METHOD FOR DETECTING FAULTS OF UNDERGROUND TRANSMISSION LINE AND APPARATUS THEREOF

摘要

The present invention relates to a method and a device for detecting a fault location of an underground transmission line, comprising: detecting a polarity of a current from a current transformer installed in a neutral line of a transmission and distribution line; Storing the polarity of the current sensed by the current transformer in a memory unit; Determining whether the polarity of the current sensed by the current transformer is the same as the polarity of the current stored in the memory unit and generating fault occurrence information when the current is different; Transmitting the generated failure occurrence information to an upper detection device or a substation terminal; Recognizing and indicating a fault location in the substation terminal; Including the step of operating the blower fan of the power outlet entrance in the substation terminal to be able to quickly detect and retrieve the fault location of the underground power outlet in real time.;Power outlets, substations, PLC modems, transmission and distribution lines, light lines