基于铁路供电系统中牵引变电所保护研究  

Research on protection of traction substation based on railway power supply system

作　　者：王茹玉[1] 张治国[1] 史梦欣 WANG Ruyu;ZHANG Zhiguo;SHI Mengxin(Xi’an Traffic Engineering Institute,Xi’an 710300,China)

机构地区：[1]西安交通工程学院,西安710300

出　　处：《自动化与仪器仪表》2020年第8期142-145,共4页Automation & Instrumentation

基　　金：陕西省高等教育学会:马斯洛层次需要理论对高等教育人才培养的影响及应用研究(No.XGH17248)。

摘　　要：传统的牵引变电所保护方法无法切除故障,对设备无法起到很好的保护作用。为此,提出基于铁路供电系统中牵引变电所保护研究。先分析牵引变电所线路故障,再应用相分量法短路故障模型,整定计算Ⅰ段,Ⅱ段,Ⅲ段保护距离。完成上述步骤后,设计4种辅助后备保护,实现对牵引变电所的保护。由此,完成基于铁路供电系统中牵引变电所保护方法的设计。在实验中,选用2台200 kV/37.5 kV单行变压器,其中一台正常使用,另外一台的变压器参数与前一台保持一致。对比实验表明,所提方法的过热保护可以迅速切除故障,对设备起到了很好的保护作用。The traditional protection method of traction substation can not remove the fault,which plays a very good role in the protection of equipment.Therefore,the protection research of traction substation based on railway power supply system is proposed.Firstly,the line fault of traction substation is analyzed,and then apply the phase component method short-circuit fault model to set and calculate the I,II,and III protection distances.After completing the above steps,four kinds of auxiliary backup protections are designed to protect the traction substation.Consequently,the design of traction substation protection method based on railway power supply system is completed.In the experiment,two 200/37.5 single-phase transformers are selected,one is in normal use,and the parameters and load of the other transformer are the same as that of the previous one.The comparative experimental results show that the overheat protection of the proposed method can quickly remove the fault and play a very good role in protecting the equipment.

关 键 词：供电系统 牵引变电所 整定计算 继电器 电流速断保护 过热保护 

分 类 号：TP765[自动化与计算机技术—检测技术与自动化装置]