CN107424806A - The device and method of high-current low-voltage side twin voltage switching can be realized - Google Patents
The device and method of high-current low-voltage side twin voltage switching can be realized Download PDFInfo
- Publication number
- CN107424806A CN107424806A CN201710767618.4A CN201710767618A CN107424806A CN 107424806 A CN107424806 A CN 107424806A CN 201710767618 A CN201710767618 A CN 201710767618A CN 107424806 A CN107424806 A CN 107424806A
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- contact
- low
- voltage
- transformer
- twin
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
-
- 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
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
-
- 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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention provides the device and method that can realize the twin voltage switching of high-current low-voltage side.Described device includes at least one first contact, at least one second contact, at least one 3rd contact and at least one gearshift piece, described gearshift piece connects by the first contact and the connection of the second contact or by the first contact and the 3rd contact, first contact connects the first lead drawn from one end of the first low-voltage coil of transformer, first low tension terminal of the second lead connection transformer drawn from the other end of the first low-voltage coil of transformer, second contact connects the 3rd lead drawn from one end of the second low-voltage coil of transformer, the second low tension terminal and the 3rd contact for the 4th lead connection transformer drawn from the other end of the second low-voltage coil of transformer.The present invention eliminates original switching switch on the premise of voltage switching is met, so as to significantly save the purchase cost of switch, therefore the holistic cost of transformer also reduces.
Description
Technical field
The present invention relates to the design field of threephase oil immersed transformer, more particularly to realizes that high-current low-voltage side twin voltage is cut
The device and method changed.
Background technology
With being continuously increased for Domestic Transformers export volume, for countries such as some Latin Americas, Africa, because power grid operation is asked
Topic, voltage class is intricate, variation, requires that transformer majority the switching of low-pressure side twin voltage uses.The invention discloses
A kind of oil-filled transformer, it includes casing and case lid, and case lid is provided with the device that low tension terminal and twin voltage switch, casing
Two low-voltage coils are inside provided with, the device and low tension terminal that two low-voltage coils switch with twin voltage can pass through case after being connected
The device switching connection of the voltage switching covered carrys out pressure regulation.
For the transformer of low-voltage dual-voltage switching, in the design of transformer stage, typically switching is added to open using series coil
The structure of pass realizes twin voltage handoff functionality.When transformer capacity becomes big, when low-pressure side electric current is more than more than 4000A, to switching
The selection of switch there is very big problem, and this high-current switch typically will without the economic section three-phase integrated switch in space-efficient
Single-phase switch is done to meet high current requirement.In the prior art, when low pressure needs double TURPs to change, can only select three it is single-phase
Switching switch, to meet that switch must endure as the requirement of high current.The shortcomings that this solution is：Three high currents are single-phase to be opened
It is high to close cost, the transformer-cabinet space of occupancy is big, considerably increases transformer material cost and transformer appearance and size.It is aobvious
So, after by the way of three single-phase switchings switch, although performance meets to require, the overall production cost of transformer will significantly
Increase.
The content of the invention
It is an object of the invention to provide a kind of brand-new effective reduction transformer cost to realize high-current low-voltage side twin voltage
The apparatus and method of switching, three lists must be selected during strong current transformer low pressure pair switching in traditional solution to overcome
Mutually switch, the shortcomings that so as to cause transformer entirety production cost to be significantly increased.
In order to achieve the above object, the invention provides a kind of dress that can realize the twin voltage switching of high-current low-voltage side
Put, it is characterised in that including at least one first contact, at least one second contact, at least one 3rd contact and at least one
Individual gearshift piece, described gearshift piece connect by the first contact and the connection of the second contact or by the first contact and the 3rd contact, and first
Contact connects the first lead drawn from one end of the first low-voltage coil of transformer, from the another of the first low-voltage coil of transformer
First low tension terminal of the second lead connection transformer that one end is drawn, the second contact connect the second low-voltage line from transformer
The 3rd lead that one end of circle is drawn, the 4th lead drawn from the other end of the second low-voltage coil of transformer connect transformer
The second low tension terminal and the 3rd contact.
Preferably, the first described lead connects the first contact by copper bus-bar, and the 3rd lead passes through copper bus-bar connection the
Two contacts, the 4th lead connect the 3rd contact by copper bus-bar, and the first described contact, the second contact and the 3rd contact are all copper
Screw rod.
It is highly preferred that connected between described copper screw bolt and copper bus-bar by copper nut.
Present invention also offers a kind of oil with the above-mentioned device that can realize the twin voltage switching of high-current low-voltage side
Immersion transformer, including fuel tank and case lid, described fuel tank is interior to be provided with the first low-voltage coil and the second low-voltage coil, its feature
It is, in addition to the above-mentioned device that can realize the twin voltage switching of high-current low-voltage side, described case lid are fixedly connected with insulation
Plate, the first copper screw bolt, the second copper screw bolt and the 3rd bronze medal of the described device that can realize the twin voltage switching of high-current low-voltage side
Screw rod is fixed on the insulation board, and gearshift piece is located above insulation board.
