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Method for changing protective screen without cutting small bus for transformer substation

A technology of protective screen and small busbar, applied in electrical components, switchgear and other directions, can solve the problem of uneven top of the protective screen, and achieve the effect of saving construction period

Active Publication Date: 2012-06-20
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Under normal circumstances, the small busbars are arranged neatly, and there is no break point in the middle of each small busbar. If the method of cutting the small busbars and then jumping through the small busbars is used, the top of the protective screen will eventually be uneven.

Method used

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  • Method for changing protective screen without cutting small bus for transformer substation

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Effect test

Embodiment

[0031] Embodiment: A method for replacing the protective screen without cutting the small busbar in a substation. The height of the new protective screen is the same as that of the old protective screen. The specific steps are as follows:

[0032] A. Operation steps before exiting the old protective screen:

[0033] (1), remove the old protective screen head, remove the protective screen top ring;

[0034] (2) Set a large piece of waste plastic cloth as insulating material between the hand and the small bus bar, and remove the down lead of the small bus bar; since the original down lead of the small bus bar is connected to the side screw of the small bus bar terminal block, you can cut off the small For busbar down-leads, wrap the exposed wire ends with insulating tape;

[0035] (3) Remove the terminal base screw used to fix the small bus bar on the top of the screen, so that the small bus bar and its base are separated from the protective screen;

[0036] (4) When all the w...

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Abstract

The invention discloses a method for changing a protective screen without cutting a small bus for a transformer substation. By means of condition that a new protective screen is as high as the old one, the small bus at the top of the screen cannot be lifted up after the new protective screen is installed. The method comprises the steps of: pushing the protective screen out of the original place after detaching a connecting wire in the old protective screen and separating a small bus terminal row from the top of the screen; detaching an accessory installed at the top of the new protective screen; pushing the new protective screen into the installing place and fixing the small bus terminal row at the top of the screen on the new protective screen so as to achieve the purpose of changing the protective screen. According to the method disclosed by the invention, a work loop in which the dangerous point of cutting the small bus is not easy to control is avoided, the protective screen is changed without cutting the small bus so that the dangerous point in the working process is easy to control; meanwhile the time for changing the protective screen is shortened to 2.5 days, and thereby the construction period is shortened by 1.5 days.

Description

Technical field: [0001] The invention relates to a method for replacing a protective screen without cutting a small busbar in a substation. Background technique: [0002] In the work of replacing the protective screen in the substation, the most troublesome part of the replacement of the protective screen is undoubtedly the trouble of the existence of the small busbar to the replacement of the protective screen. At present, the conventional method is: first bridge the busbar to replace the part that needs to be cut off to replace the protective screen, then cut off the small busbar, and then replace the protective screen. [0003] Under normal circumstances, the small busbars are arranged neatly, and there is no break point in the middle of each small busbar. If the method of cutting the small busbars and then jumping through the small busbars is used, the top of the protective screen will eventually be uneven. Invention content: [0004] The technical problem to be solve...

Claims

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Application Information

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IPC IPC(8): H02B3/00
Inventor 张伟政钟浩吕利敏孙卉丁洋涛孙元王桂亭李霞
Owner STATE GRID CORP OF CHINA
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