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Syllabus ( ELEC 727 )


   Basic information
Course title: Electrical Transients In Power Systems
Course code: ELEC 727
Lecturer: Assist. Prof. Tuba GÖZEL
ECTS credits: 7.5
GTU credits: 3 (3+0+0)
Year, Semester: 1/2, Fall and Spring
Level of course: Second Cycle (Master's)
Type of course: Area Elective
Language of instruction: English
Mode of delivery: Face to face , Group study
Pre- and co-requisites: None
Professional practice: No
Purpose of the course: To give basic information related with transient overcurrents and overvoltages in electric power systems, due to lightning, short circuit faults, and switching phenomena; and calculation methods for the transients.
   Learning outcomes Up

Upon successful completion of this course, students will be able to:

  1. Compute, by means of computer, the magnitudes and obtain the waveshapes of transient voltages and currents due to lightning, switching and short-circuits

    Contribution to Program Outcomes

    1. Define and manipulate advanced concepts of Electronics Engineering
    2. Formulate and solve advanced engineering problems
    3. Review the literature critically pertaining to his/her research projects, and connect the earlier literature to his/her own results
    4. Acquire scientific knowledge
    5. Develop an awareness of continuous learning in relation with modern technology
    6. Effectively express his/her research ideas and findings both orally and in writing

    Method of assessment

    1. Written exam
    2. Homework assignment
  2. Observe, making use of Lattice diagrams, how traveling waves of transient voltages and currents travel along the transmission systems and how they vary depending on time and distance

    Contribution to Program Outcomes

    1. Define and manipulate advanced concepts of Electronics Engineering
    2. Formulate and solve advanced engineering problems
    3. Acquire scientific knowledge
    4. Design and conduct research projects independently
    5. Effectively express his/her research ideas and findings both orally and in writing

    Method of assessment

    1. Written exam
    2. Homework assignment
  3. Analyze how and under which conditions transient voltages and currents, which may reach to very high values, take place in power systems

    Contribution to Program Outcomes

    1. Define and manipulate advanced concepts of Electronics Engineering
    2. Formulate and solve advanced engineering problems
    3. Acquire scientific knowledge
    4. Effectively express his/her research ideas and findings both orally and in writing
    5. Demonstrate professional and ethical responsibility

    Method of assessment

    1. Written exam
   Contents Up
Week 1: Basic information about electrical transient voltages and currents.
Week 2: Simple switching transients.
Week 3: Simple switching transients.
Week 4: Damping of transients.
Week 5: Overvoltage due to switching transients. Inrush currents due to switching of circuits with capacitors and transformers.
Week 6: Transients taking place in 3-phase circuits.
Week 7: Travelling waves. Lattice diagrams. Switching transient currents and voltages taking place in electric power systems which include transmission lines.
Week 8: Travelling Waves. Lattice diagrams. Open-Close transient current and voltage at electric facilities with transmission lines.
Week 9: Mid-term Exam
Week 10: Methods of analysis of transients.
Week 11: Multi-velocity waves on multi-phase transmission lines.
Week 12: Calculation of overcurrents and overvoltage in electric power systems due to lightning.
Week 13: Protection against overvoltages using capacitors and reactors.
Week 14: Transients taking place in rotating machinery.
Week 15*: General review
Week 16*: Final Exam
Textbooks and materials: Greenwood, Allan, “Electrical Transients in Power Systems”,
2nd Edition, John Wiley and Sons, 1991.
Recommended readings: [1] Bickford, J. P., Mullineux, N., Reed, J.R. “Computation of Power
System Transients”, IEE Monograph Series 18, Peter Peregrinus Ltd, 1976
[2] W.Derek Humpage, “Z-transform Electromagnetic Transient Analysis in High Voltage Networks”, Peter Peregrinus Ltd.,1982.
[3] Ragaller, Klaus, “Surges ın High Voltage Networks”, Plenum Press, 1980
  * Between 15th and 16th weeks is there a free week for students to prepare for final exam.
Assessment Up
Method of assessment Week number Weight (%)
Mid-terms: 0
Other in-term studies: 0
Project: 9 40
Homework: 2,4,6,8, 9,10,12,13 30
Quiz: 0
Final exam: 16 30
  Total weight:
(%)
   Workload Up
Activity Duration (Hours per week) Total number of weeks Total hours in term
Courses (Face-to-face teaching): 3 14
Own studies outside class: 3 15
Practice, Recitation: 0 0
Homework: 4 8
Term project: 3 10
Term project presentation: 0 0
Quiz: 0 0
Own study for mid-term exam: 0 0
Mid-term: 0 0
Personal studies for final exam: 10 3
Final exam: 3 1
    Total workload:
    Total ECTS credits:
*
  * ECTS credit is calculated by dividing total workload by 25.
(1 ECTS = 25 work hours)
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