CN108346506A - A kind of determination method of potential device and series transformer umber of turn - Google Patents
A kind of determination method of potential device and series transformer umber of turn Download PDFInfo
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- CN108346506A CN108346506A CN201810425349.8A CN201810425349A CN108346506A CN 108346506 A CN108346506 A CN 108346506A CN 201810425349 A CN201810425349 A CN 201810425349A CN 108346506 A CN108346506 A CN 108346506A
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004804 winding Methods 0.000 claims abstract description 324
- 238000010079 rubber tapping Methods 0.000 claims abstract description 35
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 20
- 230000008859 change Effects 0.000 claims abstract description 19
- 230000001105 regulatory effect Effects 0.000 claims description 15
- 230000005611 electricity Effects 0.000 claims description 11
- 230000007935 neutral effect Effects 0.000 claims description 10
- 230000004907 flux Effects 0.000 description 10
- 230000008901 benefit Effects 0.000 description 3
- 239000002828 fuel tank Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002964 excitative effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
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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
- 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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/20—Measuring number of turns; Measuring transformation ratio or coupling factor of windings
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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
- H01F27/2828—Construction of conductive connections, of leads
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- Power Engineering (AREA)
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- Supply And Distribution Of Alternating Current (AREA)
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- Housings And Mounting Of Transformers (AREA)
Abstract
This application provides a kind of determination methods of potential device and series transformer umber of turn, are related to power supply technical field, including：Main transformer and series transformer；Main transformer includes：The first iron core and transformer winding being set on the first iron core, tap-changing windings component and output winding；Tap-changing windings component is connected with transformer winding, in the HV voltage signal fluctuation that power supply source supplies, being adjusted in main transformer per the voltage value of circle winding by changing the umber of turn of itself；Output winding is connected in series with series transformer, the low voltage signal after voltage value for adjusting every circle winding to series transformer output；Series transformer is connect with tap-changing windings modules in parallel, for the ratio according to tapping voltage value and tapping voltage value and the voltage change of low pressure electric signal after tap-changing windings component pressure regulation, voltage compensation is carried out to the low voltage signal of output, to keep the low voltage signal of output winding output constant.
Description
Technical field
This application involves power supply technical fields, in particular to a kind of potential device and series transformer winding
The determination method of the number of turns.
Background technology
In the power system, transmission of the electric energy between power plant to user is completed usually using transformer.Due to user
The input of electrical equipment or excision can usually be such that network voltage fluctuates, this just generates shadow to the electrical equipment being currently running
It rings.For the problem, the solution of purpose is to utilize adjustable transformer when voltage fluctuates using adjustable transformer
The voltage of fluctuation is compensated.
Auto-transformer improves the economy of product especially due to that can reduce product material consumption, idling load-loss
It is on-road efficiency, pressure regulation is carried out to be widely used as adjustable transformer.Currently, switch in auto-transformer be located at series connection around
Group end (high pressure pressure regulation) or low pressure line end (high pressure pressure regulation), switch over the ground and and each phase insulation it is horizontal high, usually want
Using 3 single-phase switch, it is of high cost to considerably increase switch.In order to solve the problems, such as that 3 single-phase switch bring of high cost, mesh
Preceding generally use neutral point voltage regulating mode can also be significantly by three-phase integrated switch insulation level using three-phase integrated switch
It reduces, to greatly reduce switch cost, and the specified gear flux density of product is relatively low, and no-load loss is low, and economic benefit is apparent.But
It is that output voltage can be caused to fluctuate using neutral point voltage regulating mode, cannot be satisfied user demand, this is current industry problems.
Invention content
In view of this, the embodiment of the present application is designed to provide a kind of potential device and series transformer umber of turn
Determine method, when the main magnetic flux of main transformer changes, series transformer can mend the main magnetic flux of variation
It repays, to ensure to be supplied to the output voltage of user constant.
