Course - Electric Conductivity, Dielectric Losses and Breakdown of Solid and Liquid High Voltage Insulation - ET8100
Electric Conductivity, Dielectric Losses and Breakdown of Solid and Liquid High Voltage Insulation
About
About the course
Course content
The following main topics are covered:
-Electrical conduction in glass, oil and other amorphous dielectrics due to movement of ions and particles.
-Electronic conduction in partly crystalline solid materials, focusing on influense of applied electric field and temperature. Schottky, Poole-Frenkel and Spacecharge limited currents are particularly discussed.
-Physical description of Permittivity and dielectric loss with respect to Clausius Mosottis equations, the Debye relaxation, Garton effects,ion and interface polarisation as basis for frequency and time domain description of dielectric responce.
-Electric breakdown of solid and liquid dielectrics, including statistical methods for evaluation of breakdown data.
-The course will focus on description of mechanisms regarding the commonly used insulating materials: Polymers, oil/paper and glass.
Learning outcome
The purpose of the course is to give an indepth review of limiting factors regarding application of different dielectric materials in High voltage apparatus.
Knowledge:
1.Mechanisms of electrical conduction.
2.Physical description of permittivity and dielectric loss.
3.Mechanisms of electric breakdown.
4.Methods of statistical evaluation of breakdown data.
Skills:
Ability to plan experimental investigations and interprete results with respect to physical mechanisms of electrical conduction,-loss and brakdown.
General Competence:
Ability to develope and design new high voltage insulation systems for AC and DC power apparatus.
Learning methods and activities
Lectures / Seminars/ Exercises.
The course will be given in English if necessary.
The course is given every second year, next time spring 2012.
Course materials
Compendium
Subject areas
- Electrical Power Engineering
Contact information
Course coordinator
- Erling Ildstad