IRE30821 High voltage technology and relay protection (Autumn 2024)
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
Compulsory subject in Bachelor's degree in engineering - electrical: electronics and green energy, field of study "digital power systems, as well as for TRESS and the Y-veien associated with this study program/field of study.
Recommended previous knowledge
IRE10521 Electrical circuits
Teaching semester
5th semester (autumn)
Content
- Dimensioning criteria for high-voltage insulation
- Electric field strength in various configurations
- Lightning surges
- Switching overvoltages
- Symmetrical components
- Transient conditions in the network and electrical machines during short circuits
- Types of relays, operation and setting
- Overcurrent protection, Differential protection, Impedance protection, special protection for electrical machines
- Calculation of short-circuit currents in the network based on the Impedance method
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
- understand relay scheduling
- understand the operation of various types of relay protection for grids and components in the energy supply
- Understand 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 design (analysis) calculations, relevant to the course topics.
- Approved 4 out of 6 exercises
Work requirements must be approved before the student can appear 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 rule A to F, where A is the best grade and F is not passed.
Examiners
External and internal sensor or two internal sensors.
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 3:01:03 AM