Cable hunting method and device based on Faraday's electromagnetic induction law

Abstract

The invention relates to the field of the power, and especially relates to a cable hunting method and device based on Faraday's electromagnetic induction law. The method comprises the following steps:producing induction current different from the original current frequency on a to-be-hunted cable; respectively measuring the induction current produced on the to-be-hunted cable and the induction current on each output cable; and judging that the output cable and the to-be-hunted cable is the same cable if the difference between the induction current produced on one output cable and the induction current on the to-be-hunted cable is less than a threshold., The following effects can be realized by using the method disclosed by the invention: the same cable can be found by measuring the induction current with close size in the output cable through a measurement module as long as the induction current is produced on a shielding layer ground line through an open-closes current transformer, and the hunting is convenient and fast.

Description

technical field [0001] The invention relates to the field of electric power, in particular to a method and a device for finding cables based on Faraday's law of electromagnetic induction. Background technique [0002] With the continuous expansion of power demand, as a substation that plays an important role in the power system network, it is responsible for the expansion of substation capacity, technology upgrade and defect elimination every year. In a large number of work processes such as the commissioning of new substations, the renovation of old substations, and the elimination of substation equipment defects, mastering the actual direction of cables in substations is the basis for ensuring safe and smooth maintenance work. [0003] Cables generally have a tag to identify where the cable is going. However, due to long-term operation in the substation, the cable tag is missing, the cable tag is oily, and the cable tag is difficult to remove. In this case, the cable spar...

AI Technical Summary

Problems solved by technology

However, in the process of line hunting, the work of removing the spare core will be involved, resulting in the risk of accidentally touching the running cable. Even if there is no spare core, this method cannot be used, which limits the applicability

However, using the method of manually searching for wires requires a lot of manpower to go through the entire cable channel, pulling, searching, and confirming section by section. security risks

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