CN110164726A - A kind of voltage regulating distribution transformer - Google Patents
A kind of voltage regulating distribution transformer Download PDFInfo
- Publication number
- CN110164726A CN110164726A CN201910441268.1A CN201910441268A CN110164726A CN 110164726 A CN110164726 A CN 110164726A CN 201910441268 A CN201910441268 A CN 201910441268A CN 110164726 A CN110164726 A CN 110164726A
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- Prior art keywords
- voltage
- phase
- distribution transformer
- coil
- regulating distribution
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Classifications
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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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
-
- 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
- H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
- H01H9/547—Combinations of mechanical switches and static switches, the latter being controlled by the former
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
- H01H9/56—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere for ensuring operation of the switch at a predetermined point in the ac cycle
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The application is suitable for transformer technology field, provides a kind of voltage regulating distribution transformer, comprising: low pressure winding, for exporting the output voltage of the voltage regulating distribution transformer；High-voltage winding, for receiving the input voltage of the voltage regulating distribution transformer；Tap-changing windings are connect with the high-voltage winding, for adjusting the output voltage of the voltage regulating distribution transformer；At least one tap changer is arranged on the tap-changing windings, for carrying out fault control to coil some or all of in the tap-changing windings；Each tap changer includes mechanical switch and electronic switch in parallel.Voltage regulating distribution transformer provided by the embodiments of the present application, since mechanical switch and electronic switch is in parallel, by triggering electronic switch movement in voltage over zero, to which mechanical switch is shorted, and then make mechanical switch movement when both ends pressure drop is lower, it realizes acting without electric arc for mechanical switch, solves the problems, such as that current transformer is easy to produce electric arc when in use.
Description
Technical field
The application belongs to transformer technology field more particularly to a kind of voltage regulating distribution transformer.
Background technique
More for Node distribution, transmission line of electricity distance is longer, and the power distribution network that annual calendar variation is bigger, is passing
It transmits electricity during energy, the loss ratio heavy phase of route is to bigger than normal, so that in the peak of power consumption period, the user terminal voltage of some areas
Relatively low, especially in the end of route, the landing of voltage, which seems, to be particularly acute, and low-voltage problem frequently occurs.In addition distribution
The fluctuation of the access of power supply, new energy power output also results in voltage fluctuation.Daily production and life of the voltage fluctuation to user
Bring great puzzlement.
To stablize distribution network voltage, guarantees customer power supply quality of voltage, need to carry out the adjusting of voltage in power distribution network.It adopts
It is voltage regulating mode most widely used at present with voltage regulating distribution transformer.Existing voltage regulating distribution transformer is easy to produce when in use
Raw electric arc, and electric arc can all generate biggish adverse effect to the oil in switch contact and transformer.
Summary of the invention
In view of this, the embodiment of the present application provides a kind of voltage regulating distribution transformer, used with solving current transformer
When the problem of being easy to produce electric arc.
According in a first aspect, the embodiment of the present application provides a kind of voltage regulating distribution transformer, comprising: low pressure winding is used for
Export the output voltage of the voltage regulating distribution transformer；High-voltage winding, for receiving the input electricity of the voltage regulating distribution transformer
Pressure；Tap-changing windings are connect with the high-voltage winding, for adjusting the output voltage of the voltage regulating distribution transformer；At least one
Tap changer is arranged on the tap-changing windings, for carrying out short-circuit control to coil some or all of in the tap-changing windings
System；Each tap changer includes mechanical switch and electronic switch in parallel.
With reference to first aspect, in some embodiments of the present application, the electronic switch includes the crystalline substance of two reverse parallel connections
Brake tube.
With reference to first aspect, in some embodiments of the present application, the electronic switch includes the double of two reverse parallel connections
To thyristor.
With reference to first aspect, in some embodiments of the present application, the mechanical switch includes vacuum switch.
With reference to first aspect, in some embodiments of the present application, the high-voltage winding includes A phase high-tension coil, B phase height
Crimping circle and C phase high-tension coil.
With reference to first aspect, in some embodiments of the present application, the tap-changing windings include that A phase voltage regulation coil, B phase are adjusted
Crimping circle and C phase voltage regulation coil.
