浅谈电气化铁路关节式电分相的应用.doc

铁道电气化毕业论文 题 目 浅谈电气化铁路关节式电分相的应用  目录 摘要 I Abstract II 第1章 电分相的简介 1 第2章 关节式电分相的结构特点 3 2.1 七跨锚段关节式电分相结构分析 3 2.2 八跨锚段关节式电分相结构分析 3 2.3锚段关节与线索的关系 4 2.4锚段关节的中性无电区与机车取流的双弓间距关系 5 第3章 关节式电分相在运营中存在的问题及线索的烧损 6 3.1 关节式电分相在运营中存在问题的分析 6 3.2 关节式电分相线索烧损原因： 8 第4章 关节式电分相运营及线索烧损问题的解决措施 10 4.1关节式电分相存在问题的改进 10 4.2 防止关节式电分相线索烧损的措施 11 总结 13 致谢词 14 参考文献 15 摘要 电分相是接触网的关键结构之一。电气化铁道牵引变电所向接触网供电的馈线是不同相的，不同相供电臂在接触网的相交处设置了绝缘结构，称电分相。目前电分相有器件(即分相绝缘器)式和锚段关节(即7跨、8跨或9跨锚段关节)式两种。随着列车速度的大幅度提高，器件式的电分相对电力机车受电弓冲击大（俗称硬点）成为困扰我国电气化铁路提速改造的主要问题之一。由于锚段关节式电分相（以下简称关节式电分相）有两个绝缘锚段关节组成，消除了器件式电分相存在的硬点大问题，在我国新建电气化铁路及提速改造中被普遍采用。目前，世界大多数国家的高速电气化铁路电分相也均采用该种型式。可以预见，它也必将成为我国电气化铁路的首选型式。本文就针对电气化铁路两种较常应用的关节式电分相的特点、以及电力机车通过关节式电分相时，引起牵引变电所跳闸，发生电弧烧损接触网线索的问题，提出防范措施，从而减少了关节式电分相引起变电所跳闸及烧损线索的情况，保障电力设备的安全及电气化铁路的正常运营。 关键词 ：电气化；电分相；过电压；锚段关节 Abstract Electric phase is the key structure of the catenary. Electrified railway traction substation to the feeder catenary power supply is different phases and different phase power arm in the catenary set at the intersection of the insulation structure, called electric phase. Phase with the current electrical devices (ie, phase insulator) type and the anchor segment joints (ie, 7 cross, 8 or 9 cross anchor cross-section of joints) two. With the substantial increase in train speed, the device type of electrical sub-electric locomotive pantograph relatively large impact (commonly known as a hard point) as the problem in Chinas electrified railway speed the transformation of one of the main problems. As the anchor segment joints electric phase (hereinafter referred to as joint electric phase) has formed two joint insulation anchor segment, eliminating the electric phase device hard point big problem there, in our new speed electrified railway and the transformation was commonly used. Currently, most of the worlds high-speed electrified railway power phase were also used by the type. It is foreseeable that it will become the preferred type of electrified rai