CN2593331Y - High-voltage current mutual inductor - Google Patents
High-voltage current mutual inductor Download PDFInfo
- Publication number
- CN2593331Y CN2593331Y CN 03214797 CN03214797U CN2593331Y CN 2593331 Y CN2593331 Y CN 2593331Y CN 03214797 CN03214797 CN 03214797 CN 03214797 U CN03214797 U CN 03214797U CN 2593331 Y CN2593331 Y CN 2593331Y
- Authority
- CN
- China
- Prior art keywords
- secondary coil
- plate tube
- shielded
- length
- insulation column
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 15
- 238000009413 insulation Methods 0.000 claims description 19
- 239000012212 insulator Substances 0.000 abstract description 3
- 230000005684 electric field Effects 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
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Abstract
The utility model relates to a high-voltage current mutual inductor. The utility model comprises a base, an insulating support-column bushing, a secondary coil of which the exterior is wrapped with a metal shield, a wiring tube of the secondary coil, a high-voltage hood and a primary conductive rod. The utility model is characterized in that the wiring tube of the secondary coil in the insulating support-column bushing is shielded by two layers of metal shield tubes which have a short outer layer and a long inner layer and are staggered along the height direction; the two layers of metal shield tubes are fixed on the high-voltage hood through insulators. The metal shield tubes improve the axial potential distribution of the insulating support-column bushing and uniform the field strength inside and outside the insulating support-column bushing.
Description
Technical field
The utility model relates to a kind of high-tension current inductor, particularly the SF6 current transformer.
Technical background
High pressure is the secondary coil outlet fairlead of extra-high voltage current transformer and the non-uniform electric field between parts of high pressure particularly, can cause that the insulation column sleeve pipe is sliding to dodge and cause the accident.For addressing this problem, adopt between fairlead and high voltage component, to add to roll the electric capacity screen more.31 days October calendar year 2001 of State Intellectual Property Office disclosed application number 00261648.3 " a kind of Dry Type High Tension Current Transformer ' ' a kind of organization plan that adopts solid insulation three layer capacitances screens just is provided.This scenario-frame complexity, processing trouble, technological level requires high, and solid insulation has the tired effect of collection, and it is many unfavorable to bring to product.
Summary of the invention
The purpose of this utility model provides the sliding high-tension current inductor that dodges in a kind of surface simple in structure, easy to process, that can prevent the insulation column sleeve pipe.
The technical scheme that its technical problem that solves the utility model adopts is: high-tension current inductor comprises base, the insulation column sleeve pipe, the secondary coil of kalamein shielding, the secondary coil fairlead, EHT cage and primary conductive bar, its current transformer adopts inverted structure, the secondary coil of EHT cage and inside thereof and primary conductive bar are on top, by base and insulation column collar supports, be characterized in that the secondary coil fairlead in the insulation column sleeve pipe lacked by skin, internal layer length and the double layer of metal shielded-plate tube that staggers along short transverse, the insulation of inner layer metal shielded-plate tube is fixed on the lead-in wire, and the outer layer metal shielded-plate tube is fixed on the EHT cage.The metallic shield pipe has improved axial Potential distribution, the inside and outside field intensity of even insulation column sleeve pipe.
The inner layer metal shielding length is 0.4-0.8 with the ratio of secondary coil lead-out wire length of tube, and its radius is not more than SF with insulation column inside pipe casing electric field
6Disruptive field intensity be foundation.Outer layer metal shielded-plate tube length is 0.5-0.9 with the ratio of inner layer metal shielding length, and its radius is not more than SF with insulation column inside pipe casing electric field equally
6Disruptive field intensity be foundation.The metallic shield pipe is made with spinning process by aluminium alloy.
The beneficial effects of the utility model are: the structure of product becomes simple, and cost reduces, and the qualification rate of finished product improves, and electric property is reliable, has improved insulation column jacket exterior Electric Field Distribution, has prevented the sliding sudden strain of a muscle of insulation column jacket exterior.For electric power system provides more excellent product, make the electric power system can more reliable operation.
Description of drawings
Wherein: the secondary coil of the outer shielded-plate tube 6-of 1-base 2-insulation column sleeve pipe 3-internal layer shielded-plate tube 4-secondary coil fairlead 5-EHT cage 7-insulator 8-primary conductive bar 9-kalamein shielding.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail:
Insulation column sleeve pipe (2) is fixed on the base (1), supports EHT cage (6).The secondary coil (9) of kalamein shielding by disc insulator be fixed on the last conducting rod of EHT cage (6) pass the kalamein shielding secondary coil (9) window and be fixed on the EHT cage (6).Secondary coil fairlead (4) is fixed on the base (1).Internal layer shielded-plate tube (3) insulation is fixed on the fairlead (4), and outer shielded-plate tube (5) is fixed on the EHT cage.
