Investigation of Electromagnetic Interference between Power Lines and Railway

建议项目旨在研究电力线与铁路之间的电磁干扰问题，并提出有效的解决方案以减轻干扰。与交流（AC）电力线共享公共走廊的铁路在空气和土壤中捕获电力线周围的电磁场能量的一部分。这种捕获的能量将在铁轨上感应出电压，并可能导致接触铁轨的人员触电危险。过高的轨间电压亦会影响铁路信号及保护系统的正常运作。2010年，加拿大国家铁路（CN）工人报告说，在阿尔伯塔的Grande Cache地区拼接两段铁路时发生电击。这条铁路与ATCO电气公司运营的配电线路平行。ATCO技术人员在冬季测量了铁轨上的高电压值。对该问题进行了初步调查，并确定电力线和铁路之间的电磁干扰是造成冲击的原因。

The proposed project aims to investigate the electromagnetic interference problem between power lines and railways and propose effective solutions to mitigate the interference. Railways sharing a common corridor with alternate current (AC) power lines capture a portion of the electromagnetic field energy surrounding the power lines in the air and soil. This captured energy will induce voltage on rail and can result in an electrical shock hazard for people touching the rail. Excessive rail-to-rail voltages can also compromise the normal operation of the signal and protection systems of the railways. In 2010, Canadian National (CN) Railway workers reported electrical shocks upon splicing two sections of rail in the Grande Cache area of Alberta. The rail runs parallel to a distribution power line operated by ATCO Electric for some length. ATCO technicians measured high voltages on the rail value during the winter. A preliminary investigation on the problem was carried out and it was determined that the electromagnetic interference between power line and rail is the cause for the shocks.