A New Method for Butt-connection of 10kv Large-capacity Overhead Line Leads

An overhead line, large-capacity technology, applied in the direction of line/collector components, circuits, connections, etc., can solve the problems of high resistivity of the contact surface, serious power loss, difficulty in docking stability and quality assurance, and achieve non-stop shares, saving power loss, and stable docking

Active Publication Date: 2020-06-09
江西远大科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the 10k V large-capacity overhead line is connected with lead wires, the contact surface resistivity of the traditional connection method is relatively large, resulting in serious power loss, and it is difficult to guarantee the stability and quality of the connection

Method used

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  • A New Method for Butt-connection of 10kv Large-capacity Overhead Line Leads
  • A New Method for Butt-connection of 10kv Large-capacity Overhead Line Leads
  • A New Method for Butt-connection of 10kv Large-capacity Overhead Line Leads

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A new method for connecting leads of 10k V large-capacity overhead lines, comprising the following steps:

[0046] S1: Preparation before docking, install insulators at the docking position of the lead wires of the overhead line, the insulators are installed on the iron cross arm and form an insulator string, the insulator string can be flexibly rotated in the direction of the line and in the direction of the vertical line, the specific steps as follows:

[0047] The upturned angle of the end of the iron cross-arm is 5° to prevent the wire or lead wire from slipping off;

[0048] The insulator is a pin-type insulator, which is installed vertically on the iron cross-arm, and is fixed with spring washers or double nuts to prevent loosening;

[0049] And / or, the insulator is an all-ceramic cross-arm insulator, and rubber gaskets are added when installing on the iron cross-arm to prevent surface damage of the all-ceramic cross-arm insulator due to friction.

[0050] S2: P...

Embodiment 2

[0075] A new method for connecting leads of 10k V large-capacity overhead lines, comprising the following steps:

[0076] S1: Preparation before docking, install insulators at the docking position of the lead wires of the overhead line, the insulators are installed on the iron cross arm and form an insulator string, the insulator string can be flexibly rotated in the direction of the line and in the direction of the vertical line, the specific steps as follows:

[0077] The upturned angle of the end of the iron cross-arm is 7.5° to prevent the wire or lead wire from slipping off;

[0078] The insulator is a pin-type insulator, which is installed vertically on the iron cross-arm, and is fixed with spring washers or double nuts to prevent loosening;

[0079] And / or, the insulator is an all-ceramic cross-arm insulator, and rubber gaskets are added when installing on the iron cross-arm to prevent surface damage of the all-ceramic cross-arm insulator due to friction.

[0080] S2:...

Embodiment 3

[0105] A new method for connecting leads of 10k V large-capacity overhead lines, comprising the following steps:

[0106] S1: Preparation before docking, install insulators at the docking position of the lead wires of the overhead line, the insulators are installed on the iron cross arm and form an insulator string, the insulator string can be flexibly rotated in the direction of the line and in the direction of the vertical line, the specific steps as follows:

[0107] The upturned angle of the end of the iron cross-arm is 10° to prevent the wire or lead wire from slipping off;

[0108] The insulator is a pin-type insulator, which is installed vertically on the iron cross-arm, and is fixed with spring washers or double nuts to prevent loosening;

[0109] And / or, the insulator is an all-ceramic cross-arm insulator, and rubber gaskets are added when installing on the iron cross-arm to prevent surface damage of the all-ceramic cross-arm insulator due to friction.

[0110] S2: ...

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Abstract

The invention discloses a new method for lead butt joint of a 10KV high-capacity overhead line, which comprises the steps of S1, preparation before the butt joint; S2, pretreatment of a conductor anda parallel groove clamp; and S3, butt joint of a lead, wherein the lead passes through the parallel groove clamp, and a transition lead and a down lead are transitionally connected to the main conductor by adopting the parallel groove clamp and do not bound with the return of an insulator; the binding methods include a binding joint method, a fork joint method and a crimping method. According to the new method for strictly controlling the lead butt joint of the 10KV high-capacity overhead line, pretreatment is carried out on the conductor surface and the parallel groove clamp, an oxide film and burrs on the butt-joint contact surface are removed, the contact resistance can be reduced during the butt joint, the electric energy loss of the overhead line is saved, the conductor adopts three binding methods which can be selected according to different types and specifications of the conductor, and the butt joint is convenient in use. In addition, the lead butt joint is stable, there is nobroken strands, twisted strands or dead bends, and the butt joint quality is guaranteed.

Description

technical field [0001] The invention relates to the technical field of overhead lines, in particular to a new method for connecting lead wires of 10kV large-capacity overhead lines. Background technique [0002] Overhead lines mainly refer to overhead open lines, erected above the ground, and are transmission lines that use insulators to fix the transmission wires on the towers standing on the ground to transmit electric energy. It is convenient to erect and maintain, and the cost is low, but it is easily affected by weather and environment (such as strong wind, lightning strike, pollution, ice and snow, etc.) . The main components of overhead lines are: wires and lightning conductors (overhead ground wires), towers, insulators, fittings, tower foundations, pull wires and grounding devices, etc. [0003] When the 10k V large-capacity overhead lines are connected by lead wires, the contact surface resistivity of the traditional connection method is relatively large, resulti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01R43/26H01R43/28
CPCH01R43/26H01R43/28
Inventor 韦立科陈文平林荣杰熊俊罗叙明吴建军
Owner 江西远大科技有限公司
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