基于网络的故障行波定位算法基于网络的故障行波定位算法.pdf

第 28 卷 第 31 期 中 国 电 机 工 程 学 报 Vol.28 No.31 Nov. 5, 2008 48 2008 年 11 月 5 日 Proceedings of the CSEE ?2008 Chin.Soc.for Elec.Eng. 文章编号：0258-8013 (2008) 31-0048-06 中图分类号：TM 77 文献标志码：A 学科分类号：470?40 基于网络的故障行波定位算法 曾祥君，陈楠，李泽文，邓丰 (长沙理工大学电气与信息工程学院，湖南省 长沙市 410076) Network-based Algorithm for Fault Location With Traveling Wave ZENG Xiang-jun, CHEN Nan, LI Ze-wen, DENG Feng (School of Electrical Information Engineering, Changsha University of Science and Technology, Changsha 410076, Hunan Province, China) ABSTRACT: In order to solve the problem of location failure 短路径，在线计算故障点位置；为每个变电站设置权重，对 on the traditional both-terminal traveling waves based power 所有不同路径的计算结果加权求和，得到故障点的精确位 line fault location caused by any fault in locating equipment, 置。EMTP 仿真分析和现场运行结果表明，该定位算法误差 startup failure and time record error, a network-based fault 小于 150 m，可靠性高、鲁棒性强，较好地满足了电网运行 location algorithm with traveling wave is developed, and the 要求。 fault position is calculated by using the traveling wave arrival 关键词：电网；故障定位；行波；网络算法；最短路径 time to every substation of the power grid and the shortest routes of the traveling wave transmission. Firstly, the power 0 引言 grid shortest routes matrix is calculated by the Floyd 基于故障暂态分量的行波定位受 CT 饱和、故 algorithm，and the first-traveling wave arrival time to every 障电阻及系统运行方式影响小，定位精度高，一直 substation is sought. Then the shortest routes that do not pass