CN106783067B - A kind of coil shunting transformer - Google Patents
A kind of coil shunting transformer Download PDFInfo
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- CN106783067B CN106783067B CN201510809385.0A CN201510809385A CN106783067B CN 106783067 B CN106783067 B CN 106783067B CN 201510809385 A CN201510809385 A CN 201510809385A CN 106783067 B CN106783067 B CN 106783067B
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- transformer
- breaker
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- coil
- low pressure
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Abstract
The present invention relates to a kind of coils to shunt transformer, the transformer includes: an at least phase high-voltage winding and an at least phase low pressure winding, low pressure winding described in every phase includes the coil group of multiple parallel connections, and each coil group includes the subcoil and sub- breaker being connected in series；The transformer further includes the controller for controlling each sub- breaker, and the controller is connect with each sub- breaker, and is controlled all sub- breakers while being opened and closed.The present invention is by way of being arranged to multiple coils from parallel connection of coils for each group of winding in low pressure winding, an and breaker of connecting on each coil, the inside that breaker is integrated in transformer is realized, and significantly reduces the overall cost of transformer and breaker.
Description
Technical field
The present invention relates to transformer technology fields, shunt transformer more particularly, to a kind of coil.
Background technique
Transformer is one of power transmission and transforming equipment important in electric system, is in hinge status, fortune in the power system
Capable security reliability is directly related to the safety of electric system.Breaker is indispensable in substation's high voltage distribution installation
Element quickly cuts off fault point with it when device fails, guarantees the normal operation of power grid.Generally, transformer
High-pressure side and low-pressure side will be connect with breaker, on the transformer when trip, downstream fault, can be effectively isolated transformation
Device prevents harm of the transformer by failure.
Currently, the high-power transformer of voltage levels (10kV or more), in the fabrication process, winding mostly uses more
The mode of a line cake combination.By taking high current coil as an example, it be not as made of a conducting wire coiling, but use it is several very
It forms and (refers to " transformer coil manufacture ") to tens of identical conductor in parallel.In addition, the electric current by coil is bigger, manufacture
Difficulty is higher.
Generally, the drop-out current of breaker is more than 31.5kA, and operating current is more than 4000A, and heat dissipation and arc extinguishing are difficult,
Manufacturing cost is very high, especially common medium voltage breaker.High current generator outlet breaker GCB only has a small number of manufacturers ability
Production, it is at high price.In order to reduce transformer low voltage breaker cost, the control of part designing technique code requirement transformer capacity
Cause number transformer increase, transformation level more, power transformation damage to avoid using the medium voltage breaker of high current in a certain range
Consumption is big.
Siemens Company was once used in parallel by multiple low capacity breakers (being set as N number of) in transformer outlet, and low capacity is disconnected
The rated current of road device can be the 1/N of single large capcity breaker rated current, but electric current of make-and-break still requires that and breaks with large capacity
Road device is identical, and therefore, overall cost expense is not greatly reduced.
A kind of Modularization vacuum circuit breaker that latest domestic is succeeded in developing can be by an inlet wire using self coupling reactor
It is divided into two equal outlets of size of current, then is equipped with two Modularization vacuum circuit breakers, it can be by the electric current of make-and-break of breaker
It is reduced to original half.But if the electric current of make-and-break of breaker is reduced to original part even lower, need
Multistage multiple self coupling reactors are used, structure is complicated, and cost is also higher.
At present apparently, when the electric current of transformer is very big, perhaps increase the quantity or installation large capacity open circuit of transformer
The overall cost expense of device (and radiator), transformer and its breaker is relatively very high.Even if being used in transformer outlet disconnected
Road device is in parallel, it is also desirable to guarantee that the electric current of make-and-break of shunt trip breaker is equal with the electric current of make-and-break of single breaker, or configuration is more
The overall cost expense of the multiple mutual reactors of grade, transformer and breaker is not greatly reduced.