With reference to first aspect, in some embodiments of the present application, the A phase voltage regulation coil and the A phase high-tension coil
Series connection, the B phase voltage regulation coil are connected with the B phase high-tension coil, the C phase voltage regulation coil and the C phase high-tension coil string
Connection.
With reference to first aspect, in some embodiments of the present application, at least one institute is provided on the A phase voltage regulation coil
Tap changer is stated, at least one described tap changer is provided on the B phase voltage regulation coil, is arranged on the C phase voltage regulation coil
There is at least one described tap changer.
With reference to first aspect, in some embodiments of the present application, there are two the tune for setting on the A phase voltage regulation coil
It compresses switch, setting is there are two the tap changer on the B phase voltage regulation coil, and there are two institutes for setting on the C phase voltage regulation coil
State tap changer.
With reference to first aspect, in some embodiments of the present application, the low pressure winding includes that A phase low-voltage coil, B phase are low
Crimping circle and C phase low-voltage coil.
According to second aspect, the embodiment of the present application provides a kind of electronic equipment, and the electronic equipment includes first aspect
Or voltage regulating distribution transformer described in first aspect any embodiment.
Voltage regulating distribution transformer provided by the embodiments of the present application, since mechanical switch and electronic switch is in parallel, by
Voltage over zero triggers electronic switch movement, so that mechanical switch is shorted, and then makes mechanical switch when both ends pressure drop is lower
Movement realizes acting without electric arc for mechanical switch, solves the problems, such as that current transformer is easy to produce electric arc when in use.
Detailed description of the invention
It in order to more clearly explain the technical solutions in the embodiments of the present application, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only some of the application
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the structural schematic diagram of a specific example of voltage regulating distribution transformer provided by the embodiments of the present application；
Fig. 2 is the structural schematic diagram of a specific example of electronic equipment provided by the embodiments of the present application.
Specific embodiment
In being described below, for illustration and not for limitation, the tool of such as particular system structure, technology etc is proposed
Body details, so as to provide a thorough understanding of the present application embodiment.However, it will be clear to one skilled in the art that there is no these specific
The application also may be implemented in the other embodiments of details.In other situations, it omits to well-known system, device, electricity
The detailed description of road and method, so as not to obscure the description of the present application with unnecessary details.
Mechanical on-load voltage regulating device, i.e., mechanical load ratio bridging switch is in engineering by universal application.But
This traditional on-load voltage regulation mode remains some inevitable defects, as mechanism is complicated, there are electric arcs, response
Slowly, three-phase is unable to the problems such as split-phase is adjusted.Traditional mechanical on-load regulator transformer is chiefly used in high-voltage large-capacity transformer, in state
Inside it is rarely used in distribution transformer.In order to avoid the electric arc that mechanical on-load voltage regulating switch generates in handoff procedure touches switch
Head and the influence deteriorated to transformer oil, domestic and international related researcher propose to switch using power electronic devices as switching
Instead of the solution of mechanical contact, but pure electronic power switch continue it is through-flow, bring loss is high, device to cooling requirements compared with
The defects of high.
In order to avoid some inherent shortcomings of mechanical on-load voltage regulating switch, pressure regulation distribution provided by the embodiments of the present application becomes
The switching that mechanical on-load voltage regulating switch and power electronic devices are constituted is switched phase structure by depressor, constitutes a kind of novel mixing
Formula on-load voltage regulating switch can be evaded merely using mechanical on-load voltage regulating switch, or be constituted using power electronic devices merely
Switching switch defect.
In order to illustrate technical solution described herein, the following is a description of specific embodiments.
The embodiment of the present application provides a kind of voltage regulating distribution transformer, as shown in Figure 1, the voltage regulating distribution transformer can wrap
It includes: low pressure winding 100, high-voltage winding 200, tap-changing windings and at least one tap changer 400.
Wherein, low pressure winding 100 is used to export the output voltage of voltage regulating distribution transformer.
High-voltage winding 200 is used to receive the input voltage of voltage regulating distribution transformer.
Tap-changing windings are connect with high-voltage winding 200, for adjusting the output voltage of voltage regulating distribution transformer.
