TRAVELING WAVE RANGING METHOD AND APPARATUS USING HOMOLOGOUS DOUBLE-SAMPLING MODE, AND STORAGE MEDIUM

摘要

A traveling wave ranging method and apparatus using a homologous double-sampling mode, wherein same relates to the technical field of relay protection of power systems. The traveling wave ranging method using a homologous double-sampling mode comprises respectively obtaining first sampled data and second sampled data by means of using two modes to sample homologous traveling wave data, wherein the magnification factor of the first sampled data is smaller than the magnification factor of the second sampled data, and selecting appropriate data according to the magnitude of a mutation quantity value in order to search for the header of a traveling wave; and when the mutation quantity value is large, selecting the first sampled data with the smaller magnification factor to search for the header, thereby reducing incorrect judgment of the traveling wave, and when the mutation quantity value is small, selecting the second sampled data with the larger magnification factor to search for the header, thereby reducing misjudgment of the traveling wave and improving the identification capacity and accuracy of ranging.