CN202513025U - Extra-high-voltage current transformer with annular shielding box - Google Patents

Extra-high-voltage current transformer with annular shielding box Download PDF

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Publication number
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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CN
China
Prior art keywords
shielding box
winding
secondary winding
current transformer
extra
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
Application number
CN2012201004379U
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Chinese (zh)
Inventor
张孝俊
胡丰明
刘名才
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ANHUI INSTRUMENT TRANSFORMER Co Ltd
Original Assignee
ANHUI INSTRUMENT TRANSFORMER Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
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Application filed by ANHUI INSTRUMENT TRANSFORMER Co Ltd filed Critical ANHUI INSTRUMENT TRANSFORMER Co Ltd
Priority to CN2012201004379U priority Critical patent/CN202513025U/en
Application granted granted Critical
Publication of CN202513025U publication Critical patent/CN202513025U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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

A kind of extra-high voltage current transformer of band shape shielding box
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.
CN2012201004379U 2012-03-17 2012-03-17 Extra-high-voltage current transformer with annular shielding box Expired - Fee Related CN202513025U (en)

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
CN202513025U true CN202513025U (en) 2012-10-31

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012201004379U Expired - Fee Related CN202513025U (en) 2012-03-17 2012-03-17 Extra-high-voltage current transformer with annular shielding box

Country Status (1)

Country Link
CN (1) CN202513025U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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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