In a first aspect, the embodiment of the present application provides a kind of potential device, including：Main transformer and series transformer；Institute
Stating main transformer includes：First iron core and the transformer winding being set on first iron core, tap-changing windings component
With output winding；
The tap-changing windings component is connected with the transformer winding, the HV voltage signal for being supplied in power supply source
When fluctuation, adjusted in the main transformer per the voltage value of circle winding by changing the umber of turn of itself；
The output winding is connected in series with the series transformer, for being adjusted to series transformer output per circle
Low voltage signal after the voltage value of winding；
The series transformer is connect with the tap-changing windings modules in parallel, for according to the tap-changing windings component pressure regulation
The ratio of tapping voltage value and the tapping voltage value afterwards and the voltage change of the low pressure electric signal, to the low of output
Voltage signal is pressed to carry out voltage compensation, to keep the low voltage signal that the output winding exports constant.
With reference to first aspect, the embodiment of the present application provides the first possible embodiment of first aspect, wherein institute
It includes series connection winding and public winding to state transformer winding；
The head end of the series connection winding with power supply source for connecting, the end of the series connection winding and the public winding
Head end connects；The end of the public winding is connected with the tap-changing windings component.
The possible embodiment of with reference to first aspect the first, the embodiment of the present application provide second of first aspect
Possible embodiment, wherein the potential device further includes neutral bushing；The tap-changing windings component include pressure regulation around
Group and switch terminal；
The first end of the tap-changing windings is connect with the input terminal of the switch terminal, the second end of the tap-changing windings with
The neutral bushing connection, multiple selection ends of the tap-changing windings are respectively used to connect with the output end of the switch terminal
It connects；The input terminal of the switch terminal is also connected with the end of the public winding.
Second of possible embodiment with reference to first aspect, the embodiment of the present application provide the third of first aspect
Possible embodiment, wherein the series transformer includes：Second iron core, secondary winding and field winding；It is described it is secondary around
Group and the field winding are sleeved on second iron core；
The head end of the field winding is connected with the input terminal of the switch terminal, the end of the field winding and institute
The output end for stating switch terminal is connected；
The end of the secondary winding is connected with the head end of the output winding, the head end of the secondary winding be used for
Electrical equipment connects.
The third possible embodiment with reference to first aspect, the embodiment of the present application provide the 4th kind of first aspect
Possible embodiment, wherein the service voltage of the power supply source supply is three-phase electricity, and each phase electricity is correspondingly connected with transformer
Winding, tap-changing windings component, output winding, secondary winding and field winding；
The head end of the electric corresponding secondary winding of each phase is connected with the out-phase end of the output winding of out-phase.
With reference to first aspect, the embodiment of the present application provides the 5th kind of possible embodiment of first aspect, wherein institute
It states main transformer and the series transformer is respectively positioned in oil tank of transformer.
With reference to first aspect, the embodiment of the present application provides the 6th kind of possible embodiment of first aspect, wherein institute
The potential device stated further includes voltage than checking；
The voltage is than checking, the magnitude of a voltage fluctuation of the HV voltage signal for being supplied according to the power supply source and institute
The rated voltage ratio for stating main transformer selects circle to be regulated from the corresponding the number of turns adjustable range of the tap-changing windings component
Number.
Second aspect, the embodiment of the present application also provides a kind of determination sides of series transformer umber of turn in potential device
Method, the method are applied to the potential device described in above-mentioned first aspect, the method includes：
According to the performance parameter of main transformer, the operating parameter information in the main transformer is determined；The running parameter
Information includes：Umber of turn, tapping voltage value and load voltage value；
According to the umber of turn and tapping voltage value in the main transformer, tap-changing windings in the main transformer are determined
Adjustable umber of turn；
According to the number of turns for exporting winding in the adjustable umber of turn, load voltage value, the main transformer and preset
Output low voltage signal, determine the turn ratio of secondary winding and field winding in the series transformer；
According to the turn ratio of secondary winding and field winding in the tapping voltage value and the series transformer, determine
The number of turns of secondary winding and field winding in the series transformer.
