# ELE3341 - Electrical power systems and high voltage technic

### Examination arrangement

Examination arrangement: Oral exam

Evaluation Weighting Duration Grade deviation Examination aids
Oral exam 100/100 30 minutes E

### Course content

• Calculations of design criterias for highvoltage insulation
• Calculations of the electric field strength in various configurations
• Calculations of Lightning overvoltages and Switching Overvoltages and knowledge about protection against these overvoltages.

Knowledge of the structure of the components of:

• Distribution networks with distribution network station
• Regional grid with transformer station
• Main Grid with switchgear
• Calculations of: - Inductors for overhead lines
• Capacitances of overhead lines and cables
• Voltage and power loss in the wires
• Phase Compensation
• Radial networks using per.unit calculations
• Be able to establish node-matrixes for power-flow calculations.

### Learning outcome

After completing the course the student is meant to have:

• the theoretical basis for calculating voltage stresses in electrical high voltage grid.
• the theoretical basis for calculating voltage drop and losses in power grids.
• the theoretical basis for designing measures to reduce voltage drop and network losses.

After the course the students should have knowledge about:

• infrastructure, voltage levels and use of components and equipment for high voltage transmission and distribution in Norway.
• material properties that are important for electrical stress of high voltage insulation and the most widely used insulation materials.
• simplified theoretical models for calculating estimates of stresses of electrical equipment during normal operation, temporary overvoltages, atmospheric surges and switching surges in the grid.
• simplified calculation of circuit parameters like resistance, inductance and capacitance for use in single-phase line models.
• application of different line models due to the length of power lines.
• application of models for transformers voltage fall and loss calculations.
• the principles of load flow calculations in meshed networks.
• what is meant by Norton_Raphson iteration and the priciples of how this is used in load flow calculations .

Skills:

• be able to learn and comply with the safety instructions for laboratory work.
• be able to perform laboratory work.
• communicate laboratory work in a technical report on a verifiable manner.
• calculate the voltage drop and losses in radial networks.
• calculate phase compensation to improve voltage drop and network losses.
• apply per unit model when calculating voltage drop and network losses.
• establish node-matrixes of meshed grids and apply Thevenin and Norton models.

General competence:

• be able to discuss society issues due to electric power delivery.

### Learning methods and activities

Web-based learning

There is no mandatory work, only recommendations as simulations and recommended tasks and exercises.

### Further on evaluation

Re-sit of oral exam in February/Mars. Be aware that the final oral exam will be given autumn 2023.

### Specific conditions

Admission to a programme of study is required:
Electrical Engineering (BIELEKTRO)
Engineering - Electrical (BIELE)
Engineering- Electric Power (BIELKR-F)
Power Engineering (VELKRAFT)

### Course materials

Lasse Sivertsen Høyspenningssystemer ISBN 978-82-450-3353-3

More on the course

Facts

Version: 1
Credits:  10.0 SP
Study level: Third-year courses, level III

Coursework

Term no.: 1
Teaching semester:  AUTUMN 2022

Language of instruction: Norwegian

Location: Gjøvik

Subject area(s)
• Electrical Power Engineering
Contact information
Course coordinator: Lecturer(s):

Department of electric energy

# Examination

#### Examination arrangement: Oral exam

Term Status code Evaluation Weighting Examination aids Date Time Examination system
Autumn ORD Oral exam 100/100 2022-12-01 09:00
Spring UTS Oral exam 100/100 2023-03-16
• * The location (room) for a written examination is published 3 days before examination date. If more than one room is listed, you will find your room at Studentweb.
Examination

For more information regarding registration for examination and examination procedures, see "Innsida - Exams"

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