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Replacement method of long-distance multi-split wire

A replacement method and multi-split technology, which is applied in the direction of overhead lines/cable equipment, etc., can solve the problems of inconvenient replacement of multi-split conductors, high labor intensity, and low construction efficiency, so as to save manpower and tool investment and reduce labor intensity , Improve the effect of replacement efficiency

Active Publication Date: 2017-10-10
STATE GRID FUJIAN ELECTRIC POWER CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has high labor intensity, high manpower input, and low construction efficiency, which brings inconvenience to the replacement of multi-split conductors.

Method used

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  • Replacement method of long-distance multi-split wire
  • Replacement method of long-distance multi-split wire
  • Replacement method of long-distance multi-split wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] Best practice:

[0043] The present invention takes the example of replacing 400 old wires with four splits with 800 new wires, and proposes a long-distance multi-split wire replacement method, which is applicable to the multi-split wire replacement operation within 5km, and the operation flow is shown in the figure. The method includes steps such as construction preparation, removal of old wire attachments, suspension of the pay-off tackle and moving in of the old wire, layout of the stretching field for the old wire, recovery of the old wire, deployment of the new wire, and crimping. The specific implementation methods are as follows:

[0044] 3.1 Construction preparation

[0045] 3.1.1 Configuration of main tools

[0046] The main tensioning equipment and supporting tools are selected as follows:

[0047] (1) Calculate the braking tension and reverse pulling force of the tension machine when the old wire is recovered, and the tension of the braking tension machine an...

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Abstract

The invention relates to a replacement method of a multi-split wire in an ultrahigh-voltage power transmission line, in particular to a replacement method of a long-distance multi-split wire. A four-split waste wire and a traction rope of a new wire are directly connected by a specially-designed four-in-one pay-off plate, two large-size dual-wheel tension machines are used as traction equipment to reversely pull the waste wire, a large-size tension machine is used as tension equipment to brake the traction rope, so that one-time recycling of the long-distance four-split waste wire and synchronous forwarding of the traction rope of the new wire are achieved, and the four-split new wire is synchronously unfolded by a one-in-four mode. By the replacement method, labor and tool input are greatly reduced, the labor intensity is reduced, the construction period is shortened, and the replacement efficiency of the long-distance four-split wire is substantially improved.

Description

technical field [0001] The invention relates to a method for replacing multi-split conductors in ultra-high voltage transmission lines, in particular to a method for replacing long-distance multi-split conductors. Background technique [0002] Multi-split wire is a wire erection method used to suppress corona discharge and reduce line reactance, and has been widely used in ultra-high voltage transmission lines. However, with the rapid development of social economy, the power consumption capacity is increasing day by day, and the incompatibility of the multi-split conductors erected in the early stage is insufficient, such as insufficient transmission capacity and aging performance, so it needs to be replaced. [0003] The existing long-distance multi-split wire replacement method generally adopts the method of "recovering the old wire in sections first, and then deploying the new wire in the whole section", that is: first remove the old wire accessories, and then loosen the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G1/02
CPCH02G1/02
Inventor 陈玮雨罗玉镇
Owner STATE GRID FUJIAN ELECTRIC POWER CO LTD
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