CN103887052A - Bushing current transformers - Google Patents
Bushing current transformers Download PDFInfo
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- CN103887052A CN103887052A CN201410092253.6A CN201410092253A CN103887052A CN 103887052 A CN103887052 A CN 103887052A CN 201410092253 A CN201410092253 A CN 201410092253A CN 103887052 A CN103887052 A CN 103887052A
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- transformer
- bushing
- current transformer
- bushing current
- current transformers
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Abstract
The invention discloses bushing current transformers which are arranged outside a high-voltage side of a transformer in a sleeved mode and are of independent tubular structures. A current detecting module is arranged on the outer portion of each bush current transformer. The bushing current transformers further comprise bushes. The bushing current transformers are embedded into the bushes. The bushing current transformers and the bushes are of an integrated structure. The bushing current transformers are of an integrated current transformer bush structure which is simple, transformer assembling efficiency is improved, the efficiency and the accuracy of the intelligent transformer can be greatly improved, and the operation reliability of the transformer is improved. When fault happens, only whole CT bushes need to be replaced, and the transformer does not need to be disassembled. High-quality silicon steel sheets with high magnetic conductivity are selected for the bushing current transformers, and the high measuring accuracy and the low instrument security coefficient are achieved.
Description
Technical field
The present invention relates to a kind of current transformer, particularly a kind of bushing current transformer that is sheathed on high voltage side of transformer outside.Be applicable to current measurement, metering and the protection of Intelligent distribution transformer, Intelligent platform zone equipment.
Background technology
Current transformer is made up of closed iron core and winding; its umber of turn is little; in the circuit of the electric current that string is measured at needs; therefore it often has whole electric currents of circuit to flow through, and secondary winding turn ratio is more, is serially connected in measuring instrument and protection loop; current transformer is in the time of work; its secondary circuit is closed all the time, and therefore the impedance of measuring instrument and protection loop series coil is very little, and the operating state of current transformer approaches short circuit.
The high-tension current inductor (CT) of Intelligent distribution transformer is often arranged on oil tank of transformer inside or utilizes the seat that raises to install.This mounting means of tradition is unfavorable for installing, changing, and the whole space of corresponding transformer also increases greatly.In prior art, be arranged on the situation of oil tank of transformer inside as shown in body 4, current transformer 5 is arranged on oil tank of transformer inside (below case lid) by conventional mounting structure, utilizes to weld bolt below case lid and lamination wood is fixing, and CT line is drawn case lid by patchboard again.The method is not only installed difficulty, and, in the time that CT quality goes wrong, be difficult to change.
Summary of the invention
The problems referred to above that exist for current transformer in prior art, the invention provides a kind of bushing current transformer.
Technical scheme of the present invention is:
A kind of bushing current transformer, is characterized in that: described bushing current transformer is sheathed on the outside of high voltage side of transformer, is separate tubular structure, and the outside of each bushing current transformer carries current detection module.
As a further improvement on the present invention, this bushing current transformer also comprises sleeve pipe, and described bushing current transformer embeds inside pipe casing, the integral formula structure of bushing current transformer and sleeve pipe.
As a further improvement on the present invention, described high voltage side of transformer is provided with cluster parachute, and the quantity of cluster parachute is four, above three be little cluster parachute, bottom one is large cluster parachute.
As a further improvement on the present invention, described current detection module directly directly contacts with the outside of the sleeve pipe of bushing current transformer, and the analog current signal obtaining from bushing current transformer directly accesses current detection module.
As a further improvement on the present invention, described bushing current transformer adopts silicon steel sheet as permeability magnetic material.
The invention has the beneficial effects as follows:
A kind of bushing current transformer of the present invention adopts integral type current transformer sleeve structure, and this is simple in structure, has improved the efficiency of transformer assembling, can greatly improve efficiency and the accuracy of intelligent transformer, has improved transformer operational reliability.While breaking down, only needing, by CT sleeve pipe integral replacing, does not need to take apart transformer.Bushing current transformer has selected high-quality silicon steel sheet that magnetic permeability is higher as permeability magnetic material, has higher certainty of measurement and lower instrument safety coefficient.
Brief description of the drawings
Fig. 1 is the mounting structure figure of bushing current transformer of the present invention;
Fig. 2 is the horizontal sectional structure chart of Fig. 1 middle sleeve formula current transformer position;
Fig. 3 is longitudinal sectional structure chart of bushing current transformer of the present invention;
Fig. 4 is the scheme of installation of current transformer in prior art.
In figure: 1, cluster parachute; 2, current detection module; 3, bushing current transformer; 4, high voltage side of transformer.5, current transformer of the prior art.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
The structure of a kind of bushing current transformer of the present invention as shown in Figure 3, its mounting structure as shown in Figure 1, bushing current transformer 3 is sheathed on the outside of high voltage side of transformer 4, is separate tubular structure, and the outside of each bushing current transformer 3 carries current detection module 2.The horizontal sectional structure chart of Fig. 1 middle sleeve formula current transformer position as shown in Figure 2.
