客运专线论文-客运专线牵引供电系统可靠性分析评估

1、-. z.客运专线论文：客运专线牵引供电系统可靠性分析与评估【中文摘要】新形势下,我国高速客运专线正处于日新月异的跨越式发展阶段,到2020年将达到1.6万公里。牵引供电系统(TPS)作为高速客运专线的重要子系统,为动车组的持续运行提供动力来源,所以牵引供电系统的可靠直接关系到铁路运输的稳定与安全。牵引供电系统可靠性研究能够为铁路运营决策、维修计划的制定提供重要的理论依据,进而能够为铁路的安全运营、稳定运输保驾护航。鉴于牵引供电系统可靠性研究的重要意义,重点围绕牵引供电系统的结构组成、维修因素、继电保护及软件开发四个主题展开关联研究,致力于发现维修和保护与牵引供电系统可靠性的定量关系,以提高牵

2、引供电系统的可靠性,更好地为客运专线服务。系统阐述了牵引供电系统可靠性的研究意义、研究现状,从现有文献中寻找了相关研究的重要切入点：考虑维修和考虑保护的牵引供电系统可靠性研究。针对牵引供电系统的结构特点,将3F技术(即综合故障模式及后果分析(FMEA)、故障树分析(FTA)和故障报告、分析及纠正措施系统(FRACAS)等三项技术)引入到牵引供电系统的可靠性研究中,分别进行了TPSFMEA、TPSFTA、TPSFRACAS等三项工作,论述了牵引供电系统3F(3TPSF)技术的综合应用。3TPSF技术是一个相互作用的有机组合,可以理顺故障事件的前因后果,有效地积累系统的可靠性数据,防止类似事件的再

3、现,不失为一种研究牵引供电系统可靠性的实用方法。维修是影响牵引供电系统可靠性的重要因素之一,为说明维修对牵引供电系统可靠性的定量影响,选定以牵引变电所电气主接线为研究对象。首先,针对基本串并联系统的可靠性,详细阐述了其理论分析过程及特征结果；然后,在基本系统分析的基础上,建立了牵引变电所电气主接线的不可维修和可维修可靠性模型,给出了两种模型的平均无故障工作时间(MTTF)和平均首次故障前工作时间(MTTFF)的计算策略；最后,通过对比分析不可维修与可维修两种模型的MTTF和MTTFF的计算结果以及三种电气主接线的计算结果,得出如下结论：可维修模型的MTTFF值始终大于可维修模型的MTTF值,可

4、维修模型的MTTFF值始终大于不可维修模型的MTTFF值,可维修模型的MTTF值与不可维修模型的MTTF值的比较则取决于部件维修率的大小。这些结论对牵引供电系统的可靠性规划、设计以及维修策略和标准的制定都有指导意义。继电保护系统作为牵引供电系统安全运行的第一道防线,而且如今高速客运专线的继电保护都采用多功能数字保护装置。为说明继电保护系统与牵引供电系统的在联系,以数字保护的基本功能为出发点,考虑了保护系统故障的四种起因：硬件、软件、辅助设备和人为失误,在此基础上建立了保护系统牵引供电系统部件可靠性模型,另外,还考虑了对系统起重要影响的检测和维修过程中的人为失误、定期检修效率、自检的不同可靠性水

5、平、近后备保护误动和断路器失效,并区分了定检和自检分别在检测拒动和误动两种故障模式时的不同。通过算例定量分析了硬、软件故障如何影响系统可靠性,定检周期、自检周期对系统可靠性的影响,计算了保持系统最大正常工作概率的条件下的最佳定检周期和自检周期。所建立的模型能验证多种问题与系统可靠性的关系,满足了多种因素的分析需要。为了更方便、更快捷地进行牵引供电系统的可靠性分析,以现有文献应用成熟的FMEA和FTA为理论依据,研制了一套客运专线牵引供电系统可靠性评估和数据管理平台”,可以实现牵引供电系统的FTA的建树分析和FMEA的建表分析以及对相关设备的可靠性数据进行有效的管理。【英文摘要】Under th

6、e new situation, high-speed dedicated passenger line (DPL) is being quickly changing during a leap in the development stage, which will reach 16,000 km until 2012. Traction power supply system (TPS) is part and parcel of DPL, which can provide electric energy for motor train-sets. So, the reliabilit

7、y of traction power supply system can guarantee DPLs safe operation and steady transportation and provide DPL with accurate theoretical foundation that is necessary to make operating decisions and maintenance strategies, which is directly related to railway transportation dependability and safety. D

8、ue to the importance of traction power supply system reliability research, this paper concentrates on structure and elements, maintenance,relay and software development of TPS, in order to find the quantitative relationship between maintenance,relay and TPS, to improve TPS reliability, to serve DPL

