Two kinds of new on - line monitoring methods , which are based on measuring primary , secondary currents and voltages to calculate the short - circuit reactances of windings for detecting the deformation windings of power transformer , are proposed in the paper . the methods used for on - line measuring the short - circuit reactances of traction transformer in electric railways , are designed 本文提出了两种在线监测变压器绕组变形的方法，通过在线监测变压器绕组原、次边的电压和电流量，实时计算变压器绕组的短路电抗来判断变压器绕组变形情况，并对电气化铁路主要接线型式的牵引变压器绕组变形的在线监测方案进行了设计。
Ias , psmis and the information exchange and processing between these two systems have important effects on some aspects , such as the running and management ability of electrified railway , the maintaining and maintenance measures of electrical equipments , the economic efficiency of traction department , and so on 牵引变电所综合自动化系统、牵引供电运营管理信息系统及其之间的信息交换与处理在提高电气化铁路的运行和管理水平、转变设备维护与检修手段、减员增效等方面有着重要的作用。
It satisfies the requirements of china standard ( gb / t 14549 - 93 ) , the harmonic and negative sequence component leaded by the input of electrified railways traction load are measured in si yan qiao substation . this thesis mainly analyzes the effects on the electric elements , feeding system losses , protection system and automatic device , and proposes corresponding schemes according to the problems occurring in si yan qiao substation 本文实测了泸州石燕桥变电站电气化铁路牵引负荷注入电网的谐波和负序分量，着重分析了电力系统中电气设备、供电网线损、继电保护和自动装置受电气化铁路谐波和负序的影响，并针对石燕桥变电站出现的问题提出了对策。
The characters of traction power supply system and the problems of routine designs in the electrify railroads are described in chapter two where two main methods of optimize design in former traction power supply systems are emphasized , which realize the optimize methods of traction power supply system by using network multiple address selecting technique , and based on traction load along line distributing function , furthermore construct the optimization mathematical model ' s optimize method of traction power supply system by means of mathematical planning method ' s application 优化设计是近年来发展起来的一项新技术，已经在工程设计的一些领域中得到了广泛应用。本文通过对优化设计技术在电气化铁路牵引供电系统应用这一课题进行研究，以期为牵引供电系统在实际工程设计中提供一种新的使用方法。通过分析电气化铁路牵引供电系统的特点和常规设计中存在的问题，阐述了牵引供电系统优化设计的两种主要方法。
In addition , through analyzing on the features of freight and passenger current , predicting the change of railway volume , the article discusses available technique of the speeding - up economic benefit , this provides a good theoretic basis for the speeding - up project . by investigating on jingguang line and provide a technic guarantee and prophase preparation , and offers an important theoretic basic and precious practical experience to our electrization railway as well 通过对京广线列车提速的全面研究以及郑州- -漯河段列车提速试验的成功，不仅为京广线列车提速提供了技术保障和前期准备，也为我国今后电气化铁路提速提供了理论依据和宝贵的实践经验，具有一定的指导和借鉴的意义。
Nowadays , it is certainly demanded for the electrified railway to modernize traction power - supply technology and management technology . with the aid of the development of micro - electronic , computer and network communication technology , it is possible to use these technologies to improve the extent of automation and increase the speed of railway modernization 当前，牵引供电技术和运营管理技术的现代化是对电气化铁路的必然要求，微电子技术、计算机技术和网络通信技术的进步为铁路现代化的实现提供了条件，研制牵引变电所综合自动化系统和牵引供电运营管理信息系统正是应时所需。
Abstract : the paper introduces the erection of the steel box girder of a long - span steel box - concrete composite bridge using broad double guide beam without affecting the normal operation of electrified railway and marshalling yard under the bridge , including construction plan , design of gantry crane and guide beam , as well as key points of construction technology 文摘:介绍在保证电气化铁路、编组站场正常运营情况下，运用宽幅式双导梁解决大跨度钢箱混凝土结合梁桥的钢箱梁架设技术难题，重点阐述了施工方案，龙门吊、导梁设计，工艺要点等。
Directional solidified cu - cr in - situ composites have high strength , high electricity but without such problems of interfacial contamination and low stability as in the conventional man - made synthetic composites due to self - driven engender in the process of directional solidification , so this composites are expected to be used as contact cable , which is made for trunk line electrification 定向凝固cu - cr自生复合材料由于具有高强度、高导电性，同时因其在凝固过程中自动形成而避免了人工复合材料中长期存在的界面污染、稳定性差等不足，因而在电气化铁路用电车线材方面有广阔的应用前景。
Given that the drawing of plane arrangement maps of electrified railway contact net is one of the important junctures of the whole contact net design , starting from the perspective of system , the paper firstly analyzes the drawing task of the plane arrangement maps of railway contact net in details and presents the structure and function of the system , secondly discusses the formulation of consumer menu and dialogue frame and lists the main controlling program of dialogue frame , then by analyzing the involved data of originally drawing course gives and realizes the management of the original drawing data , which achieves the drawing of choosing inter - station and station , the establishment of drawing papers and drawing form , the setting - up of character height and the drawing form coordinate points and drawing starting points and the preserving routes of data documents of drawing form and the note - marking column and the size of subsidiary table 系统是基于autocad2002平台，在visuallisp环境下，采用面向对象的编程方法，运用参数化设计的原理，设计开发了运行于windows9x ~ xp上的电气化铁路接触网平面布置图参数化绘图系统。电气化铁路接触网平面布置图的绘制是接触网整体设计中极其重要的一环，本文从系统的观点出发，首先对铁路接触网平面布置图的绘制工作做了详细分析，提出了系统的结构和功能；然后详细讨论用户菜单及对话框的定制，并列出主要的对话框控制程序；接着通过对初始化绘制图形过程中所涉及的数据的分析，提出并实现对初始化绘图数据的管理。