Summary of the invention
Based on the above issues, the present invention proposes that a kind of coil shunts transformer, by by each group in low pressure winding around
Group is arranged to the form of multiple coils from parallel connection of coils, and a breaker of connecting on each coil, realizes and integrates breaker
In the inside of transformer, and significantly reduce the cost of transformer.
For achieving the above object, the present invention provides a kind of coil shunting transformer, which is characterized in that the transformer
Include:
An at least phase high-voltage winding and at least a phase low pressure winding, low pressure winding described in every phase include the coil of multiple parallel connections
Group, each coil group include the subcoil and sub- breaker being connected in series；
The transformer further includes the controller for controlling each sub- breaker, the controller and each described
Sub- breaker connection, and control all sub- breakers while being opened and closed.
Wherein, form an output line after multiple coil groups of low pressure winding described in every phase are in parallel, low pressure described in each phase around
Output line between group connects into Y type or triangular form output.
Wherein, the structure of the subcoil of each coil group is identical.
Wherein, the material of the subcoil is identical.
Wherein, the sub- breaker of each coil group is identical.
Wherein, the sub- breaker of each coil group is located on the outlet line of the subcoil of corresponding coil group.
Coil of the invention shunts transformer, miniaturization breaker is integrated in inside transformer, by using multiple small
Capacity breaker replaces large capcity breaker, significantly reduces the manufacturing cost of breaker, to reduce transformer and break
The overall cost expense of road device.In addition, transformer of the invention can be based on the existing manufacturing process system of transformer coil
It makes, it is easy to accomplish, and reduce the manufacture difficulty of transformer coil.
Detailed description of the invention
The features and advantages of the present invention will be more clearly understood by referring to the accompanying drawings, and attached drawing is schematically without that should manage
Solution is carries out any restrictions to the present invention, in the accompanying drawings:
The coil that Fig. 1 shows first embodiment of the invention shunts the structural schematic diagram of transformer；
Fig. 2 shows the structural schematic diagrams that second embodiment of the present invention coil shunts transformer.
Specific embodiment
Below in conjunction with attached drawing, embodiments of the present invention is described in detail.
Coil of the invention shunts transformer and specifically includes: an at least phase high-voltage winding and at least a phase low pressure winding, often
Phase low pressure winding includes the coil group of multiple parallel connections, and each coil group includes the subcoil and sub- breaker being connected in series；
In addition, transformer further includes the controller for controlling every sub- breaker, controller and every sub- breaker connect
It connects, and controls all sub- breakers while being opened and closed.
In above-mentioned transformer, it is assumed that the specified phase current of transformer low voltage winding side is I2N, the coil that is often in parallel
Number is N, then, the relevant parameter (such as wire radius) of transformer coil is I according to rated current2N/ N is designed and selects
It selects.
In addition, the parameters such as material, wire radius, the number of turns of each coil of transformer are all the same, so that it is guaranteed that each coil passes through
Size of current it is equal.
In addition, each mutually each winding coil around to identical, the output current direction to ensure each path of winding is identical.
Selection for sub- breaker, since the coil group number being often in parallel is N, then the breaker number being often in parallel
It also is N.When selecting sub- breaker, the rated current of sub- breaker is I according to rated current2N/ N is designed and selects, and son is disconnected
The specified electric current of make-and-break of road device is also designed and selects according to the 1/N of former specified electric current of make-and-break.
In the embodiment of the present invention, sub- breaker can be integrated in the miniaturization breaker of inside transformer.All sons
The model of breaker is identical, so that it is guaranteed that the characteristics such as actuation time of each sub- breaker are identical.Due to the power on/off of sub- breaker
Stream is reduced to original 1/N, therefore, when choosing sub- breaker, preferentially uses on-off capacity smaller but reliable performance, volume
Small, free of contamination vacuum circuit breaker, to be conducive to for sub- breaker being integrated into transformer.
