Research Status in Assessment and Protection Techniques of Dynamic DC Stray Current Interference on Buried Pipelines

With the continuous increase in the length of buried pipelines in China and the rapid development of transportation industry, there are more and more situations in which urban rail traffic and pipelines are parallel or intersecting. The pipeline corrosion caused by dynamic DC stray current interference also attracts more attentions. The research status and development of dynamic DC stray current interference on buried pipelines at home and abroad are introduced on the aspects of on-site monitoring, evaluation criteria and mitigation measures. The research trend of the dynamic DC stray current interference is proposed.