CN108305762A - Capacitance-adjustable transformer and changing pressure operation method - Google Patents
Capacitance-adjustable transformer and changing pressure operation method Download PDFInfo
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- CN108305762A CN108305762A CN201711391880.XA CN201711391880A CN108305762A CN 108305762 A CN108305762 A CN 108305762A CN 201711391880 A CN201711391880 A CN 201711391880A CN 108305762 A CN108305762 A CN 108305762A
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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
- H01F27/2823—Wires
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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
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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
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- Coils Of Transformers For General Uses (AREA)
Abstract
The invention discloses a kind of capacitance-adjustable transformer and changing pressure operation methods.Wherein, which includes：High-voltage winding, low pressure winding, and balance winding, wherein it is d that high-voltage winding, low pressure winding and balance winding, which use concentric arrangement, balance winding coupling,.The present invention is solved since low capacity gear existing for capacitance-adjustable transformer in the related technology is resistant to unbalanced load energy force difference, caused by the ineffective technical problem of transformer energy saving.
Description
Technical field
The present invention relates to distribution transformer technical fields, in particular to a kind of capacitance-adjustable transformer and become press operation side
Method.
Background technology
Rural power grids, coal change the area such as electricity, and there is typical seasonal load fluctuation characteristic, the electricity consumptions such as office building, city to have
Typical daily load fluctuating characteristic.According to conventional electrical distribution transformer, the selection of transformer rated capacity should be chosen by peak load, when
Load is at a low ebb, and transformer is " low load with strong power " state, extremely inefficient.It can be by selecting loaded capacity-regulated transformer to solve this
One problem, when load is larger, transformer is automatically adjusted to high rate capability gear, and when load is smaller, transformer is adjusted automatically
Section improves transformer station high-voltage side bus efficiency, plays energy-efficient purpose to low rated capacity gear.
In the related technology, loaded capacity-regulated transformer realizes high and low specified appearance using high pressure D-Y conversions, low pressure parallel-serial conversion
Measure the ratio between gear capacity about 3.15：1, such as 315 (100) kVA capacitance-adjustable transformers, 315kVA are high power capacity gear rated capacity,
100kVA is low capacity gear rated capacity, and when transformer capacity gear is 315kVA, connection set Dyn11 works as transformer
Capacity gear is 100kVA, connection set Yyn0.It is known that when connection set is Yyn0 transformer belt unbalanced loads, it is low
Side is pressed to generate zero-sequence current.High-voltage winding winding connects for Y, cannot form zero-sequence current access.What low-pressure side zero-sequence current generated
Magnetic potential does not have corresponding high-voltage winding magnetic potential balance and plays a part of excitatory magnetic potential, it is established that through winding surrounding space from iron yoke
The zero sequence fluxes being closed to iron yoke, to induce zero sequence electromotive force.The zero sequence electromotive force is superimposed upon on former positive sequence voltage, makes change
Depressor low-pressure side neutral point drifting causes certain phase voltage to be higher than rated voltage, and certain phase voltages are less than rated voltage, and load is uneven
The bigger weighing apparatus degree the more serious.When equipment is connected to the phase line higher than rated voltage, service life of equipment or damage equipment are influenced；When setting
When the standby phase line being connected to less than rated voltage, being allowed to work may be abnormal.
In view of loaded capacity-regulated transformer low capacity gear, it is resistant to laod unbalance energy force difference, loaded capacity-regulated control strategy
Laod unbalance degree thresholding is set.When transformer station high-voltage side bus is in low capacity gear, when laod unbalance degree is more than setting value, transformer
It is then automatically adjusted to high power capacity gear, but integrated load causes have load to adjust still less than the best capacity transfer point of loaded capacity-regulated transformer
The energy-saving effect for holding transformer is substantially reduced.
For above-mentioned problem, currently no effective solution has been proposed.
Invention content
An embodiment of the present invention provides a kind of capacitance-adjustable transformer and changing pressure operation methods, at least to solve due to the relevant technologies
Low capacity gear existing for middle capacitance-adjustable transformer is resistant to unbalanced load energy force difference, caused by the ineffective skill of transformer energy saving
Art problem.
One side according to the ... of the embodiment of the present invention provides a kind of capacitance-adjustable transformer, including：High-voltage winding, low pressure around
Group, and balance winding, wherein the high-voltage winding, the low pressure winding and the balance winding use concentric arrangement, described
Balance winding coupling is d.
