Power systems are constantly subjected to disturbances and switching actions. These actions can go from a normal connection/disconnection of a load or line, to the opening of a faulted line after a short circuit or the incidence of lightning strokes, among others. These events are known as electromagnetic transients and have a short duration in the range of microseconds/milliseconds, typically.

Even being short duration phenomena, electromagnetic transients are of fundamental importance, as the system is subjected to high currents, voltages and frequencies during those micro/milliseconds, which may damage the electrical equipment and put them out-of-service. As a result, extensive investigations are made when installing new high voltage equipment as transformers or new lines, in order to assure that the equipment is not subjected to high stresses.

The participants in the course will learn how to analyse electromagnetic transients and different transient phenomena will be explored using examples and real-life cases. When relevant, the respective countermeasures will be explained and examples given on how to do the respective choice.
The course will also focus in the use of software tools for the simulation of the transients, more specifically EMTDC/PSCAD, which will be introduced and explained during the course. The importance of having a proper modelling of the equipment (e.g., overhead lines, underground cables, transformers, …) in function of the phenomena will be demonstrated and guidelines will be provided on how to define the modelling requirements for different transient phenomena.

Phenomena that will be studied in the course are:

  • Energisation and de-energisation of capacitor banks, shunt reactors, lines, transformers, …;
  • Travelling waves and switching phenomena;
  • Particularities of switching in HVAC cables (zero-missing, influence of bonding, etc…);
  • Energisation of transformers (inrush currents and other resonances);
  • Lightning simulation and back flashover;
  • Fault transients;
  • Impact of resonance points;
  • Guidelines for network modelling:
    • Network size;
    • Modelling precision;
    • Model validation;

Prerequisites: Master degree in Electric Power Systems or similar

Form of evaluation: Several exercises consisting in the simulation and analysis of different phenomena in an EMTP-type software must be done after the course. The attendees are expected to do a proper simulation of the phenomena, to comment the results and to propose solutions to the main issues, in a manner similar to an insulation co-ordination study.

Organizer: Associate Professor Filipe Faria da Silva,

Lecturers: Associate Professor Filipe Faria da Silva, Aalborg University


Time: 12-14 October 2022

Place: AAU Energy, Aalborg

Price6000 DKK for PhD students outside of Denmark and 8000 DKK for the Industry excl. VAT

Number of seats: 15

Deadline: 29 September 2022

Important information concerning PhD courses:
We have over some time experienced problems with no-show for both project and general courses. It has now reached a point where we are forced to take action. Therefore, the Doctoral School has decided to introduce a no-show fee of DKK 3.000 for each course where the student does not show up. Cancellations are accepted no later than 2 weeks before start of the course. Registered illness is of course an acceptable reason for not showing up on those days. Furthermore, all courses open for registration approximately four months before start. This can hopefully also provide new students a chance to register for courses during the year. We look forward to your registrations.