Summary
Ice and snow can significantly affect the insulator performance and have an impact on the electrical system reliability as shown by the many flashover problems occurred in the world. Generally a deterministic design approach is adopted, which, among others, makes reference to a conductivity of the ice dissolved water of 100 µS/cm, value which may be too high and not representative of many areas, e.g. mountain areas with rather clean environment. The approach may be very conservative and therefore may lead to unnecessary insulator lengths for most of the environments. The above indicates the need of a more careful statistical design approach, as presented in the paper. Examples of application of the statistical approach are also reported in the paper. The results are discussed at the light of the Italian experience about the performance of AC lines installed in the mountains, with significant ice and snow contingencies.
Additional informations
| Publication type | ISH Collection |
|---|---|
| Reference | ISH2017_442 |
| Publication year | |
| Publisher | ISH |
| File size | 1 MB |
| Pages number | 6 |
| Price for non member | Free |
| Price for member | Free |
Authors
BOSSI, Akker, Cerqueira
Keywords
