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Deflection correction method for tubular busbar of 500kV substation

A technology for tubular busbars and substations, which is applied in the installation of busbars, electrical components, cables, etc., and can solve the problems affecting the opening and closing operation of tubular busbar isolation switches, the inability to replace tubular busbar brackets, and the inability to reduce Problems such as the deflection of tubular busbars, etc., achieve the effects of reliable correction methods, improved work efficiency, and saved man-hours

Inactive Publication Date: 2014-02-19
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that in the existing 500kV substation, due to the large deflection of the tubular busbar, the normal opening and closing operation of the tubular busbar isolation switch is affected, and the tubular busbar cannot be replaced when the upper layer of the power grid is charged. Bracket, so that the deflection of the tubular busbar cannot be reduced, and a method for correcting the deflection of the tubular busbar in a 500kV substation is provided

Method used

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  • Deflection correction method for tubular busbar of 500kV substation
  • Deflection correction method for tubular busbar of 500kV substation
  • Deflection correction method for tubular busbar of 500kV substation

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specific Embodiment approach 1

[0033] Specific implementation mode one: combine Figure 1-Figure 2 Describe this embodiment, the 500kV substation tubular busbar deflection correction method of this embodiment is realized according to the following steps,

[0034] Step 1. Determination of the minimum safe working clearance between the crane and the tubular busbar

[0035] (1) The minimum theoretical safe working clearance between the boom and the busbar is determined by Table 1

[0036] Table 1 The minimum theoretical safe working clearance between the boom and the busbar

[0037]

[0038] (2) The minimum theoretical safe working clearance between the hook and the busbar is determined by Table 2

[0039] Table 2 The minimum theoretical safe working clearance between the hook and the busbar

[0040]

[0041] Step 2. Replacement of tubular busbar bracket

[0042] On the basis of step 1, it is determined that the minimum actual safe working gap between the crane and the tubular busbar is 4.5mm~5mm, an...

specific Embodiment approach 2

[0063] Specific embodiment 2. The difference between this embodiment and specific embodiment 1 is that the minimum actual safe working clearance between the crane and the tubular busbar is 5mm. The area is the northeast plain area, and the geographical environment is below 1000m above sea level. Considering the factors of the induction electricity of the crane and the wire and personal safety, the reserved safe operation gap is set at 5m, and the operation is safe and reliable. The degree of danger is low, meeting the design requirements and needs. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0064] Specific Embodiment 3. The difference between this embodiment and specific embodiment 1 or 2 is that the crane lifts the first lifting point to a distance of 6 meters from the upper conductor. Such setting is convenient for safe operation, stable and reliable. Others are the same as in the first or second embodiment.

[0065] Further illustrate the present invention below in conjunction with specific embodiment

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Abstract

The invention discloses a deflection correction method for a tubular busbar of a 500kV substation, and relates to the deflection correction method for the tubular busbar. The deflection correction method for the tubular busbar of the 500kV substation is used for solving the problems that due to the fact that the deflection of a tubular busbar in an existing 500kV substation is high, normal opening operation and normal closing operation of a disconnector of the tubular busbar are influenced, a bracket of the tubular busbar cannot be replaced on the situation that an upper layer wire of a power grid is alive, and then the deflection of the tubular busbar cannot be reduced. The deflection correction method for the tubular busbar of the 500kV substation mainly comprises the steps of (1) determining the minimum safe operation gap between a crane and the tubular busbar, determining the minimum theoretical safe operation gap between a suspension arm and the tubular busbar, determining the minimum theoretical safe operation gap between a lifting hook and the tubular busbar, (2) replacing the bracket of the tubular busbar, and (3) correcting the deflection of the tubular busbar after the tubular busbar is lifted. The deflection correction method for the tubular busbar of the 500kV substation is used for correcting the deflection of the tubular busbar of the substation.

Description

technical field [0001] The invention relates to a method for correcting the deflection of a tubular busbar, in particular to a method for correcting the deflection of a tubular busbar in the case of live work on the middle and upper layers of a substation. Background technique [0002] In the safe operation of the complete power grid, the tubular busbar is an indispensable equipment. For example, the tubular busbar of the 500kV power distribution device adopts an outdoor supporting tubular busbar with an outer diameter of 250mm and an inner diameter of 230mm. Under the action of its own gravity and on-site wind force, the tubular busbar will sink and its deflection will increase after a long time, and the original tubular busbar bracket length is 0.6m, which cannot effectively delay the increase of the tubular busbar deflection at all. Threatening the safe operation of the equipment under the tubular busbar, it is necessary to replace the tubular busbar bracket with a length...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G5/00
Inventor 张继广韩思玮赵振江高俊秀宋海蛟孙然姚国胜杨柏奇
Owner STATE GRID CORP OF CHINA