Abstract：Catenary reliability is an important factor in railway safety with high speed development of electrification railway, but its research is only qualitative analysis and not further quantitative calculation. Catenary reliability was analyzed and researched by Fault Tree deduction analysis method in this paper. The fault reason and mechanism of catenary system were found according to analyse objective of the most unexpecting fault events .The fault tree of catenary and its mathematic model was established based on a great deal of survey ,the qualitative and quantitative reliability analysis were put up based on the method of fussell down row and minimal cut sets. Analysis result shows that erosion, part intensity, wear, fatigue, dynamic load, strong current, pollution, strain，tension and wavy speed of contact wire are primary factors that bring about invalidation. At the same time, reliability of top events is calculated by minimal cut sets according to fault pattern and the most weak tache. It provides a feasible method and theoretical basis for reliability and security analysis and invalidation forecast.
万毅，邓斌，李会杰，田志军，柯坚. 基于FTA的接触网系统可靠性研究[J]. 铁道工程学报, 2005, 22(6): 55-59.
WAN Yi, DENG Bin,Li Hui-jie,TIAN Zhi-jun,KE Jian. RESEARCH ON RELIABILITY OF THE CATENARY SYSTEM BASED ON FTA. 铁道工程学报, 2005, 22(6): 55-59.
2005, Vol. 22 
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