Research on the Calculation of Equivalent Ice Thickness Considering the Influence of Dynamic Wind Load on Iced Conductor

Dynamic wind load has a significant impact on the accuracy of transmission line ice monitoring. In order to effectively suppress the influence of dynamic wind load on the accuracy of ice thickness calculation model, an equivalent ice thickness calculation model considering the influence of dynamic wind load on iced conductor is proposed in this paper. By establishing the nonlinear relationship between dynamic wind load, conductor tension and temperature, the model completes the conversion from ice monitoring parameters to real wind load in natural environment. Finally, based on the definition of wind load, the real-time inverse calculation of equivalent ice thickness under irregular ice shape is realized by fitting the aerodynamic drag coefficient. The field test results show that the overall change trend of the calculated value of the equivalent ice thickness model is similar to that of the measured value, and the maximum relative error is <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\mathbf{1 1. 0 6 \%}$</tex>, which can provide reference for the maintenance personnel to make corresponding deicing schemes.