Analysis of the Surface Electric Field of Transmission Line Conductor

With the rapid development of UHV power system in China, corona effect has also been paid more and more attention, systematic study of corona phenomenon and its influence factor would give important reference value to the design of UHV transmission line. In this paper, 2D and 3D simulation model of the corona cage have been established through the ANSYS simulation software. The 2D model only can be calculated and analyzed for a specific cross section, and the 3D model can reflect the field distribution over the whole wires, is superiority than 2D model, and this 3D modeling method can provide reference to wire which surface attached with dirt, rain, snow, and other asymmetric model.