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Vertically grounding down-leading method for center of composite material tower and tower thereof

A technology of composite materials and grounding down conductors, applied in the direction of connecting contact materials, spatial arrangement/configuration of cables, electrical components, etc., can solve the problem of affecting the lightning protection effect of composite material towers, affecting the anti-fouling of lines, and reducing the transmission corridor Width and other issues to achieve the effect of avoiding inconvenience, enhancing insulation strength, and simple structure

Inactive Publication Date: 2010-04-07
STATE GRID ELECTRIC POWER RES INST
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] Therefore, the application of composite material towers for transmission lines has the problem of grounding down (because the tower body of the all-steel tower is a metal conductor, the ground wire is naturally directly connected to the earth through the tower body, so there is no problem of grounding down). There are many different methods of grounding down. The grounding down method will directly affect the lightning protection effect of composite material towers, and also affect the antifouling of lines and reduce the width of transmission corridors. Therefore, the grounding down of composite material towers The method is the key technology and difficulty that needs to be solved first in its application

Method used

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  • Vertically grounding down-leading method for center of composite material tower and tower thereof
  • Vertically grounding down-leading method for center of composite material tower and tower thereof
  • Vertically grounding down-leading method for center of composite material tower and tower thereof

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Embodiment Construction

[0028] figure 1 , 2 , Mark description in 4: 1-ground wire crossarm, 2-ground downconductor, 3-ground downconductor insulation cladding, 4-composite material tower wall insulation layer, 5-composite insulator, 6-composite insulator Connecting and supporting parts, 7-tower body part of tower head, 8-tower body lower part, 9-ground wire, 10-upper phase wire, 11-middle phase wire, 12-lower phase wire, 13-flashover point, 14- Flashover point and grounding down conductor electrical connection parts.

[0029] The ground cross arm 1 in the present invention is made of metal material, and the ground down conductor 2 is drawn out from the center of the ground wire cross arm 1, and the ground down conductor 2 is vertically connected to the ground from the center of the composite material tower. Part 8 under the body is a steel pipe, and the grounding downconductor 2 can be directly connected to the steel pipe for grounding.

[0030] Since the tower body part 7 of the tower head of th...

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Abstract

The invention relates to a vertically grounding down-leading method for the center of a composite material tower and a tower thereof, wherein the ground wire cross arm is made from a metal material, a grounding downlead is led from the center of the ground wire cross arm, and the grounding downlead is vertically led down to be grounded from the right center of the composite material tower. If the lower half tower body is a steel tube, the grounding downlead can be directly connected with the steel tube to be grounded. The invention utilizes the insulating strength of the composite material tower wall, enhances the line insulating strength of lightening impulse resistance, avoids the short circuit of the grounding downlead and the composite material tower body and plays an insulation role of the composite material tower body. The grounding downlead is prevented from the damage by strong wind and other external forces owing to exposure outside because the grounding downlead is penetrated from the internal side of the tower; furthermore, the structure is simple, and easy to implement.

Description

technical field [0001] The invention relates to a method for vertically directing down the center of a composite material pole tower and the pole tower thereof, and belongs to the application field of power transmission technology in electric power systems. Background technique [0002] The tower is an important equipment of the transmission line, and the characteristics of the materials used directly affect the safety, economy and reliability of the line operation. Because steel has the advantages of high strength-to-weight ratio, easy processing and installation, most steel towers are currently used at home and abroad. However, the all-steel tower also has defects such as high quality (higher steel density) and easy corrosion, so it requires a lot of manpower and material resources in the construction, transportation and maintenance of the tower. With the development of composite material production technology and its manufacturing process, composite materials have the ch...

Claims

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Application Information

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IPC IPC(8): H02G1/02H02G7/20H02G13/00H01R4/66
Inventor 李志军谷定燮周沛洪戴敏邬雄刘凯刘庭霍锋
Owner STATE GRID ELECTRIC POWER RES INST
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