At least one tap changer 400 is arranged on tap-changing windings, for line some or all of in tap-changing windings
Circle carries out fault control.
Specifically, each tap changer 400 includes mechanical switch and electronic switch in parallel.
In a specific embodiment, the electronic switch includes the thyristor of two reverse parallel connections, alternatively, two reversed
Bidirectional thyristor in parallel；The mechanical switch is vacuum switch.
In voltage regulating distribution transformer shown in Fig. 1, the high-voltage winding 200 includes A phase high-tension coil, B phase high-voltage line
Circle and C phase high-tension coil；Tap-changing windings include A phase voltage regulation coil 301, B phase voltage regulation coil 302 and C phase voltage regulation coil 303；It is low
Pressing winding 100 includes A phase low-voltage coil, B phase low-voltage coil and C phase low-voltage coil.
Specifically, the A phase voltage regulation coil 301 is connected with the A phase high-tension coil, the B phase voltage regulation coil 302 and institute
The series connection of B phase high-tension coil is stated, the C phase voltage regulation coil 303 is connected with the C phase high-tension coil.
In order to realize split-phase pressure regulation, respectively on every phase voltage regulation coil in tap-changing windings, corresponding tune can be respectively provided with
400 are compressed switch, to pass through the coil for adjusting and accessing high-voltage winding 200 in every phase voltage regulation coil according to the difference of three-phase voltage
Quantity realizes split-phase pressure regulation.
Specifically, 301 at least one described tap changer 400 can be provided on A phase voltage regulation coil, in B phase pressure regulation
It is provided at least one described tap changer 400 on coil 302, at least one described tune is provided on C phase voltage regulation coil 303
Compress switch 400.
In voltage regulating distribution transformer shown in Fig. 1, setting is opened there are two the pressure regulation on the A phase voltage regulation coil 301
400 are closed, setting is arranged there are two the tap changer 400 on the C phase voltage regulation coil 303 on the B phase voltage regulation coil 302
There are two the tap changers 400.
It, can be with it should be noted that for the quantity of the tap changer 400 in access tap-changing windings on every phase voltage regulation coil
It is freely set as needed by user, the embodiment of the present application is without limitation.
In voltage regulating distribution transformer shown in Fig. 1, tap-changing windings can be arranged in 100 He of transformer mesolow winding
The central point of high-voltage winding 200, to reduce the dielectric level of tap-changing windings and tap changer 400.Each phase in tap-changing windings
The voltage level that number of coils can be adjusted as needed is configured.
Tap changer 400 can be bypassed tap-changing windings by parallel with tap-changing windings, or tap-changing windings are accessed
High-voltage winding 200, and then the number of turns of transformer primary winding is adjusted, and adjust the no-load voltage ratio of transformer, reach adjustment low pressure winding
The purpose of 100 output voltages.
Voltage-regulation principle explanation is carried out for connecing in each tap changer 400 on A phase voltage regulation coil 301.When needing A phase
When i-th group of coil in voltage regulation coil 301 accesses high-voltage winding 200, the electricity in tap changer 400 connected in parallel can control
Sub switch Ta1 and mechanical switch Ka1 is disconnected；When needing i-th group of coil in A phase voltage regulation coil 301 to be shorted, can control
Electronic switch Ta1 and mechanical switch Ka1 closure in tap changer 400 connected in parallel.When needing in A phase voltage regulation coil 301
The i-th i group coil when accessing high-voltage winding 200, can control electronic switch Ta2 in tap changer 400 connected in parallel and
Mechanical switch Ka2 is disconnected；When needing the i-th i group coil in A phase voltage regulation coil 301 to be shorted, can control connected in parallel
Electronic switch Ta2 and mechanical switch Ka2 closure in tap changer 400.When needing i-th group of coil in A phase voltage regulation coil 301
When accessing high-voltage winding 200 with the i-th i group coil, it can control Ta1, Ka1, Ta2 and Ka2 and disconnect；When needing A phase
When i-th group of coil and the i-th i group coil in voltage regulation coil 301 exit high-voltage winding 200, can control Ta1, Ka1, Ta2 and
Ka2 is closed.By two tap changers 400 being arranged on A phase voltage regulation coil 301, three-level pressure regulation may be implemented.B phase and C
The voltage of phase is adjusted, and similar with A phase pressure regulation, details are not described herein.
