基于横联线电流比原理的全并联AT牵引网故障测距装置  

Fault locator of all-paralleling AT traction power supply based on the theory of the current ratio of paralleling lines

作　　者：郭明杰[1] 林国松[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：《继电器》2006年第22期36-39,48,共5页Relay

摘　　要：全并联AT(Auto-transform er)供电牵引网发生故障后,能够快速准确判断出故障类型,标定故障点位置对确保电气化铁路安全可靠运行是至关重要的。通过分析全并联AT(Auto-transform er)供电牵引网各种故障线路满足的电量方程,得到故障测距用横联线电流比原理。以典型的全并联AT供电方案为例,详细讨论了由工程实际中能测量到的电气量计算出测距公式中所需物理量的方法,提出了装置起动及数据同步原理,给出了故障测距的系统实现方案,基本上解决了各种故障类型的判断,故障点标定问题。After faults of all - paralleling AT traction power supply system occur, that the type of fault can be judged and the place of fault can be located quickly and exactly is important for ensuring safety, reliability to the traction power supply. By analyzing the electric equations on the condition of various fault of all - paralleling AT traction power supply systems, and then the theory of the current ratio of paralleling lines is obtained for fault locating. As an example, the typical all - paralleling AT traction power supply concept is mentioned. Based on concept, the method of necessary data acquisition by that value measured easily in meter is detailed, and the thepry of starting device and data synchronization is presented. At last, judgement of fault type and location of fault can be basically solved.

关 键 词：横联线电流比 全并联AT供电 电流分布 故障测距 自启动 数据同步 

分 类 号：TM762.25[电气工程—电力系统及自动化] TM77