中英文摘要要求及样例1

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1、精心整理中、英文摘要撰写标准及样例1 摘要的定义 摘要是以供应文献内容梗概为目的、不加评论和补充说明、简明准确地记述文献重要内容的短文。它用来报道作者的主要探究成果，向读者供应论文中全部创新内容和尽可能多的定量或定性的信息。摘要重点包括四要素：目的、方法、结果和结论。2 摘要的撰写原那么1) 论文摘要包括中文摘要和英文摘要。一般中文摘要200400字。中、英文摘要应相同意思和内容相同，但无需逐字照译，做到信、达、雅。2) 文字简明扼要，提取论文中重要内容，不含前言、背景等细微环节局部，去掉旧结论、原始数据。采纳第三人称表述，不用“我们”“作者”“笔者”“本文”等做主语。3) 摘要不得简洁重复题

2、名中已有的信息；不用非公知公用的符号和术语,缩略语、缩写词、代号等在首次出现时必需加以说明；应采纳法定计量单位,正确运用语言文字和标点符号；不运用特别字符，也不运用图表和数学表达式；不列举例证。3 摘要的四要素1) 目的探究、研制、调查等的前提、目的和任务，所涉及的主题范围。2) 方法所用的原理、理论、条件、对象、材料、工艺、构造、手段、装备、程序等。3) 结果试验的或探究的结果、数据，被确定的关系，视察结果，得到的效果，性能等。4) 结论结果的分析、探究、比拟、评价、应用，提出的问题，今后的课题，假设，启发，建议，预料等。4 关键词关键词是论文的检索标记，是表达文献主题概念的自然语言词汇，一

3、般从论文的题名、摘要和正文中提取。每篇论文选取38个词作为关键词，将选出的关键词遵照所涉及领域的范围从大到小依次列出。首选主题词索引标准化的词或词组，再选自由词未标准化的词或词组。 中、英文关键词分别置于中文摘要和英文摘要之下，每个关键词之间用分号隔开。5 英文摘要的写作标准5.1 英文摘要的时态用过去时态表达作者工作，用此时此刻时态表达结论。如：The structure of dislocation core in Gap was investigated by weak-beam electro microscope.过去时表达作者所做的工作 The dislocations are d

4、issociated into two Shokley partials with separations of (80+10) and (40+10) A in the pure edge and screw cases respectively. 此时此刻时表达探究的结论5.2 英文摘要的语态主动语态和被动语态兼用。1) 在表达作者或有关专家的观点时，应用主动语态，其优点是显明有力。例如：Science 科学杂志的一例Abstract sample (Science, p 503, volume 311, issue 5760) We report the observation of B

5、eyond a critical polarization h, the gas separates into a The critical polarization diminishes with We measured These results are relevant to predictions 2) 能用主动语态的不用被动语态。如：A exceed B 优于B is exceeded by A. 3) 用词要客观平实，幸免主观和倾向性色调的词，不宜运用perhaps, maybe, likely, possible, probably等。5.3 英文摘要的文体风格1) 摘要第一句话

6、切不行与题名(Title)重复。在EI中每篇摘要记录都是与题名连排的，只是题名用黑体排印，因此可以认为题名便是摘要的第一句话。2) 用重要的事实开头，尽量幸免用协助从句开头。如：用Power consumption of telephone switching systems was determined from data obtained experimentally, 而不用From data obtained experimentally, power consumption of telephone switching systems was determined。3) 摘要最好要有

7、具体内容，摘要中不能出现“图”、“方程”和“参考文献”等句子。对那些已经为群众所熟识的缩写词，如radar、laser、CAD等，可以干脆运用。对于那些仅为同行所熟识的缩略语，应在题目、摘要或关键词中至少出现一次全称。4) 组织好句子，使动词尽量靠近主语。如：不用The decolorization in solutions of the pigment in dioxane, which were exposed to 10 h of UV irradiation, was no longer irreversible, 而用When the pigment was dissolved in

8、 dioxane, decolorization was irreversible after 10 h of UV irradiation。 5) 尽量采纳-ing 分词和-ed 分词作定语，少用关系代词 which , who 等引导的定语从句。6) 不运用俚语、外来语表达概念，应用标准英语。 7) 句子构造严谨完整，尽量用短句子。用词力求简洁，在表达同样意思时，尽量用短词代替长词，以常用词代替生僻词。但是当描述方法、步骤时，应当用狭义词代替广义词。例如，英文中有不少动词，do，run，get，take等，虽简洁常用，但其意义少那么十几个，多那么几十个，用这类词来描述探究过程，读者难免产生

