circuit faults, unbalances one-phase open circuit faults, unbalances two-phase open circuit faults

 

Fault analysis: one-phase to earth short-circuit faults, two-phase to earth short-circuit faults

 

Sequence impedances: of transmission lines, machines and transformers.

 

Simultaneous faults: simultaneous short-circuit faults at the same locations, simultaneous short-circuit faults at different locations, simultaneous short-circuit and open circuit faults at the same locations, simultaneous short-circuit and open circuit faults at distribution transformers

 

Recommended and/or required reading:
Textbooks
  • Power Systems Modelling and Fault Analysis, N. Tleis, Newnes, 2008.
References
  • Protection of Electricity Distribution Networks, J. Gers, E. Holmes, 2/E, IEE publ., 2005
  • Power Systems Analysis, H. Saadat, McGraw Hill, 2/E, 2004
  • Overvoltage Protection of Low-voltage Systems, P. Hasse, 2/E, IET, 2008
  • “Elements of Power System Analysis”, by Stevenson, McGraw-Hill
  • Digital Protection for Power Systems, A.T. Johns and S.K. Salman, IEE publ.,1997
  • Analysis of Faulted Power Systems, Anderson M.P., IEEE Press, 1995
  • Power System Analysis, Grainger J., McGraw Hill, 1/E, 1994
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-Assignmants40%
Final Exam60%
Language of instructionEnglish
Work placement(s)NO