计及振荡过程的地铁牵引网保护方法  

New Protection Method for Metro Traction Network Taking Account of System Oscillation Process

作　　者：李高翎[1] 田行军[2] 宋金川 

机构地区：[1]中铁电气化勘测设计研究院有限公司 [2]石家庄铁道大学电气与电子工程学院 [3]天津凯发电气股份有限公司

出　　处：《电气化铁道》2016年第3期34-38,共5页Electric Railway

摘　　要：通过对地铁牵引网馈线保护因震荡电流造成频繁误动作的原因进行分析,结合牵引供电网的特点,提出了组合DDL算法和高阶统计量算法的保护方法,先筛选出负荷电流,再筛选出震荡电流,从而得出短路电流。实测数据验证,该保护方法不仅可快速且准确识别出牵引网故障,而且原理清晰、工程实现方便。By analyzing the causes of frequent miss operation of feeder protection for subway traction network due to the oscillation current, with reference of the characteristics of subway traction network, a protection method combined with DDL algorithm and high-order statistics algorithm is proposed, the short circuit current is remained by screening out the load current firstly and screening out the oscillation current secondly. The tested data shows that the protection method is able to either distinguish the traction network faults quickly or implement conveniently the engineering with clear principles.

关 键 词：地铁牵引网 短路电流 振荡电流 高阶统计量 

分 类 号：U231.8[交通运输工程—道路与铁道工程]