9、误会，甚至会不知所云，这就要求依据具体状况，选择意义相对明确的词，诸如perform, achieve等，以便于读者理解。8) 摘要表达要简明，逻辑性要强。 9) 技术术语尽量用工程领域的通用标准。10) 语言要简练，但不得运用电报语言。 11) 文词要淳朴无华，不用多姿多态的文学性描述手法。 12) 删繁从简。如：用increase代替has been found to increase。 13) 摘要中涉及他人的工作或探究成果时，尽量列出他们的名字。 14) 摘要词语拼法，用英美拼法都可，但每篇中应保持相同。 5.4 典型句型摘要常用句型大体可归纳为： 1) 表示探究目的，常用在摘要之首，

10、如：In order to This paper describesThe purpose of this study is 2) 表示探究的对象与方法，如：The curative effect/sensitivity/function of certain drug/kit/organ. was observed/detected/studied 3) 表示探究的结果，如：The result showed/It proved/The authors found that 4) 表示结论、观点或建议，如：The authors suggest/conclude/consider that

11、5.5 英文题名 书写格式每个实词的首个字母大写，如：Costs, Risks and Benefits in Publishing。 题名中有冠词,介词,连接词，如假设在题名中首字,或在冒号后副标题首字时,首字母要大写；介词多于3个字母时要大写, 如With, Between , About。 文章标题的一些讲究1) 英文题名开头第一词不得用The, And, An和A。最好不用这些词：Study , Investigation, and Observation of/on，An opening A and The；2) 用最少的字词或短语表达主要信息；3) 幸免缩写，除非普遍知晓的缩写。6

12、 中、英文摘要样例中、英文摘要样例，包括文题、作者姓名、单位、所在城市非省会城市还要标出省名、邮编、摘要、关键词。样例1：城市轨道交通列车运行限制系统分级标准探究刘宏杰，郜春海，刘 波，陈黎洁 (北京交通大学电子信息工程学院，北京 100044) 摘要：结合城市轨道交通列车运行限制系统MTCS的发呈现状以及将来的技术开展战略，参考欧洲列车运行限制系统ETCS和中国铁路列车限制系统CTCS分级和标准化的思路，阐述MTCS分级标准建立工作的重要性，对MTCS的分级标准建立方式给出必须的建议。MTCS体系以车载设备为核心，通过对地面限制设备的扩展以增加系统功能，可以分为14个不同的等级。系统可在低等

13、级的根底上叠加设备来构成高等级的系统，不同等级间的主要差异在于地-车信息传输的方式和系统自动化的程度。给出MTCS的系统构造和各等级的概述，并对不同等级的功能进展比照。关键词：城市轨道交通；列车运行限制系统；分级；标准化 中图分类号：U231 文献标记码：A文章编号：1672-6073201701-00 -04 Study on Classification Standard for Metro Train Control System说明：英文题名的实词首字母大写LIU Hongjie，GAO Chunhai，LIU Bo，CHEN Lijie 说明: 作者姓和名之间用1个空格分开，姓的字母

14、全大写，名的首字母大写，其余字母小写；不同作者之间用逗号“，”隔开(School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044说明: 作者的单位信息用括号包含，假如是大学，必需先写二级单位，再写大学名称，城市假如不是省会城市的，还须要给出所在省的名称，最终给邮编。无需给出国家名称。单位信息的英文同题名要求，实词首字母大写，虚词都小写。Abstract: Considering the current development situation and developm

15、ent trend of Metro Train Control System (MTCS), the importance of establishing classification standards of MTCS is introduced by referring to the classification and standardization of European Train Control System and Chinese Train Control System. Proposals for the establishing methods of classifica

16、tion standard of MTCS were put forward. With the vehicle on-board controller as the core subsystem, through the expansion of wayside subsystem to enhance the system function, MTCS can be classified into levels 1-4. Devices can be superimposed on the basis of a low level system to form a higher level

17、 system. The main difference between different levels is the way of information transmission between vehicle and wayside subsystems and the degree of system automation. The system structure of MTCS and an overview of various levels were presented, and the functions of different levels were compared.

