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双语推荐：地铁供电

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首先介绍了地铁供电系统的构成,简要分析了DC1500V三轨牵引供电的基本原理。利用MATLAB/Simulink工具建立某条实际运行的DC1500V三轨供电方式的地铁线路数学模型,对不同点的短路电流和列车启动电流仿真分析后,举例说明了如何通过对电流上升率、电流增量和电流上升持续时间的测量来区分故障情况和正常运行的情况。为地铁馈线保护的配置提供了实用的理论基础。
This thesis firstly introduces the construction of metro power supply system and analyzes briefly the basic principle of DC1500V triple rail traction power supply. By establishing the mathematical model of DC 1500V triple rail power supply circuit based on MATLAB/Simulink and conducting the simulation and analysis of different short circuit currents and train starting current,this paper illustrates how to distinguish between the fault and normal conditions on the basis of current increase rate,increment and rise duration,which may lay some theoretical basis for the metro feeder protection configuration.

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地铁车站用电设备类型多，低压配电系统复杂，低压配电系统的设计直接关系到供电的可靠和地铁的安全运行。优化配电设计，对节约能源、降低投资和运营成本、方便系统维护具有重要的意义。
Subway station many types of electrical equipment, low-voltage distribution system complexity, design and low voltage distribution systems is directly related to the safe operation of the power supply reliability and subway.Optimization of power distribution design,save energy,reduce investment and operating costs,easy system maintenance is of great significance.

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社会经济的发展带动着城市交通量的持续增长。供电系统为地铁的正常运营提供所必须的电能，一旦发生供电中断，整个交通运输线路就会发生瘫痪，严重的甚至危害到乘客及客运安全。所以，对地铁牵引供电系统的可靠性展开研究尤为重要。
The development of the social economy has driven continued growth in city traffic. The normal operation of po- wer supply system provides the necessary power for subway, and in case of power outage, the transportation lines wil be paralyzed and worse more, this may endanger the safety of the passengers. Therefore, it is particularly important to study the reliability of metro traction power supply system.

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本文对城市地铁采用的直流750V和直流1500V供电方式、架空接触网和第三轨进行了较为全面地介绍，对不同供电方式进行了比较。从受电质量、安全方面、景观效果和资金投入方面，对架空接触网和第三轨进行了全面地对比。结论证明，两者各有其优缺点。
This paper has carried on a more comprehensive introduction to the modes of 750V and 1500V power supply of city subway, the overhead contact line and the third, for di- fferent power supply and compared the modes. The author ca- rried on the contrast to the overhead contact line and third rail from the aspects of power quality, safety, landscape effect and monetary investment. The conclusion showed that each of th- em has its advantages and disadvantages.

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基于大分区环网供电模式下传统级差保护配置方案无法实现保护选择性的问题，提出一种基于光纤纵差与过流保护配合的大分区供电保护方案，阐述了该保护方案的保护硬件配置和保护逻辑配置。通过对保护装置正常运行、保护装置或保护通道故障情况下典型故障保护动作的分析，说明了该大分区供电保护方案在地铁使用环境中应用的可行性。
The paper puts forward a large section power supply protection solution based on optical ifber differential and over-current protection cooperation, elaborates the protect hardware configuration and the protection logic configuration. Through analysis on typical fault protection actions under conditions of protective devices normal operation, protective devices or protective channel faults, the paper illustrates feasibility of application of this large section power supply protection solution in metro environment.

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地铁建设进入铺轨阶段,轨道专业与土建、通信、信号、供电与风水电安装等多专业均存在平行或交叉施工。根据地铁铺轨的系统性特点和多专业施工配合需求,提前预测施工过程中出现的专业接口和交叉界面,制定接口管理和交叉施工预防措施,协同各专业间加强计划统筹和相互配合,为持续推进铺轨创造必要施工条件。
When metro construction has entered a stage of track laying, track and other different works including civil engineering, communications, signaling, power supply and installation of ventilate and water supply have parallel interference or crossover interference during the construction. Based on the systemic features of metro track laying construction and requirements of multi-specialty construction for coordination, it is very necessary to predict in advance different works interface and cross interface to regulate interface management and work out cross-construction precautions. To collaborate and cooperate with each other to improve overall plan, it serves the goal of continuous advance and provides necessary conditions for track laying construction.

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分析双边取流和单列列车运行状态下的杂散电流。在双边取流的情况下，建模分析两列列车在同一区间内运行时地铁牵引供电产生的杂散电流，并获得了该模型在特殊参数情况下的解。
Stray current on a train operation and its traction power coming from two traction power substations are analyzed. A new stray current model is built for the situation that the stray current is produced by the traction power of two trains which operate at the same time in a power supply interval and receive power from two adjacent traction power substations. The solution of the model is obtained for some special parameters.

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介绍了新型直线电机驱动式地铁受电弓的技术参数、结构、工作原理及设计特点。该新型地铁受电弓采用升弓弹簧装置升弓，直线电机驱动克服升弓弹簧力矩实现降弓，采用蓄电池供电方式，无需供风风源。电机集成了升降弓限位模块，当受电弓完全升弓到位时和降弓到位时，电机都能停转，保证了受电弓正常升降弓。
Introduces the technical parameters,structure,working principle and design features of the new type of metro panto-graph with linear motor.This new type pantograph can be raised by spring lifting-device,and lowed by linear motor to overcome the torque of spring lifting -device,it adopt electric power from storage battery without compressed air.The linear motor is equipped with lifting and lowering unit which limits the rotation of motor,it ensures the lifting and lowing action of pantograph.

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选取首都圈地区红山、昌黎、怀来、昌平流村、密云牛栏山等11个地震台的数字电磁波资料，利用最大熵谱法，对其分钟值和时值资料进行谱成分分析，发现数字电磁波日变化12 h半日波和24 h全日波的成分较强。通过环境调研和对比分析，总结数字电磁波的常见干扰源为地电阻率干扰和地铁干扰等，干扰形态分别为地电阻率供电时段5 min左右的远超数字电磁波本底的扰动和地铁运行时段的正脉冲变化。
The spectrum characteristics of electromagnetic diurnal variation have been identified by maximum entropy method,based on electromagnetic data from eleven stations at Chinese metropolitan area,including Hongshan,Changli and Huailai,etc.This study shows that,the amplitude of the 12 h and 24-25 h semidiurnal wave is larger than others.The disturbance sources of electromagnetic date include geo-resistivity power supply and subway interference. The interference pattern caused by supplying periods of earth resistivity is electromagnetic disturbance far more than the background about 5 min,and that caused by subway is positive pulse change at the running time.

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?：深圳地铁三号线采用直流1?500?V接触轨装置供电，结合接触轨装置测量工作实际，介绍接触轨水平尺寸、导高尺、接触轨缝隙、集电靴参数等测量参数和要求，总结接触轨和集电靴的关键检测点和测量控制要点，以及接触轨测量工作所采用的测量设备的计量检定规程。
DC?1?500?V?contact?rail?power?supply?device?is?used?in?Shenzhen?metro?line?e.?By?combining?with?the?actual?measurement?work?of?contact?rail?device,the?authors?introduce?the?measurement?parameters?and?requirements?on?horizontal?size?of?contact?rail,height?guiding?ruler,?gap?of?contact?rail,collector?shoes,etc.??The?authors?also?summarize?the?key?monitoring?points?of?contact?rail?and?collector?shoes?and?gives?the?major?concerns?on?measurement?control,explain?the?verification?regulation?on?measurement?instruments?used?for?the?measurement?work?of?contact?rail.

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