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| RESEARCH ON RELIABILITY OF THE CATENARY SYSTEM BASED ON FTA |
| WAN Yi1, DENG Bin1,Li Hui-jie2,TIAN Zhi-jun2 , KE Jian1 |
| 1 School of Mechanical Engineering ,Southwest Jiaotong University ; 2The First Survey and Design Institution of China Railway |
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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.
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Received: 22 August 2005
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[1]Lee WS, Crrosh D L, Tilman F A. on Reliability[J].Lie C H. IEEE Trans,1985, 34(3):194-203.
[2]孙新利.可靠性工程教程[M].北京:国防工业出版社，2005.
[3]刘惟信.机械零件的可靠性设计[M].北京:清华大学出版 社，1996.
[4]郑裕国.故障树定性和定量算法[J].浙江工业大学学报，1995, 23(1) :43-44.
[5]熊怀欣.基于失效时间函数的系统可靠性数学模拟算法研 究[J].系统工程理论与实践，2001,23(8):58-62.
[6]王永传.基于故障树为模糊数的故障树分析方法研究[J].系 统工程理论与实践，2000,32(12):103-107.
[7]于万聚.高速电气化铁路接触网[M].成都:西南交通大学出 版社，2002.
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2005, Vol. 22 