Optionally, the high-voltage winding, the low pressure winding and the balance winding include using concentric arrangement：It is described
Outermost of the high-voltage winding setting far from the axle center, the low pressure winding is positioned close to the most inner side in the axle center, described
Winding is balanced to be arranged between the high-voltage winding and the low pressure winding.
Optionally, the high-voltage winding, the low pressure winding and the balance winding include using concentric arrangement：It is described
Outermost of the high-voltage winding setting far from the axle center, the balance winding is positioned close to the most inner side in the axle center, described
Low pressure winding is arranged between the high-voltage winding and the balance winding.
Optionally, the balance winding uses the single layer or double-layer circular core structure of single paper bag flat type copper wire coiling.
Optionally, the capacity of the balance winding is the one third of low capacity gear rated capacity.
Optionally, the balance winding coupling be " opening D " or " closing D ", wherein described " opening D " be the balance winding according to
Secondary first and last connection, wherein one mutually first head is opened a way with another phase tail head, being connected to casing by lead is drawn out to outside, in outside
Short circuit grounding is carried out again；Described " closing D " is balance winding first and last connection successively, then by the balance winding in the capacity transfer
Ground connection in transformer.
Optionally, capacitance-adjustable transformer described in any one of the above embodiments further includes：It is high-voltage winding entrance bushing, capacitance switch, low
Press winding entrance bushing and balance winding entrance bushing, wherein the high-voltage winding entrance bushing is connected with the capacitance switch；
The capacitance switch is connected with the high-voltage winding and the low pressure winding, and the low pressure winding entrance bushing is opened with the capacity transfer
Connection connects, and the balance winding entrance bushing and the wherein one mutually first head of balance winding are connected with another phase tail head.
Another aspect according to the ... of the embodiment of the present invention, additionally provide it is a kind of based on capacitance-adjustable transformer described in any of the above-described into
The method that row becomes press operation, including：Determine the connection set of the capacitance-adjustable transformer, wherein the connection of the capacitance-adjustable transformer
Group includes：The bind mode of the high-voltage winding, the connection side of the bind mode of the low pressure winding and the balance winding
Formula；Change press operation is carried out based on the determining connection set.
Optionally, determine that the connection set of the capacitance-adjustable transformer includes：Height is operated in the capacitance-adjustable transformer
In the case of capacity gear, the connection set of the capacitance-adjustable transformer is：Dyn11+d0, wherein Dyn11+d0 is for identifying institute
The bind mode for stating high-voltage winding is D, and the bind mode of the low pressure winding is to be simultaneously with the bind mode for balancing winding
d0；In the case where the capacitance-adjustable transformer operates in low capacity gear, the connection set of the capacitance-adjustable transformer is：Yyn0+
D1, wherein the bind mode that Yyn0+d1 is used to identify the high-voltage winding is Y, and the bind mode of the low pressure winding is string,
Bind mode with the balance winding is d1；Wherein, d0 and d1 is the two ways of d.
Optionally, carrying out change press operation based on the determining connection set includes：According to the voltage of the low pressure winding
Grade chooses the nominal voltage of the balance winding；According to the nominal voltage of the balance winding of selection, and determining institute
It states connection set and carries out change press operation.
