基于MATLAB/Simulink的高速铁路保护动作范围研究  

Study on Range of Protection Action of High-speed Railway Based on MATLAB/Simulink

作　　者：孙占成 张爱军 李玲 吴姗姗 SUN Zhancheng;ZHANG Aijun;LI Ling;WU Shanshan

机构地区：[1]中国铁路北京局集团有限公司北京供电段

出　　处：《电气化铁道》2025年第1期36-40,共5页Electric Railway

摘　　要：随着我国高速铁路日益发展,对铁路系统的运行可靠性提出了更高的要求,继电保护装置的可靠动作对于保证供电系统可靠运行十分重要。大部分牵引变电所的馈线保护测控装置采用多种保护并行的保护逻辑,但由于各项保护的指标参数不一致,对各保护的动作区域难以直观判断,对于继电保护装置跳闸区段缺乏精确的定量判断。针对该情况,本文基于Simulink仿真平台和某所继电保护定值,将该所保护均归算至同一X-R图像中,可以快速判断当供电臂某处发生故障时保护动作情况,同时排除了测量量极小时测量结果不可靠的情况,保证了动作范围的精确性。With the increasing development of high-speed railways in China,higher requirements have been put forward for the operational reliability of the railway system.The reliable operation of relay protection devices is crucial for ensuring the reliable operation of the power supply system.Most of the feeder protection measurement and control devices in traction substations adopt multiple parallel protection logic,but due to the inconsistent indicator parameters of each protection,it is difficult to intuitively judge the action area of each protection,and there is a lack of accurate quantitative judgment for the tripping section of the relay protection device.With regard to the situation,on the basis of the Simulink simulation platform and a certain relay protection setting,the protection of the station is all included in the same X-R image,which can quickly determine the protection action when a fault occurs in a certain part of the power feeding section.At the same time,it eliminates the situation where the measurement results are unreliable when the measurement quantity is extremely small,ensuring the accuracy of the range of action.

关 键 词：继电保护 阻抗特性 软件仿真 曲线拟合 AT供电 

分 类 号：U224.4[交通运输工程—道路与铁道工程]