CN102543401A - Two-differential tertiary winding voltage regulating rectifier transformer - Google Patents
Two-differential tertiary winding voltage regulating rectifier transformer Download PDFInfo
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- CN102543401A CN102543401A CN2012100667497A CN201210066749A CN102543401A CN 102543401 A CN102543401 A CN 102543401A CN 2012100667497 A CN2012100667497 A CN 2012100667497A CN 201210066749 A CN201210066749 A CN 201210066749A CN 102543401 A CN102543401 A CN 102543401A
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Abstract
A two-differential tertiary winding voltage regulating rectifier transformer comprises a main transformer, a series transformer, a flip-flop loaded voltage regulating tap switch and a no-load selector switch. The main transformer and the series transformer are combined together through a valve side low-voltage winding which adopts an 8-shaped winding structure. The rectifier transformer is characterized in that a basic winding and a series winding are arranged in the series transformer; the switching-in and the cutting off of the series winding are realized through an off-circuit tap-changer; and the rectifier transformer realizes the equal-differential voltage output of two differentials within different output voltage ranges. The two-differential tertiary winding voltage regulating rectifier transformer has the technical effects that: firstly, the rectifier transformer realizes the requirement of regulating the voltage with different differentials on voltage with equal differentials; secondly, the rectifier transformer can realize single unit large capacity output; thirdly, the structural capacity of the rectifier transformer is small; fourthly, the rectifier transformer has little total loss and is energy-saving and environment-friendly; and fifthly, the rectifier transformer is low in overall cost, compact in structure and small in occupying area.
Description
Technical field
The present invention relates to a kind of rectifier transformer, relate in particular to a kind of two differential tertiary winding voltage regulating rectifier transformers.
Background technology
Rectifier transformer with regard to purposes, have electrolytic rectifier transformer, electric furnace with rectifier transformer, carborundum with furnace transformer or the like.The characteristics of the industrial transformer of this type are that load terminal voltage change in voltage when different operating mode is very big, thereby need carry out large-scale pressure regulation.The voltage regulating mode of this type transformer has two kinds of rank difference pressure regulation and non-rank difference pressure regulation.The rank difference pressure regulation is meant that valve side (load end) output voltage difference is identical between each adjacent gear, and non-rank difference pressure regulation is meant that valve side (load end) output voltage difference is all inequality between each adjacent gear.The rank difference pressure regulation is a kind of voltage regulating mode that adopts at present extensively, but not the rank difference pressure regulation only is used in some low capacities, to differential less demanding industrial circle.
At present, differential requirement promptly is not rank difference, can not is non-rank difference some industry to output voltage.For example: the carborundum industry generally requires rectifier transformer differential big and be rank difference when first half (output voltage high), and is differential little and be rank difference (seeing table 1 for details) during latter half (output voltage is low).The requirement of this rank difference, it is optimal smelting for the carborundum resistance furnace, can this differential requirement be to be difficult to realize in design in the past.Therefore, common in the past way is to increase gear quantity, and differential employing minimum level potential difference carries out the rank difference pressure regulation.This transformer can be realized the requirement that this type pressure regulation is differential very easily.
For example: table 1 requires the output voltage excursion for certain transformer, and output voltage is higher at preceding 27 grades (promptly 1～27 grades), the differential big 9.5V of voltage; Output voltage is lower, the differential less 3.6V of voltage in back 27 grades (promptly 28～54 grades).
Table 1
In addition, large rectifier transformer adopts step-down self coupling structure, the formula that falls progressively structure or tertiary winding pressure adjusting structure usually at present.Tertiary winding voltage regulating mode is the minimum a kind of mode of structural capacity in these several kinds of structures.Therefore, the pressure regulation of this transformer adopting tertiary winding is a kind of both economical design.
Summary of the invention
The object of the present invention is to provide a kind of two differential tertiary winding voltage regulating rectifier transformers, whole cost is low, compact conformation, floor space are little.
The present invention realizes like this; It comprises main transformer, series transformer, positive and negative accent loaded tap-off tap changer, off circuit tap changer; Main transformer and series transformer are combined through the valve side low pressure winding that adopts 8 word line coil structures; It is characterized in that adopting positive and negative accent loaded tap-off tap changer that the fine tuning winding is connected neutral point; In series transformer, be provided with basic winding and series connection winding, realize the access and the excision of series connection winding through off circuit tap changer, thereby realize two kinds of rank difference pressure regulation.
Adopt positive and negative accent on load tap changer that the fine tuning winding is connected neutral point; Switch the off circuit tap changer winding of will connect and from circuit, excise, this moment along with differential big, the output voltage of the gear switch transformer valve side output voltage of on load tap changer at minimum voltage Umin to rank difference variation between intermediate voltage Umid; Switch off circuit tap changer and will connect in the winding line attachment, this moment along with differential very little, the output voltage of the gear switch transformer valve side output voltage of on load tap changer at intermediate voltage Umid to rank difference variation between maximum voltage Umax; Thus, transformer has been realized two kinds of rank difference voltage outputs that difference is differential in different output voltage ranges.
