CN106158308A - A kind of self coupling power transformer on-load voltage regulation structure cancelling the tertiary winding - Google Patents
A kind of self coupling power transformer on-load voltage regulation structure cancelling the tertiary winding Download PDFInfo
- Publication number
- CN106158308A CN106158308A CN201610765982.2A CN201610765982A CN106158308A CN 106158308 A CN106158308 A CN 106158308A CN 201610765982 A CN201610765982 A CN 201610765982A CN 106158308 A CN106158308 A CN 106158308A
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- China
- Prior art keywords
- winding
- coil
- voltage regulation
- tap changer
- power transformer
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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
- 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
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
-
- 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
- H01F29/08—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators
- H01F29/12—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators having movable coil, winding, or part thereof; having movable shield
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
The present invention relates to a kind of self coupling power transformer on-load voltage regulation structure cancelling the tertiary winding, principal post device body includes connect winding, public winding, stable voltage coil；Adjustable transformer device body includes voltage regulation coil and magnetizing coil, voltage regulation coil is series between series connection winding and public winding, stable voltage coil is independent of connecting winding and outside public winding but being set on same iron core with winding of connecting, public winding, stable voltage coil is in parallel with magnetizing coil and stable voltage coil is provided with tap changer, and stable voltage coil first and last end is drawn respectively and is connected with other biphase transformer group triangularity.Stable voltage coil in the present invention can either be played by tap exit to the magnetizing coil of tap changer outside the effect of regulation voltage, additionally it is possible to also serves as the tertiary winding simultaneously and uses.The first and last end of stable voltage coil drawn by the solution of the present invention and couples with other biphase transformer group triangularity, serving the effect eliminating triple-frequency harmonics impact.
Description
Technical field
The present invention relates to self coupling power transformer field, be specifically related to a kind of self coupling power transformer cancelling the tertiary winding
On-load voltage regulation structure.
Background technology
Current supertension self coupling power transformer is required to be designed with the independent tertiary winding, with play elimination three times humorous
The effect of ripple electric current impact.
When supertension self coupling power transformer uses as connecting transformer and connects two supergrids, its series connection
Winding, public winding are ultrahigh-voltage voltage grade.If this supertension self coupling power transformer requires to use pressure adjusting structure,
Can use three kinds of voltage regulating modes at present:
(1). neutral point pressure regulation, the program is variable flux voltage variation (VFVV), can bring tertiary winding voltage pulsation and overexcitation unshakable in one's determination,
Most users are it is not recommended that use；
(2). public winding line end pressure regulation, the program is constant flux voltage regulation, but public winding side is owing to being supertension insulation water
The flat manufacture level having exceeded current on-load voltage regulating switch, then can improve on-load tap changers of transformers manufacture difficulty and cost；
(3). double body constant flux voltage regulation structure, this structure is constant flux voltage regulation structure, it is to avoid tertiary winding voltage pulsation
With overexcitation unshakable in one's determination, and the dielectric level of supertension self coupling tapping switch for electric power transformer can be effectively reduced, reduce
On-load tap changers of transformers manufacture difficulty and cost, its schematic diagram is as shown in Figure 1.
In order to eliminate the impact of triple-frequency harmonics, above-mentioned (1), (2), (3) scheme is both needed to design independent triangular form wiring side
The tertiary winding of formula, adds cost, increases product size and structure is loaded down with trivial details.
Summary of the invention
For the problems referred to above, the present invention proposes a kind of voltage-regulation principle based on novel double body structure, effectively drops
The voltage-to-ground of low tap-changing windings, the tap changer making it possible to utilize dielectric level to reduce completes the adjustment of voltage, and with
Time be the tertiary winding of transformator by stable voltage coil design, make the stable voltage coil of three-phase carry out triangle connection, hold concurrently
A kind of self coupling power transformer on-load voltage regulation structure cancelling the tertiary winding of the function of tool circulation triple harmonic current.
For solving the problems referred to above, the technical scheme that the present invention takes is: a kind of self coupling power transformer cancelling the tertiary winding
Device on-load voltage regulation structure, including principal post device body and adjustable transformer device body, described principal post device body include connect winding, public around
Group；Described adjustable transformer device body includes being enclosed within the voltage regulation coil on same iron core and magnetizing coil, and voltage regulation coil is series at
Between series connection winding and public winding, outside described principal post device body is also independently from series connection winding and public winding but with string
The stable voltage coil that connection winding, public winding are set on same iron core, stable voltage coil is in parallel with magnetizing coil and steady
Determining voltage regulation coil and be provided with tap changer, stable voltage coil first and last end is drawn respectively and forms triangle with other biphase transformator
Shape connects.
Stable voltage coil is no longer necessary to inside transformer ground connection, because three-phase stable voltage coil is outside transformator
It is connected into triangle junction, and by one point earth after outside is connected into triangle junction.
