摘要
研究目的:电气化铁路站场枢纽接触网结构复杂、分支众多,一旦发生故障,只能依靠人工巡查找寻故障点,费时费力。为解决这一难题,本文通过在变电所馈出线上网点及每一分支股道接触网承力索安装电流检测传感器,检测计算电流大小与方向,进而提出一种基于电流方向的站场接触网故障精确定位方法。研究结论:(1)可根据上网点电流的大小判断区域内是否存在故障,一旦发生故障,监控主机收集所有电流检测传感器采集的电流波形与故障动作情况等信息;(2)当检测到站场边沿电流传感器动作时,则故障区段位于该传感器外侧;(3)计算各相邻传感器电流夹角,可得到接触网电流方向,根据电流反方向信息,可精确定位故障区段;(4)本研究成果可应用于电气化铁路站场枢纽接触网故障精确定位,适用于牵引供电领域。
Research purposes:The catenary of the electrified railway station and yard hub has complex structure and numerous branches.Once a fault occurs,manual inspection can only be relied on to find the fault point,which is time consuming and laborious.To solve this problem,current detection sensors are installed on the nodes of the substation outgoing line and the catenary of each branch track to detect and calculate the current amplitude and direction.Accordingly,an accurate fault location method for station and yard catenary based on current direction is proposed in this paper.Research conclusions:(1)The current amplitude of the grid point on the outgoing line can determine whether there is a fault in the station and yard hub.Once the fault is found,the monitoring computer collects the current waveform sampled by all current detection sensors,and the occurred fault information uploaded by the edge current sensor.(2)Once the fault is found on the edge current sensor,the fault section is in the outside of the sensor.(3)The current angles of each adjacent sensors are calculated,and the current directions of the catenary are obtained.Once the opposite direction current is found,and the fault section can be determined.(4)The research results can be applied to the precise location of the fault catenary in electrified railway station and yard hub,and are suitable for the field of traction power supply.
作者
李喆
LI Zhe(Guoneng Shuohuang Railway Development Co.Ltd,Suning,Hebei 062350,China)
出处
《铁道工程学报》
EI
CSCD
北大核心
2024年第9期72-76,共5页
Journal of Railway Engineering Society
基金
朔黄铁路科技开发项目基金(SHTL-18-17)。
关键词
站场枢纽
接触网故障
故障定位
电气化铁路
station and yard hub
catenary fault
fault location
electrified railway
