Single-Course English 10 ECTS

Introduction to Electric Power Systems

Overall Course Objectives

To give basic understanding of the power system and the essential aspects having influence on issues like the future electrical power system.
The students achieve knowledge about the power grid and the main components involved under production, transmission and distribution of electric energy. The main principles and numerical tools for grid calculations are treated and will give experience and confidence for use hereof.
The course forms the base for further education within power engineering, but is in general useful for all students aiming at some specialization within electrical energy systems.

Learning Objectives

  • Identify differences between a simple electric circuit and a three-phase power system
  • Explain the structure of a power system
  • Describe power system components and explain their functions
  • Select appropriate models for power system components
  • Calculate power system quantities by means of the per-unit system
  • Determine operational limitis in a power system
  • Calculate balanced three-phase short circuit currents
  • Explain the power flow problem and approaches to solve it
  • Summarize operation principles of a power system in terms of control of voltage, active and reactive power
  • Design a realistic power system
  • Evaluate the overall performance of a power system under different operating scenarios by means of a power flow program

Course Content

– Power grid
– AC circuits, 3-phase systems, power considerations
– Components in the grid like transmission lines, cables, transformers, generators and more.
– Power flows and tools for simulation
– Symmetrical faults

The topics from the text book can be supported by topics from related areas.

In the project, a realistic problem will be defined and has to be solved by means of the numerical simulation program PowerFactory (load flow) with graphical user interface.

Recommended prerequisites

Basic knowledge within AC-circuits and main AC components.

Teaching Method

a) Lectures and group exercises in connection with the lectures
b) Assignments to be handed in every second week
c) Power Flow simulations. Group projects, where the power system will be investigated by modelling of af minor, realistic grid. Participation in the project and quality of the work will be evaluated by a number of peer-to-peer meetings.


See course in the course database.





13 weeks




DTU Lyngby Campus

Course code 46700
Course type Candidate
Semester start Week 35
Semester end Week 48
Days Tues 13-17, Fri 8-12

15.000,00 DKK