基于数学形态学的铁路电力线路故障诊断方法

New Way of Fault Diagnosis in Railway Power Transmission Line based on Mathematics Morphologic

针对铁路电力线路的特殊电气结构以及故障诊断要求,提出了从线路两端采集故障时产生的电压行波信号,用数学形态学滤波器进行滤波,用形态学梯度技术查找波形的奇异值点,再用改进的双端定位公式计算,从而得到故障所发生的精确区段的新方法。实现了故障的快速隔离,快速恢复供电。

Relative to the special electric structure of the railway power transmission line and the requirement of the fault diagnosis, this paper presents a new way. First the voltage traveling signal from two ends of the line was gathered when it is fault, then the signal by the way of mathematics morphologic filter was processed, at the same time Morphological Gradient technology was snatched to looking for the singularity of the signal. Finally the exact section where the fault located was calculated. Using this new way, severance of the fault fleetly and renewal of power supplying can come into being.