含分布式电源的配电网故障区间定位算法  

Fault Region Location Algorithm for Distribution Network Containing Distributed Generation

作　　者：王进强[1] 陈少华[1] 尹雁和[1] 习思敏[1] 

机构地区：[1]广东工业大学自动化学院,广东广州510006

出　　处：《电力科学与工程》2011年第2期25-29,共5页Electric Power Science and Engineering

摘　　要：含分布式电源(DG)的配电网络结构由单电源辐射型网络发展成复杂的多电源网络,潮流的方向随机变化,已有的故障定位方法将不能适应新的配电系统。根据DG接入配电网后,能通过与多分支母线节点关联的FTU监测点的电流方向和幅值大小判断故障方向的特点,提出一种故障定位的方法,首先判断FTU监测点的电流方向和正方向监测点的电流幅值,将故障锁定在两个多分支母线节点之间,然后根据FTU反馈的故障过电流信息确定故障发生的具体区域。该算法原理简单,判断准确,在已有的配电网结构上易于实现。The distribution network structure containing distributed generation（DG） have changed into complex multi-power network from single power radial network,and difficult to determine the direction of power,so that the existing fault location methods would not adapt to the new distribution.Based on the direction and amplitude of fault current could determine fault direction when DGs joined into distribution network,which flowed through FTU monitoring points that associated with multi-branch bus node,a new fault location method is proposed.Firstly,in view of the current direction of FTU monitoring points and current amplitude of positive direction of FTU monitoring points,this method could lock fault region among multi-branch bus node.Then,the fault specific region could be fixed on the base of the information of fault over-current fed back by FTU.The principle of this algorithm is simple,which not only judge accurately,but also implement in the existing distribution network easily.

关 键 词：分布式电源 配电网 故障定位 矩阵算法 

分 类 号：TM711[电气工程—电力系统及自动化]