摘要我国现今最主要的交通运输方式就是铁路运输，同时近年来我国正大力发展 铁路建设，而高速重载铁路又是目前铁路发展的主要方向。本文所主要研究的自 耦变压器供电方式，因其无可比拟的性能特点而作为电气化铁路供电方法的不二 之选有着极其广阔的应用前景。同时其不一样的设计方法在性能方面也有着较大 的差别。72242

本文最终研究结果是通过向各种自耦变压器供电形式以及 AT 牵引变压器的 接线方式进行比较研究以求获得一套经济合理的电气化铁路供电体系。这套电气 化铁路供电体系对于我国铁路的发展与提高铁路运行效率、降低铁路建设成本将 有着极为深远的影响。

针对本文研究对象，本文首先对其应用最为广泛五种供电形式：DF 形式、

DN 形式、AT 形式、BT 形式以及 CC 形式各自的特点分别进行对比研究。 接着本文对 AT 牵引网的几类主要形式进行研究，并对单线、双线、全并联

这三种形式的电流分布、等值阻抗、短路电流分别开展研究对比。

最后本文对 AT 牵引变压器的几类常见接线方式进行研究，并分别对单相、 SCOTT、Vv、YNvd 接线方式以及其他方式下变压器的原副边电流关系分别开展 研究对比。

本论文通过以上方面的研究工作，以求获得一套最为经济合理的电气化铁路 牵引供电系统。

该论文有图 26 幅，表 3 个，参考文献 27 篇。

毕业论文关键词：牵引供电系统 AT 供电方式 AT 牵引网 AT 牵引变压器接线方式

Research on Power Supply Mode of AT And Connection Mode of Substation

Abstract The most important means of transportation in our country nowadays is the railway transportation, also in recent years in China is vigorously developing railway construction, high speed and heavy haul railway is the main direction of railway development at present。And in this paper, we study in the self coupling transformer power supply, because of its incomparable performance characteristics as electrified railway power supply method of choice has a very broad application prospects。 Meanwhile at power supply system in different forms of economic and technical performance has a larger difference。

The final result of this paper is to compare the power supply form of a variety of self coupling transformer and the connection mode of AT traction transformer。 In order to obtain a set of economical and reasonable electrified railway power supply system。 The development of high-speed and heavy load railway and energy conservation has a very important significance。

Firstly of electrified railway traction power supply system is the most common of five kinds of power supply: direct power supply, direct power supply system back to streamline, self coupling transformer (A-T) power supply, suction flow transformer (BT) power supply mode and a coaxial cable (CC) power supply respective characteristics for comparative study respectively。

Then the of at traction network of several main forms are studied, and the singlet at traction network, double at traction network, all parallel at traction current and current distributions, equivalent impedance and short-circuit current were analyzed and compared。

At the end of this paper of at traction transformer some kinds of connection forms were studied, and for the single-phase wiring, Scott wiring, VV connection, YNvd connected and other connection of transformer primary and secondary relations and current transformer asymmetry coefficient were calculation and research。

This paper through to the above research work, get a set of superior performance, economic and reasonable AT power supply system。