基于虚拟仪器的接触网故障测距装置  

Virtual instrument-based feeder fault locator

作　　者：赵丽平[1] 李群湛[1] 陈小川[1] 

机构地区：[1]西南交通大学电气工程学院,四川成都610031

出　　处：《电力自动化设备》2003年第4期53-55,共3页Electric Power Automation Equipment

基　　金：铁道部科技发展计划项目(99J32)

摘　　要：微机接触网故障测距装置能在电气化铁路接触网发生各种短路故障后自动进行故障诊断和故障点精确定位。介绍了利用故障电压和故障电流计算故障回路电抗值的电抗法故障点定位的原理。装置采用软件替代硬件,使用NI公司的虚拟仪器开发平台LabwindowsCVI和数据采集卡完成了系统功能。简单介绍了基于虚拟仪器的故障测距装置的软件设计。Feeder fault locator will carry out the automatic fault diagnosis and precise fault loca-ting after different short-circuits faults have occurred in electrified railway feeder.The theory of fault locating by calculating the reactance of feeder line with measured fault current and voltage is introduced.With the virtual instrument-based development platform Labwindows CVI and the data acquisition card by National Instrument Company,the system functions have implemented,substitu-ting the hardware by software.The software design of the equipment is introduced briefly.Fund project:Science and technology development plan of Railway Ministry(99J32).

关 键 词：虚拟仪器 接触网 故障测距装置 电气化铁道 输电线路 电抗法 

分 类 号：U225[交通运输工程—道路与铁道工程] TP212[自动化与计算机技术—检测技术与自动化装置]