毕业设计--通过式牵引变电所电气设计.doc

毕业设计--通过式牵引变电所电气设计
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 pletedBy checking various results of the calculation the design of this thesis is reasonable and feasible