Overhead distribution line

A technology of distribution lines and wires, which is applied in the field of overhead distribution lines, can solve problems such as poor stability of lightning arresters or lightning protection insulators, threats to personal safety, and high labor costs, so as to achieve stable and reliable electrical performance, simplify line structure, The effect of reducing labor costs

Active Publication Date: 2018-02-16
JIANGSU SHENMA ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the start of distribution network transformation this year, 10kV overhead insulated line systems gradually adopt insulated wires. Compared with bare wires, insulated wires have superior insulation performance, which can effectively prevent phase-to-phase short circuits caused by foreign objects and improve line safety power supply. Reliability and voltage quality, but since the use of insulated wires, lightning strike disconnection accidents often occur, threatening personal safety and causing huge property and economic losses
In order to solve the above technical problems, a series of lightning protection measures are mainly carried out by installing lightning arresters or lightning protection insulators. However, the stability of installing lightning arresters or lightning protection insulators is not good, and regular inspection and maintenance are required, which consumes a lot of labor costs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0043] Please refer to Figure 1-Figure 6 . Such as figure 1 As shown, the overhead power distribution line 10 includes a tension rod 101, two composite cross arms 102 and a tension fixture 103; the middle part of the composite cross arms 102 is horizontally fixed on the tension rod 101, and the ends of the composite cross arms 102 are connected There is a tension-resistant fixing piece 103, which connects the two composite cross-arms 102 into one, and the tension-resistant fixing piece 103 is used for fixing the wire.

[0044] Specifically, the middle part of the composite cross-arm 102 is horizontally fixed on the tension bar 101, so that both ends 10211 / 10212 of the composite cross-arm 102 are free ends, and the middle part here does not necessarily refer to the middle of the composite cross-arm 102, It refers to other regions except the two ends 10211 / 10212. The advantage of such fixing is that a composite cross arm 102 can be used to realize the fixing of two-phase con...

Embodiment approach 2

[0066] Such as Figure 7 As shown, the overhead power distribution line 20 of this embodiment includes: a tension rod 201, two composite cross arms 202 and a tension fixing member 203; the middle part of the composite cross arm 202 is horizontally fixed on the tension rod 201, and the composite cross arm 202 The end of each is connected with a tension-resistant fixing piece 203, which connects the two composite cross-arms 202 into one, and the tension-resistant fixing piece 203 is used to fix the wire.

[0067] In addition, the overhead power distribution line 20 also includes two top phase cross arms 204, the top phase cross arms 204 are vertically fixed on the top of the tension rod 201 away from the ground, and the ends of the top phase cross arms 204 are connected with top phase tension anchors. 205, the top phase tension fixing piece 205 connects the two top phase cross arms 204 into one, and the top phase tension fixing piece 205 is used to fix the wire.

[0068] Specif...

Embodiment approach 3

[0074] Please refer to Figure 10 with Figure 11 , the overhead power distribution line 30 of the present embodiment includes: a tension rod 301, two composite cross arms 302 and a tension fixture 303; the middle part of the composite cross arm 302 is horizontally fixed on the tension rod 301, and the end The upper part is connected with a tension-resistant fixing piece 303, which connects the two composite cross-arms 302 into one, and the tension-resistant fixing piece 303 is used to fix the wire.

[0075] The overhead distribution line 30 also includes two top phase cross arms 304, the top phase cross arms 304 are vertically fixed on the top of the tension rod 301 away from the ground, and the ends of the top phase cross arms 304 are connected with a top phase tension fixture 305 , the top-phase tension-resistant fixing member 305 connects the two top-phase cross-arms 304 into one, and the top-phase tension-resistant fixing member 305 is used to fix the wire.

[0076]In t...

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PUM

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Abstract

The invention discloses an overhead distribution line, which comprises a strain pole, two composite cross arms and strain fixed parts, wherein the middle parts of the composite cross arms are horizontally fixed on the strain pole; the end parts of the composite cross arms are connected with the strain fixed parts; the two composite cross arms are connected into a whole through the strain fixed parts; and the strain fixed parts are used for fixing wires. Through the overhead distribution line, two composite cross arms are fixed on the same horizontal plane of the strain pole, so that the longitudinal tension required for tension can be met; the dry arcing distance can be further greatly increased by using compounding of composite cross arm bodies, the electrical lightning withstand level can be improved and the accidents, such as lightning stroke breakage flashover are avoided; the composite cross arms are free of maintenance and free of periodic inspection and maintenance, so that thehuman cost is greatly reduced; and a strain insulator can be omitted through use of the composite cross arms, so that the structure of the line is simplified.

Description

technical field [0001] The present invention relates to the technical field of overhead lines, in particular to an overhead power distribution line. Background technique [0002] With the start of distribution network transformation this year, 10kV overhead insulated line systems gradually adopt insulated wires. Compared with bare wires, insulated wires have superior insulation performance, which can effectively prevent phase-to-phase short circuits caused by foreign objects and improve line safety power supply. However, since the use of insulated wires, lightning strike disconnection accidents have often occurred, threatening personal safety and causing huge property and economic losses. In order to solve the above technical problems, a series of lightning protection measures are mainly carried out by installing lightning arresters or lightning protection insulators. However, the stability of installing lightning arresters or lightning protection insulators is not good, and...

Claims

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Application Information

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IPC IPC(8): H02G7/20
CPCH02G7/20E04H12/24H01B17/14H01B17/16Y02A30/14
Inventor 马斌李德权郁杰方江黄清
Owner JIANGSU SHENMA ELECTRIC CO LTD
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