跨高铁输电线路复合绝缘子伞裙抗风性能研究

Wind Resistance Performance of Composite Insulator Shed for Transmission Lines Across High-Speed Railway

复合绝缘子在输电线路中发挥着支撑导线和防止电流回地的作用。随着我国高速铁路的快速发展,许多跨越高铁输电线路的复合绝缘子在列车风的影响下出现了伞裙的撕裂情况。本研究通过复合绝缘子伞裙特征,研究了绝缘子伞裙固有频率、伞径、伞倾角等因素对抗高铁运行带来的风能的影响,并以此为依据,提出了跨高铁输电线路复合绝缘子的选取方法,所得结果可为跨高铁输电线路抗风型复合绝缘子的设计和选型提供参考。

Composite insulators is to support conductors and prevent current from returning to the ground in transmission lines.With the rapid development of high-speed railway in China,many composite insulators crossing high-speed railway transmission lines suffer from tearing faults in strong wind environment,which leads to the deterioration of insulator pollution flashover performance.Based on the characteristics of different types of composite insulator sheds,this project studied the influence of natural frequency,diameter,inclination of the shed and other factors on the wind energy brought by high-speed railway operation.Based on this,the selection method of the composite insulator for trans-high speed railway is put forward.The results can provide reference for the design and selection of wind-resistant composite insulator for transmission lines across high-speed railway.