Method for vertical grounding led-down outside composite material pole tower and pole tower thereof

A composite material and grounding down-conductor technology, which is applied in the configuration of grounding wires, the spatial arrangement/configuration of cables, etc., can solve the problems of the transmission corridor width compression and anti-fouling that affect the line, and the lightning protection effect of composite material towers. , to achieve the effect of easy implementation, simple structure, and reduced lightning trip rate

Inactive Publication Date: 2010-06-23
STATE GRID ELECTRIC POWER RES INST +1
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Problems solved by technology

[0006] Therefore, in areas with intensive lightning activities, the application of transmission line composite material towers has the problem of grounding (the all-steel tower is a metal conductor, and the ground wire is directly connected to the earth through the tower body, so there is no longer To consider the problem of grounding down), there are many different met

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  • Method for vertical grounding led-down outside composite material pole tower and pole tower thereof
  • Method for vertical grounding led-down outside composite material pole tower and pole tower thereof
  • Method for vertical grounding led-down outside composite material pole tower and pole tower thereof

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Embodiment Construction

[0025] figure 1 , Mark description in 3: 1-ground crossarm, 2-metal crossarm on grounding downlead, 3-grounding downconductor, 4-metal crossarm under grounding downconductor, 5-composite insulator, 6-crossarm Bearing fittings, 7-the tower body part of the tower head, 8-ground wire, 9-near side wire, 10-far side wire, 11-lower phase wire, 12-the lower part of the tower body, 13-the lower part of the tower body.

[0026] In the present invention, a section of metal cross-arm 2 on the grounding down-conductor is erected on the extension line of a certain side of the grounding cross-arm 1, and the end of the metal cross-arm 2 vertically leads down the grounding down-conductor 3, and the grounding down-conductor 3 The minimum air gap distance from the proximal conductor is D 1 (D 1 The value is determined by the lightning protection calculation)), the grounding downconductor 3 is connected to the tower through the corresponding grounding downconductor lower metal cross arm 4 at a...

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Abstract

The invention relates to a method for vertical grounding led-down outside a composite material pole tower and a pole tower thereof. In the method, a section of grounding lead upper metal cross arm is erected on an extension line on one side of a grounding cross arm; a grounding lead is led down vertically at the tail end of the metal cross arm; the grounding lead is connected to the pole tower through a corresponding grounding lead lower metal cross arm at a distance below a bottom phase lead, and finally, the grounding lead is grounded along a tower body; and if the lower part of the tower body is a steel pipe, the grounding lead can be connected to the steel pipe directly for grounding through the grounding lead lower metal cross arm. The method is favorable for compressing the width of a power transmission passageway to the utmost extent, and simultaneously is favorable for the design of lightning protection, prevents the grounding lead from being short-circuited with the tower body of the composite material pole tower, and gives play to the insulation function of the composite material tower body; besides, a unilateral grounding lead is adopted, so the method saves more materials is more economical, the structure is simple and convenient, and the method is easy to implement.

Description

technical field [0001] The invention relates to a method for vertically directing the outer side 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 of the high-voltage grades at home and abroad currently use all-steel towers. However, the all-steel tower also has defects such as high quality (higher steel density) and easy corrosion, so it needs to invest 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,...

Claims

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Application Information

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IPC IPC(8): H02G7/22H02G7/20
Inventor 李汉明李志军魏前虎刘庭邓世聪霍锋詹铭戴敏周伟才刘凯张育华邬雄曹宁谷定燮周沛洪何慧雯娄颖李振强
Owner STATE GRID ELECTRIC POWER RES INST
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