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Special maintenance method for sag adjustment of electric conductors

A technology of power conductor and chi-du, applied in the direction of overhead line/cable equipment, etc., can solve the problems affecting the transmission efficiency, economic loss, error, etc.

Active Publication Date: 2014-05-21
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The power transmission is transmitted through the power line, and the power line is exposed to the external environment. Due to the effect of the natural environment, the gravity of the power line and other factors, the power line is prone to looseness or tension after a period of use. The situation is easy to affect the service life of the power line. In the past, people adjusted it through the maintenance personnel based on experience. This has a large error, which often results in improper adjustment, and the service life of the power line cannot be guaranteed, which affects power transmission. efficiency, resulting in economic loss

Method used

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  • Special maintenance method for sag adjustment of electric conductors
  • Special maintenance method for sag adjustment of electric conductors
  • Special maintenance method for sag adjustment of electric conductors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] It is specially used for the maintenance method of the slack of the power conductor. The ambient temperature at that time is measured in advance as 20°C, and t1 is set to 25°C, t2 is set to 15°C. It is obtained by looking up the table that f1 is 8m, and f2 is 4m. Use the formula

[0022]

[0023] It is calculated that f is 6m. Fix one end of the lever hoist on the cross arm, and connect the other end to the wire through an aluminum alloy clamp. Tighten the hand hoist to remove the pins and Tension-resistant wire clamp, use the tightening of the lever block to transfer the calculated slack value of the wire 6m to the lever block for adjustment;

[0024] At the wire suspension points of the straight rods on both sides, measure the distance equal to the sag value vertically downwards, and tie a sag board to each. The sag plate on the side pole adjusts the tension of the wire so that the wire is just cut on the aiming line, and the sag at this time is the required sag; ...

Embodiment 2

[0028] It is specially used for the maintenance method of the slack of the power conductor. The ambient temperature at that time is measured in advance as 12°C, and t1 is set to 15°C, t2 is set to 6°C. It is obtained by looking up the table that f1 is 4m and f2 is 1.8m. Use the formula

[0029]

[0030] It is calculated that f is 2.9m. Fix one end of the lever hoist on the cross arm, and connect the other end to the wire through an aluminum alloy clamp. Tighten the hand hoist to remove the pins at the elbow hanging plate and the tension clamp. and tension clamp, use the tightening of the lever block to transfer the calculated slack value of the wire 2.9m to the lever block for adjustment;

[0031] At the wire suspension points of the straight rods on both sides, measure the distance equal to the sag value vertically downwards, and tie a sag board to each. The sag plate on the side pole adjusts the tension of the wire so that the wire is just cut on the aiming line, and the ...

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Abstract

The invention discloses a special maintenance method for sag adjustment of electric conductors. The special maintenance method includes: fixing one end of a lever hoist to a cross arm while connecting the other end of the same to an electric conductor through an aluminum-alloy close collet, tensioning the lever hoist, removing pins between an elbow clevis and a strain clamp and also removing the strain clamp, adjusting the calculated sag value f of the conductor by tensioning or releasing the lever hoist, respectively binding two sag plates at positions, with the distances measured downwards vertically and equal to the sag value, of conductor hanging points of linear poles on the two sides, and then aiming at the sag plate on the opposite pole from the sag plate on one pole, adjusting the conductor tension to acquire the sag as needed. By the aid of severe measurement and formula computing, accurate values are obtained, the electric conductors can be adjusted to the optimal status, and the problem of high error in the process of adjusting sag of the electric conductors by maintainers according to experiences is solved.

Description

technical field [0001] The invention relates to a maintenance method, in particular to a maintenance method dedicated to the slack of electric power conductors, which belongs to the field of electric power maintenance. Background technique [0002] Electricity is an energy source powered by electrical energy. Invented in the 1870s, the invention and application of electricity set off the second industrialization climax. It has become one of the three scientific and technological revolutions in the world since the 18th century in human history. Since then, technology has changed people's lives. Even in today's Internet age we still have a growing demand for electricity, as we have invented more products that use electricity, such as computers and home appliances. It is undeniable that the continuous emergence of new technologies has made electricity a necessity for people. The large-scale power system that appeared in the 20th century is one of the most important achieveme...

Claims

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Application Information

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IPC IPC(8): H02G1/02
Inventor 胡红琼
Owner STATE GRID CORP OF CHINA
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