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Anticorona discharge connection device for pressurization in high-voltage test

A high-voltage test and discharge connection technology, which is applied in the direction of testing dielectric strength, can solve the problems of potential safety hazards, easy damage of expanded wires, etc., and achieve the effect of convenient wiring, improving safety and work efficiency, and reducing the difficulty of wiring

Active Publication Date: 2015-06-24
ELECTRIC POWER RES INST OF STATE GRID ANHUI ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that currently used expanding wires are easily damaged during the field high-voltage test and have certain potential safety hazards, the invention provides a strong and durable anti-corona discharge connection device

Method used

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  • Anticorona discharge connection device for pressurization in high-voltage test
  • Anticorona discharge connection device for pressurization in high-voltage test
  • Anticorona discharge connection device for pressurization in high-voltage test

Examples

Experimental program
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Effect test

Embodiment 1

[0015] see figure 1 and figure 2 , the anti-corona discharge connection device for high-voltage test pressurization includes six annular pressure equalizing rings 1, the ring wall of the pressure equalizing ring is cylindrical; the middle part of each pressure equalizing ring 1 is installed with four support rods 4 to form Cross-shaped support structure, the two ends of each support rod are screw rods, the middle part of the cross-shaped support structure is the connecting column 5, and the connecting column 5 is a cylinder; one end of each support rod is connected to the inner ring of the pressure equalizing ring, and the other end is connected to A columnar connecting column 5; the middle part of the connecting column 5 is provided with an axially penetrating wire hole; the outer rings of the six pressure equalizing rings are evenly connected with four insulating tapes 2 to form a cylinder; a wire 3 runs through each Inside the conductor hole of a grading ring. The materi...

Embodiment 2

[0018] see image 3 , the present invention is used in the transformer partial discharge test process, the outlet bushing 7 of the intermediate transformer 6 is connected with the wire 3 on the voltage equalizing ring 1 through a metal connecting wire. The conductor 3 on the grading ring 1 is applied to the low-voltage bushing of the tested transformer 8 through a metal connecting wire.

Embodiment 3

[0020] The present invention is used in the partial discharge test process of transformers. Two of the present inventions with the same structure are connected in series to form a 6m long anti-corona pressure line. The other connection methods are the same as in Embodiment 2.

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Abstract

The invention relates to an anticorona discharge connection device for pressurization in a high-voltage test. The device comprises more than three circular grading rings, wherein more than three supporting rods are arranged in the middle of each grading ring; one end of each supporting rod is connected with an inner ring of each grading ring, and the other end of each supporting rod is connected with a columnar connection column; axially penetrating wire holes are formed in the middles of the connection columns, and a wire is arranged in the wire holes; more than three insulation belts are uniformly distributed and connected with outer rings of the more than three grading rings to form a cylinder; and one wire penetrates through the wire holes of the grading rings. The device can prevent the wires from corona discharge, can prevent an ordinary expanded wire in the scene from being easily damaged, and is firm and durable, so that the wire connection during the scene test is facilitated, the wire connection difficulty is reduced, and the safety and the working efficiency of the scene high-voltage test are improved.

Description

technical field [0001] The invention belongs to the field of high-voltage testing of electrical equipment, and in particular relates to an anti-corona connection device for high-voltage testing. Background technique [0002] High-voltage connecting wires are needed in the high-voltage test of electrical equipment, and in some specific test items, such as partial discharge measurement, it is necessary to prevent the corona discharge of the high-voltage connecting wire itself. Usually, the method used in the high-voltage test to prevent corona from the high-voltage connecting wire is to use the expanded diameter connecting wire as a shield to increase the diameter of the wire, thereby avoiding the corona discharge of the wire. Expanded wires are often made of helical steel wires as the skeleton, and then covered with aluminum foil or aluminum foil with a plastic film on the surface to form a cylindrical structure. When used in the field test, due to the poor toughness of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/12
Inventor 朱太云杨道文叶剑涛
Owner ELECTRIC POWER RES INST OF STATE GRID ANHUI ELECTRIC POWER
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