CN103236596A - Self-shielding grounding line set device for extra-high voltage tests - Google Patents
Self-shielding grounding line set device for extra-high voltage tests Download PDFInfo
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- CN103236596A CN103236596A CN2013101176162A CN201310117616A CN103236596A CN 103236596 A CN103236596 A CN 103236596A CN 2013101176162 A CN2013101176162 A CN 2013101176162A CN 201310117616 A CN201310117616 A CN 201310117616A CN 103236596 A CN103236596 A CN 103236596A
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- ground connection
- connection terminal
- cover body
- high voltage
- hemisphere cover
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Abstract
The invention discloses a self-shielding grounding line set device for extra-high voltage tests, and solves the problems that disturbance of partial discharging signals is easy to produce when partial discharging tests are performed on a plurality of extra-high voltage devices. A hemispherical metal cover body (1) is buckled on a left isolating foot pad (10) and a right isolating foot pad (11); a total grounding line column (2) is fixedly arranged at the center point of the inner wall of the hemispherical metal cover body (1); the total grounding line column (2) is vertically arranged, and the lower end of the total grounding line column (2) is connected with a grounding line; a plurality of grounding columns are arranged on an concentric circle of the inner wall of the hemispherical metal cover body (1) at equal radian internals; and an electro-magnetic induction eddy shielding shed (9) is arranged on the hemispherical metal cover body (1), and the width of the electro-magnetic induction eddy shielding shed (9) ranges from 1mm to 5mm. With the self-shielding grounding line set device, the problem of the disturbance of the partial discharging signals generated from tests in an extra-high voltage transformer substation and an extra-high voltage laboratory is solved.
Description
Technical field
The present invention relates to a kind of earthing device of extra-high voltage equipment test usefulness, particularly a kind of device that needs some reliable grounds of many equipment in a plurality of equipment such as ultra-high voltage transformer station and laboratory that is applied in.
Background technology
In the extra-high voltage equipment test, one point earth refers to provide a common common ground potential reference point for a plurality of electric equipments.Because a plurality of electric equipments have been had a common ground potential reference point, make different equipment can not form earth-return, and then also just can not form the signal interference problem between each equipment.Existing in the partial discharge test to extra-high voltage equipment, testing equipments such as instrument for measuring partial discharge, increasing apparatus, voltage divider are difficult to accomplish some reliable grounds, in the test loop, form earth-return easily, produce the interference of local discharge signal, directly have influence on the result of test, had influence on the bringing normally into operation of extra-high voltage equipment.
Summary of the invention
The invention provides a kind of ultra high voltage test with self-shileding ground connection line concentrator, solved the technical problem that when a plurality of extra-high voltage equipments are carried out partial discharge test, is easy to generate the interference of local discharge signal.
A kind of ultra high voltage test self-shileding ground connection line concentrator, comprise earth-shielded metal hemisphere cover body, the left insulation cushion pin of She Zhiing and right insulation cushion pin on the ground, metal hemisphere cover body snap onto left insulation cushion pin and right insulation cushion pin above, inwall central spot at metal hemisphere cover body is set with total ground connection terminal, total ground connection terminal is along vertical direction setting up and down, lower end and the ground wire of total ground connection terminal link together, the first-class radian of concentric circles compartment of terrain at the inwall of metal hemisphere cover body is provided with a plurality of ground connection terminals, metal hemisphere cover body is provided with the electromagnetic induction eddy current shielding and meets, the electromagnetic induction eddy current shielding is met between the culminating point and hemisphere cover body bottom margin that is arranged on metal hemisphere cover body, and the width that the electromagnetic induction eddy current shielding is met is the 1-5 millimeter.
The first-class radian of concentric circles compartment of terrain at the inwall of metal hemisphere cover body is respectively arranged with the first ground connection terminal, the second ground connection terminal, the 3rd ground connection terminal, the 4th ground connection terminal, the 5th ground connection terminal and the 6th ground connection terminal, bottom at each ground connection terminal is provided with junction block, and the ground connection terminal is connected with a testing equipment by the junction block of its bottom.
