CN102436920A - High-capacity three-body split winding type transformer - Google Patents
High-capacity three-body split winding type transformer Download PDFInfo
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- CN102436920A CN102436920A CN2011103962048A CN201110396204A CN102436920A CN 102436920 A CN102436920 A CN 102436920A CN 2011103962048 A CN2011103962048 A CN 2011103962048A CN 201110396204 A CN201110396204 A CN 201110396204A CN 102436920 A CN102436920 A CN 102436920A
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Abstract
The invention relates to a high-capacity three-body split winding type transformer and belongs to the technical field of transformers. The technical scheme is that: three transformer bodies are arranged in a transformer oil tank, and each body is a phase; each body is provided with a square iron core (1), and each square iron core is provided with two iron core columns; each iron core column is provided with a low-voltage winding and a high-voltage winding from the inner side to the outer outside; the high voltage end of the transformer is used for no-load voltage regulation, and the low voltage end is split into two windings; the low-voltage windings of the two iron core columns on each body are led out respectively, and the two three-phase low-voltage windings (2, 4) form two angular connections; and the high-voltage windings (3) of the two iron core columns on each body are led out in parallel, and the three-phase high-voltage windings form a star-shaped connection. The high-capacity three-body split winding type transformer is a three-phase transformer of which the high voltage end is used for the no-load voltage regulation, and the low voltage end is in a double-splitting structure, the occupied area of the transformer is reduced, the mechanical force of the high-capacity split winding type transformer is effectively reduced during sudden short circuit, and the safety and reliability of the operation of products are improved.
Description
Technical field
The present invention relates to a kind of big capacity three device status fission depressor, belong to the transformer technology field.
Background technology
The transformer with split winding of background technology is single-phase pair of splitted construction, and existing problems are: it is big to take up an area of size, and ancillary equipment is many, and the winding middle part exists interrupts the gap, line cake discontinuity herein, the axial unstability of short circuit have a big risk poor safety performance.
Summary of the invention
The purpose of this invention is to provide a kind of big capacity three device status fission depressor, dwindle transformer and take up an area of size, the mechanical force when effectively being reduced in sudden short circuit improves the security reliability of product operation, solves the problems referred to above that background technology exists.
Technical scheme of the present invention is: a kind of big capacity three device status fission depressor, be provided with three transformer bodies in the oil tank of transformer, and each device is as a phase; Each device body is the square shape iron core, and each square shape iron core has two stems unshakable in one's determination; Low pressure winding, high pressure winding are set respectively on each stem unshakable in one's determination from inside to outside; Transformer high-voltage is a No-load changer, and low pressure is split into two windings; Each device low pressure winding of two stems unshakable in one's determination is on one's body drawn respectively, and two low pressure windings of three-phase are formed two dihedrals respectively and connect; Each device high pressure winding parallel connection of two stems unshakable in one's determination is on one's body drawn, and the high pressure winding of three-phase is a star connection, Y connection.
Transformer is provided with three single-phase No-load changer switches, is used for the No-load changer of high pressure.
Three device bodies are arranged in parallel along the transformer short-axis direction, perhaps arrange successively along the transformer long axis direction.
The low pressure winding of two divisions of every phase is enclosed within respectively on hollow two stems unshakable in one's determination unshakable in one's determination.
The outlet of high pressure winding overhang, winding middle part do not exist interrupts the gap.
Adopt the present invention, the three-phase of transformer all places in the fuel tank, has greatly reduced the occupation of land size of transformer, has reduced the quantity of ancillary equipment.And the low pressure winding of two divisions of every phase of this structure is enclosed within respectively on hollow two stems unshakable in one's determination; The symmetry that winding relative position and ampere-turn distribute is all good than the structure that two low pressure divide vertically; Transformer distributes symmetrical, even, regular partly passing through operation short circuit hourglass flux field road, and horizontal leakage flux is starkly lower than the scheme of axial split.And the horizontal size of axial force during the size of leakage flux decision short circuit in winding, so adopt the structure of low pressure amplitude to division, the short circuit axial force is far below the structure that adopts the low pressure axial split.
