Abstract
The effect of high-frequency harmonic voltage on the temperature and electric field of 35 kV cable termination is investigated and the relationship between hot spot and electric field distribution is analyzed. Voltages of different frequencies are exerted on the cold-shrinkable cable terminations of two types (stress grading and geometric) and it is found that, along with the increase of frequency, there are obvious hot spots on the stress grading termination, which are corresponding to the concentrating spots of electric field, while there is no obvious temperature change on the geometric termination. The electric aging test indicates that, along with the increase of aging time, the hot spot temperature of stress grading termination rises obviously while that of geometric termination is not so obvious.
| Original language | English |
|---|---|
| Pages (from-to) | 166-170 |
| Number of pages | 5 |
| Journal | Dianli Zidonghua Shebei/Electric Power Automation Equipment |
| Volume | 33 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 2013 |
| Externally published | Yes |
Keywords
- Electric cables
- Electric fields
- Harmonic voltage
- Insulation
- Resistive heating
- Termination
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