一种配电网单相接地故障行波定位方法  

Traveling-wave location for the single phase grounding fault of distribution network

作　　者：贾惠彬[1] 钱翰博[2] 戚宇林[1] 

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071003 [2]国家国防科技工业局协作配套中心,北京100081

出　　处：《电力系统保护与控制》2012年第23期93-97,共5页Power System Protection and Control

基　　金：中央高校基本科研业务费专项基金(10QG07)

摘　　要：我国中低压配电网多为树形结构,分支多,进行精确的故障定位困难。针对配电网的树形结构,提出了一种多端行波故障定位方法。该方法中,每个配电变压器安装一个行波接收装置,利用GPS获取行波第一波头到达各配电变压器的时间信息,将这些时间信息传输到故障管理中心,选取时间最短的三个变压器首先确定故障区域,然后排除伪故障点进而确定故障位置。最后,采用ATP软件对该方法进行了仿真分析,分析结果表明了该方法的可行性。Most of the medium-low voltage distribution networks are of tree structure with many branches, so it is very difficult to locate faults accurately. The method based on multi-terminal traveling wave is proposed. In the method, every transformer is equipped with the device which can identify traveling wave. When fault occurs, the message of time that the first head of traveling wave arrives at every transformation is sent to the management center of fault. In the management center, the three shortest moments are chosen to identify the area of fault, and then wrong fault location is excluded. Finally, the method is simulated by ATP software, which demonstrates its feasibility.

关 键 词：行波定位 单相接地故障 配电网 

分 类 号：TM863[电气工程—高电压与绝缘技术]