埋地钢质管道受高铁交流干扰的数值模拟

Numerical Simulation of AC interference from High-Speed Railway with Buried Steel Pipeline

利用数值模拟软件建立了埋地钢质管道受高速铁路输电系统的交流杂散电流干扰(交流干扰)的模型,通过模型计算预测了高铁机车运行至不同位置时对管道造成的干扰情况。根据相关标准要求,对交流干扰进行分析评价,得到超出标准限值要求的管道范围。针对超出安全限值的管线,利用水平敷设锌带的方式设计缓解方案,实现了高速铁路对埋地钢质管道的腐蚀干扰防护,保障埋地钢质管道的安全运行。

Using numerical simulation software,a model of buried steel pipeline interfered by alternating current stray current interference(AC interference)of high-speed railway transmission system was established.The condition of interference with pipeline was predicted through model calculation when high-speed railway locomotives ran to different positions.According to the requirements of relevant standards,the AC interference was analyzed and evaluated,and the pipeline scope beyond the standard limit values of AC interference was obtained.For pipelines that exceeded the safety limit,a mitigation scheme was designed by horizontal laying of zinc belts to achieve corrosion protection for buried steel pipelines against the AC interference of high-speed railways and to ensure the safe operation of buried steel pipelines.