Preferably, the upside of described fuel tank is provided with oil box, and oil box connects the first valve and the second valve.
It is highly preferred that described oil box is provided with oil box hand hole.
It is highly preferred that described oil box is provided with oil box air relief cock.
It is highly preferred that the junction between described oil box and case lid is provided with sealing gasket.
Present invention also offers a kind of method that can realize the twin voltage switching of high-current low-voltage side, it is characterised in that adopts
With the above-mentioned device that can be realized high-current low-voltage side twin voltage and switch, touched by operating gearshift piece in the first contact and second
Switched between head connection and the first contact and the connection of the 3rd contact, change the low tension terminal of transformer first and the second low pressure
Output voltage between binding post, realize the twin voltage switching of high-current low-voltage side.
Compared with prior art, the beneficial effects of the invention are as follows：
The device that can realize the twin voltage switching of high-current low-voltage side of the present invention exists two low-voltage coil copper bus-bars
Inside transformer is connected as twin voltage switch mode, cancels switching switch, to meet that strong current transformer low-voltage dual-voltage switches
Requirement.
After the transformer of the present invention is by increasing a device that can realize the twin voltage switching of high-current low-voltage side, full
On the premise of afc voltage switches, eliminate original switching switch, so as to significantly save the purchase cost of switch, transformer it is whole
Therefore body cost also reduces.
Brief description of the drawings
Fig. 1 is the schematic device that can realize the twin voltage switching of high-current low-voltage side；
Fig. 2 is oil-filled transformer schematic diagram；
Fig. 3 is oil-filled transformer top view.
Embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention
Rather than limitation the scope of the present invention.In addition, it is to be understood that after the content of the invention lectured has been read, people in the art
Member can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Scope.
As shown in figure 1, the device that the twin voltage switching of high-current low-voltage side can be realized of the present embodiment, including the first contact
1st, the second contact 2, the 3rd contact 3 and gearshift piece 1-8, described gearshift piece 1-8 the first contact 1 and the second contact 2 are connected or
First contact 1 and the 3rd contact 3 are connected, the first contact 1 connects the from the extraction of one end of the first low-voltage coil of transformer
One lead a1, the first low pressure of the second lead x1 connection transformers drawn from the other end of the first low-voltage coil of transformer connect
Terminal X0, the second contact 2 connect the 3rd lead x2 from the extraction of one end of the second low-voltage coil of transformer, from the of transformer
The the second low tension terminal X1 and the 3rd contact 3 for the 4th lead a2 connection transformers that the other end of two low-voltage coils is drawn.
As shown in Figures 2 and 3, a kind of oil with the above-mentioned device that can realize the twin voltage switching of high-current low-voltage side
Immersion transformer, including fuel tank and case lid 1-3, described fuel tank are interior low provided with high-tension coil, the first low-voltage coil and second
Line ball circle, in addition to the above-mentioned device that can realize the twin voltage switching of high-current low-voltage side, described case lid 1-3 are fixedly connected
Insulation board 1-5, described insulation board 1-5 are epoxy plate, the described device that can realize the twin voltage switching of high-current low-voltage side
The first copper screw bolt 1, the second copper screw bolt 2 and the 3rd copper screw bolt 3 be fixed on insulation board 1-5, gearshift piece 1-8 be located at insulation board
Above 1-5, by the first contact of copper bus-bar 1-1 connections 1, the 3rd lead x2 is connected the first described lead a1 by copper bus-bar 1-1
The second contact 2 is connect, the 4th lead a2 passes through the contact 3 of copper bus-bar 1-1 connections the 3rd, the first described contact 1, the and of the second contact 2
3rd contact 3 is all copper screw bolt 7.Connected between described copper screw bolt 7 and copper bus-bar 1-1 by copper nut 1-2 and pad.First
Low tension terminal X0 and the second low tension terminal X1 can be located on case lid 1-3 or insulation board 1-5.
In the present embodiment, the first contact 1, the second contact 2, the 3rd contact 3, gearshift piece 1-8, the second low tension terminal X1,
First low-voltage coil, the second low-voltage coil respectively have 3, and the first low tension terminal X0 has 1, connects as shown in Figure 1, and this is first low
Crimping terminal X0 and 1 the first contact 1,1 the 3rd contact 3,1 of the second contact 2,1 gearshift piece 1-8,1 the second low pressure connect
Terminal X1,1 the first low-voltage coil, 1 the second low-voltage coil form a set of voltage switching component, can entirely realize high current
The device of low-pressure side twin voltage switching is made up of 3 sets of voltage switching components.
