Method and system for automatically studying and judging faults of power transmission line

The invention discloses a power transmission line fault automatic studying and judging method and system. The method comprises the steps that power transmission line fault records and corresponding transient traveling wave records are collected to serve as a specimen library, and a fault cause-transient traveling wave standard library is formed; carrying out filtering processing on the standard library traveling wave and the test sample traveling wave; setting classification model parameters; calculating the dynamic time warping distance between the test sample traveling wave and the standard library traveling wave one by one; and according to the standard library traveling waves of the first k minimum dynamic time warping distances, determining a fault type corresponding to the traveling waves of the test sample. According to the invention, fault research and judgment are carried out based on the correlation between the waveform and the fault reason instead of causality, and compared with fault research and