In embodiments of the present invention, under the premise of not changing capacity transfer basic principle, in such a way that setting balances winding,
Pass through provide it is a kind of including high-voltage winding, low pressure winding and balance winding capacitance-adjustable transformer, wherein high-voltage winding, low pressure around
It is d that group and balance winding, which use concentric arrangement, balance winding coupling, has reached and has promoted loaded capacity-regulated transformer energy-saving effect
Purpose, to realize the technology effect that high and low rated capacity gear all has the ability of very strong tolerance three-phase imbalance load
Fruit, and then solve since low capacity gear existing for capacitance-adjustable transformer in the related technology is resistant to unbalanced load energy force difference, it makes
At the ineffective technical problem of transformer energy saving.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and is constituted part of this application, this hair
Bright illustrative embodiments and their description are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the structural schematic diagram of capacitance-adjustable transformer according to the ... of the embodiment of the present invention；
Fig. 2 is capacitance-adjustable transformer mesohigh winding 12, low pressure winding 14 and balance winding 16 according to the ... of the embodiment of the present invention
Structural schematic diagram one；
Fig. 3 is capacitance-adjustable transformer mesohigh winding 12, low pressure winding 14 and balance winding 16 according to the ... of the embodiment of the present invention
Structural schematic diagram two；
Fig. 4 is the method according to the ... of the embodiment of the present invention for based on capacitance-adjustable transformer described in any of the above-described become press operation
Flow chart；
Fig. 5 is the connection set structural schematic diagram that capacitance-adjustable transformer according to the ... of the embodiment of the present invention operates in high power capacity gear
One；
Fig. 6 is the connection set structural schematic diagram that capacitance-adjustable transformer according to the ... of the embodiment of the present invention operates in high power capacity gear
Two；
Fig. 7 is the connection set structural schematic diagram that capacitance-adjustable transformer according to the ... of the embodiment of the present invention operates in low capacity gear
One；
Fig. 8 is the connection set structural schematic diagram that capacitance-adjustable transformer according to the ... of the embodiment of the present invention operates in low capacity gear
Two；
Fig. 9 is capacitance-adjustable transformer balance winding casing tube arrangement schematic diagram according to the ... of the embodiment of the present invention.
Specific implementation mode
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The every other embodiment that member is obtained without making creative work should all belong to the model that the present invention protects
It encloses.
It should be noted that term " first " in description and claims of this specification and above-mentioned attached drawing, "
Two " etc. be for distinguishing similar object, without being used to describe specific sequence or precedence.It should be appreciated that using in this way
Data can be interchanged in the appropriate case, so as to the embodiment of the present invention described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that cover
It includes to be not necessarily limited to for example, containing the process of series of steps or unit, method, system, product or equipment to cover non-exclusive
Those of clearly list step or unit, but may include not listing clearly or for these processes, method, product
Or the other steps or unit that equipment is intrinsic.
One side according to the ... of the embodiment of the present invention provides a kind of device embodiment of capacitance-adjustable transformer.Fig. 1 is basis
The structural schematic diagram of the capacitance-adjustable transformer of the embodiment of the present invention, as shown in Figure 1, the capacitance-adjustable transformer includes：High-voltage winding 12 is low
Press winding 14, and balance winding 16, wherein high-voltage winding 12, low pressure winding 14 and balance winding 16 use concentric arrangement, put down
Weighing apparatus winding coupling is d.
In embodiments of the present invention, under the premise of not changing capacity transfer basic principle, using the side of setting balance winding 16
Formula, it is a kind of including high-voltage winding 12, low pressure winding 14 and the capacitance-adjustable transformer for balancing winding 16 by providing, wherein high voltage winding
Group 12, low pressure winding 14 and balance winding 16 use concentric arrangement, and it is d that balance winding 16, which is coupled, and having reached promotion has load to adjust
The purpose for holding transformer energy saving effect, very strong tolerance three-phase imbalance is all had to realize high and low rated capacity gear
The technique effect of the ability of load, and then solve due to low capacity gear tolerance existing for capacitance-adjustable transformer in the related technology not
Balance load capacity is poor, caused by the ineffective technical problem of transformer energy saving.
Preferably, high-voltage winding 12, low pressure winding 14 and balance winding 16 may include using concentric arrangement：High voltage winding
12 outermost of the setting far from axle center of group, low pressure winding 14 are positioned close to the most inner side in axle center, and balance winding 16 is arranged in height
It presses between winding 12 and low pressure winding 14.Fig. 2 be capacitance-adjustable transformer mesohigh winding 12 according to the ... of the embodiment of the present invention, low pressure around
The structural schematic diagram one of group 14 and balance winding 16, as shown in Fig. 2, high-voltage winding 1, low pressure winding 2 and balance winding 3 are using same
Axle center arranges that the setting of high-voltage winding 12 is in winding most outside diameter, and the setting of balance winding 16 is in centre, including low pressure winding 14 is arranged
Diameter side (close to core side).Three windings are in the horizontal centres arrangement such as short transverse use.
