CN113421753B - Transformer convenient to promote single capacity - Google Patents
Transformer convenient to promote single capacity Download PDFInfo
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- CN113421753B CN113421753B CN202110741436.6A CN202110741436A CN113421753B CN 113421753 B CN113421753 B CN 113421753B CN 202110741436 A CN202110741436 A CN 202110741436A CN 113421753 B CN113421753 B CN 113421753B
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- voltage regulating
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/321—Insulating of coils, windings, or parts thereof using a fluid for insulating purposes only
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention provides a transformer convenient for improving the capacity of a single transformer, which belongs to the technical field of transformation equipment and comprises a box body, an iron core, a low-voltage winding, a high-voltage winding and at least two voltage regulating loops; the iron core is vertically arranged in the box body; the low-voltage winding is wound on the outer peripheral wall of the iron core; the high-voltage winding is wound on the outer peripheral wall of the low-voltage winding; the number of the high-voltage windings is at least two, and the two high-voltage windings are arranged along the axial direction of the iron core; at least two voltage regulating loops are respectively connected in series with the corresponding high-voltage windings; the capacity of the transformer can be improved by one time or multiple times through the matching of the iron core, the low-voltage winding, the at least two high-voltage windings and the at least two voltage regulating loops; compare in using two transformers, this application area is littleer, and the installation effectiveness is higher.
Description
Technical Field
The invention belongs to the technical field of transformation equipment, and particularly relates to a transformer convenient for improving the capacity of a single transformer.
Background
The transformer is a device for changing alternating voltage by utilizing the principle of electromagnetic induction, and main components are a primary coil, a secondary coil and an iron core; the transformer with the same voltage grade has larger corresponding current when the capacity is larger; if the bearing range of the three-phase on-load tap changer is exceeded, at least two small-capacity transformers need to be adopted for supplying power, but the two small-capacity transformers need to be installed respectively, so that the installation time can be prolonged, and the installation efficiency is reduced.
Disclosure of Invention
The invention aims to provide a transformer convenient for increasing the capacity of a single transformer, and aims to solve the technical problem of low installation efficiency caused by the fact that two transformers need to be installed respectively in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: there is provided a transformer facilitating capacity increase of a single unit, comprising:
a box body;
the iron core is vertically arranged in the box body;
the low-voltage winding is wound on the outer peripheral wall of the iron core;
the high-voltage winding is wound on the outer peripheral wall of the low-voltage winding; the number of the high-voltage windings is at least two, and the two high-voltage windings are arranged along the axial direction of the iron core; and
and the at least two voltage regulating loops are respectively connected with the corresponding high-voltage windings in series.
In one possible implementation, the winding directions of the two high-voltage windings are opposite.
In some embodiments, the number of turns and the length of the two high voltage windings are the same.
In a possible implementation manner, an impedance loop is arranged between the two voltage regulating loops.
In one possible implementation manner, the voltage regulating loop comprises a voltage regulating winding and a voltage regulating tap switch, and the voltage regulating winding is wound on the peripheral wall of the high-voltage winding; the voltage regulating tap switch is connected with the high-voltage winding and the voltage regulating winding in series.
In some embodiments, the transformer further includes a switch motor having a drive terminal adapted to connect to both of the tap changers.
In some embodiments, the direction of winding of both said regulating windings is the same.
In some embodiments, the outlet terminal of the tap changer is routed to a high voltage neutral bushing via a cable.
In a possible implementation manner, insulating oil is arranged in the box body, and the iron core, the low-voltage winding, the high-voltage winding and the voltage regulating loop are all soaked in the insulating oil.
The transformer convenient for improving the capacity of a single unit has the advantages that: compared with the prior art, the capacity of the transformer can be increased by one time or more times through the matching of the iron core, the low-voltage winding, the at least two high-voltage windings and the at least two voltage regulating loops; compare in using two transformers, this application area is littleer, and the installation effectiveness is higher.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a transformer convenient for increasing the capacity of a single unit according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a coil winding portion of a transformer for facilitating capacity increase of a single unit according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a connection manner of coil windings of a transformer for facilitating capacity increase of a single transformer according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a housing portion of a transformer for facilitating capacity boosting per unit provided by an embodiment of the present invention;
fig. 5 is a schematic diagram of an electric mechanism portion of a transformer for facilitating capacity increase of a single transformer according to an embodiment of the present invention.
In the figure: 1. a box body; 2. an iron core; 3. a low voltage winding; 4. a high voltage winding; 5. a voltage regulation loop; 51. a voltage regulating winding; 52. a voltage regulating tap switch; 6. an electric mechanism; 61. a housing; 62. a first transmission shaft; 63. a second transmission shaft; 64. a transmission assembly; 641. a drive housing; 642. a first bevel gear; 643. a second bevel gear; 65. and a third transmission shaft.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 5, a transformer for increasing the capacity of a single unit according to the present invention will be described. A transformer convenient for improving the capacity of a single unit comprises a box body 1, an iron core 2, a low-voltage winding 3, a high-voltage winding 4 and a voltage regulating loop 5; the iron core 2 is vertically arranged in the box body 1; the low-voltage winding 3 is wound on the outer peripheral wall of the iron core 2; the high-voltage winding 4 is wound on the outer peripheral wall of the low-voltage winding 3; at least two high-voltage windings 4 are arranged, and the two high-voltage windings 4 are arranged along the axial direction of the iron core 2; at least two voltage regulating loops 5 are provided, and the two voltage regulating loops 5 are respectively connected with the corresponding high-voltage windings 4 in series.