Bushing current transformer of the present invention also comprises sleeve pipe, and bushing current transformer 3 embeds inside pipe casing, the integral formula structure of bushing current transformer 3 and sleeve pipe.
High voltage side of transformer 4 is provided with cluster parachute 1, and the quantity of cluster parachute is four, above three be little cluster parachute, bottom one is large cluster parachute.
Bushing current transformer 3 adopts silicon steel sheet as permeability magnetic material.
A kind of bushing current transformer of the present invention is made each mutually separate sleeve pipe form on high-tension side intelligent transformer CT, and it carries current detection module.The analog current signal obtaining from cannula C T power taking, directly access current detection module, and module mails to terminal by wireless telecommunications (or having line terminals) by high voltage side current data.Adopt integral type current transformer sleeve structure easy, easy for installation, can greatly improve efficiency and the accuracy of intelligent transformer.CT and sleeve pipe are made a box entirety, and CT is embedded to inside pipe casing, and the life-span of CT and sleeve pipe will be equal to.As a side goes wrong CT sleeve pipe integral replacing, do not need to take apart transformer.
Bushing current transformer has selected high-quality silicon steel sheet that magnetic permeability is higher as permeability magnetic material, has higher certainty of measurement and lower instrument safety coefficient.Be applicable to current measurement, metering and the protection of Intelligent distribution transformer, Intelligent platform zone equipment.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention.All any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. a bushing current transformer, it is characterized in that: described bushing current transformer (3) is sheathed on the outside of high voltage side of transformer (4), for separate tubular structure, the outside of each bushing current transformer (3) carries current detection module (2).
2. a kind of bushing current transformer according to claim 1, is characterized in that: also comprise sleeve pipe, described bushing current transformer (3) embeds inside pipe casing, the integral formula structure of bushing current transformer (3) and sleeve pipe.
3. a kind of bushing current transformer according to claim 1 and 2, is characterized in that: described high voltage side of transformer (4) is provided with cluster parachute (1), and the quantity of cluster parachute is four, above three be little cluster parachute, bottom one is large cluster parachute.
4. a kind of bushing current transformer according to claim 1 and 2, it is characterized in that: described current detection module (2) directly directly contacts with the outside of the sleeve pipe of bushing current transformer (3), and the analog current signal obtaining from bushing type Current Mutual Inductance (3) device directly accesses current detection module (2).
5. a kind of bushing current transformer according to claim 1 and 2, is characterized in that: described bushing current transformer (3) adopts silicon steel sheet as permeability magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410092253.6A CN103887052A (en) | 2014-03-14 | 2014-03-14 | Bushing current transformers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410092253.6A CN103887052A (en) | 2014-03-14 | 2014-03-14 | Bushing current transformers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103887052A true CN103887052A (en) | 2014-06-25 |
Family
ID=50955901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410092253.6A Pending CN103887052A (en) | 2014-03-14 | 2014-03-14 | Bushing current transformers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103887052A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2453521Y (en) * | 2000-12-07 | 2001-10-10 | 南京供电局 | Sleeve insulator with current mutual inductor used for distribution transformer |
| JP2009206305A (en) * | 2008-02-28 | 2009-09-10 | Chugoku Electric Power Co Inc:The | Bushing current transformer |
| CN102360893A (en) * | 2011-07-07 | 2012-02-22 | 王伟坤 | Open/close type electronic bushing current transformer |
| CN202977116U (en) * | 2012-09-21 | 2013-06-05 | 沈阳全密封变压器股份有限公司 | Intelligent casing pipe |
| CN103558437A (en) * | 2013-10-22 | 2014-02-05 | 沈阳全密封变压器股份有限公司 | Smart bushing for electronic mutual inductor |
-
2014
- 2014-03-14 CN CN201410092253.6A patent/CN103887052A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2453521Y (en) * | 2000-12-07 | 2001-10-10 | 南京供电局 | Sleeve insulator with current mutual inductor used for distribution transformer |
| JP2009206305A (en) * | 2008-02-28 | 2009-09-10 | Chugoku Electric Power Co Inc:The | Bushing current transformer |
| CN102360893A (en) * | 2011-07-07 | 2012-02-22 | 王伟坤 | Open/close type electronic bushing current transformer |
| CN202977116U (en) * | 2012-09-21 | 2013-06-05 | 沈阳全密封变压器股份有限公司 | Intelligent casing pipe |
| CN103558437A (en) * | 2013-10-22 | 2014-02-05 | 沈阳全密封变压器股份有限公司 | Smart bushing for electronic mutual inductor |
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Application publication date: 20140625 |