Overhead power transmission line wire jumper hooking cable clamp semi-automatic replacement method

Abstract

The invention discloses an overhead power transmission line wire jumper hooking cable clamp semi-automatic replacement method and provides an overhead power transmission line wire jumper hooking cableclamp semi-automatic replacement tool. The tool includes a hooking cable clamp elastic fixing device, a hooking cable clamp cover plate spring fixture, a remote electric operation wrench and a magnetic sleeve. The hooking cable clamp elastic fixing device and the hooking cable clamp cover plate spring fixture are utilized to place a hooking cable clamp onto a wire, and then the magnetic sleeve and the electric wrench are utilized for tightening. The replacement method is highly integrated in operation procedures, semi-automation is achieved on the basis of simple manual operation, the operation is simple and convenient, and a traditional operation method in which staff need to directly touch wire jumpers after the electric potential is equal or the electricity is cut off is changed; the operation efficiency and safety are greatly improved, and the development of lived operation is boosted.

Description

technical field [0001] The invention relates to a method for replacing parallel hooking wires, in particular to a semi-automatic replacement method for overhead power transmission line jumper parallel hooking wire clips. Background technique [0002] Overhead high-voltage transmission lines are an important part of the power grid. At present, 220kV transmission lines generally use double-split conductors, and the electrical connection of the tension-resistant towers generally adopts double jumpers. The double jumpers use hook clips to fix the two jumpers to prevent Whip each other or swing greatly, and at the same time, some 110kV line jumpers are used for passing the remaining material of the wires and hooking the clips and connecting them. However, as the line is affected by natural environments such as wind, rain, oxidation, etc. during operation, defects such as loosening of the clamp bolts or serious oxidation or even fracture and damage often occur, resulting in heat, ...

AI Technical Summary

Problems solved by technology

However, as the line is affected by natural environments such as wind, rain, oxidation, etc. during operation, defects such as loosening of the clamp bolts or serious oxidation or even fracture and damage often occur, resulting in heat, whipping, damage, and serious Serious accidents that can even lead to jumper breaks

[0003] Take the 220kV line as an example (the distance of the 110kV line is even narrower): Since the distance between the cross-arms of the tension pole tower is generally about 3 meters, and the sag of the jumper is generally about 2.2 meters, this will cause people to directly enter it for equipotential work. , deducting the space occupied by the human body, the combined gap between it and the live jumper and the cross-arm of the tower cannot meet the 2.1 meters, or the safety distance requirement of 1.8 meters cannot be met with the ground potential body such as the cross-arm of the tower when the jumper is overhauled, so For the replacement of the jumper and the hook clip, the method of power-off maintenance is generally adopted.

This is not conducive to the stability of the power grid, and secondly, it will cause a huge loss of power supply

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