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Overhead bare conductor expanding and reinforced insulation structure

A technology for enhancing insulation and wires, applied in the direction of insulated conductors, insulated cables, conductors, etc., to reduce the critical corona distance, reduce the risk of corona discharge, and eliminate the effect of surface corona

Inactive Publication Date: 2014-08-06
STATE GRID CORP OF CHINA +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application of this kind of reinforced insulation structure has not yet appeared in our country, so our country urgently needs to develop a new type of expanded diameter reinforced insulation structure with independent intellectual property rights.

Method used

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  • Overhead bare conductor expanding and reinforced insulation structure
  • Overhead bare conductor expanding and reinforced insulation structure
  • Overhead bare conductor expanding and reinforced insulation structure

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Such as figure 1 , figure 2 with Image 6 As shown, in this embodiment, a diameter-enlarged reinforced insulation structure for overhead bare wires includes an upper diameter-expanding part 1, a lower diameter-expanding part 2, and an elastic buckle 3 connecting the upper diameter-expanding part 1 and the lower diameter-expanding part 2. The upper diameter expansion part 1 and the lower diameter expansion part 2 have the same structure, and are symmetrically clamped on the upper surface and the lower surface of the overhead bare wire where reinforced insulation is required, and can be installed on the high-voltage bare wire 5 without disassembling the high-voltage bare wire 5. 5 surface to increase its effective radius to achieve the effect of shielding corona, and the reinforced insulation structure of the present invention is connected to the required length as required, which is convenient for construction and can be replaced. The outer surfaces of the upper diame...

Embodiment 2

[0033] Such as image 3 with Figure 4 As shown, this embodiment is a kind of reinforced insulation structure for overhead bare wire diameter expansion. structure, or the upper diameter-expanding part 1 and the lower diameter-expanding part 2 are semi-cylindrical. When this structure is used, such as Figure 4 The upper diameter-expanding part 1 and the lower diameter-expanding part 2 shown can be connected in series according to the needs, but the two ends after the series connection must be connected in series as follows: image 3 The upper diameter-expanding part 1 and the lower diameter-expanding part 2 of the shown structure, and one end of the hemispherical structure should be placed at the outermost end.

Embodiment 3

[0035] Such as Figure 5 As shown, the present embodiment is a diameter-enlarged reinforced insulation structure for overhead bare wires. Other structures are the same as those in Embodiment 1, except that the upper diameter-expanding part 1 and the lower diameter-expanding part 2 are hemispherical. When in use, more than one can be connected in series as needed.

[0036] As a preferred embodiment of the present invention, the material of the upper diameter-expanding part 1 and the lower diameter-expanding part 2 is aluminum alloy.

[0037] As a preferred embodiment of the present invention, the elastic buckle 3 is made of copper.

[0038] As a preferred embodiment of the present invention, the wall thickness of the inner hollow structure of the upper diameter-expanding part 1 and the lower diameter-expanding part 2 is less than 5 mm.

[0039] As a preferred embodiment of the present invention, the thickness of the modified epoxy insulating layer 4 is 0.5-1 mm.

[0040]The ...

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Abstract

An overhead bare conductor expanding and reinforced insulation structure comprises an upper expanding component, a lower expanding component and an elastic buckle for connecting the upper expanding component and the lower expanding component, wherein the upper expanding component and the lower expanding component are the same in structure and are clamped on the surface of the positions, needing to be protected, of an overhead bare conductor in a longitudinal symmetry mode; the outer surface of the upper expanding component and the outer surface of the lower expanding component are coated with modified epoxy insulation layers. The expanded conductor is of a hollow structure. The structure shields the single-line curvature and burrs on the surface of the overhead bare conductor, the equivalent radius of the smooth and large conductor is obtained, the corona on the surface of the bare conductor is thoroughly eliminated, and the safety distance is greatly reduced. The almost permanent safety protection effect can be obtained due to the strategy of the expanded conductor and an external reinforced solid insulation layer.

Description

technical field [0001] The invention relates to the technical field of supplementary insulation of overhead bare wires, in particular to a diameter-expanding reinforced insulation structure of overhead bare wires. Background technique [0002] In recent years, with severe weather such as violent storms and the continuous deterioration of the power grid operating environment, high-voltage transmission lines have been subjected to lightning strikes, external force damage, bird damage, pollution flashover, foreign matter lapping (kite, aluminum foil plastic, etc.) The short-circuit and discharge faults of the power system caused by the frequent occurrence of high-voltage lines have to be repaired 2-3 times a year. , resulting in enormous economic losses. [0003] At present, the solution to this problem mainly focuses on the method of local supplementary insulation of high-voltage bare wires to improve the safe and stable operation of the system: (1) The composite insulation h...

Claims

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Application Information

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IPC IPC(8): H01B7/02H01B7/17
Inventor 郑晓泉沈海泓刘海峰金阳段志国魏明磊成鹏飞
Owner STATE GRID CORP OF CHINA
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