Static Line Rating of Overhead Power Lines in Various European Countries

This article compares the static line rating (SLR) values defined for overhead power lines in various European countries. The results reveal significant variations in SLR values between different countries, highlighting the impact of varying limit conditions on the determination of SLR. Wind speed and direction were identified as critical factors that influence the SLR value, with minor changes in these parameters resulting in significant differences in conductor temperature. Moreover, the influence of wind speed on conductor temperatures highlights the need for expert discussion and analysis when considering changes to SLR limit conditions. Adjusting the wind speed to values above 0.6 m/s or altering the wind direction on the conductor can potentially increase overhead power line capacity.