Detection and Remediation of AC Stray Current in Jinzheng Oil Pipeline

For the section of the Jinzheng oil pipeline that is significantly affected by AC stray current interference from high-voltage transmission lines, measures such as solid-state decoupling and bare copper wire grounding were implemented to discharge stray current. Field testing was conducted on pipeline AC/DC potential, AC current density, ground bed operating parameters, and solid-state decoupler operating parameters. The results indicate that this remediation plan could effectively solved the effects of short-circuit faults, increased ground resistance in the pipeline cathodic protection system, and stray current interference caused by solid-state decoupler failures, thereby ensuring the safe operation of pipelines.