一种基于关联矩阵的配电网在线行波故障定位方法

Traveling Wave Fault Online Location Method for Distribution Network Based on Incidence Matrix

配电网故障定位技术目前主要集中在分段定位以及基于离线的信号注入法精确定位阶段。提出1种基于关联矩阵的在线行波故障定位新方法,该方法基于线路分布式终端高采样行波数据,利用多端数据构建关联矩阵,通过关联矩阵的对称性及相关性确定故障区间并识别异常装置数据,在此基础上进一步完成了故障点精确定位,从而提高了配电网故障定位的可靠性及精度。

Existing distribution network fault location technology mainly focuses on partition localization and offline signal injection method based precise positioning, so the paper proposes a new online traveling wave fault location method based on incidence matrix. According to the high sampling data of the traveling wave at distributed line terminal, the method establishes the incidence matrix by using multi-terminal data, determining the fault section as well as identifying abnormal device data with the symmetry and correlation of the incidence matrix, based on which the precise location of fault point is realized so as to improve the reliability and accuracy of fault location in the distribution network.