Outside stable voltage coil is independent of series connection winding and public winding, but all it is set with winding of connecting, public winding
On same iron core, the principal post magnetic flux that its Main Function is set up with public winding electromotive force by series connection winding, as required
Electromotive force is introduced the voltage regulation coil in modulator body by pressure regulation ratio, and voltage regulation coil is series between series connection winding and public winding,
Stable voltage coil first and last end is drawn respectively and couples with other biphase transformer group triangularity, in transformator the three of generation
Subharmonic current provides loop, eliminates the triple harmonic current impact on equipment.Stable voltage coil is except flowing through pressure regulation tap
Electric current, flows through the three characteristics of the middle term the most simultaneously and loads triple harmonic current that is unequal and that produce.
Present invention voltage-regulation principle based on double body structure, effectively reduces the voltage-to-ground of tap-changing windings, and being allowed to can
Complete the adjustment of voltage with the tap changer utilizing dielectric level to reduce, and be transformator by stable voltage coil design simultaneously
The tertiary winding, make the stable voltage coil of three-phase carry out triangle connection, have concurrently circulation triple harmonic current function, cancel
The independent tertiary winding in traditional design, simplifies structure, reduces cost.
The polarity of tap changer selects end to be connected with magnetizing coil one end, the tap exit of tap changer and magnetizing coil
The other end connects.Series connection winding is constant with the voltage of public winding, and in stable voltage coil, the electromotive force of sensing is also constant
Value, stable voltage coil is connected with tap changer, and when the gear change of tap changer, the number of turn being parallel to ballast coil becomes
Change, thus the electromotive force respective change of magnetizing coil, the electromotive force of voltage regulation coil carries out respective change according to turn ratio simultaneously, owing to adjusting
Line ball circle is series between series connection winding and public winding, and the potential change of voltage regulation coil changes the electricity of Working winding the most at last
Pressure, finally plays the effect of regulation voltage.
The polarity of tap changer selects end to be connected with magnetizing coil head end, the tap exit of tap changer and magnetizing coil
End connects.
Described tap changer includes polarity selector and tap selector.
Described tap selector is provided with switching switch.
The polarity selector of tap changer is connected with magnetizing coil head end, the switching switch of tap changer and magnetizing coil end
End connects.
Three-phase stable voltage coil is connected into triangle junction outside transformator, and after outside is connected into triangle junction
By one point earth.
Stable voltage coil in the present invention can either play tune by the tap exit of tap changer to magnetizing coil
Outside the effect of economize on electricity pressure, additionally it is possible to also serve as the tertiary winding simultaneously and use.By the head of stable voltage coil in the solution of the present invention
End is drawn and couples with other biphase transformer group triangularity, serves the effect eliminating triple-frequency harmonics impact.
The invention has the beneficial effects as follows:
(1). how high autotransformer more than supertension grade no matter secondary side electric pressure is all can use permanent magnetic flux to adjust
Pressure, all will not cause tertiary winding voltage pulsation and overexcitation unshakable in one's determination；
(2). the dielectric level of tap-changing windings can be reduced, reduce shunting switch manufacture difficulty and price.
(3). scheme similar as before is compared simpler, reduces the size of transformator, reduces being manufactured into of transformator
This.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of existing double body constant flux voltage regulation structure；
Fig. 2 is the schematic diagram of the present invention.
Detailed description of the invention
A kind of self coupling power transformer on-load voltage regulation structure cancelling the tertiary winding, as in figure 2 it is shown, include principal post device body and
Adjustable transformer device body, the magnetic flux of two device bodies is relatively independent.Described principal post device body includes connecting winding, public winding, steady
Determine voltage regulation coil；Described stable voltage coil independent of series connection winding with outside public winding but with winding of connecting, public around
Group is set on same iron core, and described adjustable transformer device body includes being enclosed within the voltage regulation coil on same iron core and excitatory line
Circle, voltage regulation coil is series between series connection winding and public winding, and stable voltage coil is in parallel with magnetizing coil makes two device bodies
Electromotive force association and stable voltage coil be provided with tap changer, stable voltage coil first and last end is drawn and biphase with other respectively
Transformer group triangularity connects.Three-phase stable voltage coil is connected into triangle junction outside transformator, and connects in outside
By one point earth after triangularity connection.Described tap changer includes polarity selector and tap selector and tap selector
It is provided with switching switch.The polarity selector of tap changer is connected with magnetizing coil head end, and the switching switch of tap changer is with sharp
Magnetic coil end connects.
