CN202513025U - Extra-high-voltage current transformer with annular shielding box - Google Patents
Extra-high-voltage current transformer with annular shielding box Download PDFInfo
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- CN202513025U CN202513025U CN2012201004379U CN201220100437U CN202513025U CN 202513025 U CN202513025 U CN 202513025U CN 2012201004379 U CN2012201004379 U CN 2012201004379U CN 201220100437 U CN201220100437 U CN 201220100437U CN 202513025 U CN202513025 U CN 202513025U
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- secondary winding
- current transformer
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Abstract
The utility model relates to an extra-high-voltage current transformer with an annular shielding box. The extra-high-voltage current transformer structurally comprises an iron core and a secondary winding, the iron core is arranged in the annular shielding box, the secondary winding is wound outside the annular shielding box, a balancing winding is wound on an outer layer of the secondary winding, the annular shielding box is made of stainless steel or a nichrome material, and the secondary winding is wound through copper wires. The balancing winding is wound through enameled wires, the iron core is a ring-shaped iron core with the section to be rectangular, the balancing winding comprises four small windings evenly distributed on the secondary winding, the four small windings are wound in the same direction, tail ends of the small windings are mutually electrically connected, and tail ends of the small windings are also mutually electrically connected. Due to the fact that the balancing winding is in an open loop state, measurement errors of the secondary winding are not influenced, the secondary winding is wrapped in the balancing winding, and the influence of an external electromagnetic field is shielded.
Description
Technical field
The utility model relates to a kind of high-tension current inductor, especially the extra-high voltage current transformer of ultrahigh voltage power system use.
Background technology
At present, China is just greatly developing supergrid, electric pressure of every raising; The utilance of transmission of electric energy will improve 2-3 doubly, so supergrid helps the long-distance transmissions of electric energy, help reducing energy consumption; But the performance requirement to various components and parts greatly improves; For current transformer, magnetic field that the big electric current of superhigh pressure is produced and electric field can't adopt conventional error compensation mode to go to proofread and correct to the current transformer influence of measurement error.
Summary of the invention
The problem that the utility model will solve is to improve a kind of current transformer that is used for extra-high voltage transmission, can effectively remedy the magnetic field that produced because of the big electric current of superhigh pressure and electric field to the current transformer influence of measurement error.
The utility model is realized through following technical scheme:
The extra-high voltage current transformer of a kind of band shape of the utility model utility model shielding box; Comprise iron core and secondary winding; Said iron core places in the ring shielding box, and said secondary winding is to be wound on outside the ring shielding box, and the skin of said secondary winding is wound with the balance winding.
The further improvement of the utility model is: said ring shielding box adopts stainless steel or nichrome material, and said secondary winding adopts the copper conductor coiling, and said balance winding adopts the enamelled wire coiling.
The further improvement of the utility model is: said iron core is that the cross section is the annular core of rectangle.
The further improvement of the utility model is: said balance winding comprises that the little windings of four of being distributed on the secondary winding form, four little winding coilings in the same way, and each little winding head end is electrically connected each other, and tail end also is electrically connected each other.
Compared with prior art, the utility model is owing to adopt new structure, and the iron core that is about to high-tension current inductor is placed in the shielding box, thereby when operate as normal, has shielded the influence of external electromagnetic field to current transformer core.
Description of drawings
As shown in the figure: Fig. 1 be the utility model structural representation.
1: shielding box 2: iron core 3: secondary winding 4: the balance winding.
Embodiment
In order to deepen understanding to the utility model, will combine embodiment and accompanying drawing that the utility model is done below and further describe, this embodiment only is used to explain the utility model, the utility model protection range is not constituted to limit.
As shown in Figure 1; The extra-high voltage current transformer of a kind of band shape of the utility model shielding box, its structure comprise iron core 2 and secondary winding 3, and said iron core 2 places in the ring shielding box 1; Said secondary winding 3 is to be wound on outside the shielding box; The skin of said secondary winding 3 is wound with balance winding 4, and said shielding box 1 adopts stainless steel or nichrome material, and said secondary winding 3 adopts the copper conductor coiling.Said balance winding 4 adopts the enamelled wire coiling, and said iron core 2 is the annular core of rectangle for the cross section, and said balance winding 4 comprises four little windings compositions that are evenly distributed on the secondary winding 3; Four little winding coilings in the same way, and each little winding head end is electrically connected each other, and tail end also is electrically connected each other; Because balance winding 4 is in open loop situations; Therefore do not influence the measure error of secondary winding 3, secondary winding 3 is surrounded within the balance winding, has shielded the influence of external electromagnetic field.
The utility model is owing to adopt new structure, and the iron core that is about to high-tension current inductor is placed in the shielding box, thereby when operate as normal, has shielded the influence of external electromagnetic field to current transformer core.
Claims (4)
1. the extra-high voltage current transformer of a band shape shielding box; Comprise iron core (2) and secondary winding (3); It is characterized in that: said iron core (2) places in the ring shielding box (1); Said secondary winding (3) is to be wound on outside the said ring shielding box (1), and the skin of said secondary winding (3) is wound with balance winding (4).
2. the extra-high voltage current transformer of a kind of band shape shielding box according to claim 1; It is characterized in that: said ring shielding box (1) adopts stainless steel or nichrome material; Said secondary winding (3) adopts the copper conductor coiling, and said balance winding (4) adopts the enamelled wire coiling.
3. the extra-high voltage current transformer of a kind of band shape shielding box according to claim 1 is characterized in that: said iron core (2) is the annular core of rectangle for the cross section.
4. the extra-high voltage current transformer of a kind of band shape shielding box according to claim 1; It is characterized in that: said balance winding (4) comprises 4 little windings compositions that are distributed on the said secondary winding (3); 4 little winding coilings in the same way; And each little winding head end is electrically connected each other, and tail end also is electrically connected each other.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2012201004379U CN202513025U (en) | 2012-03-17 | 2012-03-17 | Extra-high-voltage current transformer with annular shielding box |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2012201004379U CN202513025U (en) | 2012-03-17 | 2012-03-17 | Extra-high-voltage current transformer with annular shielding box |
Publications (1)
Publication Number | Publication Date |
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CN202513025U true CN202513025U (en) | 2012-10-31 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN2012201004379U Expired - Fee Related CN202513025U (en) | 2012-03-17 | 2012-03-17 | Extra-high-voltage current transformer with annular shielding box |
Country Status (1)
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CN (1) | CN202513025U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106486275A (en) * | 2016-10-27 | 2017-03-08 | 成都启立辰智科技有限公司 | Antistatic magnetic is around transformator |
CN110346634A (en) * | 2019-08-06 | 2019-10-18 | 华中科技大学 | A kind of method and system improving iron-core coil measurement performance |
-
2012
- 2012-03-17 CN CN2012201004379U patent/CN202513025U/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106486275A (en) * | 2016-10-27 | 2017-03-08 | 成都启立辰智科技有限公司 | Antistatic magnetic is around transformator |
CN110346634A (en) * | 2019-08-06 | 2019-10-18 | 华中科技大学 | A kind of method and system improving iron-core coil measurement performance |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121031 Termination date: 20170317 |