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Upward-winding tension-resistant tower on extra-high-voltage direct-current transmission line

An ultra-high voltage direct current and tension tower technology, applied in the field of high-voltage power transmission, can solve the problems of high cost and non-compliance with environmental protection requirements, and achieve the effect of reducing the height of the air, reducing the consumption of tower materials, and facilitating the construction.

Inactive Publication Date: 2014-06-04
STATE GRID CORP OF CHINA +8
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The embodiment of the present invention provides a UHV DC line top-wound tension tower to solve the disadvantages of the prior art that do not meet the requirements of environmental protection and have high cost

Method used

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  • Upward-winding tension-resistant tower on extra-high-voltage direct-current transmission line
  • Upward-winding tension-resistant tower on extra-high-voltage direct-current transmission line
  • Upward-winding tension-resistant tower on extra-high-voltage direct-current transmission line

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] figure 1 It is a structural schematic diagram of a top-wound strain tower for a UHV DC line according to an embodiment of the present invention. Such as figure 1 As shown, the UHV DC line top-wound strain tower in this embodiment includes a tower body 1, a tower leg 2, a ground wire support 3 and a wire cross arm 4, and an upper-winding wire jumper bracket is arranged outside the ground wire support 5. The lower plane of the upper-winding jumper brack...

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Abstract

The embodiment of the invention provides an upward-winding tension-resistant tower on an extra-high-voltage direct-current transmission line. The upward-winding tension-resistant tower comprises a tower body, tower legs, a ground wire support and a guide wire cross arm, wherein an upward-winding wire jumper support is arranged on the outer side of the ground wire support, and the lower plane of the upward-winding wire jumper support is perpendicular to the central axis of the ground wire support; above the guide wire cross arm, an upward-winding wire jumper guides the current to an advancing side strain clamp from a retreating side strain clamp. According to the upward-winding tension-resistant tower on the extra-high-voltage direct-current transmission line, it is avoided that because the distance from the wire jumper to the ground is not enough, the rooting problem is caused or because the distance between trees on a high slope is not enough, the trees should be cut. Besides, for the tension-resistant tower located on a steep slope, the edge phase wire jumper is wound upwards to be arranged, on the one hand, influences on the environment are reduced, on the other hand, the perpendicular distance from a cross arm on the lowermost layer of the tower to the ground is effectively reduced, the consumption of tower material of the iron tower is reduced, and finally the purposes that comprehensive investment of the line is saved, the tower is convenient to construct and running reliability of the line is improved are achieved.

Description

technical field [0001] The invention relates to the field of high-voltage power transmission, in particular to a top-wound strain tower for an ultra-high voltage direct current line. Background technique [0002] At present, domestic ±800kV DC single-circuit strain towers mainly adopt dry-shaped iron towers, and the two poles are connected by a jumper scheme (down-lead jumper) hanging under the wire crossarm. There are mature design experiences in transmission lines. [0003] Due to the influence of jumper string length, jumper sag, and strain string inclination angle, the lowest point of the live part of the down-lead jumper of ±800kV UHV DC line is about 11m lower than the cross-arm of the strain tower conductor, so it may It will cause the tension tower to be squared to the ground or raised due to the insufficient distance between the jumper and the ground, especially in mountainous areas, where the tension tower stands on a steep slope, and the ground elevation of one p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04H12/10E04H12/24
Inventor 曾二贤赵江涛段松涛曾德森尹鹏吴海洋白强冯衡冯德奎包永忠舒爱强郭念柯嘉胡星徐彬李鑫刘嘉鹏宗保龙薛春林何江范峥王学明殷锴张媛肖兵肖洪伟李育兵张哲鑫王启明施芳
Owner STATE GRID CORP OF CHINA
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