城市轨道交通双边供电系统牵引网故障测距研究  

Study on Fault Location of Traction Network of Bilateral Power Supply System for Urban Rail Transit

作　　者：侯峰 王帅 李鲲鹏 HOU Feng;WANG Shuai;LI Kunpeng

机构地区：[1]广州地铁设计研究院股份有限公司 [2]西南交通大学电气工程学院

出　　处：《电气化铁道》2023年第4期79-82,93,共5页Electric Railway

摘　　要：针对电抗法应用于双边供电系统牵引网故障测距不准的问题,基于双边供电牵引网的故障电气耦合特性,揭示故障位置与双端电气量之间的映射关系,提出一种精确的故障测距算法。以广州地铁18号线牵引供电系统为例,通过MATLAB仿真综合比较本文所提双端电气量故障测距算法、传统电抗法、单/双端行波测距算法的测距精度,验证了双端电气量故障测距算法的正确性及应用于各种故障场景的精确性。With regard to the problem of inaccurate fault location of traction network of bilateral power supply system by means of application of reactance method,mapping relationship between fault location and two terminal electrical quantity are revealed on the basis of the characteristics of electrical coupling of the fault of the bilateral traction power supply network,and a accurate fault location method is proposed accordingly.Taking the traction power supply system of Line 18 of Guangzhou Metro as an example,the accuracy of the two terminal fault location algorithm,the traditional reactance method and the single/double terminal traveling wave fault location algorithm proposed in the paper is comprehensively compared through MATLAB simulation,and the correctness of the two terminal fault location algorithm and the accuracy of its application in various fault scenarios are verified.

关 键 词：故障测距 双端电气量法 行波法 测距精度 

分 类 号：U231.8[交通运输工程—道路与铁道工程]