18、Keywords: urban rail transit; Metro Train Control System (MTCS); classification; standardization说明: 英文关键词之间用英文输入状态下的“；”分隔。样例2：宁波地铁列车编组方案比选及实施陈 斌1 ，李 英2 1.宁波市轨道交通集团有限公司，浙江宁波 315012；2.上海市隧道工程轨道交通设计探究院，上海 200070摘 要：对宁波市轨道交通2号线一期工程初、近期采纳4辆编组与6辆编组方案，从配属车辆、行车间隔、牵引能耗、满载率与拥挤度、资源共享等多个方面进展探究比选。探究说明，初、近期顶峰高断面客

19、流分别为1.18万人/h、1.89万人/h，在初、近期客流与远期客流相比拟小的状况下，同等运营效劳水平下4辆编组的运输效率要优于6辆编组，同等购车与牵引能消耗用条件下4辆编组效劳水平较好，同等效劳水平条件下4辆编组购车与牵引能消耗用较节约；采纳初期4辆编组、近期4辆/6辆编组混合运营，至远景6辆编组的转换，均可以在客流开展改变的状况下实现有效过渡。关键词：城市轨道交通；车辆编组；运营；车辆配置中图分类号：U231 文献标记码：A文章编号：1672-6073201701-00 -04 Train Composition Scheme of Ningbo Rail Transit CHEN Bin

20、1，LI Ying2(1.Ningbo Rail Transit Group Co., Ltd., Ningbo 315012；2. Shanghai Tunnel Engineering and Rail Transit Design and Research Institute, Shanghai 200070)Abstract: Phase 1 of Ningbo rail transit Line 2 adopts 4-car train composition at the beginning and 6-car train composition recently. Compari

21、son and selections were carried out in terms of vehicles, traffic intervals, traction energy consumption, load factors and crowded degree, resource sharing and other aspects. The passenger flow peak is 11,800 persons per hour at the beginning and 18,900 persons per hour recently. The passenger flow

22、at the beginning and in the near future are less than that in the future; under such condition, operating under the same level of service the transport efficiency of 4-car train composition is better than 6-car ones; service of 4-car train composition is better under the same number of trains bought

23、 and the same traction energy consumption. 4-car train composition is more economical for train purchase budget and energy consumption under the same level of service. 4-car train composition at present, 4/6-car train composition mixed operation in the near future and 6-car train operation in the fu

24、ture altogether can realize an effective transition in the changes of passenger flows.Keywords: urban rail transit; train composition; operation; carriage allocation样例3：20022016年我国地铁施工平安事故规律性统计分析李皓燃，李启明，陆 莹东南大学土木工程学院，南京 210096摘 要：搜集20022016年统计到3月地铁施工事故246起，从时间、事故类型、施工工法、发生位置、站台形式、死伤人数等8个方面分析、描述事故发生的

25、规律性。结果显示，事故发生的总数呈上升趋势，但每千米死亡人数呈下降趋势；每年1月、5月、7月、11月，每天0:00-1:00、8:00-11:00和15:00-18:00地铁施工事故发生较为频繁；坍塌是地铁施工工程中发生最常见的事故类型，占43%；明挖法施工数占地铁施工事故的31%；盾构法施工数占区间工程施工事故的62%；火灾爆炸是区间工程施工中较常发生的事故，而在车站工程中发生较少。最终，结合长三角地区主要特点，从技术、管理、政策3方面有针对性地提出对策和建议。关键词：地铁建立；施工事故；统计分析；规律性；长三角中图分类号：U231；F530.7 文献标记码：A文章编号：1672-60732

26、01701-00 -04Statistical Analysis on Regularity of Subway Construction Accidents from 2002 to 2016 in ChinaLI Haoran，LI Qiming，LU Ying (School of Civil Engineering, Southeast University, Nanjing 210096)Abstract: The data of subway construction accidents in China from 2002 to March, 2016 are presented

27、 in order to analyze the regularity of these accidents from the perspective of years, months, hours, accident types, construction methods, locations, numbers deaths and so on. The results show that the total number of accidents is on the rise, but deaths per kilometer gradually decline. Most constru

28、ction accidents occurred frequently in January, May, July and November every year and during 0:00-1:00, 8:00-11:00 and 15:00-18:00 every day. Collapse is the most common accident type, occupies 43%; Open cut method accounts for 31% of subway construction accidents, and shield method 62% of section c

29、onstruction. Fire and explosion often took place during section constructions while seldom happened during station constructions. Finally, according to the regularity, some countermeasures and the suggestions of subway construction safety are put forward considering the characteristics of Yangtze Ri