9、better.Significance and situation of TPS reliability research has been stated. From e*isting references two important points of penetrationTPS reliability analysis considering maintenance and relay.In allusion to structural features of TPS,3F(namely synthesis of Failure Modes and Effects Ananlysis(F

10、MEA),Fault Tree Ananlysis(FTA),Failure Reporting, Analysis & Corrective Action System (FRACAS) )technique has been introduced for analyzing TPS reliability, FMEA tables, FT models,FRACAS of TPS have been created,synthesis application of 3TPSF has been conducted.3TPSF technique is an organic bination

11、 that have interaction with each other, which can make cause and effect of failure events clear, accumulate system reliability data, and effectively prevent similar events from reappearing. Thus, it is a practical way to TPS reliability research.Maintenance is one of important factors which can affe

12、ct TPS reliability. To illustrate the quantitative influence that maintenance produces on TPS reliability, traction substation main connection was chosen as object of study. Firstly, theoretical analysis process,features and results of basic series and parallel reliability system are stated in detai

13、l. And then, based on analysis of the basic series and parallel reliability system, irreparable reliability models and reparable reliability models of traction substation main connection have been established, the ways of how to get mean time to failure (MTTF) and mean time to first failure (MTTFF)

14、of two models are achieved. Subsequently, by parative analysis of the value of MTTF and MTTFF of traction substation main connection reparable and irreparable models, and parative analysis of the value of MTTF and MTTFF among three kinds of traction substation main connection reparable and irreparab

15、le models.Lastly,the following conclusions are found:the values of repairable models MTTFF is undoubtedly larger than its MTTF,the values of reparable models MTTFF is undoubtedly larger than that of irreparable models MTTFF, the parison of the values of reparable models MTTF and irreparable models M

16、TTF depends on the value of ponent maintenance rate, the value main connection reparable model MTTF and MTTFF model is not surely greater than that main connection reparable model. These conclusions gave useful guidances for TPS reliability planning,design and establishing of maintenance strategy an

17、d standard.Protective relay is the first defense line of TPS safe and dependable operation. However, high-speed DPL protective relay has adopted digital technologies with multifunction. To illustrate the influence that digital protection produces on TPS reliability, based on function of digital prot

18、ection, a new reliability model is proposed that associates protection system failures to four main causes:1) relay hardware,2) relay software,3) ancillary equipment, and 4) human error. In addition, this model can take other aspects of the protection system into consideration, such as human error d

19、uring tests and repair actions, routine inspections effectiveness, level of reliance on self-checking, local backup misoperation, and stuck breakers. These considerations have a significant impact on the reliability of protection systems and some of that have been neglected in the e*isting research

20、works. Various capabilities of the model such as how relay hardware and software failures, self-checking and routine inspections interval affect reliability of TPS ponents and protective system, how to get the best self-checking and routine inspections interval are demonstrated in the case study sec

21、tion.This model can be used to check relationship between lots of questions and system reliabilityTo analyzing TPS reliability more conveniently and quickly, based on FMEA and FTA that have been applied popularly in e*isting research works, TPL TPS reliability evaluation and data management software

22、 has been developed, which can help FTA modeling, FMEA table creating and effective relevant reliability data managing.【关键词】客运专线 牵引供电系统 可靠性分析 牵引供电系统3F技术 平均无故障工作时间 平均首次故障前工作时间 继电保护【英文关键词】dedicated passenger line traction power supply system reliability analysis 3TPSF technique mean time to failure me

23、an time to first failure protective relay【目录】客运专线牵引供电系统可靠性分析与评估摘要6-8Abstract8-9第1章 绪论12-181.1 课题的提出121.2 课题的研究意义12-131.3 课题的研究现状13-161.3.1 可靠性国外研究现状13-141.3.2 电力系统可靠性国外研究现状141.3.3 牵引供电系统可靠性国外研究现状14-161.3.4 继电保护系统可靠性国外研究现状161.4 论文的研究容16-18第2章 基于3F技术的牵引供电系统可靠性分析18-322.1 引言182.2 3F技术概述182.3 牵引供电系统结构组成1

24、8-202.3.1 牵引变电所结构组成19-202.3.2 接触网结构组成202.4 牵引供电系统FMEA20-222.4.1 牵引变电所FMEA20-222.4.2 接触网FMEA222.5 牵引供电系统FTA22-282.5.1 牵引变电所FTA22-262.5.2 接触网FTA26-282.6 牵引供电系统FRACAS28-292.7 牵引供电系统3F技术的综合运用29-312.8 小结31-32第3章 考虑维修因素的牵引供电系统可靠性分析32-493.1 引言323.2 两组件基本系统可靠性理论分析32-373.2.1 可修系统32-353.2.2 不可修系统35-363.2.3 可修系统和不可修系统MTTF和MTTFF的比较36-373.3 牵引变电所电气主接线的可靠性模型37-39