High pressure winding overhang of the present invention outlet, winding middle part do not exist interrupts the gap, and there is not uneven situation in herein stressed of line cake, the risk of the axial unstability of short circuit far below low-pressure shaft to splitted construction.
Good effect of the present invention: the present invention is that a kind of high pressure is a No-load changer, and low pressure is the three-phase transformer of two splitted construction, is available as the main transformer of power plant " two-shipper one becomes ".Use three brand-new device status to split structural design, not only dwindled transformer and taken up an area of size, also reduced the mechanical force of big capacity transformer with split winding when sudden short circuit effectively, improved the security reliability of product operation.
Description of drawings
Accompanying drawing 1 is that the embodiment of the invention one transformer device structure is arranged vertical view;
Accompanying drawing 2 is that the embodiment of the invention two transformer device structures are arranged vertical view;
Accompanying drawing 3 is the single device of the present invention winding Pareto diagrams on one's body;
Accompanying drawing 4 is electrical wiring schematic diagrams of the present invention;
Among the figure: 1 iron core; 2 low pressure winding L V1; 3 high pressure winding HV; 4 low pressure winding L V2; 5 No-load changer switches.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further specified through embodiment.
A kind of big capacity three device status fission depressor is provided with three transformer bodies in the oil tank of transformer, each device is as a phase; Each device body is square shape iron core 1, and each square shape iron core has two stems unshakable in one's determination; Low pressure winding, high pressure winding are set respectively on each stem unshakable in one's determination from inside to outside; Transformer high-voltage is a No-load changer, and low pressure is split into two windings; Each device low pressure winding of two stems unshakable in one's determination is on one's body drawn respectively, and two low pressure windings 2,4 of three-phase are formed two dihedrals respectively and connect; Each device high pressure winding 3 parallel connections of two stems unshakable in one's determination is on one's body drawn, and the high pressure winding of three-phase is a star connection, Y connection.
Transformer is provided with three single-phase No-load changer switches 5, is used for the No-load changer of high pressure.
The low pressure winding of two divisions of every phase is enclosed within respectively on hollow two stems unshakable in one's determination unshakable in one's determination; The outlet of high pressure winding overhang, winding middle part do not exist interrupts the gap.
Embodiment one, with reference to accompanying drawing 1.Three device bodies are arranged in parallel along the transformer short-axis direction; Iron core is single-phase square shape structure, and each is a phase, is with two windings on every post; Winding puts in order and is followed successively by from inside to outside: iron core-low pressure winding L V1-high pressure winding HV, or iron core-low pressure winding L V2-high pressure winding HV.Each device body center-to-center of transformer is provided with a single-phase No-load changer switch, is used for the No-load changer of high pressure.
Embodiment two, with reference to accompanying drawing 2.Three device bodies are arranged along the transformer long axis direction successively.
Claims (5)
1. one kind big capacity three device status fission depressor, it is characterized in that: be provided with three transformer bodies in the oil tank of transformer, each device is as a phase; Each device body is square shape iron core (1), and each square shape iron core has two stems unshakable in one's determination; Low pressure winding, high pressure winding are set respectively on each stem unshakable in one's determination from inside to outside; Transformer high-voltage is a No-load changer, and low pressure is split into two windings; Each device low pressure winding of two stems unshakable in one's determination is on one's body drawn respectively, and two low pressure windings (2,4) of three-phase are formed two dihedrals respectively and connect; Each device high pressure winding (3) parallel connection of two stems unshakable in one's determination is on one's body drawn, and the high pressure winding of three-phase is a star connection, Y connection.
2. a kind of big capacity three device status fission depressor according to claim 1 is characterized in that transformer is provided with three single-phase No-load changer switches (5), is used for the No-load changer of high pressure.
3. according to claim 1 or 2 said a kind of big capacity three device status fission depressor, it is characterized in that the low pressure winding of two divisions of every phase is enclosed within respectively on hollow two stems unshakable in one's determination unshakable in one's determination; The outlet of high pressure winding overhang, winding middle part do not exist interrupts the gap.
4. according to claim 1 or 2 said a kind of big capacity three device status fission depressor, it is characterized in that three device bodies are arranged in parallel along the transformer short-axis direction.
