Events at Department of Energy Technology

Industrial/PhD Course: Electromagnetic Transients in Power Systems

Time

24.01.2018 kl. 08.30 - 26.01.2018 kl. 16.00

Description

Organiser

Filipe Miguel Faria da Silva

Lecturers

Filipe Miguel Faria da Silva

ECTS: 3
 

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.

Registration

https://phd.moodle.aau.dk

Price

6000 DKK for PhD students outside of Denmark and 1500 DKK for PhD students in Denmark, who are not from AAU. 8000 DKK for the Industry.

Host

Department of Energy Technology

Address

Aalborg University, Pontoppidanstræde 111, room 1.177, 9220 Aalborg East