摘要
在深入研究机车带负荷过分相产生电弧机理的基础上,提出了自然过分相技术方案.该方案的基本原理是在车载变压器高压侧和牵引供电臂末端分别并联一个电容,当机车过分相时,牵引网和车载电气传动系统实现等电位分离,避免了机车过分相时产生电弧.自然过分相方案和现在使用的3种方案相比,具有过分相断电时间短,结构简单,投资少,运行维护量小等优点.自然过分相方案还能大幅度降低机车运行时离线电弧的强度.
A scheme of naturally passing neutral sections was proposed based on the mechanism of arcing when a train passes the neutral section. In the scheme, a shunt capacitor is connected to both the pantograph and the high voltage winding of the transformer on board. When the locomotive passes the neutral section, there is no arcing because the electric traction system on board has the same potential as that of the catenary. Compared with 3 existing schemes for passing neutral sections, the proposed one is shorter in power-off time, simpler in configuration, and less in investment and maintenance. It also reduces arc intensity significantly when the pantograph bounces on the contact wire.
出处
《西南交通大学学报》
EI
CSCD
北大核心
2007年第6期680-684,690,共6页
Journal of Southwest Jiaotong University
关键词
过分相
电弧
受电弓
接触网
方案
passing neutral section
arc
pantograph
catenary
scheme