In conjunction with second aspect, the embodiment of the present application provides the first possible embodiment of second aspect, wherein institute
State according to the umber of turn and tapping voltage value in the main transformer, determine tap-changing windings in the main transformer it is adjustable around
Group the number of turns, including：
According to equation H ÷ (S+C+R1)=Xmax ÷ (C+R1), calculates the maximum of tap-changing windings in the main transformer and adjust
Save the number of turns value；Wherein, R1 indicates that maximal regulated the number of turns value of tap-changing windings in the main transformer, S indicate series connection umber of turn,
C indicates that public winding the number of turns, Xmax indicate that most plus tapping voltage, Xmin indicate most minus tapping voltage；
According to equation H ÷ (S+C-R2)=Xmin ÷ (C-R2), the most ditty of tap-changing windings in the main transformer is calculated
Save the number of turns value；Wherein, R2 indicates minimal adjustment the number of turns value of tap-changing windings in the main transformer；Wherein, the adjustable winding
The number of turns is located between maximal regulated the number of turns value R1 of tap-changing windings and minimal adjustment the number of turns value R2 of the tap-changing windings.
In conjunction with second aspect, the embodiment of the present application provides second of possible embodiment of second aspect, wherein institute
It states according to the number of turns of output winding and preset output in the adjustable umber of turn, load voltage value, the main transformer
Low voltage signal determines the turn ratio of secondary winding and field winding in the series transformer, including：
According to equationDetermine secondary winding in the series transformer
With the turn ratio of field winding；Wherein, SR indicates the turn ratio of secondary winding and field winding in the series transformer, S tables
Show that the number of turns for winding of connecting in main transformer, C indicate that the number of turns of public winding in main transformer, T indicate to export in main transformer
The number of turns of winding, Y indicate to export the voltage of winding in main transformer.
A kind of determination method of potential device and series transformer umber of turn provided by the embodiments of the present application, works as power supply source
When the high-voltage signal fluctuation of supply, tap-changing windings component is adjusted in main transformer by changing the umber of turn of itself per circle
The voltage value of winding, corresponding, the low voltage signal of output winding output can change, at this point, series transformer can
According to the ratio of tapping voltage value and tapping voltage value and the voltage change of low pressure electric signal after tap-changing windings component pressure regulation
Value carries out voltage compensation, to keep the low voltage signal of output winding output to the low voltage signal of output winding output
It is constant.
To enable the above objects, features, and advantages of the application to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
It, below will be to needed in the embodiment attached in order to illustrate more clearly of the technical solution of the embodiment of the present application
Figure is briefly described, it should be understood that the following drawings illustrates only some embodiments of the application, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 shows a kind of schematic diagram for potential device that the embodiment of the present application is provided.
Fig. 2 shows a kind of structural schematic diagrams for potential device that the embodiment of the present application is provided.
Fig. 3 shows the determination side of series transformer umber of turn in a kind of potential device that the embodiment of the present application is provided
The flow chart of method.
Icon：1, main transformer；2, series transformer；3, series connection winding；4, public winding；5, tap-changing windings；6, it exports
Winding；7, the first iron core；8, secondary winding；9, field winding；10, the second iron core；11, fuel tank；
Specific implementation mode
To keep the purpose, technical scheme and advantage of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
Middle attached drawing, technical solutions in the embodiments of the present application are clearly and completely described, it is clear that described embodiment is only
It is some embodiments of the present application, instead of all the embodiments.The application being usually described and illustrated herein in the accompanying drawings is real
Applying the component of example can be arranged and designed with a variety of different configurations.Therefore, below to the application's for providing in the accompanying drawings
The detailed description of embodiment is not intended to limit claimed scope of the present application, but is merely representative of the selected reality of the application
Apply example.Based on embodiments herein, institute that those skilled in the art are obtained without making creative work
There is other embodiment, shall fall in the protection scope of this application.
