The Method of Replacing Multi-circuit Tension Insulator Strings in Live Work Supported by Drainage Lines

A technology of tension insulator strings and live work, applied in the direction of overhead lines/cable equipment, etc., can solve the problem of inability to detect or replace live insulators of multi-circuit tension towers on the same tower, affecting the reliability and time of power supply of the power grid, and upper-phase drainage The distance between the line and the operation cross-arm is small, etc., so as to improve the safety maintenance, improve the operation efficiency and guarantee the operation quality

Active Publication Date: 2016-08-17
PINGDINGSHAN POWER SUPPLY ELECTRIC POWER OF HENAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the operation and management of the power grid, when the staff is performing insulator inspection or live replacement on the multi-circuit tension tower on the same tower, they often encounter the situation that the distance between the upper phase diversion line and the working cross arm is small, which does not meet the normal working space requirements. It is impossible for the staff to directly carry out insulator detection or live replacement on the multi-circuit tension tower of the same tower, and the effective working space does not allow workers to enter. The traditional method of detection or live insulator replacement usually uses the remote operation of the insulation operating rod or the line. Power outage measures, remote operation of insulating operating rods, time-consuming, laborious, and low work efficiency; and taking power outage measures will cause large-scale power grid outages, seriously affecting the power supply reliability and power supply time of the power grid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The method of replacing multi-circuit tension insulator strings by using diversion wires to support live work to extend the distance The live replacement of tension insulator strings on a 220kV line includes the following steps:

[0058] 1) The person in charge of the work applies to the grid dispatcher to start work: I am the person in charge of XXX, and I need to replace the tension insulator strings on the 220kV XX line with electricity on X, X, X, X, and apply for deactivation of the line reclosing device for this operation. In the event of a line trip, no forced delivery without contact; after obtaining dispatch permission, check the double name and pole number of the line;

[0059] 2) The person in charge of the work reads out the work ticket on the spot, explains the work tasks, safety measures and technical measures; checks the mental state of the operators, the state of clothing and whether the tools are in good condition; explains the danger points and preventi...

Embodiment 2

[0078] The method of replacing multi-circuit tension insulator strings by using diversion wires to support live work to extend the distance. The live replacement of disc-shaped porcelain tension insulator strings on a 220kV line includes the following steps:

[0079] 1) Apply for deactivation of line reclosing, check the double name and pole number of the line;

[0080] 2) Clarify the division of labor, safety measures and precautions;

[0081] 3) The staff uses a megohmmeter to test the insulation resistance of the insulating tool, check whether the load-bearing tool is intact and flexible, and whether the shielding suit is intact;

[0082] 4) The ground potential electrician and the equipotential electrician climb the tower to the cross arm, fasten and hang the safety belt, hang the insulating transmission rope at an appropriate position, and the ground potential electrician cooperates with the ground electrician to transfer the diversion wire support distance expansion devi...

Embodiment 3

[0098] The method of replacing multi-circuit tension insulator strings by using diversion wires to support live work to extend the distance. The live replacement of disc-shaped porcelain tension insulator strings on a 110kV line includes the following steps:

[0099] 1) Apply for deactivation of line reclosing, check the double name and pole number of the line;

[0100] 2) Clarify the division of labor, safety measures and precautions;

[0101] 3) The staff uses a megohmmeter to test the insulation resistance of the insulating tool, check whether the load-bearing tool is intact and flexible, and whether the shielding suit is intact;

[0102] 4) The ground potential electrician and the equipotential electrician climb the tower to the cross arm, fasten and hang the safety belt, hang the insulating transmission rope at an appropriate position, and the ground potential electrician cooperates with the ground electrician to transfer the diversion wire support distance expansion devi...

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PUM

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Abstract

The invention discloses a method for replacing multi-circuit tension insulator strings in live operations supported by diversion wires for extended distance. During the operation of the method, no power outage is required, and the distance between the upper phase diversion wires and the work cross arm is small and does not meet the normal working space. When necessary, the operator can effectively reach the end of the cross-arm of the multi-circuit tension pole tower to detect or replace the multi-circuit insulator on the same tower. The operation is simple, safe and reliable, and the operation efficiency is high. It can be widely used in the operation of replacing the whole string of insulators with live ground potential, replacing single-piece insulators with line string with live potential at ground potential, detecting zero-value insulators with straight line with live potential at ground potential, replacing drain wire hanging bottles with live potential at ground potential, etc.

Description

technical field [0001] The invention relates to the technical field of replacing multi-circuit linear insulators, in particular to a method for replacing multi-circuit tension insulator strings in live operation supported by diversion lines. Background technique [0002] At present, in the operation and management of the power grid, when the staff is performing insulator inspection or live replacement on the multi-circuit tension tower on the same tower, they often encounter the situation that the distance between the upper phase diversion line and the working cross arm is small, which does not meet the normal working space requirements. It is impossible for the staff to directly carry out insulator detection or live replacement on the multi-circuit tension tower of the same tower, and the effective working space does not allow workers to enter. The traditional method of detection or live insulator replacement usually uses the remote operation of the insulation operating rod ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G1/02
Inventor 肖春伟朱玉伟周乐超金会军王华宾平林涛范松坡
Owner PINGDINGSHAN POWER SUPPLY ELECTRIC POWER OF HENAN
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