30、ver Delta region from the three aspects of technology, management and policy.Keywords: subway construction; construction accidents; statistical analysis; regularity; Yangtze River Delta样例4：盾构下穿城际客运专线引起变形的数值分析徐会杰，彭 华，徐希磊北京交通大学土木建筑工程学院，北京 100044摘 要：天市地铁3号线解放桥站天津站站盾构区间穿越京津城际客运专线，为我国首例已实施的盾构穿越高速铁路路基段工程。

31、通过运用ANSYS软件，建立地层-构造三维实体模型，模拟盾构穿越客运专线的过程，分析盾构穿越期间轨道沉降及横移变形规律，将数值分析与实际测试结果进展比照分析，说明在无轨道加固、车辆限速措施的条件下，采纳严格限制施工参数的措施可以保证高速铁路的正常运营。关键词：轨道交通；客运专线；盾构；沉降：数值模拟中图分类号：U231 文献标记码：A文章编号：1672-6073201701-00 -04Numerical Analysis of Ground Deformations Caused by Shield Tunneling Under-crossing Beijing-Tianjin Inter

32、city Passenger Dedicated RailwayXU Huijie，PENG Hua，XU Xilei(School of Civil Engineering, Beijing Jiaotong University, Beijing 100044)Abstract: Shield tunneling between Jiefangqiao station and Tianjin subway station of Tianjin subway Line 3 under-crosses a high-speed railway. Finite element software

33、ANSYS was used to build the three-dimensional model of soil and structure to simulate the construction process of this project and then to analyze the regularity of track settlements and lateral deformations during construction. The results of numerical simulation were compared with the in-situ meas

34、ured data which demonstrated that without track reinforcement measures and train deceleration measures, strict control of construction parameters could ensure the safe operation of the railway.Keywords: urbanrailtransit; passenger-dedicated railway line; shield; settlement; numerical simulation样例5：都

35、市圈背景下的深圳轨道交通开展战略探究张晓春，宋家骅，邵 源，杨宇星深圳市城市交通规划设计探究中心有限公司，广东深圳 518040摘 要：国际大都市圈在开展过程中，都结合空间构造和交通需求改变，制定相应的交通开展战略。港深莞惠地区已经初步具备建立世界级都市圈的条件，须要依据空间开展态势，提早探究交通开展战略。首先，从空间构造上解析其港深莞惠都市圈双核双通勤圈的构造特征；其次，通过分析将来都市圈人口岗位的改变，研判关键地区和走廊的顶峰期通勤交通压力；最终，探究提出深圳轨道交通一体化开展战略以及基于都市圈空间构造重构轨道网络的策略性建议。关键词：轨道交通；都市圈；空间构造；通勤圈；开展战略中图分类号

36、：U231 文献标记码：A文章编号：1672-6073201701-00 -04Study on the Rail Transit Development Strategy of Shenzhen City Under the Background of Metropolitan RegionZHANG Xiaochun，SONG Jiahua，SHAO Yuan，YANG Yuxing(Shenzhen Urban Rail Transit Planning and Design Center Co., Ltd., Shenzhen 518040)Abstract: In the formi

37、ng process of international metropolitan regions, transport development strategies were formulated in combination with the variance of spacial structure and traffic demand. The area of Honkong-Shenzhen-Dongguan-Huizhou (HSDH) has primarily possessed the conditions to build a world metropolitan regio

38、n and it is necessary to study on transport development strategy according to the urban spacial development tendency at its early stage. This paper firstly analyzed the structural characteristics of HSDH metropolitan region, which has two cores and two commuting circles. Secondly, it studied and pre

39、dicted the future commuting traffic pressure of critical areas and aisles based on the forecast of population and employment. Finally, the paper presented an integrated rail transit development strategy. Strategic suggestions were also put forward including rebuilding the rail network according to t

40、he spacial structure of HSDH metropolitan region.Keywords: rail transit; metropolitan region; spacial structure; commuter circle; development strategy样例6：城市轨道交通线网规划修编的前期探究郑明远1，张乃基2，梁青槐11.北京交通大学城市轨道交通探究中心，北京 100044；2.重庆市轨道交通集团有限公司，重庆 400042摘 要：从目前城市轨道交通线网规划不断调整的趋势启程，说明在线网规划中对前期战略性探究存在缺乏。结合重庆市轨道交通开展纲要