The installation site of breaker can be serially connected in after the outlet of each subcoil of low pressure winding.Every phase winding
A plurality of inlet wire and outlet are simultaneously unified into an inlet wire and outlet, then connect by the specific connection type (Y type or triangular form) of transformer
After export.
In addition, in transformer of the invention, it is additionally provided with the controller being connected with all sub- breakers, the controller is to every
A sub- breaker is simultaneously emitted by action signal, to ensure to have the breaker of same action time can be opened and closed simultaneously.
Coil provided by the invention shunts transformer, can realize the output of high current, and base in low pressure winding side
In the existing manufacturing process of transformer coil, it is easy to accomplish, reduce the manufacture difficulty of transformer coil.In addition, by above-mentioned
Miniaturization breaker can be integrated in inside transformer, replace existing great Rong by using multiple low capacity breakers by setting
Breaker is measured, the manufacturing cost of breaker is significantly reduced, to reduce the overall cost expense of transformer and breaker.
Transformer is shunted to coil of the invention below by way of specific embodiment to be described in detail.
The coil that Fig. 1 shows the first embodiment of the present invention shunts the structural schematic diagram of transformer.
Referring to Fig.1, it is single-phase transformer that the coil of the present embodiment, which shunts transformer, comprising: a phase high-voltage winding 10 and one
Phase low pressure winding 20, low pressure winding 20 include the coil group 30 of multiple parallel connections, and each coil group 30 includes the sub-line being connected in series
Circle and sub- breaker.
Above-mentioned transformer further includes the controller 70 for controlling every sub- breaker, controller 70 and every sub- breaker
Connection, and control all sub- breakers while being opened and closed.
As shown in Figure 1, N1、N2、N3... it is each subcoil the number of turns respectively.The parameters such as material, the wire radius of each subcoil
It is identical, around to identical, and equal turn numbers (N1=N2=N3...), direction phase equal with the size of current for guaranteeing that each coil flows through
Together.
S1、S2、S3... it is the sub- breaker of each coil group respectively.The model of each breaker is identical, it is ensured that each son open circuit
The characteristics such as the actuation time of device are identical.Sub- breaker is serially connected in after the outlet of subcoil, and the outlet of each sub- breaker is connected in parallel on
It exports afterwards together.
In the present embodiment, controller 70 is connected to every sub- breaker S1、S2、S3..., due to the son open circuit of the present embodiment
Device must work at the same time the performance that can be only achieved the breaker of low pressure winding of traditional transformer, therefore, the controller of this implementation
The opening and closing of all sub- breakers of 70 controls.
In the present embodiment, unaccounted parts other for single-phase transformer winding and iron core, shell etc. do not do specific limit
Calmly, the technical characteristics such as the winding and iron core of existing single-phase transformer, shell are suitable for the present invention.
Fig. 2 shows the structural schematic diagrams that second embodiment of the present invention coil shunts transformer.
In the present embodiment, it includes multiphase high-voltage winding 40 and multiphase low pressure winding 50 that coil, which shunts transformer, every mutually low
Pressing winding 50 includes multiple coil groups 60, and each coil group includes a subcoil and a sub- breaker.
As shown in Fig. 2, the transformer in the present embodiment is three-phase transformer, for each phase of low pressure winding 50, knot
Structure is all identical as the low pressure winding of first embodiment, and an output is formed after multiple coil groups parallel connection of every phase low pressure winding
Line, the output line between each phase low pressure winding connect into Y type or triangular form output.
In the present embodiment, controller 70 is connected to every sub- breaker S1、S2、S3..., due to the son open circuit of the present embodiment
Device must work at the same time the performance that can be only achieved the breaker of low pressure winding of traditional transformer, therefore, the controller of this implementation
The opening and closing of all sub- breakers of 70 controls.
In the present embodiment, unaccounted parts other for polyphase transformer winding and iron core, shell etc. do not do specific limit
Calmly, the technical characteristics such as the winding and iron core of existing polyphase transformer, shell are suitable for the present invention.
