基于双端阻抗法和贝瑞隆模型的故障定位方法研究  

Research on Fault Location Method Based on Two-terminal Impedance Method and Bergeron Model

作　　者：王志亮 段俊东[1] WANG Zhi-liang;DUAN Jun-dong(College of Electrical Engineering and Automation,Henan Polytechnic University,Jiaozuo 454000,China;Zhengzhou Rail Transit Co.,Ltd.,Operating Branch,Zhengzhou 450000,China)

机构地区：[1]河南理工大学电气工程与自动化学院,河南焦作454000 [2]郑州市轨道交通有限公司运营分公司,河南郑州450000

出　　处：《通信电源技术》2018年第2期85-88,90,共5页Telecom Power Technology

摘　　要：针对目前城市轨道交通供电系统直流侧故障比较复杂的问题,主要研究了轨道交通供电系统直流侧短路故障的定位方法。为解决城市轨道交通供电直流侧的非金属短路故障或过渡电阻小的问题,在传统阻抗法的基础上,与贝瑞隆模型相结合,对非金属短路故障进行了研究。对于阻抗法定位方案不能适用的问题,提出了基于贝瑞隆模型的故障定位方案,实现对该类故障的定位。该方法能够克服阻抗法定位故障瓶颈,适用于解决非金属导体短路或符合贝瑞龙模型的低精度定位模型的故障定位。两种方法相互配合、互相补充,实现了城市轨道交通供电直流测的短路故障定位。最后,通过搭建实验室模拟环境,利用仿真模型,验证了此类故障定位的有效性和真实性。In view of the complexity of DC side fault of urban rail transit power supply system, the locating method of DC side short circuit fault of rail transit power supply system is mainly studied. Based on the traditional impedance method and combined with the Bergeron model, the fault location method based on impedance method and Bergeron model is proposed in this paper. This method overcomes the problem of fault location by impedance method, which is only applicable to the protection of non operative metal fault and the low accuracy of fault location based on Bergeron model. The two methods are complementary to each other, and the short circuit fault location of urban rail transit power supply DC measurement is realized. Finally, the simulation verify the correctness and effectiveness of the fault location method.

关 键 词：短路故障 阻抗法 贝瑞隆模型 故障定位 

分 类 号：U264.3[机械工程—车辆工程]