某AT牵引供变电系统设计.docx

某AT牵引供变电系统设计 Design of AT Traction Power Supply and Transformation System 2021 届 电气与电子工程学院 专 业 电气工程及其自动化 学 号 学生姓名 指导教师 完成日期 2021年5月30日 摘 要 在铁路的组成部分中，牵引变电所是必不可少的，是可以实现铁路电能产生跟分配的场所，并且可以将高电压转换成铁路机车运行时候的电压。牵引变电所是确保整个铁路可以安全经济的运行。 本设计以牵引变电所为背景，设计出AT供电方式下的系统主接线。 首先我们要知道牵引变电所需要解决的问题和设计的目的。 然后设计出满足要求的电气主接线，进行牵引变电所变压器容量的计算。对于牵引变电所的主接线设计，还得通过一系列的经济、技术的对比才能确定。主接线确定之后在进行短路点以及短路容量的计算，电气设备的选择与校验，并联电容补偿装置与并联无功参数的设计与计算。并且还要在这些的基础上加装继电保护，防雷保护来确定牵引变电所的正常运行，最后再用CAD来绘制出主接线。 最后通过上面的方法来设计出一个完善的AT供电方式下的牵引变电所。 关键词：AT供电方式 牵引变电所 牵引变压器 Abstract In the part of railway, traction substation is essential, it can realize the generation and distribution of railway electric energy, and can convert high voltage into the voltage of railway locomotive.Traction substation is to ensure the safe and economic operation of the whole railway. This design takes the traction substation as the background, designs the system main wiring under at power supply mode. We need to know the problems and design purposes of traction substation, then design the main electrical wiring to meet the requirements, and calculate the transformer capacity of traction substation. On this basis, we design the main electrical wiring and calculate the transformer capacity of the traction substation. The main wiring design of traction substation can only be determined through a series of economic and technical comparison. After the calculation of the short-circuit compensation device and the calculation of the short-circuit compensation device, the calculation of the short-circuit compensation device and the calculation of the main parameters are carried out. And on the basis of these, relay protection and lightning protection should be added to determine the normal operation of traction substation. Finally, CAD is used to draw the main wiring. A perfect traction substation under at power supply mode is designed by