The embodiment of the present application provides a kind of potential device, as depicted in figs. 1 and 2, including：Main transformer 1 and series connection become
Depressor 2；Main transformer 1 includes：First iron core 7 and the transformer winding being set on the first iron core 7, tap-changing windings group
Part and output winding 6；
Tap-changing windings component is connected with transformer winding, is used in the HV voltage signal fluctuation that power supply source supplies,
It is adjusted in main transformer 1 per the voltage value of circle winding by changing the umber of turn of itself；
Output winding 6 is connected in series with series transformer 2, for adjusting the electricity per circle winding to the output of series transformer 2
Low voltage signal after pressure value；
Series transformer 2 is connect with tap-changing windings modules in parallel, for according to the tap electricity after tap-changing windings component pressure regulation
The ratio of pressure value and the tapping voltage value and the voltage change of the low pressure electric signal, to the low voltage signal of output
Voltage compensation is carried out, to keep the low voltage signal that the output winding exports constant.
In the embodiment of the present application, main transformer is single-circuit transformer, and transformer winding includes series connection winding 3 and public winding
4；For being connect with power supply source, the end of series connection winding 3 is connect the head end of series connection winding 3 with the head end of public winding 4；It is public around
The end of group 4 is connected with tap-changing windings component.
In the embodiment of the present application, above-mentioned potential device is the on-load voltage regulation of low-pressure side, and switch is located at neutral point position.This
In, (here, tap-changing windings component adjusts the voltage value in main transformer 1 per circle winding by changing the umber of turn of itself
Voltage value in series connection winding 3, public winding 4 and tap-changing windings component per circle winding) change.The embodiment of the present application carries
Further include that voltage ratio is checked in the potential device of confession, voltage is than checking, the high tension voltage letter for being supplied according to the power supply source
Number magnitude of a voltage fluctuation and main transformer 1 rated voltage ratio, adjust model from the corresponding the number of turns of the tap-changing windings component
Enclose middle selection the number of turns to be regulated.
In a specific embodiment, tap-changing windings component has multiple regulation stalls, in the high tension voltage of power supply source supply
When signal fluctuates, the pressure regulation gear of tap-changing windings component can be transferred to the number of turns to be regulated of voltage than checking selection by user
Corresponding gear, at this point, since, per the voltage value of circle winding, the output voltage of output winding 6 changes in main transformer 1,
And then the main magnetic flux of main transformer 1 is caused to change, in the embodiment of the present application, tune can be known by series transformer 2
Press the tapping voltage value after winding assembly pressure regulation and the tapping voltage value and the voltage change of the low pressure electric signal
Ratio carries out voltage compensation to the low voltage signal of output, with the low voltage signal constant for keeping the output winding to export
It is fixed.Here, the ratio of the voltage change of low pressure electric signal be after transferring the files export winding 6 output low voltage signal with it is constant
The ratio of low voltage signal.
It, can be by series transformer 2 to the low pressure of the output output of winding 6 in potential device provided by the embodiments of the present application
Voltage signal carries out voltage compensation, so that the low voltage signal of output is kept constant.Here constant refers to output
Low voltage signal is located at a preset threshold range, and the low voltage signal value exported in other words is inclined with standard output value
Difference is completely less than preset threshold value.
As shown in Fig. 2, potential device provided by the embodiments of the present application, main transformer 1 and series transformer 2 are respectively positioned on transformation
In device fuel tank 11.
Potential device provided by the embodiments of the present application further includes neutral bushing；Tap-changing windings component includes tap-changing windings 5
And switch terminal；
The first end of tap-changing windings 5 and the input terminal of switch terminal connect, the second end and neutral bushing of tap-changing windings 5
Connection, multiple selection ends of tap-changing windings 5 are respectively used to connect with the output end of switch terminal；The input terminal of switch terminal also with
The end of public winding 4 is connected.
In the embodiment of the present application, the multiple of tap-changing windings 5 select end for multiple switch gear, and each switch position is right respectively
The different umber of turns of tap-changing windings 5 should be adjusted.
