输电线路不对称故障点定位的新方法  

NEW LOCATION METHOD OF UNBALANCED FAULTSON TRANSMISSION LINES

作　　者：韦钢[1] 唐斌 肖鸿杰[1] 

机构地区：[1]上海电力学院,上海200090 [2]江西九江电厂,江西九江332000

出　　处：《电力系统自动化》2001年第17期29-31,59,共4页Automation of Electric Power Systems

摘　　要：基于电力系统不对称故障时负序等值电路的特点进行分析计算以确定输电线路不对称故障点 ,原理上与不对称故障的形式无关 ,方法简单、适用性强。以 T形接线的线路为例进行计算机离线仿真计算 ,结果表明该算法测距精度高 。Based on the characteristic of negative-sequence equivalent electric circuit under the unbalanced faults of power system, the unbalanced fault on transmission line can be located. The theory has no relation with the forms of unbalanced faults. It is easy and of high adaptability. Computer based off-line simulation of the T-connected transmission line indicates that the fault location isaccurate by the proposed method, and it is less influenced by transition resistance and system parameters.

关 键 词：输电线路 不对称故障 负序分量 定位 电力系统 

分 类 号：TM755[电气工程—电力系统及自动化]