基于多端行波信息的配电网故障定位改进矩阵算法  

Improved Matrix Algorithm for Fault Location in Distribution Network Based on Multi-terminal Traveling Wave Information

作　　者：张文轩 李京[1,2] 王雪菲 ZHANG Wen-xuan;LI Jing;WANG Xue-fei(College of Klectrical and Electronic Kngineering,Shandong University of Technology,Zibo 255049,China;Shandong Branch of Power Automation by share Ltd.,Zibo 255019,China)

机构地区：[1]山东理工大学电气与电子工程学院,山东淄博255049 [2]山东科汇电力自动化股份有限公司,山东淄博255049

出　　处：《水电能源科学》2021年第6期194-197,170,共5页Water Resources and Power

摘　　要：针对配电网故障定位传统矩阵算法经济性、容错性、适用性方面的不足,提出一种基于多端行波信息的故障定位改进矩阵算法。该算法基于主干线两端与分支线终端高频率采样获得的行波信息,构建故障距离矩阵,根据矩阵性质界定故障区间,进而精确定位故障位置。考虑到故障信息畸变,对应不同情况对故障距离矩阵进行修正,并作降维处理形成误差矩阵,提高了定位准确性。通过PSCAD、Matlab软件建模仿真,验证了所提算法的可靠性及精度。Aiming at the disadvantages of traditional matrix algorithm for fault location in distribution network in terms of economy,fault tolerance and applicability,an improved matrix algorithm for fault location based on multi-terminal traveling wave information is proposed.The algorithm builds a fault distance matrix based on the traveling wave information obtained by high sampling at both ends of the main trunk line and the branch line terminal,defines the fault interval according to the nature of the matrix,and accurately locates the fault location.Taking into account the distortion of the fault information,the fault distance matrix is corrected corresponding to different situations,and the dimensionality reduction is performed to form an error matrix,which improves the positioning accuracy.Through PSCAD and Matlab software modeling and simulation,the reliability and accuracy of the proposed algorithm are verified.

关 键 词：配电网 故障定位 行波 矩阵算法 

分 类 号：TM773[电气工程—电力系统及自动化]