41、20112020的编制，探讨线网规划修编的前期探究的作用、内容和探究方法，指出：前期探究是指导调整线网规划和建立规划的纲领性文件，须要在“目标-实施一体化”的框架内，重点探讨轨道交通线网开展的目标、战略途径、重大行动和保障体系；应采纳“系统分析+意愿分析”论证轨道交通的开展目标，以多元化的效率目标来综合谛视线网规模，以“两个一体化”轨道交通与城市空间一体化、轨道交通与其他交通方式一体化来统筹线网形态布局。关键词：城市轨道交通；线网规划；修编；前期探究中图分类号：U231 文献标记码：A文章编号：1672-6073201701-00 -04Early-Stage Study on Urban R

42、ail Transit Network Planning Revision ZHENG Mingyuan1，ZHANG Naiji2，LIANG Qinghuai1(1. Urban Rail Transit Research Center, Beijing Jiaotong University, Beijing 100044; 2. Chongqing Rail Transit Group Co., Ltd., Chongqing 400042)Abstract：The current tendency of continuous adjustment of urban rail tran

43、sit network planning indicates that some problems existed in the earlier-stage strategic study of network planning. Considering the revision of “Chongqing Rail Transit Development Outline (2011-2020)”, the role, contents and research methods were discussed for the early-stage study on network planni

44、ng revision. It has been shown that early-stage study is a guideline for the adjustment of network planning and construction plan. The development objectives, strategic approaches, major actions and security system of urban rail networks should be implemented under the framework of “integrating the

45、target with implementation”. The “system analysis plus wish analysis” method should be adopted to verify the rail transit development targets. A wide range of efficiency targets should be used to examine transit network scales in an all round way. The layout of the urban transit network should be ba

46、sed on the integration of rail with other traffic modes as well as the integration of rail transit with urban space. Keywords：Urban rail transit; network planning; revision; early-stage study样例7：前进式深孔注浆堵水技术初探罗富荣1，江华2,3，江玉生3 1.北京市轨道交通建立管理有限公司，北京 100037；2.北京城建集团有限责任公司，北京 100085；3.中国矿业大学北京力学与建筑工程学院，北京

47、100083摘 要：基于地下水对北京地铁工程施工的影响，分析北京地铁现有施工堵水技术的优缺点，提出采纳前进式深孔注浆堵水技术进展地铁车站堵水。以北京地铁6号线常营站为背景，依据车站施工场区工程地质与水文地质条件，部署具体的前进式注浆堵水专项方案和效果检验方案，进展现场注浆堵水试验探究。探究结果说明：该技术在车站堵水试验中取得了较好的效果，根本能满意车站施工掌子面不带水作用的要求，值得推广。同时，为北京地铁车站施工提出一种新的堵水加固方法。关键词：北京地铁；前进式深孔注浆；堵水；现场试验 中图分类号：U231 文献标记码：A文章编号：1672-6073201701-00 -04Discussio

48、n on Advance Deep-Hole Grouting Techniques for Water Proofing of Metro Station ProjectLUO Furong1，JIANG Hua2,3，JIANG Yusheng3 (1. Beijing MTR Construction Administration Corporation, Beijing 100037; 2. Beijing Urban Construction Group, Beijing 100085; 3. School of Mechanics and Civil Engineering, Ch

49、ina University of Mining &Technology, Beijing 100083)Abstract: Considering the influence of underground water on Beijing metro construction, the technique of advance deep hole grouting was adopted for water proofing after analyzing the merits and weaknesses of existing water proofing technologies us

50、ed in subway station construction. Taking Changying Station on Beijing metro Line 6 as the engineering background and considering its geological and hydrogeological conditions, detailed advance deep hole grouting scheme and inspection schemes were deployed, and a lot of researches have been carried

51、out at the site of field test. It is concluded that advance deep hole grouting technology is more effective than the existing water proofing methods used in subway station construction, that it can meet the requirement that excavation face of the station is out of water, and that it offered a new wa

52、ter- proofing technique and can be taken for reference by similar projects.Keywords: Beijing metro; advance deep hole grouting; water proofing; field test样例8：地铁车站消火栓系统限制模式优化尉铭强，黄云峰北京城建立计开展集团股份有限公司，北京 100037摘 要：阐述地铁车站消火栓系统的限制模式，分析消火栓系统的操作模式，对手动启泵限制模式和自动启泵限制模式进展具体分析，从启动时间、运营管理、经济性等方面进展比照，得出手动限制模式在启动时间

