Voltage Quality

The course covers voltage quality in power transmission and distribution grids: Physical understanding, analysis and measurements of technical voltage quality elements in electrical transmission and distribution systems and their impact on customer loads and installation. The following voltage quality elements are addressed:
- Power frequency.
- Magnitude of the supply voltage
- Supply voltage variations
- Rapid voltage change
- Flicker severity
- Supply voltage dips
- Short interruptions of the supply voltage
- Supply voltage unbalance
- Harmonic voltages
Each phenomenon will be dealt with as follows: Theory, modeling, physical impact on the electricity system and the connected installations. How the different phenomena can be simulated and measured is also delta with as well as means for voltage quality problem mitigation.

Knowledge:
After completing the course, the student shall have:
- a physical understanding of the main voltage quality phenomena, such as frequency, magnitude of the supply voltage, voltage variations, rapid voltage changes, single rapid voltage change, flicker severity, voltage dips, short interruptions in the the supply, voltage unbalance and harmonic voltages.
- knowledge about the impact of these phenomena on customer loads and installations.
- knowledge about means for voltage quality problem mitigation.
Skills:
After completing the course, the student shall be able to:
- simulate, measure and analyse voltage quality phenomena.
- choose the appropriate means for voltage quality problem mitigation.

Lectures, selected topic presentation by each participant followed by discussions.Laboratory measurements. The course is given every second year, next time spring 2020.