Welcome to Electromagnetic Transients in Power Systems
Description: 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.
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. As a result, extensive investigations are made when installing new high voltage equipment, 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 through the use of examples and theoretical explanations. The respective countermeasures will be explained and examples given on how to select them.
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 choose the minimum modelling requirements for different transient phenomena.
Phenomena that will be studied in the course are:
- Basic RLC transients;
- Energisation and de-energisation of capacitor banks;
- 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;
- Resonances due to switching;
- Guidelines for network modelling;
Prerequisites: Master Degree in Electrical Power System or similar
Evaluation: A list of exercises to be delivered after the course will be given. The exercises will consist in the simulation and analysis of different phenomena in an EMTP-type software. Data will be provided for each phenomenon.
Link: http://www.et.aau.dk/phd/phd-courses/
Organizer and lecturer: Associate Professor Filipe Miguel Faria da Silva, e-mail: ffs@et.aau.dk
ECTS: 3
Time: 24-26 January 2018
Place: Aalborg University
Zip code: 9220
City: Aalborg Øst
Number of seats: 20
Deadline: 3. January 2018
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 5,000 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 three 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.
- Teacher: Filipe Miguel Faria da Silva