Abstract
Icing on transmission lines is a serious threat to safe
operation of power grids. Ice accretion on power lines
includes two processes, which are the collision between
water droplets and a conductor, and the freezing of water
on the conductor. In the previous studies on the
collision efficiency, a circular shape of a conductor has
been assumed. In this work, the change of conductor shape
is specified through changing the number of the conductor
strands, and the influence of this on the collision
efficiency is analyzed by Fluent. The results show that
the relationship between conductor strand number and the
collision efficiency is quite small, but different under
different conditions, such as wind speed and median
volume diameter of water droplets. From the point of view
of the icing rate in the beginning of an icing event, the
optimal conductor size and shape which lead to minimizing
the collision efficiency can be calculated based on the
local historical weather data using these results
provided that accurate micro-meteorological data are
available.
| Original language | English |
|---|---|
| Pages (from-to) | 52-58 |
| Journal | Cold Regions Science and Technology |
| Volume | 143 |
| DOIs | |
| Publication status | Published - 2017 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- transmission lines
- icing
- collision efficiency
- conductor shape
- conductor strand number