Technique effect of the present invention is: 1, realize the rank difference pressure regulation requirement of two kinds of different sizes; 2, can realize the big capacity output of separate unit; 3, the structural capacity of rectifier transformer is little; 4, the rectifier transformer overall loss is little, energy-conserving and environment-protective; 5, low, the compact conformation of whole cost, floor space are little.
Description of drawings
Fig. 1 is for implementing schematic circuit;
Fig. 2 is embodiment discipline 1 schematic circuit; Provided four kinds of different modes of connection that can adopt among the figure, these four kinds of modes of connection are respectively shown in a among the figure, b, c, the d.
Fig. 3 is embodiment discipline 2 schematic circuits;
Fig. 4 is embodiment discipline 3 schematic circuits;
Fig. 5 is embodiment discipline 5 schematic circuits.Line map when having provided off circuit tap changer among the figure respectively and switching to different gear.Line map when a becomes the excision of series connection winding for string among the figure; Line map when b inserts for string becomes the series connection winding.
Embodiment
Comprise among Fig. 1 with lower module: 1 is the main transformer network side high-tension line; 2 are main transformer compensation side line road; 3 is the main transformer voltage regulating line; 4 is the main transformer low-voltage module; 5 are the former limit of string change module; 6 are string step-down pressing mold piece.1,2,3,4 winding is sleeved on the main transformer iron core, and forms main transformer device body with iron core.5,6 winding is sleeved on to go here and there and becomes on the iron core, and forms string change device body with string change iron core.Common 4 a mesolow winding D
Az, W
Bz, W
CzWith 6 mesolow winding D
Ac, W
Bc, W
CcAdopt 8 word line coil structures forms to make a winding.
Fig. 2 discipline 7 is net side high pressure winding W
A1, W
B1, W
C1Item 8 is phase shift winding W
A2, W
B2, W
C2
Fig. 3 discipline 9 is compensation winding P
a, P
b, P
c
Fig. 4 discipline 10 is fine tuning winding T
a, T
b, T
cItem 11 is basic winding C
a, C
b, C
cItem 12 is positive and negative accent on load tap changer.
Fig. 5 discipline 13 is an off circuit tap changer; 14 are the basic winding G of string change
a, G
b, G
c15 are string change series connection winding H
a, H
b, H
c
Comprise main transformer low pressure winding D in the main transformer low-voltage module
Az, W
Bz, W
Cz
Comprise the string step-down in the string step-down pressing mold piece and press winding D
Ac, W
Bc, W
Cc
As shown in Figure 1, the present invention includes by main transformer network side high-tension line 1, main transformer compensation side line road 2, main transformer voltage regulating line 3, main transformer low-voltage module 4, the former limit of string change module 5, string step-down pressing mold piece 6 and form.Usually main transformer low pressure winding presses winding to adopt 8 word line coil structures to make an integral type winding with the string step-down.Module 3 main transformer voltage regulating lines are made up of basic winding, fine tuning winding, positive and negative accent on load tap changer.String becomes former limit module 5 and is become the series connection winding and constituted by off circuit tap changer, the basic winding of string change, string.
Switching off circuit tap changer 13 will go here and there and become the winding Ha that connects, Hb, Hc and from circuit, excise (among Fig. 5 a); Gear switch along with on load tap changer 12; This moment is because the former limit of string change (only having string to become basic winding) is little with the turn ratio of paying limit (main transformer low pressure winding), thereby transformer valve side output voltage is differential greatly.During this kind circuit, the transformer output voltage changes to the big rank difference of realization between intermediate voltage Umid at minimum voltage Umin; Switching off circuit tap changer 13 will be gone here and there and become in series connection winding Ha, Hb, the Hc line attachment (b among Fig. 5); Gear switch along with on load tap changer 12; Become greatly with pair limit (main transformer low pressure winding) turn ratio owing to string becomes former limit (go here and there and become basic winding+string change series connection winding) this moment, thereby make differential the diminishing of transformer valve side output voltage.At this moment, the transformer output voltage changes to the little rank difference of realization between maximum voltage Umax at intermediate voltage Umid.Transformer has been realized two kinds of rank difference voltage outputs that difference is differential in different output voltage ranges thus.
Can select indentation phase shift circuit a, star circuit b, interior hexagonal phase shift circuit c, four kinds of different circuit forms of corner connection circuit d in Fig. 2 main transformer network side high-tension line according to actual needs for use.
Fig. 3 host becomes compensation side line road can be based on selecting for use or cancelling in practical application.
Line map when a becomes the excision of series connection winding for string among Fig. 5; Line map when b inserts for string becomes the series connection winding.