Further, high-voltage winding 12, low pressure winding 14 and balance winding 16 can also include using concentric arrangement：It is high
The outermost far from axle center is arranged in pressure winding 12, and balance winding 16 is positioned close to the most inner side in axle center, and low pressure winding 14 is arranged
Between high-voltage winding 12 and balance winding 16.Fig. 3 is capacitance-adjustable transformer mesohigh winding 12 according to the ... of the embodiment of the present invention, low
It presses winding 14 and balances the structural schematic diagram two of winding 16, as shown in figure 3, high-voltage winding 12, low pressure winding 14 and balance winding
16 use concentric arrangement, the setting of high-voltage winding 12 to balance winding 16 in centre in winding most outside diameter, the setting of low pressure winding 14
Setting is internal side diameter (close to core side).Three windings are in the horizontal centres arrangement such as short transverse use.
Specifically, the single layer or double-layer circular core structure of single paper bag flat type copper wire coiling may be used in balance winding 16, together
When, the multi-layer cylindrical structure of single enameled wire coiling may be used in high-voltage winding 12, and more paper may be used in low pressure winding 14
Three layers of cylinder mode of packet flat type copper wire coiling.
Preferably, it is calculated according to analysis, the capacity for balancing winding 16 can be the three of low capacity gear rated capacity
/ mono-, further, balance 16 nominal voltage of winding is chosen according to 14 voltage class of low pressure winding, and transformer station high-voltage side bus is in low appearance
Gear is measured, nominal voltage is about 42% low-voltage rated voltage.
Meanwhile the capacitance-adjustable transformer is in the process of running, when high-voltage winding 12 operates in high power capacity gear, is coupled for D；Fortune
Row is coupled for Y, is arranged in winding outermost in low capacity gear.When low pressure winding 14 operates in low capacity gear, it is coupled and is
And；When operating in low capacity gear, be coupled for string, setting in the windings between or most inner side.Balance winding 16 operates in high and low appearance
Measure gear when, connection is d, setting in the windings between or most inner side.Specifically, balance winding 16 be coupled can be " opening D " or
The form of " closing D ", wherein above-mentioned " opening D " is that first and last connects balance winding 16 successively, will wherein one mutually first head and another phase tail head
Open circuit, is connected to casing by lead and is drawn out to outside, and short circuit grounding is carried out again in outside；Above-mentioned " closing D " is balance winding 16
First and last connects successively, then balance winding 16 is grounded in capacitance-adjustable transformer.
Preferably, the capacitance-adjustable transformer of any of the above item can also include：It is high-voltage winding entrance bushing, capacitance switch, low
Press winding entrance bushing and balance winding entrance bushing, wherein high-voltage winding entrance bushing is connected with capacitance switch；Capacitance switch
It is connected with high-voltage winding 12 and low pressure winding 14, low pressure winding entrance bushing is connect with capacitance switch, balances winding entrance bushing
It is connected with another phase tail head with the balance wherein one mutually first head of winding 16.
According to embodiments of the present invention, a kind of side based on any of the above-described capacitance-adjustable transformer become press operation is additionally provided
Method embodiment, it should be noted that step shown in the flowchart of the accompanying drawings can be in such as a group of computer-executable instructions
Computer system in execute, although also, logical order is shown in flow charts, in some cases, can be with
Shown or described step is executed different from sequence herein.
Fig. 4 is the stream of the method according to the ... of the embodiment of the present invention for based on any of the above-described capacitance-adjustable transformer become press operation
Cheng Tu, as shown in figure 4, this method comprises the following steps：
Step S402 determines the connection set of capacitance-adjustable transformer, wherein the connection set of capacitance-adjustable transformer includes：High pressure
The bind mode of the bind mode of winding, the bind mode of low pressure winding, and balance winding；
Step S404 carries out change press operation based on determining connection set.
Through the above steps, the connection set according to capacitance-adjustable transformer may be implemented, wherein specifically include high-voltage winding
The bind mode of bind mode, the bind mode of low pressure winding and balance winding, to carry out the change press operation of capacitance-adjustable transformer, into
And improve supply voltage quality, power supply capacity, tolerance unbalanced load ability and the energy-saving effect of capacitance-adjustable transformer.
