Abstract
The use of extruded insulation for DC cables involves a risk of local electric field enhancement, caused by a space charge build-up within the dielectric. In this work, the theory of charge generation and transport in polymers is applied in a numerical computer model in order to predict the formation and transport of space charges in a polymeric dielectric. The model incorporates the processes of field assisted electron-hole pair generation from impurity atoms, trapping and charge injection at the electrodes. Its aim has been to study the field- and temperature dependent dynamic behaviour of a dielectric. Results obtained using this model-based framework are compared to measurement results obtained from Laser Induced Pressure Pulse (LIPP) space charge measurements as well as conductivity measurements on selected cable type samples.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 11. International Symposium on Electrets |
| Publisher | IEEE |
| Publication date | 2002 |
| Pages | 23-26 |
| ISBN (Print) | 0-7803-7560-2 |
| DOIs | |
| Publication status | Published - 2002 |
| Event | 11th International Symposium on Electrets - Melbourne, Australia Duration: 1 Oct 2002 → 3 Oct 2002 Conference number: 11 |
Conference
| Conference | 11th International Symposium on Electrets |
|---|---|
| Number | 11 |
| Country/Territory | Australia |
| City | Melbourne |
| Period | 01/10/2002 → 03/10/2002 |
Keywords
- Space charge
- Dielectric measurements
- Charge measurement
- Dielectrics and electrical insulation
- Cable insulation
- Current measurement
- Polymers
- Pulse measurements
- Pressure measurement
- Conductivity measurement