The transformer convenient for improving the capacity of a single transformer provided by the invention has the beneficial effects that: compared with the prior art, the capacity of the transformer can be improved by one time or multiple times through the matching of the iron core 2, the low-voltage winding 3, the at least two high-voltage windings 4 and the at least two voltage regulating loops 5; compared with the two small-capacity transformers, the transformer has the advantages that the occupied area is smaller, and the installation efficiency is higher; when the transformer is maintained, two small-capacity transformers do not need to be maintained, and the workload of operation and maintenance can be reduced.
In some embodiments, the winding directions of the two high voltage windings 4 are opposite, and the number of turns and the length of the two high voltage windings 4 are the same; an impedance loop is arranged between the two voltage regulating loops 5; the two voltage regulating loops 5 have high loop impedance, and when the two voltage regulating tap switches 52 are asynchronous, the current difference value in the two voltage regulating loops 5 can be within 2%; the two high-voltage windings 4 are axially arranged and are both connected in series in the corresponding voltage regulating loop 5, so that the coupling coefficient between the two high-voltage windings 4 is small, the impedance is large, and the current between the loops can be balanced.
In some embodiments, as shown in fig. 1 to 3, the voltage regulating circuit 5 includes a voltage regulating winding 51 and a voltage regulating tap switch 52, the voltage regulating winding 51 being wound around the outer peripheral wall of the high voltage winding 4; the voltage regulating tap switch 52 is connected with the high-voltage winding 4 and the voltage regulating winding 51 in series; the voltage can be controlled by the voltage regulating tap switch 52 to facilitate the voltage regulating operation.
Specifically, the tap changer 52 may be an on-load tap changer 52, or may be an off-load tap changer 52.
Specifically, as shown in fig. 1, 4 and 5, the transformer further comprises a switching electric machine 6, the switching electric machine 6 having a drive terminal adapted to be connected to two tap changers 52; the two voltage regulation loops 5 can be simultaneously started through the driving end, so that the currents in the two loops are the same.
Specifically, as shown in fig. 4 and 5, the switching electric mechanism 6 includes a housing 61, a transmission motor, a first transmission shaft 62, and a second transmission shaft 63; the shell 61 is connected with the box body 1, and the transmission motor is arranged in the shell 61; one end of the first transmission shaft 62 is connected with the power output end of the transmission motor, and the other end is connected with the second transmission shaft 63; two ends of the second transmission shaft 63 are respectively in rotary connection with tap switches in the two voltage regulating loops 5; the first transmission shaft 62 is perpendicular to the second transmission shaft 63, and a transmission assembly 64 is arranged between the first transmission shaft 62 and the second transmission shaft 63; the first transmission shaft 62 is driven to rotate by the transmission motor, the first transmission shaft 62 transmits power to the second transmission shaft 63, and two ends of the second transmission shaft 63 are respectively connected with corresponding tap switches, so that the two pressure regulating loops 5 can be synchronously started.
Specifically, as shown in fig. 4 and 5, the electric switching mechanism 6 further includes a third transmission shaft 65, the first transmission shaft 62 and the second transmission shaft 63 are disposed at the top of the case 1, and the housing 61 is disposed at one side of the case 1; one end of the third transmission shaft 65 is connected with the output end of the transmission motor, and the other end is connected with the first transmission shaft 62; the third transmission shaft 65 is vertically arranged and is vertical to the first transmission shaft 62, and a transmission assembly 64 is also arranged at the joint of the first transmission shaft 62 and the third transmission shaft 65; the first transmission shaft 62 and the second transmission shaft 63 are rotatably connected with the box body 1 and are relatively fixed with the box body 1; the third transmission shaft 65 is arranged in the vertical direction; the shell 61 is arranged on one side of the box body 1, and the transmission motor is arranged in the shell 61; the third transmission shaft 65 is driven to rotate by the transmission motor, the third transmission shaft 65 can transmit power to the first transmission shaft 62, and then the first transmission shaft 62 transmits the power to the second transmission shaft 63, so that the two voltage-regulating tap-changers 52 are driven to be started or closed conveniently.
Specifically, as shown in fig. 4 and 5, the transmission assembly 64 includes a transmission housing 641, a first bevel gear 642, and a second bevel gear 643; the first transmission shaft 62 and the third transmission shaft 65 are connected by a first bevel gear 642 and a second bevel gear 643, and the power of the third transmission shaft 65 can be transmitted to the first transmission shaft 62; the first transmission shaft 62 and the second transmission shaft 63 are connected through a first bevel gear 642 and a second bevel gear 643, and the power of the first transmission shaft 62 can be transmitted to the second transmission shaft 63; the transmission housing 641 is fixed on the top of the box 1, one end of the first transmission shaft 62 is fixedly connected with the first bevel gear 642, and the second bevel gear 643 is connected with the middle of the second transmission shaft 63, so that during the rotation of the first transmission shaft 62, power can be transmitted to the second transmission shaft 63 through the first bevel gear 642 and the second bevel gear 643, thereby facilitating the control of the opening and closing of the first on-load tap-changer 52 and the second on-load tap-changer 52.