53、上具有优势，但存在人为误操作的可能，自动限制模式比手动操作模式增加了压力开关流量开关限制系统，投资会有所增加。优化两种限制模式，在设计手动启泵限制模式时增加自动巡检或其他线路故障报警功能，在设计自动启泵限制模式时，增设低流量或者低压力报警的流量开关或者压力开关，在消火栓系统出现小流量泄漏时，能刚好报警，刚好修理，幸免消防泵在非消防状态下的错误启动。关键词：地铁车站；消火栓系统；限制模式；优化中图分类号 U231；F530.7 文献标记码 A文章编号 1672-6073201701-00 -04Optimization of Control Modes of Fire Hydrant Syste

54、m in Subway StationYU Mingqiang, HUANG Yunfeng (Beijing Urban Construction Design & Development Group Co., Ltd., Beijing 100037)Abstract: The control mode of fire hydrant system in subway station is elaborated and the operation mode of fire hydrant system is analyzed. The manual control mode and the

55、 automatic pump control mode are analyzed in detail. Judging from the perspective of starting time, operation management and economic performance, we come to the conclusion that manual control mode has an advantage in starting time, but there are the possibilities of human errors. The automatic cont

56、rol mode increases the pressure switch (flow switch) control system; therefore, the investment will be increased. Optimization of the two control modes is also discussed. In the design of manual pump control mode, the automatic inspection should be increased or alarm function for other lines should

57、be added. In the design of automatic pump control mode, the addition of low flow or low pressure alarm flow switch or pressure switch in the fire hydrant system is necessary. When small leakage happens, the system is supposed to alarm and get repaired in time, avoiding the fire pump mistakenly start

58、ed in the non-fire state.Keywords: subway station; fire hydrant system; control model; optimization样例8：城市轨道交通直流自耦变压器牵引供电系统郑琼林，杨晓峰，游小杰(北京交通大学电气工程学院，北京 100044)摘 要：现有城市轨道交通直流牵引供电系统普遍采纳走行轨回流，存在危害性很大的长时间迷流，且防不胜防。提出一种新的直流牵引供电系统，即直流自耦变压器(DCAT)牵引供电系统，能很好地解决轨道电位和迷流问题。以传统的直流牵引供电系统为根底，增加由电力电子开关和直流电容器构成的DCAT及回流

59、线，构成DCAT牵引供电系统。分析说明，DCAT牵引供电系统不仅能解决轨道电位和迷流，还可兼作储能装置，将列车再生制动时的能量回收再利用；同时，在线路绝缘耐压和车辆供电电压不作任何改动的状况下，DCAT牵引供电系统牵引网的电压是传统直流牵引供电系统牵引网电压的2倍，可大大削减线路的电压损失和线路损耗，从而进一步提高能源利用效率。关键词：城市轨道交通；AT供电系统；轨道电位；迷流电流；迷流电量；直流自耦变压器中图分类号：U239.5 文献标识码：A文章编号：1672-6073201603-00 -04DC Auto-Transformer Based Traction Power Supply

60、System forUrban Rail TransitTrillion Q ZHENG，YANG Xiaofeng，YOU Xiaojie (School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044)Abstract: Electrified urban transit systems dominantly employ running rails as the return-current path for the conventional traction power supply, whi

61、ch corrode electrified rapid-transit system itself and neighboring infrastructure components, such as buried pipelines and underground works destructively and chronically. One new structure of DC traction power supply system for urban transit vehicles is proposed in the paper, which is named DC auto

62、-transformer (DCAT) traction power supply system and can mitigate rail potential and stray current drastically. The DCAT traction power system consists of the conventional traction power supply system, the DCAT and negative voltage return feeder. Analysis results show that the DCAT traction power su

63、pply system can mitigate rail voltage drop stray current effectively and can feed regenerative braking power of one transit vehicles to the others because the DCAT which consists of power electronic switches and DC capacitors also serves as energy storage device. In addition, voltage between power f

64、eeder and return feeder inherited by the DCAT traction power supply system doubles that by its conventional counterpart. Consequently, both the voltage drop and the power loss from the traction network are reduced very considerably, without any modification to the insulation clearance of traction power network and the supply voltage of transit vehicles. Keywords: urban rail transit; AT power supply system; rail voltage drop; stray current; stray charge; DC auto transfor