Potential device provided by the embodiments of the present application, series transformer 2 include：Second iron core 10, secondary winding 8 and excitatory
Winding 9；Secondary winding 8 and field winding 9 are sleeved on the second iron core 10；
The head end of field winding 9 is connected with the input terminal of switch terminal, the end of field winding 9 and switch terminal it is defeated
Outlet is connected；
The end of secondary winding 8 is connected with the head end of output winding 6, and the head end of secondary winding 8 is used for and electrical equipment
Connection.
In the embodiment of the present application, when user adjusts the switch position of tap-changing windings component, per circle winding in main transformer 1
Voltage value change, and then the main magnetic flux of main transformer 1 changes.In the embodiment of the present application, because of series-transformer
The field winding 9 of device 2 is in parallel with tap-changing windings 5, and the secondary winding 8 and output winding 6 of series transformer 2 concatenate, series-transformer
Device 2 can know the tapping voltage value after 5 pressure regulation of tap-changing windings, the preset turn ratio that field winding 9 has with secondary winding 8
With transfer the files after tapping voltage value it is corresponding with the ratio of voltage change of low pressure electric signal, and then when main transformer 1
When main magnetic flux changes, series transformer 2 can compensate the low pressure electric signal that output winding 6 exports, to real
Now the output voltage of output winding 6 is constant.
As shown in Figure 1, potential device provided by the embodiments of the present application, the service voltage of power supply source supply is three-phase electricity, often
One phase electricity is correspondingly connected with transformer winding, tap-changing windings component, output winding 6, secondary winding 8 and field winding 9；
The head end of the corresponding secondary winding of each phase electricity 8 is connected with the out-phase end of the output winding 6 of out-phase.
A kind of determination method of potential device and series transformer umber of turn provided by the embodiments of the present application, works as power supply source
When the high-voltage signal fluctuation of supply, tap-changing windings component is adjusted every in main transformer 1 by changing the umber of turn of itself
The voltage value of circle winding, corresponding, the low voltage signal that output winding 6 exports can change, at this point, series transformer 2
It can be according to the voltage change of tapping voltage value and tapping voltage value and low pressure electric signal after tap-changing windings component pressure regulation
Ratio, to output winding output low voltage signal carry out voltage compensation, with keep output winding output low voltage
Signal is constant.
As depicted in figs. 1 and 2, potential device provided by the embodiments of the present application is illustrated below, in the first iron core 7
The tertiary winding 6 is set on (namely main transformer core), (tap-changing windings component includes tap-changing windings 5 to tap-changing windings component
With switch terminal K), public winding 4, series connection winding 3, to obtain main transformer.Divide on the second iron core 10 (string becomes iron core)
Not Tao Zhuan secondary winding 9, field winding 8, to obtain series transformer.The head end of series connection winding 3, which is drawn, is used as high-voltage terminal,
It is drawn behind the end of series connection winding 3 and the head end short circuit of public winding 4 and is used as low-pressure line-outgoing, the end connection of public winding 4 is opened
The input terminal of terminal K is closed, the outlet of tap-changing windings 5 is respectively led into switch corresponding terminal, and Switch output terminal connects neutral point set
Pipe；The head end of field winding 8 is connected with the input terminal of switch terminal K, and the end of field winding 8 is connected with Switch output terminal
It connects, 8 end of secondary winding is connected with output 8 head end of winding, and head end output is connected with 6 out-phase end of output winding, is formed
Delta-connection, then as output 6 line end of winding output；To complete inside transformer electrical connection and terminal output.Main transformer
Depressor 1 and series transformer 2 (namely adjustable transformer) are respectively assembled in fuel tank 11, and are completed lead and connected with outlet, i.e.,
Complete inside transformer assembly, the same conventional transformer of external mounting.
