Based on the long-distance buried pipeline of wide-ranging geographical distribution,the environment which is relatively complicated due to the characteristics of its stray current monitoring program,the SCADA system based on wireless communication will be applied to the long-distance buried pipeline stray current monitoring,remote data collection and monitoring.

Corrosion reasons of stray current during metal anode electrolyzers running;

Research on distribution rule of the stray current in the pits;

Design of reducing corrosion to electrolysis system by reduction in stray current;

Tows the power supply system in view of the URT transportation to use the rails backflow to have the stray currents question,unifies the DC 1500V power supply service pattern power supply to be away from long,the voltage drop small merit,proposed uses the DC 1500V fourth rail technologies to come the question which the thorough settlement stray currents produces.

This article analyzes the reasons why the stray currents occur and their harm to subway equipment and facilities and proposes preventing and controlling measures for the subway stray currents.

And the theory of stator current monitoring is described.