毕业设计--通过式牵引变电所电气设计.doc

通过式牵引变电所电气设计
The Electrical Design of the Through Type Traction Substation
摘要
牵引变电所是电气化铁路的重要组成部分,它直接影响整个电气化铁路的安全与经济运行,是联系供电系统和电气化铁路的桥梁,起着变换和分配电能的作用。电气主接线是变电所的主要环节,电气主接线直接关系着整个变电所的电气设备的选择、配电装置的布置、继电保护和自动装置的确定,并且是牵引变电所电气部分投资大小的决定性因素。基于上述原因,本文对牵引变电所的结构和接线方式进行了介绍。通过负荷计算选取了主变压器的型号和容量,同时对主变压器的接线方式进行了详细的说明。通过研究和比较确定了本次设计所采用的主接线方式,并运用AutoCAD软件绘制出了主接线图。短路电流计算是本次设计的关键部分通过计算结果对断路器、隔离开关、电压互感器、电流互感器、母线和避雷器这些电气设备进行了选型。另外对部分电气设备进行了介绍。从而,完成了本次课程设计。通过对各种计算结果的校验本文设计得出的结果是合理的、可行的。
关键词: 牵引变电所变压器主接线
Abstract
Traction substation is an ponent of the Electrified railway, it has a direct impact on the Electrified railway, used as intermediate links to connect power plants and users. it plays an important role in the transformation and distribution of Electrified railway. Electrical wiring is the main link of the main substation, also, the main electrical wiring directly is related to the development of the entire electrical substation, equipment selection, distribution equipment layout, protection devices and automatic identification, so it is the decisive factors of electrical investment. This thesis introduces the structure and connection modes of single-phase traction substation. Firstly, it selects the type and capacity of main transformer through the calculation of load, meanwhile, it presents the connection mode of the main transformer in detail, and maps out main connection with AutoCAD. Calculating short-current is the key of this thesis, and breakers, isolating switch, voltage transformer, current transformer, bus, arrester are selected according to the results of calculation. At the same time, some electrical devices are introduced. At last, the reformation of Course design checking various results of the calculation, the design of this thesis is reasonable and feasible.
Keywords: Traction Substation Transformer Main connection
目录
第1章概述 1
课题研究的目的意义 1
电气化铁路的国内外现状 1
论文研究的内容 2
第2章主接线的设计 3
牵引变电所主结线的概述 3
电气主接线基本要求 3
高压侧电气主接线设计应遵循的主要