Abstract
Surface state of transmission line is an important factor to the corona characteristics. Therefore, this paper using surface roughness as the experimental parameters, using Aluminum Conductor Steel Reinforced cable LGJ-400/50 as the experimental materials in wind sand environment, studied the effect of sand particles on the surface of LGJ-400/50 Aluminum Conductor Steel Reinforced cable though the wind tunnel experiment. According to the experimental results a line chart about roughness changing along with the erosion time is obtained. By using Matlab least square fitting function make the line chart into a curve so that trends can be clearly reflected. The results show that: (1) the curve can be divided into two parts: the fast rising stage and the stable stage, the stable stage is related to the formation of oxide layer; (2) when the attack angle is 30 ° surface erosion is the most serious and changes of surface roughness have a maximum value.
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