牵引回流不平衡对高速铁路信号系统的影响

Effect of the Unbalanced Traction Return on a Signal System of High-speed Railway

本文首先对高铁牵引供电系统、高铁信号系统、电力机车牵引传动系统等相关概念或工作原理进行阐述,据此再通过实际检测的方法对牵引回流不平衡对高速铁路信号系统的影响进行探讨,通过检测结果发现由于谐波频率的不断提升,遭受谐波干扰影响将随之减小,却还一直会存在。在当前,我国高速铁路牵引回流中的谐波还是会对高铁信号设备有着非常明显的影响。

Firstly, the paper elaborated the related concepts or working principles of high-speed railway traction power supply system, high-speed railway signal system and electric locomotive traction drive system, and then discussed the influence of unbalanced traction return on high-speed railway signal system through actual detection method. Through the test results, it was found that the unbalanced traction return affected the high-speed railway signal system. As the harmonic frequency increases, the influence of harmonic interference would decrease, but it would still exist.At present, the harmonics in the traction return of high-speed railway in China will have a very obvious impact on the high-speed railway signal equipment.