| In this paper, five hierarchies in RAMS (reliability/availability/maintenance /safety) evaluation of traction power supply system for high-speed railway are proposed. For the reliability evaluation of the first hierarchical level, under the prerequisite of over-section power supply, the reliability index of traction power supply system for high-speed railway is defined; the power supply reliability index represented by component reliability parameters is derived. Develop JAVA program for evaluated calculation.Taking the power supply of a certain high-speed railway for example, Us RBTS and by means of reliability calculation and sensitivity analysis the weak links, which may affect both power supply reliability and carrying capacity of railway traction power supply system for high-speed railway, are decided.For level 2,based on the minimum-cutest-search method,evaluating for the reliability and economic indicators.Take the Beijing-Tianjin passenger train electricity supply system as example, Spawned three instance: Non-bridge, inner-bridge and outer-bridge.After comparison for the three type, we get the optimized solution, which can be refereced by reader.For level 5, this paper examines the indicators of reliability and reliability model that can better reflect the actual situation. Then, we can find the minimum cutset for the complex network and turn into the equivalently serial and parallel structure to get the corresponding reliability indicators.The thesis use above method for reliability evaluation for the Beijing-Tianjin passenger train electricity supply system. When evaluating, we consider all components and their classifications in the line.Considered the lifetime of the component, we compare the failure rate in the running-in period and the normal period to find component that effect reliability most to the load port, as well as corresponding analysis which can be used as the new electrified railway building reference.
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