耿贞伟.基于Ansys的高压输电塔风振特性分析[J].电测与仪表,2023,60(2):84-90. gengzhenwei.Analysis of wind-induced response and wind-resistant performance of high-voltage transmission tower - line coupling system on Ansys[J].Electrical Measurement & Instrumentation,2023,60(2):84-90.
基于Ansys的高压输电塔风振特性分析
Analysis of wind-induced response and wind-resistant performance of high-voltage transmission tower - line coupling system on Ansys
In power under the background of a wide range of applications, the vibration characteristics of the transmission line for the safety of power grid as a whole has a very important significance. Coupling system is developed, with the three lines of two towers of simplified mechanical model, and to build a typical 500 kv ac double circuit tension tower as the object to verify the validity of the algorithm. Two tower is established by use of Ansys software, three line coupling model analysis, tower and double tower vibration - line coupling vibration analysis. On the basis of the use of Davenport wind speed spectrum to the wind load of the power tower model node is simulated, and the coupling model for the dynamic time history analysis, finally got the node displacement curve, effectiveness of the model is proved reasonable. The final results show that the modal coupling system with tower, the line of their respective modes is given priority to, and a part of vibration induced by the tower or line new type, and under the same order coupled vibration frequency is less than the vibration of the double frequency. Finally through the comparison of theoretical calculation and finite element analysis results, proved the correctness of the mechanical model is derived.
