Abstract
In order to study accumulated surface charge effect on DC cone-type spacers, a simulation model of cone-type spacers which are used in GIL lines was built to yield the electric field data with the software Maxwell 2D. Finite element method was used for analysis. The simulation results show the change of electrostatic field when different polarities and amounts of surface charges occur on different locations of cone-type spacers. Different polarities of surface charges can lead to different influences, different locations which the surface charges occur on also lead to different influences. When the amount of accumulated surface charges reaches a certain lever, it may lead to the degradation of insulation performance. The amount of surface charges on cone-type spacers is reduced by degrees in the simulation until the electric field after the surface charge generated is almost as the original electric field. The amount of surface charge at this time can be accepted as the allowable value.
| Original language | English |
|---|---|
| Pages (from-to) | 335-339 |
| Number of pages | 5 |
| Journal | Gaodianya Jishu/High Voltage Engineering |
| Volume | 36 |
| Issue number | 2 |
| Publication status | Published - Feb 2010 |
| Externally published | Yes |
Keywords
- Accumulation
- Cone-type spacers
- FEM
- GIS
- Simulation
- Surface charge