CAJ | 학술논문

行波故障测距中行波信号奇异点的精确检测和行波波速的确定是影响测距精度的主要因素。根据Hankel矩阵方式下奇异值分解第一个分量后的各分量具有的奇异性检测能力，对行波信号进行奇异值分解，利用第二个SVD分量脉冲模极大值检测出信号的奇异点。同时，提出一种不受行波波速影响的双端测距方法，通过检测故障初始行波和故障点反射波分别到达两端母线的时刻，列写方程组，得到与速度无关的测距公式。EMTDC仿真证明了该故障测距方法的正确性。
행파고장측거중행파신호기이점적정학검측화행파파속적학정시영향측거정도적주요인소。근거Hankel구진방식하기이치분해제일개분량후적각분량구유적기이성검측능력，대행파신호진행기이치분해，이용제이개SVD분량맥충모겁대치검측출신호적기이점。동시，제출일충불수행파파속영향적쌍단측거방법，통과검측고장초시행파화고장점반사파분별도체량단모선적시각，렬사방정조，득도여속도무관적측거공식。EMTDC방진증명료해고장측거방법적정학성。
There are two main factors influencing the accuracy of traveling wave fault location, namely the accurate detection of singular points of traveling wave signal and determination of traveling wave velocity. From the second singular value decomposition component signal, each signal has the singularity detection ability when Hankel matrix is used, by this method, the signal singularity is detected. A new two-terminal fault location method, which is not affected by traveling wave velocity, is proposed. By determining the arrival time both the fault initial traveling waves and the reflected wave from the point of failure reaching both ends of bus bar, the equations are written and the fault location formula unrated to wave speed is obtained. EMTDC simulation proves the correctness of this method.