客运专线设计方案：客运专线牵引供电系统可靠性分析与评估

1、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

2、牵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 TPSFTATPSFRACA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

3、事件的再 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

4、4; 始终大于可维修模型的MTTF直,可维修模型的MTTFFt始终大于不可 维修模型的MTTFF直,可维修模型的MTTF®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 引供电系统的内在联系，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

5、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

6、FMEA勺建表分 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 the newsituation,high-speed dedicatedpasse nger line (DPL) is being quickly cha nging duri ng a leap in the development stage, which will reach 16,000 kmuntil 2012. Tracti on power supply system (TPS) is part and parcel of DPL, which can provide electric en

7、ergy for motor train-sets. So, the reliability of traction power supply system can guarantee DPL s safe operation and steady transportationand provide DPLwithaccurate theoretical foun dati on that is n ecessary to make operati ng decisi ons and maintenance strategies, which is directly related to ra

8、ilway transportation dependability and safety. Due to the importa nee of tracti on power supply system reliability research, this paper concentrates on structure and eleme nts, maintenan ce,relay and software developme nt of TPS, in order to find the qua ntitative relati on ship betwee n maintenance

9、,relay and TPS, to improve TPSreliability, to serve DPL better.Significance and situation of TPS reliability research has bee n stated. From existi ng refere nces twoimporta nt poi nts of pen etrati onTPS reliability an alysisconsidering maintenance and relay.In allusion to structural features of TP

10、S,3F (n amely syn thesis of Failure Modes and Effects Anan lysis(FMEA),Fault Tree Anan lysis(FTA),Failure Report ing, An alysis & Corrective Actio n System(FRACAS) )tech nique has bee n in troduced for an alyz ing TPS reliability, FMEA tables, FT models,FRACAS of TPS have bee n created,s yn thes

11、is applicati on of 3TPSF has bee ncon ducted.3TPSF tech nique is an orga niccomb in ati on that havein teracti on with each other, which can make cause and effect of failure eve nts clear, accumulate system reliability data, and effectivelyprevent similar events from reappearing. Thus,it is a practi

12、cal way to TPS reliability research.Mai nte nance is one of important factors which can affect TPS reliability.reliabilityTo illustrate the qua ntitative in flue nce that maintenance produces on TPS reliability, tractio n substati on mai n connection was chosen as object of study. Firstly, theoretic

13、al an alysis process,features and results of basic series and parallel reliability system are stated in detail. And the n, based on analysis of the basic series and parallel reliability system, irreparable reliability models and reparablemodels of traction substation main connection have been establ

14、ished, the ways of how to get mean time to failure(MTTF) and mean time to first failure (MTTFF) of two models are achieved. Subseque ntly, by comparative an alysis of the value of MTTF and MTTFF of tracti on substati on mai n conn ecti on reparable and irreparable models, and comparative analysis of

15、 the value of MTTF and MTTFF among three kinds of tracti on substatio n main conn ecti on reparable and irreparable models.Lastly,the follow ing con clusi ons are foun d:the values of repairable model ' s MTTFF is undoubtedly larger than its MTTF,the values of reparable model ' s MTTFF is un

16、doubtedly larger than that of irreparable model' s MTTFF,the comparison of the values of reparable model' s MTTFand irreparable model' s MTTFdepends on the value of component maintenance rate, the value main conn ecti on reparable model MTTF and MTTFF model is not surely greater tha n th

17、at main conn ecti on reparable model.These con clusi ons gave useful guida nces for TPS reliability pla nnin g,desig n and establishi ng of maintenance strategy and standard.Protective relay is the first defense line of TPSsafe and depe ndable operati on. However, high-speed DPL protective relay has

18、 adopted digitaltech no logies with multifu ncti on.Toillustrate the in flue nce that digital protecti on produces onTPSreliability,based on function of digital protection, a new reliability model is proposed that associates protect onsystem failures to four main causes:1) relay hardware,2) relay so

19、ftware") an cillary equipme nt, and 4) huma n error. I n addition, this model can take other aspects of the protection system into consideration,such as humanerror during tests andrepair acti ons, rout ine in specti ons effective ness, level of relia nee on self-check in g, local backup misoper

20、ati on, and stuck breakers. These considerationshave a significantimpacton the reliability of protectionsystems and some of that havebee n n eglected in the exist ing research works. Various capabilities of the model such as how relay hardware and software failures, self-checki ng and routi ne in sp

21、ecti ons in terval affect reliability of TPS comp onents and protective system, how to get the best self-checki ng and routi ne in specti ons in terval are dem on strated in the case study secti on. This model can be used to check relatio nship betwee n lots of questi ons and system reliabilityTo an

22、 alyz ing TPS reliability more convenien tly and quickly, based on FMEA andFTAthat have been applied popularly in existingresearch works,“ TPL TPS reliability evaluati on and data man ageme ntsoftware“ has been developed, which can help FTA modeling, FMEAtable creat ing and effective releva nt relia

23、bility 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 passe nger linetracti onpower supply systemreliability an alysis3TPSFtechnique mean time to failure mean 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6-8 Abstract 8-9 第1章 绪论12-181.1课题的提出12

24、1.2课题的研究意义12-131.3课题的研究现状13-161.3.1 可靠性国内外研究现状13-141.3.2 电力系统可靠性国内外研究现状14牵引供电系统可靠性国内外研究现状14-161.3.4 继电保护系统可靠性国内外研究现状161.4论文的研究内容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牵引变电所结构组成接触网结构组成202.4牵引供电系统FMEA20-222.4.1 牵引变电所 FMEA20-222.4.2 接触网FMEA22 2.5牵引供电系统FTA 22-282.5.1 牵引变电所接触网FTA 26-282.6牵引供电系统FRACAS28-29 2.7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32-37321 可修系