摘要
提出了利用行波对带有分支的配电网故障线路进行准确定位的方法。该方法是一种分两步来确定故障点的定位方法:首先对故障产生的暂态行波进行检测,通过 识别来自故障点和不连续点的反射波来确定故障区段;在确定了故障区段的基础上,找到与故障点相关的2个反射波,并由这2个波的最大相关时间计算得到故障点到检测端的距离。文中介绍了该算法的理论研究工作,给出了EMTP仿真的仿真结果,最后通过对一条带分支的单相线路进行试验,进一步证明了该方法的正确性。
Scheme is presented for accurate fault location on a distribution line with branches using travelling wave signal. The new fault location scheme here has two steps. First the fault section is made sure by identifying several special reflections from discontinuities in a fault-generated transient wave. On the base of the fault section known, the second step is to determine the fault point according to the most mutuality time of two special reflections. The paper shows the theoretical development of the algorithm, and together with the results obtained using EMTP simulation. The tests using a single line with branches have proved the method.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2004年第9期37-43,共7页
Proceedings of the CSEE
基金
国家自然科学基金项目(50177007)
国家重点学科建设项目(BD0201)~~
关键词
配电网
故障定位
行波理论
电力工程
电力系统
配电线路
Electric power engineering
Distribution lines
Fault location
Travelling wave signal
Wavelet packets
