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青藏铁路35kV配电网由于所处环境恶劣,线路长度大,当线路上发生接地或短路故障后,现有的继电保护系统无法准确地判断故障区段,只能通过逐级试拉的方式确定故障位置,整个过程涉及大量的倒闸操作.操作复杂且所需时间较长,通过该方式最终可将故障定位到两变电所之间
Due to the harsh environment and the length of the line in the 35kV distribution network of Qinghai-Tibet Railway, the existing relay protection system can not accurately determine the fault section when the grounding or short circuit fault occurs on the line. Only by way of trial and error Determine the location of the fault, the entire process involves a large number of switching operations. The operation is complicated and takes a long time, through which the fault can be finally located between two substations