5. according to claim 1 or 2 said a kind of big capacity three device status fission depressor, it is characterized in that three device bodies arrange along the transformer long axis direction successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103962048A CN102436920A (en) | 2011-12-05 | 2011-12-05 | High-capacity three-body split winding type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103962048A CN102436920A (en) | 2011-12-05 | 2011-12-05 | High-capacity three-body split winding type transformer |
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| Publication Number | Publication Date |
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| CN102436920A true CN102436920A (en) | 2012-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103962048A Pending CN102436920A (en) | 2011-12-05 | 2011-12-05 | High-capacity three-body split winding type transformer |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050254A (en) * | 2012-12-24 | 2013-04-17 | 保定天威保变电气股份有限公司 | Single-phase low-voltage double-split transformer with functions of dual high voltage and off-circuit voltage regulation |
| CN103594238A (en) * | 2013-11-27 | 2014-02-19 | 山东电力设备有限公司 | Three-phase autotransformer |
| CN105719799A (en) * | 2014-07-30 | 2016-06-29 | 特变电工衡阳变压器有限公司 | Split-winding transformer |
| CN109411218A (en) * | 2018-12-21 | 2019-03-01 | 海南金盘智能科技股份有限公司 | Transformer group |
| CN109643136A (en) * | 2016-06-22 | 2019-04-16 | U.T.T.独特变压器科技股份有限公司 | Three-phase transformer |
| CN110111985A (en) * | 2018-12-21 | 2019-08-09 | 海南金盘智能科技股份有限公司 | Transformer group |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2484625Y (en) * | 2001-06-01 | 2002-04-03 | 沈阳沈变中型变压器有限责任公司 | Voltage-regulating transformer |
| CN101236824A (en) * | 2007-12-20 | 2008-08-06 | 卧龙电气集团股份有限公司 | Body structure of single-phase traction transformer |
| CN201584271U (en) * | 2009-10-15 | 2010-09-15 | 厦门市天源兴环保科技有限公司 | Transformer |
| CN202025628U (en) * | 2010-12-30 | 2011-11-02 | 保定天威集团有限公司 | Low-voltage radially dual-split on-load regulating transformer |
-
2011
- 2011-12-05 CN CN2011103962048A patent/CN102436920A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2484625Y (en) * | 2001-06-01 | 2002-04-03 | 沈阳沈变中型变压器有限责任公司 | Voltage-regulating transformer |
| CN101236824A (en) * | 2007-12-20 | 2008-08-06 | 卧龙电气集团股份有限公司 | Body structure of single-phase traction transformer |
| CN201584271U (en) * | 2009-10-15 | 2010-09-15 | 厦门市天源兴环保科技有限公司 | Transformer |
| CN202025628U (en) * | 2010-12-30 | 2011-11-02 | 保定天威集团有限公司 | Low-voltage radially dual-split on-load regulating transformer |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050254A (en) * | 2012-12-24 | 2013-04-17 | 保定天威保变电气股份有限公司 | Single-phase low-voltage double-split transformer with functions of dual high voltage and off-circuit voltage regulation |
| CN103594238A (en) * | 2013-11-27 | 2014-02-19 | 山东电力设备有限公司 | Three-phase autotransformer |
| CN105719799A (en) * | 2014-07-30 | 2016-06-29 | 特变电工衡阳变压器有限公司 | Split-winding transformer |
| CN105719799B (en) * | 2014-07-30 | 2019-01-08 | 特变电工衡阳变压器有限公司 | A kind of transformer with split winding |
| CN109643136A (en) * | 2016-06-22 | 2019-04-16 | U.T.T.独特变压器科技股份有限公司 | Three-phase transformer |
| CN109643136B (en) * | 2016-06-22 | 2020-10-16 | U.T.T.独特变压器科技股份有限公司 | Three-phase transformer |
| CN109411218A (en) * | 2018-12-21 | 2019-03-01 | 海南金盘智能科技股份有限公司 | Transformer group |
| CN110111985A (en) * | 2018-12-21 | 2019-08-09 | 海南金盘智能科技股份有限公司 | Transformer group |
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Application publication date: 20120502 |