地铁直流牵引网短路故障测距方法及装置

Short Circuit Fault Location Methods and Devices for Subway DC Traction Network

对地铁直流测距原理进行分析,在常规阻抗法测距的基础上通过建立电路模型选定特定回路进行计算,得出故障点距离。对测距装置的各功能模块组成及工作原理进行说明,并通过实际线路的短路试验验证了该测距原理的正确性及故测精度满足要求。

Analysis is made on principles of fault location for subway DC traction network, the circuit model is established and the distance of fault point is obtained through calculation by selecting a certain circuit on the basis of a conventional impedance fault location method. Descriptions are given on composition of various functional modules and working principles of fault location devices, and short circuit tests are carried out to verify that the fault location principle is adequate and is able to meet the requirements of fault location accuracy.