中文摘要：

借鉴公共电网地磁扰动（GMD）干扰效应的监测技术,结合我国高铁牵引供电系统的结构与接线,研究了GMD干扰高铁电气系统的物理过程与模式,设计了高铁电气系统的GMD干扰监测装置,提出了GMD产生的地磁感应电流（GIC）变化的监测方法和基于小波变换技术的干扰噪声的处理方法。仿真计算结果表明,利用小波变换技术消除采集信号中的白噪声是可行的。

英文摘要：

The physical process and modes of GMD（Geo Magnetic Disturbance） interference in the tractive power-supply system of domestic high-speed railway are studied according to its structure and wiring patterns and a GMD interference monitoring device is designed based on the monitoring technology of GMD interference in the public electric grid. A GIC（Geomagnetically Induced Current） monitoring method and a wavelet-based denoising method are proposed. Simulative calculation shows the feasibility of white noise elimination by wavelet transform.