就交流电气化铁道而言,其钢轨在提供车辆行驶功能的同时,还需要满足整个电网的牵引回流需求。牵引回流功能的提供使得钢轨形成一定的对地电位。这种现象会对车辆的行驶安全产生不良影响。本文从钢轨对地电位的产生原理入手,对交流电气化铁道钢轨的对地电位进行分析和研究。 As far as the AC electrified railway is concerned, its rails need to meet the demand for traction and return of the entire power grid while providing vehicle driving functions. The provision of traction return function allows the rail to form a certain ground potential. This phenomenon will have a negative impact on the driving safety of the vehicle. This article starts with the principle of rail potential generation, and analyzes and studies the ground potential of the rail of alternating current electrified railway.