CN103794343A - End terminal on-load voltage regulation single-phase 220 kV high-impedance transformer - Google Patents
End terminal on-load voltage regulation single-phase 220 kV high-impedance transformer Download PDFInfo
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- CN103794343A CN103794343A CN201410082311.7A CN201410082311A CN103794343A CN 103794343 A CN103794343 A CN 103794343A CN 201410082311 A CN201410082311 A CN 201410082311A CN 103794343 A CN103794343 A CN 103794343A
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Abstract
The invention relates to a transformer, in particular to an end terminal on-load voltage regulation single-phase 220 kV high-impedance transformer. The transformer comprises a main iron core column and side iron core columns, the main iron core column is sleeved with a high voltage winding, a medium voltage winding and a low voltage winding, one side iron core column is sleeved with an exciting winding and a voltage regulation winding, the end terminal of the high voltage winding is connected with the voltage regulation winding through a lead, the low voltage winding is connected with the exciting winding in parallel through a lead, and an on-load voltage regulation tap switch is arranged on one side of the side iron core column sleeved with the voltage regulation winding. The end terminal on-load voltage regulation single-phase 220 kV high-impedance transformer is reasonable in structure, enables the leads to be led conveniently, and is high in reliability, excellent in performance index, low and controllable in oscillatory potential of the suspension end of the voltage regulation winding and suitable for design of 145 kV-330 kV end terminal on-load voltage regulation single-phase high-impedance transformers, and the transformer can be safely and reliably operated in a power grid system with a high voltage neutral point indirectly grounded.
Description
(1) technical field
The present invention relates to a kind of transformer, particularly the single-phase 220kV high-impedance transformer of a kind of line end on-load voltage regulation.
(2) background technology
Along with developing rapidly of national economy, electric power transmission network is increasingly sophisticated, the fail safe during in order to ensure power system operation, reliability, and power consumer is also more and more higher to the requirement of power transformer product.Sometimes be subject to the restriction in energy centre or load center geographical position, usually transformer station is arranged in to the poor remote mountain areas of transportation condition, at this moment transportation clearance and the hauled weight of power consumer to power transformer product can propose strict requirement, according to conventional method for designing, make originally can be designed to the power transformer product of Integral three-phase, be subject to the restriction of transportation condition, must be designed to single-phase transformer, more very it, transformer mainly need be organized after parts are transported to separately erecting bed and be assembled again, this is by man power and materials a large amount of cost, and the quality of product is difficult for guaranteeing.Sometimes in order to improve the anti-short circuit capability of product, to the impedance voltage numerical value proposed requirement of power transformer product,, far beyond the category of GB/T6451-2008 defined, call it by the fine-sounding name of: high-impedance electric power transformer.The ability of sometimes bearing atmospheric over-voltage and switching overvoltage in order to improve the pressure regulation winding of the power transformer using in non-direct ground system and shunting switch, power transformer user requires to adopt high pressure line end voltage regulating mode; Sometimes power consumer, in order to improve power transmission efficiency, usually requires the no-load loss of power transformer and load loss numeric ratio GB/T 6451-2008 setting much lower, etc.
For these reasons, transformer equipment manufactory, if do not take more advanced design concept, not only the manufacturing cost of product can significantly rise, and sometimes can not meet the demand of power consumer completely, final enterprise will be eliminated in this cruel competition of market economy.
(3) summary of the invention
The present invention is in order to make up the defect of prior art, provide a kind of rational in infrastructure, lead-in wire is convenient, reliability is high, performance index are superior, pressure regulation winding suspension end oscillation potential is low and controlled, the single-phase 220kV high-impedance transformer of line end on-load voltage regulation that can meet consumers' demand.
The present invention is achieved through the following technical solutions:
The single-phase 220kV high-impedance transformer of a kind of line end on-load voltage regulation, comprise two iron core side poles of a principal post unshakable in one's determination and apportion principal post unshakable in one's determination both sides, it is characterized in that, on described principal post unshakable in one's determination, cover has high pressure winding, middle pressure winding and low pressure winding successively from inside to outside, on one of them iron core side pole, cover has field winding and pressure regulation winding successively from inside to outside, the line end of high pressure winding is connected with pressure regulation winding by lead-in wire, low pressure winding is connected in parallel by lead-in wire and field winding, and cover has a side of the iron core side pole of pressure regulation winding to be furnished with on-load tap changer.
The cross-sectional area of described iron core side pole is 50%～60% of principal post unshakable in one's determination.
The invention has the beneficial effects as follows:
The present invention is rational in infrastructure, lead-in wire is convenient, reliability is high, performance index are superior, pressure regulation winding suspension end oscillation potential is low and controlled, can meet user's demand, be applicable to the design of 145kV～330kV line end on-load voltage regulation single-phase high-impedance transformer, such transformer can operate in the network system of high pressure neutral point indirect earthing safely, reliably; It has successfully solved traditional structure in existing difficult problems in aspect such as insulation, lead-in wires, for exploitation high impedance, low loss transformer specially disclose a kind of brand-new design concept.
(4) accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Fig. 1 is the layout plan of each winding of the present invention and switch;
Fig. 2 is elementary diagram of the present invention.
In figure, 1 principal post unshakable in one's determination, 2 iron core side poles, 3 high pressure windings, press winding, 5 low pressure windings, 6 field windings, 7 pressure regulation windings, 8 on-load tap changers in 4.
