Abstract: With regard to current situation and existing problems of wind power transmission line in Hunan, this paper provides guidance for freezing prevention and deicing on both technology and management, introduces engineering applications, and guide scientifically the overall level of anti-freezing and melting of wind power transmission lines in Hunan power grid. It is of great significance to guide the overall level of anti-freezing and melting of wind power transmission lines in Hunan power grid in order to promote the implementation of “double carbon”and “building a new power system with new energy as the main body”in Hunan.

Key words: power grid, wind farm, outgoing line, anti-freezing and melting