电气化铁道AT供电方式牵引回流钢轨电位的分析研究

牵引回流及钢轨电位分布，是关系牵引供电系统安全的重要数据，在高速铁路中，随着牵引负荷的增加．无砟轨道的采用，钢轨电位及电流变化很大。我国高速铁路多采用AT供电方式，有必要对AT供电方式牵引回流和钢轨电位做全面分析。该文针对电气化铁路AT供电方式，通过对牵引回路建立数学模型和计算仿真，得到了牵引回流和钢轨电位的计算公式及其分布规律，并根据分布规律提出了降低钢轨电位的措施。

Study of Traction Return Current and Rail Potential about AT Traction Network on Electrified Railway

Traction return and rail potential distribution, traction power supply system is the relationship be- tween the importance of safety data, high-speed railway, with the traction load increases, the use of non-ballasted track, rail potential and current changes greatly. High-speed railway in China to use more AT power supply, AT power supply is necessary for traction return and make a comprehensive analysis of rail potential. This paper analyzes the traction current return for electric railway under AT power supply mode. Traction circuit is by modeling, calculation, simulation, get the formula and rules of the traction return current distribution and lower under the proposed distribution of rail potential measures.