TET4180 - Power System Stability and Control


Examination arrangement

Examination arrangement: Portfolio assessment
Grade: Letters

Evaluation form Weighting Duration Examination aids Grade deviation
work 20/100
Written examination 80/100 4 hours D

Course content

The course aims to provide advanced knowledge about stability problems and dynamic mechanisms in electric power systems. This will give specialised insight and understanding of the theoretical foundations behind the physical phenomena that are necessary for modelling and control of power systems. After the course the student shall have gained skills to perform independent analysis and controller design for power systems based on state-of-the-art computer based methods and tools for dynamic analysis.

A group project work running through most of the semester is a major part of the home work to ensure a research based approach and problem based learning of the curriculum. MATLAB and DIgSILENT/PowerFactory are used as tools for modelling and simulation of various aspects of power system stability phenomena. The students work in groups of 2-3. The project is being graded and together with the written exam for the final evaluation.

Learning outcome

After completing this course the candidate should:
- possess advanced knowledge about methods for dynamic power system analysis, including steady state and transient stability.
- possess advanced knowledge of modelling of synchronous machines for dynamic analysis (in steady state operation and during grid faults).
- have specialised insight and understanding of power-frequency control and voltage control using detailed models of turbines, generators and network. Emphasis on modelling of synchronous machines with excitation systems and hydro turbines including penstock and hydraulic system.
- have specialised insight and understanding of the principles for primary control, including modelling of turbine governors and voltage controllers.
- have specialised insight and understanding of the principles for secondary control, including setpoint control of active power and voltage, active reserves and load following control.
- possess advanced knowledge of modelling and dynamic analysis of large power systems, in particular power system damping issues involving modal analysis.
- know the construction and application of FACTS components.

After completing this course the candidate should be able to:
- perform independent analysis on stability of power systems using linear analysis methods and the equal area method.
- apply advanced computer simulation tools for dynamic analysis of large power systems.
- establish the differential equations describing one machine infinite bus systems and perform detailed analyses of such systems.
- use control engineering methods for design and tuning of turbine governors and voltage controllers.
- perform advanced analysis related to frequency control and reserve requirements in a synchronously interconnected power grid.

General competence:
After completing the course, the candidate has increased:
- skills in cooperation and interdisciplinary collaboration
- ability to communicate effectively to professionals and non-specialists alike through reports and presentations
- ability to contribute to innovation and innovation processes

Learning methods and activities

Lectures. Compulsory exercises and computer simulations. Compulsory project work.
The course is given in English.

Compulsory assignments

  • Øvinger

Further on evaluation

The final evaluation will be based on a written examination (counting 80%) and a project (counting 20%) based on % fulfillment. Final grading will be from A to F.
If there is a re-sit examination, the examination form may change from written to oral.
In the case that the student receives an F/Fail as a final grade after both ordinary and re-sit exam, then the student must retake the course in its entirety. Submitted work that counts towards the final grade will also have to be retaken.
Permitted examination aids, support material code D: No printed or hand-written support material is allowed. A specific basic calculator is allowed. In addition, calculator Casio fx-991EX is allowed.

Specific conditions

Exam registration requires that class registration is approved in the same semester. Compulsory activities from previous semester may be approved by the department.

Course materials

Book: Power System Dynamics and Stability, J Machowski; J Bialek, J Bumby, John Wiley & Sons, ISBN:0470725583, 2nd edition. Lecture notes. Written assignments and computer programs.

Credit reductions

Course code Reduction From To
SIE1060 7.5


Examination arrangement: Portfolio assessment

Term Statuskode Evaluation form Weighting Examination aids Date Time Room *
Spring ORD work 20/100
Spring ORD Written examination 80/100 D
  • * 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.