Preferably, determine that the connection set of capacitance-adjustable transformer may include：High power capacity gear is operated in capacitance-adjustable transformer
In the case of, the connection set of capacitance-adjustable transformer is：Dyn11+d0, wherein Dyn11+d0 is used to identify the connection of high-voltage winding
Mode is D, and the bind mode of low pressure winding is that simultaneously, and the bind mode of balance winding is d0；It is operated in capacitance-adjustable transformer low
In the case of capacity gear, the connection set of capacitance-adjustable transformer is：Yyn0+d1, wherein Yyn0+d1 is for identifying high-voltage winding
Bind mode be Y, the bind mode of low pressure winding is string, and the bind mode of balance winding is d1；Wherein, d0 and d1 is d
Two ways.
Fig. 5 is the connection set structural schematic diagram that capacitance-adjustable transformer according to the ... of the embodiment of the present invention operates in high power capacity gear
One, as shown in figure 5, capacitance-adjustable transformer operates in high power capacity gear, connection set Dyn11+d0, high-voltage winding is adjusted by having to carry
Hold switch and connect into D (A-Z, B-X, C-Y), low pressure winding by loaded capacity-regulated switch connect into it is in parallel (I sections are in parallel with II sections,
Connect again with III sections), balance winding is connected using " opening D ", by connecting lead wire, connects xp-bp, yp-cp, the first head ap of A phase and
The last head zp leads of C phases are connected to casing extraction, then short circuit grounding.
Fig. 6 is the connection set structural schematic diagram that capacitance-adjustable transformer according to the ... of the embodiment of the present invention operates in high power capacity gear
Two, as shown in fig. 6, its catenation principle is identical as Fig. 5, connection set is all Dyn11+d0, and high-voltage winding is adjusted again by having to carry
Hold switch and connects into D (A-Z, B-X, C-Y), low pressure winding connects into that in parallel (I section and II sections simultaneously again by loaded capacity-regulated switch
Connection, then connect with III sections), unlike, balance winding is connected using " closing D ", by connecting lead wire, connects ap-zp, bp-
Then ap is passed through folder short circuit grounding by yp, cp-zp.
Fig. 7 is the connection set structural schematic diagram that capacitance-adjustable transformer according to the ... of the embodiment of the present invention operates in low capacity gear
One, as shown in fig. 7, capacitance-adjustable transformer operates in low capacity gear, connection set Yyn0+d1, high-voltage winding 1 is adjusted by having to carry
Hold switch and connect into Y (X-Y-Z), low pressure winding 2 by loaded capacity-regulated switch connect into series connection (I sections are connected with II sections, then with
III sections of series connection), balance winding is connected using " opening D ", by connecting lead wire, connects Xp-bp, yp-cp, the first head ap and C phases of A phases
Last head zp leads are connected to casing extraction, then short circuit grounding.
Fig. 8 is the connection set structural schematic diagram that capacitance-adjustable transformer according to the ... of the embodiment of the present invention operates in low capacity gear
Two, as shown in figure 8, its catenation principle is identical as Fig. 7, connection set Yyn0+d1, high-voltage winding 1 passes through loaded capacity-regulated switch
Connect into Y (X-Y-Z), low pressure winding 2 by loaded capacity-regulated switch connect into series connection (I sections are connected with II sections, then with III sections of strings
Connection), balance winding is connected using " closing D ", by connecting lead wire, connects ap-zp, bp-yp, cp-zp, ap is then passed through folder
Short circuit grounding.
Preferably, carrying out change press operation based on determining connection set may include：According to the voltage class of low pressure winding
Choose the nominal voltage of balance winding；Become according to the nominal voltage of the balance winding of selection, and the connection set determined
Press operation.
According to foregoing invention embodiment and each preferred embodiment, the capacitance-adjustable transformer based on any of the above-described and related transformation
The method of operation realizes under the premise of not changing capacity transfer basic principle, balances winding by setting, realizes high and low
Rated capacity gear, the ability for all having very strong tolerance three-phase imbalance load have such as compared with traditional capacitance-adjustable transformer
Lower advantage：
1. when transformer station high-voltage side bus is in low capacity gear, it is connected as the balance winding of d because being provided with, is provided for zero-sequence current
Access, the magnetic potential that the zero sequence magnetic potential of generation is generated with low-pressure side zero-sequence current balance each other, and only induce small zero sequence electromotive force,
After being superimposed with positive sequence voltage, neutral point voltage drift can be ignored, and supply voltage quality is promoted.
2. when transformer station high-voltage side bus is in low capacity gear, transformer neutral point drift can be ignored, and promote transformer tolerance
Unbalanced load ability level.
