一、概述由铁路“自动闭塞”(简称自闭)信号的制式所决定,自闭信号供电线路具有沿铁路线分布,大多处在郊外和偏僻的田野,经常穿越村庄、住宅、河道,路径复杂、供电半径较大等特点。因此,供电线路极易受到外界的干扰而出现短路、接地、断线、倒杆等故障而中断信号供电。当故障发生时,因查不到故障地点而长时间延误供电的现象经常发生,严重影响了铁路运输安全。如何利用先进的技术 I. Overview By the railway “automatic blockage” (hereinafter referred to as self-closing) signal of the decision, self-closing signal power supply lines along the railway line distribution, mostly in the suburbs and remote fields, often through villages, houses, rivers, Complex path, larger power supply and other characteristics. Therefore, the power supply line is extremely vulnerable to external interference and short circuit, ground, wire breakage, down bar and other failures interrupt signal power supply. When the fault occurs, the phenomenon of prolonged delay in power supply can not be found because of the fault location, which seriously affects the railway transport safety. How to use advanced technology