IRE30821 High voltage technology and relay protection (Autumn 2027)
Facts about the course
- ECTS Credits:
- 10
- Responsible faculty:
- Faculty of Computer Sciences, Engineering and Economics
- Campus:
- Fredrikstad
- Course Leader:
- Nand Kishor
- Teaching language:
- English
- Duration:
- ½ year
Table of contents
The course is affiliated to the following study programme
Elective course for the class of 2025-2028 and onwards in the Bachelor’s degree in Engineering - Electrical: Electronics and Green Energy, as well as for TRESS and the Y-veien pathways associated with this study programme.
Recommended previous knowledge
IRE10521 Electrical circuits (10 ECTS) or IRE10725 Electrical Circuits 1 (5 ECTS) and IRE10825 Electrical circuits 2 (5 ECTS)
Teaching semester
5th semester (autumn)
Content
- Impedance/reactance diagram, Calculations
- Fault analysis: calculation of short-circuit currents in the network based on the Impedance method, Calculations
- Symmetrical components
- High voltage and current generation sources
- Overvoltages occurrances: Lightning surges, Switching overvoltages
- Travelling waves, bewley lattice diagram, Calculations
- Over voltage protection: Insulation coordination, Calculations
- Over current protection: Relay coordination- time, current and time-current grading, Calculations.lays, operation and setting
The student's learning outcomes on passing the course
Knowledge
The student
- has a theoretical basis for being able to perform short-circuit calculations in high-voltage power systems
- can calculate fault current/the setting of protection in simple high-voltage networks
- knows material properties that are important for the electrical stress of high-voltage insulation and knowledge of the most commonly used insulation materials.
- can apply and understand simplified theoretical models for calculation/estimate for voltage stresses of electrical equipment during operational stress, temporary overvoltages, atmospheric overvoltages and switching overvoltages in the network.
- understands load flow calculation approach, perform insulation coordination calculation.
Skills
The student
- can carry out short-circuit analyzes using symmetrical components
- can use the per unit model when calculating voltage drops and losses in the grid.
- can perform calculations for fault current in the power network, insulation coordination, travelling wave transients.
General competence
The student
- understands relay scheduling
- understands the operation of various types of relay protection for grids and components in the energy supply
- understands procedure for insulation coordination in a substation.
Teaching and learning methods
The subject is taught through lectures, exercises and laboratory assignments. Parts of the subject can be given as online teaching in combination with video conference.
Workload
250-300 hours
Coursework requirements - conditions for taking the exam
- 1 group report from laboratory assignments/Assigned Group Project topic (analysis) calculations, relevant to the course topics.
- Approved 4 out of 6 exercises/assignments
Required coursework is assessed as approved/not approved. Required coursework must be approved before the student can sit for the exam.
Exam
Written exam, individual. Duration: 5 hours
Allowed aids: Issued formula sheet. Calculator, with empty memory, which cannot calculate symbolically or communicate wirelessly.
Grading scale: A-F.
Examiners
Internal or external examiners.
Conditions for resit/rescheduled exams
The account examination is held early in the following semester. You can find more information about accounts here.
Course evaluation
Ongoing evaluation of the teaching throughout the semester, where the method of evaluation is agreed between the subject teacher(s) and students. Written final evaluation of the course.
Reading list
The current reading list for 2024 Autumn can be found in Leganto
Last updated from FS (Felles studentsystem)
Oct. 15, 2026 8:24:59 AM