It also may operate at 3. control strategy is not required to setting laod unbalance degree threshold value when laod unbalance degree is larger
Low capacity gear effectively promotes the energy-saving effect of loaded capacity-regulated transformer.
4. when transformer station high-voltage side bus in high power capacity gear, low-pressure side laod unbalance, the zero sequence of generation, by d connect balance around
Group connects winding with high-pressure side D and is shunted, further tolerance unbalanced load energy of the promotion transformer station high-voltage side bus in high power capacity gear
Power.
5. traditional capacitance-adjustable transformer, high power capacity gear is operated in, when low-pressure side laod unbalance, because zero sequence fluxes are in high pressure
D induces zero-sequence current in connecing, and is superimposed operating current, and high power capacity gear carrying load ability is made to decline.Patent setting d of the present invention connects
Winding is balanced, the zero-sequence current of high voltage D connection winding can be shared, promote the power supply capacity of transformer.
Fig. 9 is capacitance-adjustable transformer balance winding casing tube arrangement schematic diagram according to the ... of the embodiment of the present invention, as shown in figure 9, adjusting
It includes high-voltage winding 91 to hold in transformer, and low pressure winding 92 balances winding 93, bushing 94, and low-tension bushing 95 balances winding
Casing 96 is below described in detail the capacitance-adjustable transformer.
Specifically, the capacitance-adjustable transformer uses " opening D " connection type, balance winding ap connect with zp lead to balance around
Group casing, arrangement is with low-tension bushing homonymy and positioned at a horizontal line, when towards low-pressure side, is located on the left of low pressure c phases, two sets
Tube spacing is 45mm with low pressure c phase casing minimum air insulation clear distances by casing minimum mechanical distance plus 20mm.
The capacitance-adjustable transformer can also successively be connected in inside transformer as shown in Figure 6 and Figure 8 using " closing D " connection type
Ap-zp, bp-yp, cp-zp are met, ap is then passed through into folder short circuit grounding.
The embodiments of the present invention are for illustration only, can not represent the quality of embodiment.
In the above embodiment of the present invention, all emphasizes particularly on different fields to the description of each embodiment, do not have in some embodiment
The part of detailed description may refer to the associated description of other embodiment.
In several embodiments provided herein, it should be understood that disclosed technology contents can pass through others
Mode is realized.Wherein, the apparatus embodiments described above are merely exemplary, for example, the unit division, Ke Yiwei
A kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Between coupling, direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some interfaces, unit or module
It connects, can be electrical or other forms.
The unit illustrated as separating component may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple
On unit.Some or all of unit therein can be selected according to the actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.Above-mentioned integrated list
The form that hardware had both may be used in member is realized, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can be stored in a computer read/write memory medium.Based on this understanding, technical scheme of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or network equipment etc.) execute each embodiment the method for the present invention whole or
Part steps.And storage medium above-mentioned includes：USB flash disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. are various can to store program code
Medium.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of capacitance-adjustable transformer, which is characterized in that including：High-voltage winding, low pressure winding, and balance winding, wherein the height
Winding is pressed, it is d that the low pressure winding and the balance winding, which use concentric arrangement, the balance winding coupling,.
2. capacitance-adjustable transformer according to claim 1, which is characterized in that the high-voltage winding, the low pressure winding and institute
State balance winding includes using concentric arrangement：Outermost of the high-voltage winding setting far from the axle center, the low pressure around
Group is positioned close to the most inner side in the axle center, the balance winding setting the high-voltage winding and the low pressure winding it
Between.
3. capacitance-adjustable transformer according to claim 1, which is characterized in that the high-voltage winding, the low pressure winding and institute
State balance winding includes using concentric arrangement：Outermost of the high-voltage winding setting far from the axle center, the balance around
Group is positioned close to the most inner side in the axle center, the low pressure winding setting the high-voltage winding and the balance winding it
Between.
4. capacitance-adjustable transformer according to claim 1, which is characterized in that the balance winding uses single paper bag flat type copper wire
The single layer or double-layer circular core structure of coiling.
5. capacitance-adjustable transformer according to claim 1, which is characterized in that the capacity of the balance winding is low capacity gear
The one third of rated capacity.