The upside of described fuel tank is provided with oil box 1-12, oil box 1-12 connections the first valve 1-11 and the second valve 1-6.Institute
The oil box 1-12 stated is provided with oil box hand hole 1-9.Described oil box 1-12 is provided with oil box air relief cock 1-10.Described oil box 1-
Junction between 12 and case lid 1-3 is provided with sealing gasket 1-4.
During installation, in the described device point that can realize the twin voltage switching of high-current low-voltage side, outer two parts；Press inside
First lead a1, the 3rd lead x2, the 4th lead a2 are fastened on copper screw bolt 7 by Fig. 1 by copper bus-bar 1-1, by second
First low tension terminal X0, the second low tension terminal X1 of the 4th lead a2 connection transformers of lead x1 connection transformers, use
Copper nut 1-2, pad fastening are firm.Gear shift piece 1-8 is fixed on suitable copper screw bolt 7 and tightened by outside by voltage output requirement
Reinforce.Wherein copper bus-bar 1-1, copper nut 1-2, copper backing, the specification of copper screw bolt 7 are selected by actual current size.Assembling
After the completion of oil box 1-12 oil filler tests together with body, commissioning test.
Use the method for the high-current low-voltage side twin voltage switching of said apparatus for：By operating gearshift piece 1-8 first
The contact 2 of contact 1 and second connects to be switched between the first contact 1 and the connection of the 3rd contact 3, when the first contact 1 and second
When contact 2 connects, the first low-voltage coil and the series connection of the second low-voltage coil, transformer the first low tension terminal X0 and the second low pressure connect
A kind of voltage is exported between terminal X1, when the first contact 1 and the 3rd contact 3 connect, transformer the first low tension terminal X0 and
Another voltage is exported between second low tension terminal X1, is connect so as to change transformer the first low tension terminal X0 and the second low pressure
Output voltage between terminal X1, realize the twin voltage switching of high-current low-voltage side.
When user scene needs low pressure switching voltage operation, transformer power-off, the first valve 1-11 is closed, opens second
Valve 1-6, transformer oil surface in oil box is put into position under gear shift piece 1-8, opens oil box hand hole 1-9, gear shift piece 1-8 is switched
Onto the contact of suitable voltage gear, fixed with nut, close oil box hand hole 1-9, close the second valve 1-6, open oil box
Air relief cock 1-10, the first valve 1-11 is opened, the oil note allowed inside conservator arrives oil box 1-12, when oil box air relief cock 1-10 has oil to emit
Oil box air relief cock 1-10 is closed when going out, observation oil pillow oil level, it is necessary to during repairing repairing arrive suitable oil level, complete primary voltage and switch
Overall process.
Claims (9)
1. a kind of device that can realize the twin voltage switching of high-current low-voltage side, it is characterised in that touched including at least one first
Head (1), at least one second contact (2), at least one 3rd contact (3) and at least one gearshift piece (1-8), described gearshift
Piece (1-8) connects by the first contact (1) and the second contact (2) connection or by the first contact (1) and the 3rd contact (3), and first touches
The first lead (a1) that head (1) connection is drawn from one end of the first low-voltage coil of transformer, from the first low-voltage line of transformer
The first low tension terminal (X0) for the second lead (x1) connection transformer that the other end of circle is drawn, the second contact (2) connection from
The 3rd lead (x2) that one end of second low-voltage coil of transformer is drawn, draws from the other end of the second low-voltage coil of transformer
The second low tension terminal (X1) and the 3rd contact (3) of the 4th lead (a2) the connection transformer gone out.
2. the device of high-current low-voltage side twin voltage switching can be realized as claimed in claim 1, it is characterised in that described
First lead connects the first contact by copper bus-bar, and the 3rd lead connects the second contact by copper bus-bar, and the 4th lead passes through copper
Busbar connects the 3rd contact, and the first described contact, the second contact and the 3rd contact are all copper screw bolt.
3. the device of high-current low-voltage side twin voltage switching can be realized as claimed in claim 2, it is characterised in that described
It is connected between copper screw bolt (7) and copper bus-bar (1-1) by copper nut (1-2).
4. a kind of oil-filled transformer with the above-mentioned device that can realize the twin voltage switching of high-current low-voltage side, including oil
Case and case lid (1-3), described fuel tank is interior to be provided with the first low-voltage coil and the second low-voltage coil, it is characterised in that also includes
The device that can realize the twin voltage switching of high-current low-voltage side any one of claim 1-3, described case lid (1-3)
It is fixedly connected with insulation board (1-5), high-current low-voltage side twin voltage switching can be realized any one of claim 1-3
The first copper screw bolt (1), the second copper screw bolt (2) and the 3rd copper screw bolt (3) of device are fixed on the insulation board (1-5), piece of shifting gears
(1-8) is located above insulation board (1-5).