The potential device that the embodiment of the present application also provides is that can ensure that tertiary winding output voltage is permanent under variable flux voltage variation (VFVV)
Fixed, which is made of main transformer 1 and series transformer 2, and main transformer 1 and series transformer 2 are both placed in one
In babinet.Main transformer 1 is made of series connection winding 3, public winding 4, tap-changing windings 5, output winding 6 (namely tertiary winding),
With conventional structure transformer, series transformer 2 is made of secondary winding 8 and field winding 9, and field winding 9 and tap-changing windings 5 are simultaneously
Connection, secondary winding 8 export after connecting with output winding 6.When switch position changes, primary (or secondary) input voltage is not
Become, but since the number of turns changes, one turn voltage variation changes so as to cause main flux, and the voltage of tap-changing windings 5 is also sent out
Changing, this makes the voltage for exporting winding 6 also change therewith.The field winding 9 of series transformer is in parallel with tap-changing windings 5,
The voltage value of field winding 9 is equal to the corresponding voltage change of main flux of variation, series-transformer when 5 voltage change of tap-changing windings
The voltage of the secondary winding 8 of device 2 will also change, and here, have preset the number of turns based on field winding 9 and secondary winding 8
Than and the default turn ratio and tapping voltage value is corresponding with the ratio of voltage change of low pressure electric signal after transferring the files, into
And when the main magnetic flux of main transformer 1 changes, series transformer 2 can be to the low pressure electric signal of the output output of winding 6
It compensates, the output voltage to realize output winding 6 is constant (and the deviation of required value meets standard).
As shown in figure 3, in a kind of potential device provided by the embodiments of the present application in series transformer umber of turn determination
Method, the method are applied to above-mentioned potential device, the method includes：
S101, the performance parameter according to main transformer, determine the operating parameter information in the main transformer；The work
Parameter information includes：Umber of turn, tapping voltage value and load voltage value.
In the embodiment of the present application, main transformer routinely designs, predefine the product capacity of main transformer, voltage ratio,
The performance parameters such as impedance can calculate master in this way, according to performance parameters such as the product capacity of main transformer, voltage ratio, impedances
The corresponding voltage battery parameter value of each umber of turn and main transformer of transformer.Wherein, each umber of turn of main transformer includes：
Connect umber of turn S, public winding the number of turns C, output winding (namely tertiary winding the number of turns) T.The corresponding voltage ginseng of main transformer
Numerical value includes：High tension voltage is H, and low-voltage rated voltage is X, most plus tapping voltage is Xmax, and most minus tapping voltage is Xmin, the
Three winding voltage is Y.
S102, according to the umber of turn and tapping voltage value in the main transformer, determine pressure regulation in the main transformer
The adjustable umber of turn of winding.
In specific implementation mode, according to equation H ÷ (S+C+R1)=Xmax ÷ (C+R1) ... (1),
Calculate maximal regulated the number of turns value of tap-changing windings in the main transformer；Wherein, R1 indicates pressure regulation in the main transformer
Maximal regulated the number of turns value of winding, S indicate that series connection umber of turn, C indicate that public winding the number of turns, Xmax indicate most plus tapping electricity
Pressure, Xmin indicate most minus tapping voltage；
According to equation H ÷ (S+C-R2)=Xmin ÷ (C-R2) ... (2),
Calculate minimal adjustment the number of turns value of tap-changing windings in the main transformer；Wherein, R2 indicates pressure regulation in the main transformer
Minimal adjustment the number of turns value of winding；Wherein, the adjustable umber of turn is located at maximal regulated the number of turns value R1 and the institute of tap-changing windings
Between the minimal adjustment the number of turns value R2 for stating tap-changing windings.
Maximal regulated the number of turns R1 of series transformer and the most ditty of series transformer are respectively obtained by formula (1), formula (2)
The number of turns R2 is saved, tap-changing windings the number of turns R should be located between maximum tap-changing windings the number of turns R1 and minimum tap-changing windings the number of turns R2, then pass through
Voltage selects best tap-changing windings the number of turns R than checking from maximum tap-changing windings the number of turns R1 and minimum tap-changing windings the number of turns R2.