Outside stable voltage coil is independent of series connection winding and public winding, but all it is set with winding of connecting, public winding
On same iron core, the principal post magnetic flux that its Main Function is set up with public winding electromotive force by series connection winding, as required
Electromotive force is introduced the voltage regulation coil in modulator body by pressure regulation ratio, and voltage regulation coil is series between series connection winding and public winding,
When the potential change of stable voltage coil, this potential change introduces adjustable transformer device body by magnetizing coil in parallel therewith,
Change the electromotive force of voltage regulation coil, and then realize the function of regulation voltage.Stable voltage coil first and last end is drawn also and other respectively
Biphase transformer group triangularity couples, and provides loop for the triple harmonic current produced in transformator, eliminates triple-frequency harmonics electricity
The stream impact on equipment.Stable voltage coil except flowing through pressure regulation tapping current, flow through the most simultaneously three characteristics of the middle term load unequal and
The triple harmonic current produced.
Claims (7)
1. cancel a self coupling power transformer on-load voltage regulation structure for the tertiary winding, including principal post device body and adjustable transformer device
Body, described principal post device body includes connect winding, public winding；Described adjustable transformer device body includes being enclosed within same iron core
Voltage regulation coil and magnetizing coil, voltage regulation coil be series at series connection winding and public winding between, it is characterised in that: described master
Post device body is also independently from series connection winding and outside public winding but is set on same iron core with winding of connecting, public winding
Stable voltage coil, stable voltage coil is in parallel with magnetizing coil and stable voltage coil is provided with tap changer, stable adjusts
Line ball circle first and last end is drawn respectively and connects with other biphase transformer group triangularity.
The self coupling power transformer on-load voltage regulation structure of the cancellation tertiary winding the most according to claim 1, it is characterised in that:
The polarity of tap changer selects end to be connected with magnetizing coil one end, and the tap exit of tap changer is with the magnetizing coil other end even
Connect.
The self coupling power transformer on-load voltage regulation structure of the cancellation tertiary winding the most according to claim 2, it is characterised in that:
The polarity of tap changer selects end to be connected with magnetizing coil head end, and the tap exit of tap changer is with magnetizing coil end even
Connect.
The self coupling power transformer on-load voltage regulation structure of the cancellation tertiary winding the most according to claim 1, it is characterised in that:
Described tap changer includes polarity selector and tap selector.
The self coupling power transformer on-load voltage regulation structure of the cancellation tertiary winding the most according to claim 4, it is characterised in that:
Described tap selector is provided with switching switch.
The self coupling power transformer on-load voltage regulation structure of the cancellation tertiary winding the most according to claim 5, it is characterised in that:
The polarity selector of tap changer is connected with magnetizing coil head end, and the switching switch of tap changer is connected with magnetizing coil end.
The self coupling power transformer on-load voltage regulation structure of the cancellation tertiary winding the most according to claim 1, it is characterised in that:
Three-phase stable voltage coil is connected into triangle junction outside transformator, and by a little connecing after outside is connected into triangle junction
Ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610765982.2A CN106158308A (en) | 2016-08-30 | 2016-08-30 | A kind of self coupling power transformer on-load voltage regulation structure cancelling the tertiary winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610765982.2A CN106158308A (en) | 2016-08-30 | 2016-08-30 | A kind of self coupling power transformer on-load voltage regulation structure cancelling the tertiary winding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106158308A true CN106158308A (en) | 2016-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610765982.2A Pending CN106158308A (en) | 2016-08-30 | 2016-08-30 | A kind of self coupling power transformer on-load voltage regulation structure cancelling the tertiary winding |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108346506A (en) * | 2018-05-07 | 2018-07-31 | 江苏华鹏变压器有限公司 | A kind of determination method of potential device and series transformer umber of turn |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58212112A (en) * | 1982-06-03 | 1983-12-09 | Toshiba Corp | Split type auto-transformer |
| CN103050261A (en) * | 2012-12-24 | 2013-04-17 | 保定天威保变电气股份有限公司 | High voltage regulating autotransformer |
| CN204289045U (en) * | 2014-12-03 | 2015-04-22 | 中国西电电气股份有限公司 | A kind of multi-functional winding construction for transformer |
| CN205943712U (en) * | 2016-08-30 | 2017-02-08 | 山东电力设备有限公司 | Self coupling power transformer on -load voltage regulation structure of cancellation tertiary winding |
-
2016
- 2016-08-30 CN CN201610765982.2A patent/CN106158308A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58212112A (en) * | 1982-06-03 | 1983-12-09 | Toshiba Corp | Split type auto-transformer |
| CN103050261A (en) * | 2012-12-24 | 2013-04-17 | 保定天威保变电气股份有限公司 | High voltage regulating autotransformer |
| CN204289045U (en) * | 2014-12-03 | 2015-04-22 | 中国西电电气股份有限公司 | A kind of multi-functional winding construction for transformer |
| CN205943712U (en) * | 2016-08-30 | 2017-02-08 | 山东电力设备有限公司 | Self coupling power transformer on -load voltage regulation structure of cancellation tertiary winding |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108346506A (en) * | 2018-05-07 | 2018-07-31 | 江苏华鹏变压器有限公司 | A kind of determination method of potential device and series transformer umber of turn |
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Application publication date: 20161123 |
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