EG2120 FACTS and HVDC in Electric Power Systems 7.5 credits

FACTS och HVDC i elkraftsystem

The course starts with a review of static and dynamic issues in power systems. Then FACTS and HVDC are presented and it is shown how these components may be a technical solution to the described issues. It will be discussed in the course how FACTS and HVDC are designed and also what functions they have. Basic mathematical models and control strategies are presented and used to analyze the impact of theses components on power system stability.

  • Education cycle

    Second cycle
  • Main field of study

    Electrical Engineering
  • Grading scale

    A, B, C, D, E, FX, F

At present this course is not scheduled to be offered.

Intended learning outcomes

To pass the course students need to show in a written report and orally that they are able to

• describe how FACTS and HVDC are designed,

• explain their functions and abilities,

• derive basic mathematical models for these components, and apply these models to load flow, modal analysis and transient stability analysis,

• present and apply different control strategies to these devices,

• present, describe and explain results of simulations about the impact of these devices on power system stability, and power oscillation damping,

• critically analyze other related projects.

Course main content

FACTS (Flexible AC Transmission System) and HVDC (High Voltage Direct Current) transmission are power electronics-based devices whose functions are to enhance the capacity, security and flexibility of power transmission systems. Application of these components in power systems implies an enhancement of transient and voltage stability, increase of power oscillation damping (POD) and improvement of power flow under undisturbed or post-fault conditions. The course starts with a short review of some issues (or problems) that an electric power system may face.  Next it is discussed how these components are designed and what their main properties are.  The following lectures focus on the use of the FACTS and HVDC transmission as technical solution to the issues described earlier.  Basic mathematical models and control strategies used to analyze the impact of these devices on power system stability are presented.  Most part of the analysis is dedicated to POD which is the main topic of this course. Lectures for the use of the main features of the necessary software are scheduled.


Lectures, project work hours, and examination


EG2110 Power system stability and control,  EJ2301 Power electronics, also documented proficiency in English B, English 6 or equivalent.


M. Ghandhari, et al., "The Impact of FACTS and HVDC Systems on Transient Stability and Power Oscillation Damping"


  • PRO1 - Project, 7.5, grading scale: A, B, C, D, E, FX, F

The examination consists of

P1. written report,

P2. written opposition, and also oral presentation and opposition.

Requirements for final grade

Approved P1 and P2.

Offered by

EECS/Electrical Energy Engineering


Muhammad Taha Ali (


Mehrdad Ghandhari Alavijh <>

Supplementary information

The course responsible evaluates all applicants to the course. Please contact course responsible before admitting any student to the course.


Course syllabus valid from: Spring 2019.
Examination information valid from: Spring 2019.