S103, according in the adjustable umber of turn, load voltage value, the main transformer export winding the number of turns and
Preset output low voltage signal, determines the turn ratio of secondary winding and field winding in the series transformer.
In the embodiment of the present application, the number of turns of secondary winding and field winding in series transformer can be obtained by formula (3)
Compare SR, wherein formula (3) is as follows：
In formula (3), series connection umber of turn S, public winding the number of turns C, output winding (namely tertiary winding the number of turns) T, high pressure
Voltage is H, and tertiary winding voltage is Y and best tap-changing windings the number of turns R it is known that therefore, string can be determined by formula (3)
Join the turn ratio SR of transformer.
S104, according to the number of turns of secondary winding and field winding in the tapping voltage value and the series transformer
Than determining the number of turns of secondary winding and field winding in the series transformer.
Here, the secondary windings in series of series transformer is in output winding (namely tertiary winding) end, then electric current is equal,
Field winding and the tap-changing windings modules in parallel in main transformer, therefore, the voltage of field winding is equal to the tune in main transformer
The voltage for pressing winding assembly, according to the turn ratio SR of determining field winding and tap-changing windings, the voltage of field winding divided by really
The turn ratio SR of fixed field winding and tap-changing windings, can obtain the voltage of secondary winding, according to can then calculate series connection
The maximum capacity of transformer.The capacity of series transformer, voltage determines, can calculate secondary side winding and excitatory side winding
The number of turns.
It should be noted that remaining of main transformer and series transformer parameter designing are designed with conventional transformer.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer read/write memory medium.Based on this understanding, the technical solution of the application is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be expressed in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be
People's computer, server or network equipment etc.) execute each embodiment the method for the application all or part of step.
And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic disc or CD.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing, in addition, term " the
One ", " second ", " third " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
Finally it should be noted that：Embodiment described above, the only specific implementation mode of the application, to illustrate the application
Technical solution, rather than its limitations, the protection domain of the application is not limited thereto, although with reference to the foregoing embodiments to this Shen
It please be described in detail, it will be understood by those of ordinary skill in the art that：Any one skilled in the art
In the technical scope that the application discloses, it can still modify to the technical solution recorded in previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of the embodiment of the present application technical solution.The protection in the application should all be covered
Within the scope of.Therefore, the protection domain of the application should be based on the protection scope of the described claims.
Claims (10)
1. a kind of potential device, which is characterized in that including：Main transformer and series transformer；The main transformer includes：First
The iron core and transformer winding being set on first iron core, tap-changing windings component and output winding；
The tap-changing windings component is connected with the transformer winding, the HV voltage signal fluctuation for being supplied in power supply source
When, it is adjusted in the main transformer per the voltage value of circle winding by changing the umber of turn of itself；
The output winding is connected in series with the series transformer, for being adjusted to series transformer output per circle winding
Voltage value after low voltage signal；
The series transformer is connect with the tap-changing windings modules in parallel, after according to the tap-changing windings component pressure regulation
The ratio of tapping voltage value and the tapping voltage value and the voltage change of the low pressure electric signal, to the low tension of output
Signal is pressed to carry out voltage compensation, to keep the low voltage signal that the output winding exports constant.
2. potential device according to claim 1, which is characterized in that the transformer winding includes series connection winding and public
Winding；
The head end of the series connection winding with power supply source for connecting, the head end of the end and the public winding of the series connection winding
Connection；The end of the public winding is connected with the tap-changing windings component.
3. potential device according to claim 2, which is characterized in that further include neutral bushing；The tap-changing windings group
Part includes tap-changing windings and switch terminal；
The first end of the tap-changing windings is connect with the input terminal of the switch terminal, the second end of the tap-changing windings with it is described
Neutral bushing connects, and multiple selection ends of the tap-changing windings are respectively used to connect with the output end of the switch terminal；Institute
The input terminal for stating switch terminal is also connected with the end of the public winding.
