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铁路自闭／贯通线路故障的快速精确定位,一直是困扰电气化铁路安全运行的技术难点。在分析故障指示器在电力输配电线路故障定位应用效果的基础上,提出结合无线通信设计铁路供电线路适用的故障探测节点,即线上无线节点,来实现铁路自闭／贯通线的故障定位。介绍了基于线上节点的定位实现原理,并针对自闲贯通线路特点,通过理论分析和仿真实验相结合,提出了节点供电方式、通信频率、检测参数设置值等关键问题的解决方案,实现了线上无线节点的软硬件设计,总结了所设计节点的功能特点。
The rapid and accurate positioning of railway autistic / through-line faults has always been a technical difficulty that plagues the safe operation of electrified railway. On the basis of analyzing the application effect of fault indicator in the fault location of power transmission and distribution lines, it is proposed to design the fault detection node suitable for the railway power supply line by means of wireless communication, that is, the wireless node on the line to realize the fault location . The principle of positioning based on on-line nodes is introduced. According to the characteristics of free-running links, a solution to the key problems such as node power supply mode, communication frequency and set value of detection parameters is put forward through theoretical analysis and simulation. Hardware and software design of wireless nodes, summarizes the functional characteristics of the designed nodes.