自动过分相原理及故障分析.doc

毕业论文 自动过分相原理及故障分析 *** *** 2018年12月 毕业论文 自动过分相原理及故障分析 姓名 ： *** 指导教师 ： *** 专业 ： 铁道机车（电力机车）专业 学院 ： 铁道机车学院 答 辩 日 期 ： 2018年12月 单位 ： *** Abstract（Times New Roman 小5号字） 摘 要 PAGE 1 - - PAGE I - PAGE I- 摘 要 我国电气化铁路采用单相工频牵引供电系统,并利用分段换相供电的方式来平衡电力系统的三相负荷。为了防止异相短路并保证机车能顺利通过电分相,电气化铁路接触网上每20-30km就要装设一个电分相装置。如采用手动过分相方式,机车能否顺利通过电分相,依赖于司机的操作以及道路指示信号的可靠性。而一旦出现司机误操作或信号指示错误,就会造成机车带电闯分相,可能导致电弧烧毁承力索或受电弓设备等,这将严重影响牵引供电系统的安全运行。自动过分相装置能使机车在过分相时，不需要机车上主断路器断电，而靠电源的切换使列车以正常运行速度通过分相区段，由于不产生常规状态下列车过分相的减速，从而缩短了列车占用区间的时间，提高了线路的通过能力。 关键词：自动过分相；原理；故障 Abstract 目 录 - - PAGE II- PAGE 1 - Abstract Electrified railway traction power supply system adopts single-phase, three-phase load and use in Section power supply way to balance the power system. In order to prevent the wrong phase short circuit and ensure the locomotive can pass the electric phase, electrified railroad contact net every 20-30km to install a device such as a manual electric phase phase. The way, locomotive can pass the electric phase, depending on the drivers operation and the reliability of the road signal instructions. And once the driver desperation or signal indication error, will cause the locomotive running phase, may cause Cathryn arc burning or pantograph equipment, which will seriously affect the traction power supply system The safe operation of the system. The automatic splitting phase device can make the locomotive in excessive phase, does not need the locomotive main circuit breaker switching power supply power, and rely on the train to normal operating speed through phase section, due to no conventional state of the train passing speed, thus shortening the time interval of the occupation, improve through the line. Keywords: automatically over phase,principle,hitch ***毕业论文 第1章 绪 论 PAGE PAGE I 1 -9 1 - 9 目 录 TOC \o 1-3 \h \z \u 910 摘 要 I 26512 Abstract II 26390 第1章 绪 论 1 14932 1.1 课题背景及研究的目的和意义 1 3545 1