Tap changer 400 is composed in parallel by mechanical switch and electronic switch, and electronic power switch is by two antiparallel crystalline substances
Brake tube or bidirectional thyristor are constituted, and mechanical switch can be made of vacuum switch.The control mode of tap changer 400 are as follows:
When needing tap changer 400 to be closed, thyristor switch is triggered in voltage over zero first, mechanical switch
Combined floodgate both end voltage is reduced to close to 0, and mechanical switch is closed a floodgate, and winding current is transferred to mechanical switch by thyristor switch,
It when the voltage reversal of thyristor, automatically shuts down, realizes cut-offfing without electric arc for tap changer 400；When needing to control tap changer 400
When disconnection, thyristor switch is triggered in voltage over zero first, mechanical switch is shorted, the both ends of mechanical switch
As low as the tube voltage drop of thyristor, generally several volts are at this time disconnected mechanical switch, electric current is transferred to crystalline substance by mechanical switch for voltage drop
Brake tube branch, when the voltage reversal of thyristor, tap-changing windings are accessed high-voltage winding 200, realize tap changer by control shutdown
400 cut-off without electric arc.
Since mechanical switch closes a floodgate under zero current and no-voltage, avoids mechanical switch and generate electric arc.Due to thyristor
The closing time of switch is generally several milliseconds, and transformer regulating speed is greatly enhanced.
Each tap changer 400 on A, B, C three-phase is connect, can be divided according to the difference of 100 output voltage of low pressure winding
The balance control of three-phase voltage is realized in the disconnection and closure for mutually adjusting each tap changer 400.
Voltage regulating distribution transformer provided by the embodiments of the present application, since mechanical switch and electronic switch is in parallel, by
Voltage over zero triggers electronic switch movement, so that mechanical switch is shorted, and then makes mechanical switch when both ends pressure drop is lower
Movement realizes acting without electric arc for mechanical switch, solves the problems, such as that current transformer is easy to produce electric arc when in use.
Voltage regulating distribution transformer provided by the embodiments of the present application preferably improves the property of on-load regulator transformer
Can, adapt to the new demand of power distribution network development, with fast-developing power electronic technique, using novel power electronic devices with
Conventional mechanical switch, which combines the hybrid of construction distribution transformer, load split-phase tap changer, improves or improve tradition point
The performance for connecing switch has also taken into account the low on-state loss and interference free performance of mechanical switch, together while realizing commutating without arcing
Shi Shixian split-phase pressure regulation improves repeatedly influence of the switching to insulating oil.
The embodiment of the present application also provides a kind of electronic equipment, as shown in Fig. 2, the electronic equipment 600 includes such as Fig. 1 institute
The voltage regulating distribution transformer 500 shown.
Finally it should be noted that above embodiments are only to illustrate the technical solution of the application rather than its limitations, institute
The those of ordinary skill in category field can still modify to the specific embodiment of the application referring to above-described embodiment or
Equivalent replacement, these are wanted in the right of the application without departing from any modification of the application spirit and scope or equivalent replacement
It asks within protection scope.
Claims (11)
1. a kind of voltage regulating distribution transformer characterized by comprising
Low pressure winding, for exporting the output voltage of the voltage regulating distribution transformer；
High-voltage winding, for receiving the input voltage of the voltage regulating distribution transformer；
Tap-changing windings are connect with the high-voltage winding, for adjusting the output voltage of the voltage regulating distribution transformer；
At least one tap changer is arranged on the tap-changing windings, for line some or all of in the tap-changing windings
Circle carries out fault control；
Each tap changer includes mechanical switch and electronic switch in parallel.
2. voltage regulating distribution transformer as described in claim 1, which is characterized in that the electronic switch includes two reverse parallel connections
Thyristor.
3. voltage regulating distribution transformer as described in claim 1, which is characterized in that the electronic switch includes two reverse parallel connections
Bidirectional thyristor.
