A device for detecting the lowest point of arc sag of power lines

Abstract

The invention discloses an electric power line sag lowest point detection device which comprises a detection mounting base; a detection sleeve which is connected to one side of the detection mountingbase, is used for sleeving a power transmission line and can automatically walk; and an integrated control mechanism which is arranged in the detection mounting base; a sensing element is adopted to detect the pressure value of the power transmission line on the inner wall of the detection sleeve after the single walking process of the detection sleeve is finished; the walking times and the innerwall pressure value of the sleeve are detected through the integrated control mechanism; comparing of the change of the inner wall pressure value of the detection sleeve with the distribution rule ofthe inner wall pressure value is carried out to determine the lowest point position of the power transmission line, so that the influence on the lowest point position determination due to self inertiais avoided; and secondary correction is carried out on the determined lowest point position of the power transmission line according to the single walking times of the detection sleeve, and deviationgenerated in the primary positioning process is corrected, so that the positioning accuracy of the lowest point position and the precision of a subsequent sag value detection value are further improved.

Description

technical field [0001] The invention relates to the technical field of sag detection, in particular to a device for detecting the lowest point of sag of a power line. Background technique [0002] Sag refers to the vertical distance between the lowest point of the conductor and the two suspension points when the suspension height of the conductors on two adjacent base poles is the same on the flat ground; generally, when the transmission distance is long, due to Due to the weight of the wire, a slight sag will be formed, making the wire in the shape of a catenary. [0003] When detecting the sag of the wire between two adjacent base poles, the lowest point of the wire between the two base poles must be detected first. When the difference in the height of the suspension point of the wire does not exceed 10%, the general wire's The lowest point is located at the midpoint of the wire. At this time, it is necessary to locate the exact position of the lowest point of the wire an...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a detection device for the lowest point of sag of a power line, which solves the problem of detection due to the inertia of the existing sag detection device when the detection device itself slides freely on the wire to locate the lowest point of the wire. The device shakes back and forth at the lowest point of the wire and cannot accurately locate the lowest point, resulting in a large deviation in the positioning of the lowest point that affects the accurate detection of the sag value

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