城市轨道交通杂散电流及轨道对地绝缘测试

Stray Current of UMT and Rail Insulation Test

介绍了城市轨道交通杂散电流的基本概念、杂散电流腐蚀的机理,以及杂散电流的危害。阐述了减小钢轨电阻、增加泄漏路径对地电阻、设置杂散电流收集网等减少杂散电流的方法。讨论了轨道对地绝缘测试的方法。

This paper introduces the basic concept of stray current of rail transit and elaborates the corrosion mechanism of stray current. The harm of stray current is described in detail and the reduction methods are proposed. At the same time, this paper discusses a test method of rail insulation to the earth.