城市轨道交通专用轨回流供电系统设计及应用

Design and Application of Special Rail Return Current Power Supply System in Urban Rail Transit

通过对既有城市轨道交通线路沿线杂散电流的现场测试和数据分析,提出采用专用轨回流供电系统是解决杂散电流泄漏和对沿线管线腐蚀的根本方案。分析了走行轨回流与专用轨回流的区别,根据实际工程适用范围提出了“架空接触网结合专用轨回流”的系统设计方案。对采用专用轨回流供电系统后性能进行了分析,并对专用回流轨设计要求进行了详细阐述。

Based on the field test and data analysis of the stray current along existing urban rail transit lines,it is proposed that the use of special rail return current power supply system is the fundamental solution to stray current leakage and pipeline corrosion along the line.The difference between running rail return current and special rail return current is analyzed,and the system design scheme of‘overhead contact system combined with special rail return current’according to the practical application scope of the project is put forward.The performance of adopting special rail return current power supply system is analyzed,and the design requirements of special return current rail is expounded.