Earth network grounding resistance electrode breakpoint intelligent detection device and method

Abstract

The invention relates to the technical field of power systems, in particular to an intelligent detection device and method for an earth network grounding resistance electrode breakpoint. Acquiring loop resistance detection data of the current electrode and the voltage electrode, and performing electrode state judgment on the loop resistance data; the preset high-frequency signal source module outputs a high-frequency signal to the lead when detecting that the electrode lead is broken; and carrying out breakpoint position detection according to an output signal of the handheld breakpoint detector. A broken line detection module applies direct current reference voltage to a loop formed by a lead, an electrode and a ground net through a divider resistor, loop resistance is obtained through measurement and calculation, and then the states of the ground resistance electrode and the lead are judged. A grading criterion matrix is adopted for loop state judgment, and a handheld breakpoint detector is matched with a dichotomy for breakpoint positioning, so that the breakpoint detection efficiency is improved. Intelligent detection of the electrode lead breakpoint in the earth network grounding resistance measuring process is achieved, and the method has the advantages of being high in detection speed, accurate in positioning, safe and reliable in operation and the like.

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