In light of the lower failure rate of metro power system,difficult for achievement of precise random state by failure state enumeration method,fialing achievement of failure information by the direct sampling,normal distribution function was used to describe the real process that the equipment unit of metro power system gets out of order.

Based on the analysis of the traveling wave based fault location principles, a fault location system is introduced systematically with its system structure, function flow, and some key techniques for realization of fault location for 10 kV automatic blocking/power continuous lines in railway power systems.

This paper presents a model of the metro power supply system by MATLAB/SIMULINK/PSB and performs the simulation for the dynamic responses of the system under short circuit from short and long distances respectively.

So analysis and improve the reliability and safety of the metro power supply system has come to more attention.

With the application of the method of "Relative Warmth Index" (RWI) , this article calculates the RWI values of the design temperature of present metro systems in several Chinese cites, and makes compavi-son of different RWI values.

Problems and solutions of electrified railway power supervision system based on LON technology;