5. the oil immersed type as claimed in claim 4 with the above-mentioned device that can realize the twin voltage switching of high-current low-voltage side
Transformer, it is characterised in that the upside of described fuel tank is provided with oil box (1-12), and oil box (1-12) connects the first valve (1-11)
With the second valve (1-6).
6. the oil immersed type as claimed in claim 5 with the above-mentioned device that can realize the twin voltage switching of high-current low-voltage side
Transformer, it is characterised in that described oil box (1-12) is provided with oil box hand hole (1-9).
7. the oil immersed type as claimed in claim 5 with the above-mentioned device that can realize the twin voltage switching of high-current low-voltage side
Transformer, it is characterised in that described oil box (1-12) is provided with oil box air relief cock (1-10).
8. the oil immersed type as claimed in claim 5 with the above-mentioned device that can realize the twin voltage switching of high-current low-voltage side
Transformer, it is characterised in that the junction between described oil box (1-12) and case lid (1-3) is provided with sealing gasket (1-4).
A kind of 9. method that can realize the twin voltage switching of high-current low-voltage side, it is characterised in that appoint using in claim 1-3
The device that can realize the twin voltage switching of high-current low-voltage side described in one, by operating gearshift piece (1-8) in the first contact
(1) switched over between the second contact (2) is connected and the first contact (1) is connected with the 3rd contact (3), change transformer first
Output voltage between low tension terminal (X0) and the second low tension terminal (X1), realize the twin voltage switching of high-current low-voltage side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710767618.4A CN107424806B (en) | 2017-08-30 | 2017-08-30 | It can be realized the device and method of high-current low-voltage side twin voltage switching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710767618.4A CN107424806B (en) | 2017-08-30 | 2017-08-30 | It can be realized the device and method of high-current low-voltage side twin voltage switching |
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| Publication Number | Publication Date |
|---|---|
| CN107424806A true CN107424806A (en) | 2017-12-01 |
| CN107424806B CN107424806B (en) | 2019-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710767618.4A Active CN107424806B (en) | 2017-08-30 | 2017-08-30 | It can be realized the device and method of high-current low-voltage side twin voltage switching |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109741979A (en) * | 2018-12-27 | 2019-05-10 | 西门子变压器（武汉）有限公司 | The switching device and transformer of transformer |
| CN111816428A (en) * | 2020-06-19 | 2020-10-23 | 山东电力设备有限公司 | 220KV three-winding medium-voltage dual-voltage transformer lead structure |
| CN114156070A (en) * | 2021-12-30 | 2022-03-08 | 济南清河电气有限公司 | Oil-immersed transformer |
| CN109741979B (en) * | 2018-12-27 | 2024-05-03 | 西门子能源变压器(武汉)有限公司 | Switching device of transformer and transformer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201117415Y (en) * | 2007-11-12 | 2008-09-17 | 郑龙 | Self-coupled regulating transformer winding construction |
| CN202134380U (en) * | 2011-07-11 | 2012-02-01 | 申达电气集团有限公司 | Double-voltage dry type transformer |
| CN102420046A (en) * | 2011-11-02 | 2012-04-18 | 杭州钱江电气集团股份有限公司 | Double-voltage transformer |
| CN105742032A (en) * | 2014-12-09 | 2016-07-06 | 特变电工沈阳变压器集团有限公司 | Double-voltage coil for photovoltaic transformer and winding method of double-voltage coil |
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2017
- 2017-08-30 CN CN201710767618.4A patent/CN107424806B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201117415Y (en) * | 2007-11-12 | 2008-09-17 | 郑龙 | Self-coupled regulating transformer winding construction |
| CN202134380U (en) * | 2011-07-11 | 2012-02-01 | 申达电气集团有限公司 | Double-voltage dry type transformer |
| CN102420046A (en) * | 2011-11-02 | 2012-04-18 | 杭州钱江电气集团股份有限公司 | Double-voltage transformer |
| CN105742032A (en) * | 2014-12-09 | 2016-07-06 | 特变电工沈阳变压器集团有限公司 | Double-voltage coil for photovoltaic transformer and winding method of double-voltage coil |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109741979A (en) * | 2018-12-27 | 2019-05-10 | 西门子变压器（武汉）有限公司 | The switching device and transformer of transformer |
| CN109741979B (en) * | 2018-12-27 | 2024-05-03 | 西门子能源变压器(武汉)有限公司 | Switching device of transformer and transformer |
| CN111816428A (en) * | 2020-06-19 | 2020-10-23 | 山东电力设备有限公司 | 220KV three-winding medium-voltage dual-voltage transformer lead structure |
| CN114156070A (en) * | 2021-12-30 | 2022-03-08 | 济南清河电气有限公司 | Oil-immersed transformer |
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| Publication number | Publication date |
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| CN107424806B (en) | 2019-07-16 |
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