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An operation method for quickly recovering main insulation breakdown of tubular busbar

A fast recovery and operation method technology, applied in the installation of busbars, fully enclosed busbar devices, insulation/armoured cable repair equipment, etc., can solve the problem of inability to add additional intermediate joints, easy insulation breakdown of busbars, time-consuming removal and installation Problems such as labor consumption, to achieve the effect of saving manpower, material and financial resources, high mechanical strength and low cost

Active Publication Date: 2022-06-24
西北水利水电工程有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the construction personnel do not handle the joints properly, water or moisture will enter the busbar and insulation breakdown will easily occur. Because the length of the tubular busbar is fixed, it is impossible to add additional intermediate joints, and generally only replacement can be used.
Long processing cycle, slow construction, time-consuming and labor-intensive dismantling and installation, and high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0047] The first embodiment of the present invention relates to an operation method for rapidly recovering the main insulation breakdown of a tubular busbar, comprising the following steps:

[0048] S1. Find the insulation breakdown point, and check and analyze the damage degree of the fault, confirm that the main insulation layer of the tubular busbar has been damaged, and the conductor is not damaged, and proceed to the next step;

[0049] S2. Disconnect the flexible connections of the low-voltage side of the main transformer, the high-voltage switchgear and the tubular busbar respectively, and remove the sealing wall plate and the fixing fittings of the tubular busbar at the place to be repaired;

[0050] S3. Pre-treatment of the insulation breakdown point of the tubular busbar;

[0051] S4. Wrap the semiconductor nylon tape;

[0052] S5. Wrap copper tape;

[0053] S6. Wrap 3M stress control tape;

[0054] S7. Restore the insulation at the breakdown point of the tubular ...

no. 2 approach

[0060] The operation method for quickly recovering the main insulation breakdown of the tubular busbar provided by this embodiment includes the following steps:

[0061] S1. Find the insulation breakdown point, and check and analyze the damage degree of the fault, confirm that the main insulation layer of the tubular busbar has been damaged, and the conductor is not damaged, and proceed to the next step;

[0062] S2. Disconnect the flexible connection of the low-voltage side of the main transformer, the high-voltage switch cabinet and the tubular busbar respectively, and remove the sealing wall plate and the fixing fittings of the tubular busbar at the place to be repaired;

[0063] S3. Pre-treatment of the insulation breakdown point of the tubular busbar, including:

[0064] S301, peel off the outer sheath layer on both sides of the insulation breakdown point to expose the copper shielding layer;

[0065] The stripping length of the outer sheath layer on both sides of the insu...

no. 3 approach

[0081] The operation method for quickly recovering the main insulation breakdown of the tubular busbar provided by this embodiment includes the following steps:

[0082] S1. Find the insulation breakdown point, and check and analyze the damage degree of the fault, confirm that the main insulation layer of the tubular busbar has been damaged, and the conductor is not damaged, and proceed to the next step;

[0083] S2. Disconnect the flexible connections of the low-voltage side of the main transformer, the high-voltage switchgear and the tubular busbar respectively, and remove the sealing wall plate and the fixing fittings of the tubular busbar at the place to be repaired;

[0084] S3. Pre-treatment of the insulation breakdown point of the tubular busbar, including:

[0085] S301, peel off the outer sheath layer on both sides of the insulation breakdown point to expose the copper shielding layer;

[0086] The stripping length of the outer sheath layer on both sides of the insul...

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PUM

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Abstract

The invention provides an operation method for quickly recovering the main insulation breakdown of the tubular busbar, including: S1. Finding the insulation breakdown point, and checking and analyzing the damage degree of the fault, confirming that the main insulating layer of the tubular busbar has been damaged, and If the conductor is not damaged, proceed to the next step; S2. Separately disconnect the soft connection between the low-voltage side of the main transformer, the high-voltage switchgear and the tubular busbar, and remove the sealing wall plate and the fixing fittings for the tubular busbar at the place to be repaired; S3. S4. Wrap semiconductor nylon tape; S5. Wrap copper tape; S6. Wrap 3M stress control tape; S7. Restore the insulation at the breakdown point of tubular busbar; Sheath; S9. Fix the fittings again, install the soft connection, and install the wall sealing board; S10. Check, test, and power on after passing the test. The design of this operation method is reasonable, no need to re-make the intermediate joint or replace the tubular busbar, the installation is simple, flexible and convenient, and can save a lot of manpower, material and financial resources.

Description

technical field [0001] The invention belongs to the technical field of electric wires and cables, and in particular relates to an operation method for rapidly restoring the main insulation breakdown of an insulating tubular copper busbar. Background technique [0002] Due to the large current carrying capacity, good heat dissipation conditions, large allowable stress, high mechanical strength, strong insulation and high heat resistance of the insulated tubular busbar, due to the large current carrying capacity, low skin effect, low power loss, good heat dissipation conditions, and temperature rise Low allowable stress, high mechanical strength and many advantages, it is widely used in the main transformer of substations to lower the busbar. [0003] When the construction personnel handle the joints improperly, it is easy to cause insulation breakdown when water or moisture enters the busbar. Because the length of the tubular busbar is fixed, it is not possible to add additio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G1/16H02G5/06
CPCH02G1/16H02G5/061
Inventor 王银东米媛李旭郭建龙冯羽任成荣
Owner 西北水利水电工程有限责任公司