4. potential device according to claim 3, which is characterized in that the series transformer includes：It is second iron core, secondary
Winding and field winding；The secondary winding and the field winding are sleeved on second iron core；
The head end of the field winding is connected with the input terminal of the switch terminal, and the end of the field winding is opened with described
The output end for closing terminal is connected；
The end of the secondary winding is connected with the head end of the output winding, and the head end of the secondary winding is used for and electricity consumption
Equipment connects.
5. potential device according to claim 4, which is characterized in that the service voltage of the power supply source supply is three-phase
Electricity, each phase electricity are correspondingly connected with transformer winding, tap-changing windings component, output winding, secondary winding and field winding；
The head end of the electric corresponding secondary winding of each phase is connected with the out-phase end of the output winding of out-phase.
6. potential device according to claim 1, which is characterized in that the main transformer and the equal position of the series transformer
In in oil tank of transformer.
7. potential device according to claim 1, which is characterized in that further include that voltage ratio is checked；
The voltage is than checking, the magnitude of a voltage fluctuation of the HV voltage signal for being supplied according to the power supply source and the master
The rated voltage ratio of transformer selects the number of turns to be regulated from the corresponding the number of turns adjustable range of the tap-changing windings component.
8. a kind of determination method of series transformer umber of turn, which is characterized in that the method is applied to claim 1~7
Any one of them potential device, the method includes：
According to the performance parameter of main transformer, the operating parameter information in the main transformer is determined；The operating parameter information
Including：Umber of turn, tapping voltage value and load voltage value；
According to the umber of turn and tapping voltage value in the main transformer, the adjustable of tap-changing windings in the main transformer is determined
Umber of turn；
According to exporting the number of turns of winding and preset defeated in the adjustable umber of turn, load voltage value, the main transformer
Go out low voltage signal, determines the turn ratio of secondary winding and field winding in the series transformer；
According to the turn ratio of secondary winding and field winding in the tapping voltage value and the series transformer, determine described in
The number of turns of secondary winding and field winding in series transformer.
9. the determination method of series transformer umber of turn according to claim 8, which is characterized in that described in the basis
Umber of turn in main transformer and tapping voltage value determine the adjustable umber of turn of tap-changing windings in the main transformer, packet
It includes：
According to equation H ÷ (S+C+R1)=Xmax ÷ (C+R1), the maximal regulated circle of tap-changing windings in the main transformer is calculated
Numerical value；Wherein, R1 indicates that maximal regulated the number of turns value of tap-changing windings in the main transformer, S indicate series connection umber of turn, C tables
Show that public winding the number of turns, Xmax indicate that most plus tapping voltage, Xmin indicate most minus tapping voltage；
According to equation H ÷ (S+C-R2)=Xmin ÷ (C-R2), the minimal adjustment circle of tap-changing windings in the main transformer is calculated
Numerical value；Wherein, R2 indicates minimal adjustment the number of turns value of tap-changing windings in the main transformer；Wherein, the adjustable umber of turn
Between maximal regulated the number of turns value R1 of tap-changing windings and minimal adjustment the number of turns value R2 of the tap-changing windings.
10. the determination method of series transformer umber of turn according to claim 8, which is characterized in that described according to institute
It states and exports the number of turns of winding and preset output low voltage in adjustable umber of turn, load voltage value, the main transformer
Signal determines the turn ratio of secondary winding and field winding in the series transformer, including：
According to equationIt determines secondary winding in the series transformer and swashs
The turn ratio of magnetic winding；Wherein, SR indicates that the turn ratio of secondary winding and field winding in the series transformer, S indicate master
The number of turns of series connection winding in transformer, C indicate that the number of turns of public winding in main transformer, T indicate to export winding in main transformer
The number of turns, Y indicate main transformer in export winding voltage.
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| CN201810425349.8A CN108346506A (en) | 2018-05-07 | 2018-05-07 | A kind of determination method of potential device and series transformer umber of turn |
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