6. capacitance-adjustable transformer according to claim 1, which is characterized in that the balance winding coupling is " opening D " or " closes
D ", wherein described " opening D " is that first and last connects the balance winding successively, and wherein one mutually first head is opened a way with another phase tail head, is led to
It crosses lead and is connected to casing and be drawn out to outside, short circuit grounding is carried out again in outside；Described " closing D " is that the balance winding is first successively
End connection, then the balance winding is grounded in the capacitance-adjustable transformer.
7. capacitance-adjustable transformer according to any one of claim 1 to 6, which is characterized in that further include：High-voltage winding inlet wire
Casing, capacitance switch, low pressure winding entrance bushing and balance winding entrance bushing, wherein the high-voltage winding entrance bushing with
The capacitance switch is connected；The capacitance switch is connected with the high-voltage winding and the low pressure winding, the low pressure winding into
Thread casing is connect with the capacitance switch, the balance winding entrance bushing and the wherein one mutually first head of balance winding with it is another
Phase tail head is connected.
8. a kind of method based on any one of claim 1 to 7 capacitance-adjustable transformer become press operation, feature exist
In, including：
Determine the connection set of the capacitance-adjustable transformer, wherein the connection set of the capacitance-adjustable transformer includes：
The bind mode of the high-voltage winding, the bind mode of the bind mode of the low pressure winding and the balance winding；
Change press operation is carried out based on the determining connection set.
9. according to the method described in claim 8, it is characterized in that, determining the connection set packet of the capacitance-adjustable transformer
It includes：
In the case where the capacitance-adjustable transformer operates in high power capacity gear, the connection set of the capacitance-adjustable transformer is：Dyn11
+ d0, wherein the bind mode that Dyn11+d0 is used to identify the high-voltage winding is D, and the bind mode of the low pressure winding is
And and it is described balance winding bind mode be d0；
In the case where the capacitance-adjustable transformer operates in low capacity gear, the connection set of the capacitance-adjustable transformer is：Yyn0+
D1, wherein the bind mode that Yyn0+d1 is used to identify the high-voltage winding is Y, and the bind mode of the low pressure winding is string,
Bind mode with the balance winding is d1；
Wherein, d0 and d1 is the two ways of d.
10. according to the method described in claim 8, it is characterized in that, carrying out change press operation based on the determining connection set
Including：
The nominal voltage of the balance winding is chosen according to the voltage class of the low pressure winding；
According to the nominal voltage of the balance winding of selection, and the connection set determined carries out change press operation.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116798752A (en) * | 2023-07-04 | 2023-09-22 | 山东泰开变压器有限公司 | Vehicle-mounted transformer for testing of convertible coupling group and use method |
| JP7461596B2 (en) | 2022-07-25 | 2024-04-04 | 雲南電網有限責任公司楚雄供電局 | Automatic capacity calibration method for distribution transformers at voltage levels below 315 kV |
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| CN203232790U (en) * | 2013-05-08 | 2013-10-09 | 特变电工股份有限公司 | Converter transformer for polycrystalline silicon |
| CN104616872A (en) * | 2015-02-11 | 2015-05-13 | 国网上海市电力公司 | On-load capacitance adjustment transformer |
| CN205211561U (en) * | 2015-12-28 | 2016-05-04 | 保定天威保变电气股份有限公司 | High pressure star angular transformation on -load voltage -regulating transformer's winding wiring structure |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203232790U (en) * | 2013-05-08 | 2013-10-09 | 特变电工股份有限公司 | Converter transformer for polycrystalline silicon |
| CN104616872A (en) * | 2015-02-11 | 2015-05-13 | 国网上海市电力公司 | On-load capacitance adjustment transformer |
| CN205211561U (en) * | 2015-12-28 | 2016-05-04 | 保定天威保变电气股份有限公司 | High pressure star angular transformation on -load voltage -regulating transformer's winding wiring structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP7461596B2 (en) | 2022-07-25 | 2024-04-04 | 雲南電網有限責任公司楚雄供電局 | Automatic capacity calibration method for distribution transformers at voltage levels below 315 kV |
| CN116798752A (en) * | 2023-07-04 | 2023-09-22 | 山东泰开变压器有限公司 | Vehicle-mounted transformer for testing of convertible coupling group and use method |
| CN116798752B (en) * | 2023-07-04 | 2024-06-04 | 山东泰开变压器有限公司 | Vehicle-mounted transformer for testing of convertible coupling group and use method |
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