Specifically, the third transmission shaft 65 is in key connection with the power output end of the transmission motor; the third transmission shaft 65 is in key connection with the transmission motor, so that when the third transmission shaft 65 is installed, the third transmission shaft 65 and the transmission motor can be installed only by being connected with the power output end of the driving motor through the third transmission shaft 65 in a plugging mode.
Specifically, the two voltage regulating windings 51 are wound in the same direction and led to the high-voltage neutral point bushing through a cable;
in some embodiments, the box 1 is filled with insulating oil, and the iron core 2, the low-voltage winding 3, the high-voltage winding 4 and the voltage regulating loop 5 are all immersed in the insulating oil; on one hand, the normal use of the iron core 2, the low-voltage winding 3, the high-voltage winding 4 and the voltage regulating loop 5 can be ensured; on the other hand, the amount of insulating oil used in the present application is less compared to two transformers.
Specifically, the voltage regulating tap switch 52 is a three-phase on-load tap switch, and the voltage regulating tap switch 52 is disposed on the phase a side or the phase C side in the box body 1, so that the space occupied by the voltage regulating tap switch 52 can be reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. A transformer convenient to promote individual capacity, characterized by, includes:
a box body;
the iron core is vertically arranged in the box body;
the low-voltage winding is wound on the outer peripheral wall of the iron core;
a high voltage winding wound around an outer peripheral wall of the low voltage winding; the number of the high-voltage windings is at least two, and the two high-voltage windings are arranged along the axial direction of the iron core; and
the two voltage regulating loops are respectively connected with the corresponding high-voltage windings in series;
the voltage regulating loop comprises a voltage regulating winding and a voltage regulating tap switch, and the voltage regulating winding is wound on the outer peripheral wall of the high-voltage winding; the high-voltage winding and the voltage regulating winding are connected in series through the voltage regulating tap switch;
the two high-voltage windings are respectively connected with the corresponding voltage regulating windings in series to form two branches, and the two branches are connected in parallel;
the winding directions of the two high-voltage windings are opposite; the two high voltage windings are of the same number of turns and length.
2. The transformer for increasing the capacity of a single unit as claimed in claim 1, wherein an impedance loop is provided between the two voltage regulating loops.
3. The transformer for facilitating capacity boost of a unit according to claim 1, further comprising a switching motor having a drive terminal adapted to connect to two of said tap changers.
4. The transformer for facilitating individual capacity boost of claim 1 wherein the winding directions of both said regulating windings are the same.
5. The transformer for facilitating individual capacity boosting of claim 1 wherein the outlet terminals of said tap changers are routed to a high voltage neutral bushing by cables.
6. The transformer convenient for increasing the capacity of a single unit as claimed in any one of claims 1 to 5, wherein an insulating oil is arranged in the box body, and the iron core, the low voltage winding, the high voltage winding and the voltage regulating loop are all soaked in the insulating oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110741436.6A CN113421753B (en) | 2021-06-30 | 2021-06-30 | Transformer convenient to promote single capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110741436.6A CN113421753B (en) | 2021-06-30 | 2021-06-30 | Transformer convenient to promote single capacity |
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| Publication Number | Publication Date |
|---|---|
| CN113421753A CN113421753A (en) | 2021-09-21 |
| CN113421753B true CN113421753B (en) | 2022-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110741436.6A Active CN113421753B (en) | 2021-06-30 | 2021-06-30 | Transformer convenient to promote single capacity |
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| Country | Link |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606445A (en) * | 2013-12-04 | 2014-02-26 | 正泰电气股份有限公司 | Method for effectively reducing current passing through on-load tap-changer of transformers |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3126972C2 (en) * | 1981-07-08 | 1985-05-09 | Transformatoren Union Ag, 7000 Stuttgart | Circuit arrangement for the windings of a double-deck transformer |
| CN202067643U (en) * | 2010-12-30 | 2011-12-07 | 天威云南变压器股份有限公司 | Single-phase traction transformer |
| CN203456262U (en) * | 2013-09-23 | 2014-02-26 | 保定保菱变压器有限公司 | High-pressure roughly/finely-tuned on-load voltage-regulating power transformer |
| CN107564716A (en) * | 2016-06-30 | 2018-01-09 | 广州西门子变压器有限公司 | The adjustable power transformer of voltage |
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2021
- 2021-06-30 CN CN202110741436.6A patent/CN113421753B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606445A (en) * | 2013-12-04 | 2014-02-26 | 正泰电气股份有限公司 | Method for effectively reducing current passing through on-load tap-changer of transformers |
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| CN113421753A (en) | 2021-09-21 |
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