4. voltage regulating distribution transformer as described in claim 1, which is characterized in that the mechanical switch includes vacuum switch.
5. voltage regulating distribution transformer according to any one of claims 1 to 4, which is characterized in that the high-voltage winding includes A
Phase high-tension coil, B phase high-tension coil and C phase high-tension coil.
6. voltage regulating distribution transformer as claimed in claim 5, which is characterized in that the tap-changing windings include A phase voltage regulation coil,
B phase voltage regulation coil and C phase voltage regulation coil.
7. voltage regulating distribution transformer as claimed in claim 6, which is characterized in that the A phase voltage regulation coil and the A phase high pressure
Coil series connection, the B phase voltage regulation coil are connected with the B phase high-tension coil, the C phase voltage regulation coil and the C phase high-voltage line
Circle series connection.
8. voltage regulating distribution transformer as claimed in claim 7, which is characterized in that be provided at least on the A phase voltage regulation coil
One tap changer is provided at least one described tap changer, the C phase voltage regulation coil on the B phase voltage regulation coil
On be provided at least one described tap changer.
9. voltage regulating distribution transformer as claimed in claim 7, which is characterized in that on the A phase voltage regulation coil there are two settings
The tap changer, setting is provided with there are two the tap changer on the C phase voltage regulation coil on the B phase voltage regulation coil
Two tap changers.
10. voltage regulating distribution transformer as claimed in claim 7 or 8, which is characterized in that the low pressure winding includes A phase low pressure
Coil, B phase low-voltage coil and C phase low-voltage coil.
11. a kind of electronic equipment, which is characterized in that the electronic equipment includes tune as described in any one of claim 1 to 10
It is press-fitted piezoelectric transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910441268.1A CN110164726A (en) | 2019-05-24 | 2019-05-24 | A kind of voltage regulating distribution transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910441268.1A CN110164726A (en) | 2019-05-24 | 2019-05-24 | A kind of voltage regulating distribution transformer |
Publications (1)
| Publication Number | Publication Date |
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| CN110164726A true CN110164726A (en) | 2019-08-23 |
Family
ID=67632711
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910441268.1A Pending CN110164726A (en) | 2019-05-24 | 2019-05-24 | A kind of voltage regulating distribution transformer |
Country Status (1)
| Country | Link |
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| CN (1) | CN110164726A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113077980A (en) * | 2021-03-22 | 2021-07-06 | 全球能源互联网研究院有限公司 | On-load tap-changer for high-voltage transmission transformer and control method thereof |
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| CN107134348A (en) * | 2017-05-25 | 2017-09-05 | 国网江苏省电力公司南京供电公司 | A kind of distribution transformer voltage-regulating system |
| CN107658115A (en) * | 2017-11-08 | 2018-02-02 | 扬州市苏明电器有限公司 | A kind of pressure regulating and capacitance regulating transformer and its control device |
| CN207367769U (en) * | 2017-06-15 | 2018-05-15 | 浙江宝威电气有限公司 | A kind of capacity and pressure regulating transformer |
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2019
- 2019-05-24 CN CN201910441268.1A patent/CN110164726A/en active Pending
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|---|---|---|---|---|
| KR20130097909A (en) * | 2012-02-27 | 2013-09-04 | 박찬웅 | Magnetic energy transfer element and power supply which cancels electrical noise |
| CN102664094A (en) * | 2012-05-23 | 2012-09-12 | 天津天能变压器有限公司 | Single-phase dry type converter transformer for suppressing polysilicon and voltage regulation way thereof |
| CN203536198U (en) * | 2013-11-14 | 2014-04-09 | 北京三得普华科技有限责任公司 | Transformer |
| CN206331885U (en) * | 2016-08-18 | 2017-07-14 | 中国电力科学研究院 | One kind is without arc loaded automatic voltage-regulating distribution transformer device |
| CN107134348A (en) * | 2017-05-25 | 2017-09-05 | 国网江苏省电力公司南京供电公司 | A kind of distribution transformer voltage-regulating system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113077980A (en) * | 2021-03-22 | 2021-07-06 | 全球能源互联网研究院有限公司 | On-load tap-changer for high-voltage transmission transformer and control method thereof |
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