The above specific embodiment is only to illustrate specific implementation technical solution of the invention rather than limits, although referring to reality
Example describes the invention in detail, it will be understood by those of skill in the art that can carry out to technical solution of the present invention
Modification or equivalent replacement should all cover in right of the invention without departing from the spirit and scope of the technical solution of the present invention
In claimed range.
Claims (6)
1. a kind of coil shunts transformer, which is characterized in that the transformer includes:
An at least phase high-voltage winding and at least a phase low pressure winding, low pressure winding described in every phase include the coil group of multiple parallel connections,
Each coil group includes the subcoil and sub- breaker being connected in series；
The transformer further includes the controller for controlling each sub- breaker, and the controller and each son are disconnected
The connection of road device, and control all sub- breakers while being opened and closed.
2. transformer according to claim 1, which is characterized in that if the transformer includes the low pressure winding of three-phase, often
An output line is formed after multiple coil groups of low pressure winding described in phase are in parallel；Output line between low pressure winding described in each phase connects
It is connected into Y type or triangular form output.
3. transformer according to claim 1, which is characterized in that the structure of the subcoil of each coil group is identical.
4. transformer according to claim 1, which is characterized in that the material of the subcoil is identical.
5. transformer according to claim 1, which is characterized in that the sub- breaker of each coil group is identical.
6. transformer according to claim 1, which is characterized in that the sub- breaker of each coil group is located at corresponding
On the outlet line of the subcoil of coil group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510809385.0A CN106783067B (en) | 2015-11-19 | 2015-11-19 | A kind of coil shunting transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510809385.0A CN106783067B (en) | 2015-11-19 | 2015-11-19 | A kind of coil shunting transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106783067A CN106783067A (en) | 2017-05-31 |
| CN106783067B true CN106783067B (en) | 2019-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510809385.0A Active CN106783067B (en) | 2015-11-19 | 2015-11-19 | A kind of coil shunting transformer |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112652441B (en) * | 2020-12-31 | 2023-11-28 | 河南铜牛变压器有限公司 | Maintenance-free high-efficiency energy-saving dry type electric furnace transformer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101013853A (en) * | 2005-12-30 | 2007-08-08 | 内蒙古亿人环保科技有限公司 | Finite differential converter method of triangular function and implementation apparatus thereof |
| CN101352782A (en) * | 2008-09-05 | 2009-01-28 | 深圳市鸿栢科技实业有限公司 | Stud welder and stud welder high-frequency transformator |
| CN101496451A (en) * | 2006-07-28 | 2009-07-29 | 松下电器产业株式会社 | Discharge lamp operating system |
| CN101764421A (en) * | 2010-01-15 | 2010-06-30 | 中国科学院电工研究所 | Equalizing equipment for battery units of electric automobile |
| CN101958180A (en) * | 2009-07-15 | 2011-01-26 | 陈进祥 | Transformation device |
-
2015
- 2015-11-19 CN CN201510809385.0A patent/CN106783067B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101013853A (en) * | 2005-12-30 | 2007-08-08 | 内蒙古亿人环保科技有限公司 | Finite differential converter method of triangular function and implementation apparatus thereof |
| CN101496451A (en) * | 2006-07-28 | 2009-07-29 | 松下电器产业株式会社 | Discharge lamp operating system |
| CN101352782A (en) * | 2008-09-05 | 2009-01-28 | 深圳市鸿栢科技实业有限公司 | Stud welder and stud welder high-frequency transformator |
| CN101958180A (en) * | 2009-07-15 | 2011-01-26 | 陈进祥 | Transformation device |
| CN101764421A (en) * | 2010-01-15 | 2010-06-30 | 中国科学院电工研究所 | Equalizing equipment for battery units of electric automobile |
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| Publication number | Publication date |
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| CN106783067A (en) | 2017-05-31 |
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