| Autor: |
Li Yasha, Chen Jiamao, Chen Kai, Wang Huiyao |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Recent Advances in Electrical & Electronic Engineering (Formerly Recent Patents on Electrical & Electronic Engineering). 14:114-121 |
| ISSN: |
2352-0965 |
| DOI: |
10.2174/2352096513999200807162151 |
| Popis: |
Background: Electrical trees can affect the distribution of electric field and space charge in cross-linked polyethylene (XLPE) cables, and play an important role in insulation aging and breakdown of cables. Therefore, it is important to study the influence of electrical trees in cables. Methods: In this study, the finite element method of second-order tetrahedral element and electromagnetic theory method is used for calculation. A model of XLPE cable with three-dimensional electrical trees is taken as an example for calculation. Results: The results show that the longer the trunk length is, the greater the electric field intensity at the end of the branch is; the farther the electrical trees are from the insulation side of the high voltage, the more the electric field intensity of each location decreases. Conclusion: With the increase of the resistivity of the trees, the electric field intensity and charge density tend to be stable at the end of the tree. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
