接地极线路招弧角安装方式研究

Study on Installation of Arcing Horn on Electrode Line

当安装有招弧角的架空输电线路遭受雷击时,招弧角保护间隙将会发生击穿闪络。闪络形成的电弧由于电磁力的影响而运动,合理安装招弧角可以使电弧远离绝缘串,从而保护输电线路。本文以某±800kV特高压直流工程的接地极线路数据为基础,进行电弧电磁力建模,并计算故障位置、安装方式及杆塔接地电阻对电弧产生的影响,为招弧角的安装方式提供了参考。

Arcing horn will breakdown when lightning the transmission line. The arc will move due to the electromagnetic force. And taking the proper installation of arcing horn will make the arc away from the insulator strings, which can protect the transmission line effectively. The calculation model of electromagnetic force is established in this paper base on the grounding line of Puer converter station. The installation, fault location and grounding resistance are analyzed to determine the effects on arc. The calculation results provide references for the installation of arcing horn.