土耳其安伊高铁Ⅱ期电气化综合接地系统设计

国内高速电气化铁路回流线和全线贯通综合接地线均分别设置,且回流线多采用绝缘安装方式。而土耳其安伊高铁项目采用带回流线的直接供电方式,回流线采用不绝缘安装方式,利用回流线兼作全线贯通架空地线为沿线各设备提供等电位连接和接地功能。该回流线兼地线采用架空方式且在正常和故障情况下均流过电流,而且还要为沿线各设备提供接地功能,因此在设计过程中应充分考虑回流系统对接地影响,合理设置回流及接地系统结构及参数,满足各专业接地需求。

Integrated Grounding System Design Summary of Turkish High-speed Electrified Railway Ankara-Istanbul High Speed Railway

In China, the return wire and integrated grounding wire of high-speed electrified railway system always is separated, and the return wire is amounted in insulated condition. But in Anakara-Istanbul high-speed railway project, the direct power supply system with return wire is used, and the uninsulated return wire is also used as the overhead ground wire to provide equipotential bonding for equipments along the line. Taking all these into consideration, in the design process, according to the requirements of every associated system, we should adequately consider the influence of the return system, and design the return and earthling system structure to make all parameters satisfy the requirement.