Research on Distributed Stray Current Monitor Model of Urban Mass Transit

In order to protect the Urban Mass Transit,it was necessary to check and defense the stray current which rusted the rein-forcing steel bar of the building near the railway. It was difficult to monitor the stray current directly on complicated environment,so the paper researched deeply on the principle of the stray current corrosion,the theory formula of stray current distribution was de-duced by applying circuit net theory,and the discrete supply theory model was established. Accord with the distribution rule of the stray current,analyzing the different parameters of the stray current,a distributed and effective stray current monitor model of urban mass transit based on a power supply zone was designed.