Internal layer shielded-plate tube (3) and outer shielded-plate tube (5) be by the aluminium alloy preparative layer, the length L of internal layer shielded-plate tube (3)
1With the ratio of secondary coil fairlead length L be 0.6, the length of outer shielded-plate tube (5) and the length ratio of internal layer shielded-plate tube are that this two-layer shielded-plate tube of 0.55. cooperates and solves the inside and outside field intensity of sleeve pipe, prevent that inside pipe casing from puncturing and outside sliding the sudden strain of a muscle.
Claims (2)
1. high-tension current inductor, it comprises secondary coil, secondary coil fairlead, EHT cage and the primary conductive bar of base, insulation column sleeve pipe, kalamein shielding, current transformer adopts inverted structure, the secondary coil of the kalamein shielding in EHT cage and the cover and primary conductive bar are on top, by the insulation column collar supports on the base, it is characterized in that: the secondary coil fairlead in the insulation column sleeve pipe has outer short outward, and internal layer is long, the double layer of metal shielded-plate tube that staggers along short transverse.
2. by the described high-tension current inductor of claim 1, it is characterized in that: the length relation of said double layer of metal shielded-plate tube is that inner layer metal shielding length and secondary coil fairlead length ratio are 0.4-0.8; Outer layer metal shielded-plate tube length and inner layer metal shielded-plate tube length ratio are 0.5-0.8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03214797 CN2593331Y (en) | 2003-01-22 | 2003-01-22 | High-voltage current mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03214797 CN2593331Y (en) | 2003-01-22 | 2003-01-22 | High-voltage current mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2593331Y true CN2593331Y (en) | 2003-12-17 |
Family
ID=33754853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03214797 Expired - Fee Related CN2593331Y (en) | 2003-01-22 | 2003-01-22 | High-voltage current mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2593331Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100454453C (en) * | 2005-03-10 | 2009-01-21 | 上海Mwb互感器有限公司 | Low Power Electronic Current Transformer |
| CN102386603A (en) * | 2011-10-21 | 2012-03-21 | 国网电力科学研究院 | High-voltage direct-current cable terminal using shielding cylinder |
| CN103680906A (en) * | 2013-12-13 | 2014-03-26 | 中国西电电气股份有限公司 | Insulation structure of extra-high-voltage open type transformer substation current transformer |
| CN105229760A (en) * | 2013-04-29 | 2016-01-06 | Abb技术有限公司 | Hv instrument transformer |
| CN109358278A (en) * | 2018-12-07 | 2019-02-19 | 国网湖北省电力有限公司电力科学研究院 | The scene extra-high voltage SF6 exchanges Insulation Test reactor |
| CN111952051A (en) * | 2020-07-28 | 2020-11-17 | 国网河南省电力公司电力科学研究院 | An Active Defense Internal Discharge Sulfur Hexafluoride Current Transformer |
-
2003
- 2003-01-22 CN CN 03214797 patent/CN2593331Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100454453C (en) * | 2005-03-10 | 2009-01-21 | 上海Mwb互感器有限公司 | Low Power Electronic Current Transformer |
| CN102386603A (en) * | 2011-10-21 | 2012-03-21 | 国网电力科学研究院 | High-voltage direct-current cable terminal using shielding cylinder |
| CN102386603B (en) * | 2011-10-21 | 2014-02-05 | 国网电力科学研究院 | High-voltage direct-current cable terminal using shielding cylinder |
| CN105229760A (en) * | 2013-04-29 | 2016-01-06 | Abb技术有限公司 | Hv instrument transformer |
| CN105229760B (en) * | 2013-04-29 | 2018-07-10 | Abb瑞士股份有限公司 | HV instrument transformers |
| CN103680906A (en) * | 2013-12-13 | 2014-03-26 | 中国西电电气股份有限公司 | Insulation structure of extra-high-voltage open type transformer substation current transformer |
| CN109358278A (en) * | 2018-12-07 | 2019-02-19 | 国网湖北省电力有限公司电力科学研究院 | The scene extra-high voltage SF6 exchanges Insulation Test reactor |
| CN111952051A (en) * | 2020-07-28 | 2020-11-17 | 国网河南省电力公司电力科学研究院 | An Active Defense Internal Discharge Sulfur Hexafluoride Current Transformer |
| CN111952051B (en) * | 2020-07-28 | 2022-04-22 | 国网河南省电力公司电力科学研究院 | Active defense internal discharge sulfur hexafluoride current transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20031217 Termination date: 20120122 |