A permanent repair method for broken strands of optical fiber composite overhead ground wire

A composite technology of overhead ground wire and optical fiber, applied in the direction of overhead line/cable equipment, etc., can solve problems affecting optical fiber communication, achieve the effects of saving investment, eliminating hidden dangers in operation, and ensuring safety and reliability

Active Publication Date: 2018-09-14
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, due to the differences in the nature and surrounding environment of OPGW, the nature of accidents, and the specifications of OPGW itself, the failure phenomena of OPGW are different. For minor failures, 1 to 2 strands are broken, and for major failures, the entire OPGW root is shut down. Burning out, affecting optical fiber communication

Method used

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  • A permanent repair method for broken strands of optical fiber composite overhead ground wire
  • A permanent repair method for broken strands of optical fiber composite overhead ground wire
  • A permanent repair method for broken strands of optical fiber composite overhead ground wire

Examples

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Embodiment 1

[0050] Such as figure 1 As shown, the invention of this example

[0051] (1) The outer layer is an aluminum alloy single wire OPGW broken strand repair method

[0052] The typical structure of OPGW (OPGW-24B1-145[87.3; 178]) whose outer layer is an aluminum alloy single wire is used as an example to analyze the research on the threshold of broken strand repair. The bearing area and strength analysis of broken strands are shown in Table 1.

[0053] Table 1 Analysis of bearing area and strength of broken strands of OPGW-24B1-145[87.3; 178]

[0054]

[0055]

[0056] According to the analysis in Table 1, the OPGW broken strand repair plan with the outer layer of aluminum alloy single wire is as follows: if the outer layer is broken 1-2 strands, it can be repaired with aluminum-clad steel repair strips; if the number of outer layer broken strands is greater than 2 strands, it is recommended to temporarily Replace OPGW after patching.

[0057] (2) The outer layer is 40% c...

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Abstract

The invention discloses a permanent restoration method for a broken strand of an optical fiber composite overhead ground wire, comprising steps of determining the type of the outer layer material of the optical fiber composite overhead ground wire, performing mending on the optical composite overhead ground wire through the external layer material type and the broken strand quantity of the external layer of the optical fiber composite overhead ground wire, wherein the mending comprises mending through an aluminum-coated steel mending strip or replacement of the optical fiber composite overhead ground wire after the aluminum-coated steel mending strip performs temporary mending and the circuit is blacked out. The method of the invention utilizes a pre-stranded mending strip and adopts the different mending methods according to the OPGWs of different conductivities on the external layer, which enables the mended OPGW to satisfy the mechanical performance, the electric performance and light transmission performance, and guarantees the safety reliability of the mended OPGW. The technical scheme of the invention eliminates the fault and the operation hidden dangers with the minimum investment and time and the most reliable method, and has an important meaning to the reliability of guaranteeing the power grid power supply and information transmission.

Description

Technical field: [0001] The invention relates to a method for repairing an optical fiber composite overhead ground wire, and more particularly relates to a method for permanently repairing broken strands of an optical fiber composite overhead ground wire. Background technique: [0002] Optical fiber composite overhead ground wire (OPGW) is a ground wire with a new structure for high-voltage transmission system communication lines. It has the dual functions of ordinary overhead ground wire and communication optical cable. It is an important development direction of electric power special optical cables. Wide range of applications. [0003] As an overhead ground wire, OPGW is mainly used to withstand lightning strikes and protect the phase line. In addition to its own defects and mechanical damage during transportation and installation, lightning strikes and broken strands are one of the main causes of OPGW damage, especially for areas with heavy lightning strikes. The phenom...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G1/02
Inventor 戚力彦冯学斌
Owner STATE GRID CORP OF CHINA
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