Shape Finding of Ice Covered Wire for Overhead Line Based on Finite Element Analysis

Based on the rod element in ANSYS Workbench, this paper analyzes the dead weight of the conductor and the morphological changes under ice cover, and verifies it with catenary theory. How to effectively predict the ice thickness of transmission lines and accurately monitor the ice growth of wires has become an important research topic at home and abroad, which is of great significance for taking anti-ice and de-icing measures in time after power grid ice covering to avoid the occurrence of major ice accidents. Domestic and foreign scholars have put forward a number of ice coating prediction models for conductors. However, due to the complexity of ice coating factors and inaccurate measurement of model parameters, the accuracy of the model calculation has been questioned, and it has not been widely used in engineering. It is of great theoretical reference value and academic significance for the design and construction of anti-icing and disaster reduction of power grid to establish an accurate prediction model for the thickness of conductor icing and accurately monitor the growth process of conductor icing. This paper summarizes the monitoring methods of icing at home and abroad and the icing growth models studied by scholars at home and abroad over the years, and deduces the calculation formulas of stress, sag and line length of overhead line wires according to catenary theory. The wire icing prediction model is established based on ANSYS Workbench and verified by MATLAB.