Study on the Real-time Monitoring System of Laboratory Simulation of Metro Stray Current

The existent stray current around the running rail of metro will make electrochemistry corrosion to underground metal. By changing circuit structure and the access point of power source anode, stray current at different sections and during train running process was simulated in real-time monitoring system so as to analyze the corrosion to metal by stray current under different geological conditions. Size and distributing regularity of stray current was studied through the real-time monitoring system on the change of the working current in simulation device. Pertinent experiment data are provided for urban mass transit in design, construction and existing line reconstruction to weaken and eliminate stray current.