Claims (2)
1. differential tertiary winding voltage regulating rectifier transformer; It comprises main transformer, series transformer, positive and negative accent loaded tap-off tap changer, off circuit tap changer; Main transformer and series transformer are combined through the valve side low pressure winding that adopts 8 word line coil structures; It is characterized in that adopting positive and negative accent loaded tap-off tap changer that the fine tuning winding is connected neutral point; In series transformer, be provided with basic winding and series connection winding, realize the access and the excision of series connection winding through off circuit tap changer, thereby realize two kinds of rank difference pressure regulation.
2. according to claim 1 two differential tertiary winding voltage regulating rectifier transformers; It is characterized in that adopting positive and negative accent loaded tap-off tap changer that the fine tuning winding is connected neutral point; Switch the off circuit tap changer winding of will connect and from circuit, excise, this moment along with differential big, the output voltage of the gear switch transformer valve side output voltage of on load tap changer at minimum voltage Umin to rank difference variation between intermediate voltage Umid; Switch off circuit tap changer and will connect in the winding line attachment, this moment along with differential very little, the output voltage of the gear switch transformer valve side output voltage of on load tap changer at intermediate voltage Umid to rank difference variation between maximum voltage Umax; Thereby two kinds of rank difference pressure regulation that difference is differential have been realized.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100667497A CN102543401A (en) | 2012-03-14 | 2012-03-14 | Two-differential tertiary winding voltage regulating rectifier transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100667497A CN102543401A (en) | 2012-03-14 | 2012-03-14 | Two-differential tertiary winding voltage regulating rectifier transformer |
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|---|---|
| CN102543401A true CN102543401A (en) | 2012-07-04 |
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|---|---|---|---|
| CN2012100667497A Pending CN102543401A (en) | 2012-03-14 | 2012-03-14 | Two-differential tertiary winding voltage regulating rectifier transformer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680881A (en) * | 2013-12-18 | 2014-03-26 | 中国西电电气股份有限公司 | Voltage regulating transformer and rank difference voltage regulating method |
| CN106405240A (en) * | 2016-06-29 | 2017-02-15 | 广西柳州特种变压器有限责任公司 | Method of measuring equivalent impedance of novel filter, regulator and rectifier transformer |
| CN112750591A (en) * | 2020-12-30 | 2021-05-04 | 上海电气集团(张家港)变压器有限公司 | Electric furnace transformer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55125614A (en) * | 1979-03-23 | 1980-09-27 | Toshiba Corp | Transformer |
| JPH01112715A (en) * | 1987-10-27 | 1989-05-01 | Toshiba Corp | Transformer for furnace |
| CN101740211A (en) * | 2010-02-10 | 2010-06-16 | 上官远定 | Voltage regulation and rectification transformer with balance transformer third winding |
| CN101819854A (en) * | 2010-04-22 | 2010-09-01 | 江西变压器科技股份有限公司 | Tertiary winding multi-stage coarse and fine continuous voltage adjustment rectifier transformer |
| CN202487385U (en) * | 2012-03-14 | 2012-10-10 | 江西变压器科技股份有限公司 | Two- rank-difference tertiary winding voltage regulating rectifier transformer |
-
2012
- 2012-03-14 CN CN2012100667497A patent/CN102543401A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55125614A (en) * | 1979-03-23 | 1980-09-27 | Toshiba Corp | Transformer |
| JPH01112715A (en) * | 1987-10-27 | 1989-05-01 | Toshiba Corp | Transformer for furnace |
| CN101740211A (en) * | 2010-02-10 | 2010-06-16 | 上官远定 | Voltage regulation and rectification transformer with balance transformer third winding |
| CN101819854A (en) * | 2010-04-22 | 2010-09-01 | 江西变压器科技股份有限公司 | Tertiary winding multi-stage coarse and fine continuous voltage adjustment rectifier transformer |
| CN202487385U (en) * | 2012-03-14 | 2012-10-10 | 江西变压器科技股份有限公司 | Two- rank-difference tertiary winding voltage regulating rectifier transformer |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680881A (en) * | 2013-12-18 | 2014-03-26 | 中国西电电气股份有限公司 | Voltage regulating transformer and rank difference voltage regulating method |
| CN103680881B (en) * | 2013-12-18 | 2016-06-29 | 中国西电电气股份有限公司 | A kind of adjustable transformer and rank difference pressure regulation method thereof |
| CN106405240A (en) * | 2016-06-29 | 2017-02-15 | 广西柳州特种变压器有限责任公司 | Method of measuring equivalent impedance of novel filter, regulator and rectifier transformer |
| CN106405240B (en) * | 2016-06-29 | 2019-03-08 | 广西柳州特种变压器有限责任公司 | A kind of measurement method of novel filtering voltage regulating rectifier transformer equivalent impedance |
| CN112750591A (en) * | 2020-12-30 | 2021-05-04 | 上海电气集团(张家港)变压器有限公司 | Electric furnace transformer |
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Application publication date: 20120704 |