【作者】 吴波；

【导师】 韩宝明；

【作者基本信息】 北京交通大学 ， 交通运输（专业学位）， 2022， 硕士

【摘要】 随着国家对城市轨道交通发展战略的调整,我国的城市轨道交通发展也从快速建设阶段转向高质量运营维护阶段,这就对城轨各分系统和设备的运维提出了更高的要求和标准,尤其是作为动力总来源的城轨供电系统,它的可靠性和稳定性至关重要。目前的业内各运维单位针对城轨供电系统制定的运维方案基本上是参考大铁路系统常用的定期维修方式,该方式依据经验对各类设备制定一个固定的检修周期,虽然在一定程度上可以降低设备故障率,但也会导致过检修和欠检修的问题,前者会产生人力物力的浪费,后者则使设备存在故障隐患。为了解决该问题,本文展开研究了基于重要度分析的城轨交通供电系统关键设备运维策略。首先,对于城市轨道交通的关键设备的重要度结合故障模式与影响分析(Failure mode and effects analysis,FMEA)和故障树法(Fault Tree Analysis,FTA)两种重要的评估方法进行了详细的分析,基于FMEA对整个城市轨道交通关键设备与其各自的子系统和部件之间的逻辑关系和故障表现等,之后在建立的FMEA表格的基础上基于FTA分析方法建立了整个系统的故障树模型,定性和定量的分析计算了系统中关键设备的重要度;然后,分析了城轨供电系统关键设备故障维修、计划维修和状态维修三种维修方案的原理和特点,并提出了对于不同供电设备制定不同维修方案的必要性,介绍了层次分析法的原理并详细描述了构建层次分析法四个步骤:构建层次结构模型、建立判断矩阵、层次单排序一致性检验和层次多排序与一致性检验,并根据各关键设备重要度构建了层次分析法结构模型,通过构建合理的数学模型确定了个关键设备的运维方案;最后,针对需要定期维修的关键设备,研究了其性能劣化特性和规律并构建了劣化模型,分别确立设备在正常和非正常工况下的指标修正权重向量,采用分段线性化Wiener方法,建立设备逐步加速劣化模型,并基于逐步加速劣化模型通过Monte Carlo法求解最优的设备劣化程度阈值和检修间隔组合,以获得最低的运维成本。图39幅,表46个,参考文献93篇。更多还原

【Abstract】 With the adjustment of the national development strategy for urban rail transit,the development of urban rail transit in China has also shifted from the rapid construction stage to the high quality operation and maintenance stage,which has put forward higher requirements and standards for the operation and maintenance of various sub-systems and equipment of urban rail transit,especially the reliability and stability of the urban rail transit power supply system,which is the total source of power.The current O&M programme for urban rail power supply systems is basically based on the regular maintenance approach commonly used in large railway systems,which is based on experience and sets a fixed maintenance cycle for all types of equipment.In order to solve this problem,this paper develops a research on the operation and maintenance strategy of key equipment of urban rail transportation power supply system based on importance analysis.Firstly,the importance of critical equipment of urban rail transit is analysed in detail by combining two important assessment methods,namely Failure mode and effects analysis(FMEA)and Fault Tree Analysis(FTA),and the whole critical equipment of urban rail transit is analysed based on FMEA.The logical relationship and fault behaviour between the critical equipment and its respective subsystems and components,etc.Based on the FMEA tables established,a fault tree model of the whole system was then built based on the FTA analysis method,and the importance of the critical equipment in the system was calculated by qualitative and quantitative analysis.Then,the principles and characteristics of the three maintenance schemes of fault maintenance,planned maintenance and condition maintenance for critical equipment in urban rail power supply system were analysed,and the necessity of formulating different maintenance schemes for different power supply equipment was put forward.The structural model of the hierarchical analysis method is constructed according to the importance of each critical equipment,and the operation and maintenance plan of each critical equipment is determined through the construction of a reasonable mathematical model.Finally,for the critical equipment requiring regular maintenance,the degradation characteristics and rules were studied and a degradation model was constructed.The threshold value and maintenance interval combination are used to obtain the lowest O&M cost.Figures: 39,Tables: 46,References: 93.更多还原