基尔霍夫电流定律在故障分析中的应用  

作　　者：蔡默雯 李卫民[1] 

机构地区：[1]大秦铁路股份有限公司侯马北供电段

出　　处：《电气化铁道》2020年第S02期254-257,共4页Electric Railway

摘　　要：随着我国铁路营业里程逐年攀升,复杂的地质及气候条件、不同型号列车运行下的不同工况等都为铁路供电带来了严峻挑战。本文以所内馈线电流互感器T-F线接反、分区所数据丢失、T-F线短路、F-R线短路4种情况,论证运用基尔霍夫电流定律计算故障数据的必要性,以及运用AT供电方式下变电所馈线电流和等于AT所中性点吸上电流和来计算故障数据存在较大局限性,以期为设备运维、故障测距装置升级完善带来启示。As China's high-speed rail mileage in operation increases year by year,all the complex geological and climatic conditions,and different operating conditions of different types of trains pose serious challenges to railway power supply.This article,taking the four conditions of the reverse connection of the T-F line of the feeder current transformer,the loss of data in the sectioning post,the short circuit of the T-F line as the examples,illustrates the necessity for application of Kirchhoff's law to calculate the fault data as well as the limitations in the calculation of fault data by using the sum of the feeder current of the substation and the sum of the current absorbed from the neutral point of the at substation under at power supply mode,so as to provide reference for equipment operation and maintenance,fault location device upgrading and improvement.

关 键 词：基尔霍夫电流定律 AT供电 故障测距 

分 类 号：U226.5[交通运输工程—道路与铁道工程]