The present invention has realized that a plurality of testing apparatuss that use in the partial discharge test to extra-high voltage equipment carry out one point earth, and reduce the eddy current loss of shielded metal sphere to greatest extent, reduce the local temperature of shielded metal, solved the interference difficult problem of the local discharge signal that produces when puzzlement is carried out testing experiment in ultra-high voltage transformer station and ultra high voltage laboratory.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is that the present invention is at the structural representation of overlooking on the direction.
Embodiment
The present invention will be described below in conjunction with accompanying drawing:
A kind of ultra high voltage test self-shileding ground connection line concentrator, comprise earth-shielded metal hemisphere cover body 1, the left insulation cushion pin 10 of She Zhiing and right insulation cushion pin 11 on the ground, metal hemisphere cover body 1 snap onto left insulation cushion pin 10 and right insulation cushion pin 11 above, inwall central spot at metal hemisphere cover body 1 is set with total ground connection terminal 2, total ground connection terminal 2 is that vertical direction arranges about the edge, lower end and the ground wire of total ground connection terminal 2 link together, the first-class radian of concentric circles compartment of terrain at the inwall of metal hemisphere cover body 1 is provided with a plurality of ground connection terminals, metal hemisphere cover body 1 is provided with the electromagnetic induction eddy current shielding and meets 9, electromagnetic induction eddy current shielding meets 9 to be arranged between the culminating point and hemisphere cover body bottom margin of metal hemisphere cover body 1, and electromagnetic induction eddy current shields and meets 9 width is the 1-5 millimeter.
The first-class radian of concentric circles compartment of terrain at the inwall of metal hemisphere cover body 1 is respectively arranged with the first ground connection terminal 3, the second ground connection terminal 4, the 3rd ground connection terminal 5, the 4th ground connection terminal 6, the 5th ground connection terminal 7 and the 6th ground connection terminal 8, bottom at each ground connection terminal is provided with junction block, and the ground connection terminal is connected with a testing equipment by the junction block of its bottom.
Each ground connection terminal of the present invention all is welded on the shielded metal Internal Spherical Surface, they are connected respectively on the equipment that needs ground connection, the instrument, total ground connection terminal 2 is connected to ground wire, 1 pair of total earth point 2 of metal hemisphere cover body and each ground connection terminal play shielding action, it is to cut off the eddy current that the shielding sphere produces because of electromagnetic induction that 9 purposes are met in the electromagnetic induction eddy current shielding, calculate through electromagnetism, its dimension width is shield effectiveness the best when the 1-5 millimeter, can reduce the eddy current loss of shielded metal sphere to greatest extent, reduce the local temperature of shielded metal.Left side insulation cushion pin 10 and right insulation cushion pin 11 adopt insulating material to play a supportive role.
The present invention is exactly the interference that intercouples that will reduce as far as possible between each branch current at the design earth point.In power equipment, ground connection is the important method that control is disturbed, the present invention correctly combines use with ground connection and shielding, has solved most of interference problem of ultra-high voltage transformer station, ultra high voltage laboratory.
Claims (2)
1. a ultra high voltage is tested with self-shileding ground connection line concentrator, comprise earth-shielded metal hemisphere cover body (1), the left insulation cushion pin (10) of She Zhiing and right insulation cushion pin (11) on the ground, metal hemisphere cover body (1) snap onto left insulation cushion pin (10) and right insulation cushion pin (11) above, it is characterized in that, inwall central spot at metal hemisphere cover body (1) is set with total ground connection terminal (2), total ground connection terminal (2) is that vertical direction arranges about the edge, lower end and the ground wire of total ground connection terminal (2) link together, the first-class radian of concentric circles compartment of terrain at the inwall of metal hemisphere cover body (1) is provided with a plurality of ground connection terminals, metal hemisphere cover body (1) is provided with the electromagnetic induction eddy current shielding and meets (9), the electromagnetic induction eddy current shielding meets (9) to be arranged between the culminating point and hemisphere cover body bottom margin of metal hemisphere cover body (1), and it is the 1-5 millimeter that the width of (9) is met in the electromagnetic induction eddy current shielding.
