Research Of Wind Loads On Transmission Lines Under The Micro-topography

As an important carrier of electricity transmission,safety and reliable operation o f overhead transmission line play a very important role in the development of local are as.However,with high soft,lightweight,small damping characteristics,overhead trans mission lines are sensitive to wind load,which makes wind loads the control load in the design of transmission lines.Especially,in some complex terrain,when the air flows through the micro-topography,wind speed near the ground near the air pressure and the wind farm will change,which will make it hard to study the influence on transmission lines.So,studying the distribution of the wind farm Pass microtopography and the variation of the wind field varies with different hill slope and hill spacing,location and reasonable under the wind and other complex terrain Pass transmission line traces the design are important.In order to study the wind load of the transmission line under the condition of micro-terrain,this paper provides a more scientific theoretical basis for the design of the overhead transmission line in this area.:First of all,aiming at the problem of micro terrain,by establishing a typical micro-topography model,based on computational fluid dynamics numerical simulation method,in three dimensions,by ANSYS / FLUENT software to analyze systematically calculated Pass terrain typical area Merry field study hill slope and hill spacing to the wind farm impact.Then,Pass terrain establish the mathematical model parameters under different terrain,through numerical simulation software to obtain the distribution of the wind field Pass terrain and determines the Pass micro terrain correction factor.