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

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.