2. a kind of ultra high voltage according to claim 1 is tested with self-shileding ground connection line concentrator, it is characterized in that, the first-class radian of concentric circles compartment of terrain at the inwall of metal hemisphere cover body (1) is respectively arranged with the first ground connection terminal (3), the second ground connection terminal (4), the 3rd ground connection terminal (5), the 4th ground connection terminal (6), the 5th ground connection terminal (7) and the 6th ground connection terminal (8), bottom at each ground connection terminal is provided with junction block, and the ground connection terminal is connected with a testing equipment by the junction block of its bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310117616.2A CN103236596B (en) | 2013-04-07 | 2013-04-07 | Self-shielding grounding line set device for extra-high voltage tests |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310117616.2A CN103236596B (en) | 2013-04-07 | 2013-04-07 | Self-shielding grounding line set device for extra-high voltage tests |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103236596A true CN103236596A (en) | 2013-08-07 |
| CN103236596B CN103236596B (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310117616.2A Active CN103236596B (en) | 2013-04-07 | 2013-04-07 | Self-shielding grounding line set device for extra-high voltage tests |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2172563Y (en) * | 1993-09-21 | 1994-07-20 | 聂彦将 | Grid-shielding lightning device |
| EP0805526A1 (en) * | 1996-04-30 | 1997-11-05 | Fluke Corporation | Shielded banana plug with double shroud and input receptacle |
| JPH10292155A (en) * | 1997-04-17 | 1998-11-04 | Nitto Denko Corp | Electroconductive adhesive tape and its production |
| CN2755913Y (en) * | 2004-12-10 | 2006-02-01 | 上海迪比特实业有限公司 | Electromagnetic shielding device |
| CN202094573U (en) * | 2011-05-25 | 2011-12-28 | 中国电力科学研究院 | Anti-corona ball for power transmission lines of high-altitude regions |
| CN102854345A (en) * | 2011-06-27 | 2013-01-02 | 苏州华电电气股份有限公司 | Shield cover of direct current high-voltage generator |
| CN203225358U (en) * | 2013-04-07 | 2013-10-02 | 国家电网公司 | A self-shielding grounding wire concentration apparatus used for extra-high-voltage tests |
-
2013
- 2013-04-07 CN CN201310117616.2A patent/CN103236596B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2172563Y (en) * | 1993-09-21 | 1994-07-20 | 聂彦将 | Grid-shielding lightning device |
| EP0805526A1 (en) * | 1996-04-30 | 1997-11-05 | Fluke Corporation | Shielded banana plug with double shroud and input receptacle |
| JPH10292155A (en) * | 1997-04-17 | 1998-11-04 | Nitto Denko Corp | Electroconductive adhesive tape and its production |
| CN2755913Y (en) * | 2004-12-10 | 2006-02-01 | 上海迪比特实业有限公司 | Electromagnetic shielding device |
| CN202094573U (en) * | 2011-05-25 | 2011-12-28 | 中国电力科学研究院 | Anti-corona ball for power transmission lines of high-altitude regions |
| CN102854345A (en) * | 2011-06-27 | 2013-01-02 | 苏州华电电气股份有限公司 | Shield cover of direct current high-voltage generator |
| CN203225358U (en) * | 2013-04-07 | 2013-10-02 | 国家电网公司 | A self-shielding grounding wire concentration apparatus used for extra-high-voltage tests |
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| Publication number | Publication date |
|---|---|
| CN103236596B (en) | 2015-03-11 |
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