电力系统自动化2012，Vol.36Issue(19)：73-77,104,6.
基于频域参数识别的距离保护算法
Distance Protection Algorithm Based on Parameter Identification in Frequency Domain
摘要
Abstract
Based on least square matrix pencil algorithm,a novel distance protection algorithm in frequency domain for single-phase-to-earth fault of transmission line is proposed,which can accurately calculate the fault distance when faults happen at the remote terminal,and get a positive fault distance error when faults happen around the remote terminal.Assuming that the impedance of zero phase sequence loop after the fault point is pure inductive,a linear distance measure equation with three unknown coefficients is deduced.Simulation results with electromagnetic transient program(EMTP) show that for concentrate parameter model of short-distance transmission lines,this algorithm can measure distance accurately when faults happen at the remote terminal.It can effectively prevent the overreach phenomenon when faults happen around the remote terminal through transient resistance.关键词
距离保护/矩阵束/单相接地故障/参数识别Key words
distance protection/matrix pencil/single-phase-to-earth fault/parameter identification分类
信息技术与安全科学引用本文复制引用
索南加乐,钟应,王增超,王莉,王晨清..基于频域参数识别的距离保护算法[J].电力系统自动化,2012,36(19):73-77,104,6.基金项目
国家自然科学基金重点项目 （）
国家重点基础研究发展计划（973计划）资助项目 （）