(5) embodiment
Accompanying drawing is specific embodiments of the invention.As Fig. 1, shown in Fig. 2, this kind of single-phase 220kV high-impedance transformer of line end on-load voltage regulation, the core construction of the type transformer is selected single-phase three pillar type structure, its core limb is divided into a principal post 1 unshakable in one's determination and two iron core side poles 2, wherein the cross-sectional area of iron core side pole 2 is 50%～56% of principal post 1 cross-sectional area unshakable in one's determination, concrete numerical value can be according to no-load loss, no-load current, the parameters such as noise size are determined, two iron core side pole 2 apportions principal post unshakable in one's determination 1 both sides, on principal post 1 unshakable in one's determination, cover has high pressure winding 3 successively from inside to outside, middle pressure winding 4 and low pressure winding 5, on one of them iron core side pole 2, cover has field winding 6 and pressure regulation winding 7 successively from inside to outside, the line end of high pressure winding 3 is connected with pressure regulation winding 7 according to elementary diagram as shown in Figure 2 by lead-in wire, low pressure winding 5 is connected in parallel according to elementary diagram and field winding 6 as shown in Figure 2 by lead-in wire, cover has a side of the iron core side pole 2 of pressure regulation winding 7 to be furnished with on-load tap changer 8, on-load tap changer 8 connects according to elementary diagram as shown in Figure 2.
Except technical characterictic described in specification, all the other technical characterictics are those skilled in the art's known technology.
Claims (2)
1. the single-phase 220kV high-impedance transformer of line end on-load voltage regulation, comprise two iron core side poles (2) of a principal post unshakable in one's determination (1) and apportion principal post (1) unshakable in one's determination both sides, it is characterized in that, on described principal post unshakable in one's determination (1), cover has high pressure winding (3) successively from inside to outside, middle pressure winding (4) and low pressure winding (5), on one of them iron core side pole (2), cover has field winding (6) and pressure regulation winding (7) successively from inside to outside, the line end of high pressure winding (3) is connected with pressure regulation winding (7) by lead-in wire, low pressure winding (5) is connected in parallel by lead-in wire and field winding (6), cover has a side of the iron core side pole (2) of pressure regulation winding (7) to be furnished with on-load tap changer (8).
2. the single-phase 220kV high-impedance transformer of line end on-load voltage regulation according to claim 1, is characterized in that, the cross-sectional area of described iron core side pole (2) is 50%～56% of principal post unshakable in one's determination (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410082311.7A CN103794343B (en) | 2014-03-07 | 2014-03-07 | A kind of line end on-load voltage regulation single-phase 220kV high-impedance transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410082311.7A CN103794343B (en) | 2014-03-07 | 2014-03-07 | A kind of line end on-load voltage regulation single-phase 220kV high-impedance transformer |
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| Publication Number | Publication Date |
|---|---|
| CN103794343A true CN103794343A (en) | 2014-05-14 |
| CN103794343B CN103794343B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410082311.7A Active CN103794343B (en) | 2014-03-07 | 2014-03-07 | A kind of line end on-load voltage regulation single-phase 220kV high-impedance transformer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111668003A (en) * | 2019-03-06 | 2020-09-15 | 特变电工沈阳变压器集团有限公司 | High-impedance coarse and fine adjustment transformer |
| CN112951560A (en) * | 2021-03-22 | 2021-06-11 | 保定天威保变电气股份有限公司 | Single-phase generator transformer with variable low-voltage rated voltage and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5790923A (en) * | 1980-11-27 | 1982-06-05 | Toshiba Corp | Transformer |
| JPH11186070A (en) * | 1997-12-25 | 1999-07-09 | Hitachi Ltd | Single-phase autotransformer |
| CN2914278Y (en) * | 2006-06-27 | 2007-06-20 | 西安西电变压器有限责任公司 | Single-phase auto-powerstat |
| CN203746639U (en) * | 2014-03-07 | 2014-07-30 | 山东达驰电气有限公司 | Line-terminal on-load voltage regulating single-phase 220kV high-impedance transformer |
-
2014
- 2014-03-07 CN CN201410082311.7A patent/CN103794343B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5790923A (en) * | 1980-11-27 | 1982-06-05 | Toshiba Corp | Transformer |
| JPH11186070A (en) * | 1997-12-25 | 1999-07-09 | Hitachi Ltd | Single-phase autotransformer |
| CN2914278Y (en) * | 2006-06-27 | 2007-06-20 | 西安西电变压器有限责任公司 | Single-phase auto-powerstat |
| CN203746639U (en) * | 2014-03-07 | 2014-07-30 | 山东达驰电气有限公司 | Line-terminal on-load voltage regulating single-phase 220kV high-impedance transformer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111668003A (en) * | 2019-03-06 | 2020-09-15 | 特变电工沈阳变压器集团有限公司 | High-impedance coarse and fine adjustment transformer |
| CN111668003B (en) * | 2019-03-06 | 2023-08-25 | 特变电工沈阳变压器集团有限公司 | High-impedance coarse-fine regulating transformer |
| CN112951560A (en) * | 2021-03-22 | 2021-06-11 | 保定天威保变电气股份有限公司 | Single-phase generator transformer with variable low-voltage rated voltage and method |
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| Publication number | Publication date |
|---|---|
| CN103794343B (en) | 2016-08-17 |
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