摘要：在石油资源逐渐枯竭，环保呼声日益高涨的今天，发展电力牵引具有十分重要的意义，是铁路牵引动力的发展方向。因此本设计的主要内容是对牵引供电系统的保护，根据牵引供电系统与电力系统相关要求规范进行设计。
牵引供电系统的保护首先根据给定的原始资料，依据给定条件，分析并采取相应的保护。按照相关规程完成牵引供电系统中变压器、牵引网、110kV输电线路、母线、防雷保护等的整定计算，并根据其数值，选择与之相适应的保护装置、电流互感器、电压互感器等设备的型号，对牵引供电系统起到有效的保护作用。
通过本毕业设计，初步掌握一个中小型牵引供电系统保护的设计思想、内容、方法和步骤。
关键字：继电保护；牵引供电系统；整定计算；设备选择
Abstract：In the oil resource gradually dried up, environmental protection consciousness growing today, the development of electric traction has very important sense,it is the development direction of railway traction power. Therefore, the main contents of this design is the protection of traction power supply system, according to the traction power supply system and power system requirements specification for the design.
Traction power supply system protection according to the given data, and according to the given conditions, analysis and take the corresponding protection. In accordance with the relevant procedures performed in traction power supply system of transformer, traction network,110kV transmission line, bus, lightning protection, setting calculation, and according to its numerical value, the choice to adapt to the protection device, current transformer, voltage transformer and other devices of traction power supply system model, an effective protective effect.
Through this graduation design, the preliminary master a small traction power supply system protection design idea, content, method and steps.
Key words:Relay protection;Traction power supply system;Setting calculation; Equipment selection
我国电气化铁路特别是高速铁路的迅速发展，对牵引供电质量提出了更高的要求，电气化铁路的电能质量特性也呈现出新的特征。在高速铁路为我们出行提供方便的同时，也暴露出了它的一些问题。由于我国电气化铁路运行速度的提高、运营密度的加大，所以对牵引供电系统设备的质量、建设、管理、维修、运营等都提出了比以往更高的要求。高速铁路带来的经济效益和对环境的无公害，将会逐渐成为新时期铁路的代表。 因此对牵引供电系统的继电保护尤为重要，只有保证了它的安全性、可靠性，才能让其发展继续向前。
本设计针对牵引供电系统会出现的问题，采取继电保护措施，对牵引网的保护、牵引变压器的保护整定方式跟电力系统中保护整定的不同点，采取与之相适用的保护方式、保护装置。
