CN105355403A - Combined type transformer with functions of traction and power distribution - Google Patents
Combined type transformer with functions of traction and power distribution Download PDFInfo
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- CN105355403A CN105355403A CN201510362711.8A CN201510362711A CN105355403A CN 105355403 A CN105355403 A CN 105355403A CN 201510362711 A CN201510362711 A CN 201510362711A CN 105355403 A CN105355403 A CN 105355403A
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Abstract
The invention discloses a combined type transformer with functions of traction and power distribution; the combined type transformer is mainly used for traction voltage-reduction power supply systems of urban mass transits, streetcars, trolley buses and factories and mines; and a traction transformer and a power distribution transformer are integrated. The combined type transformer has the functions of traction power supply and voltage reduction power distribution; a coil is arranged in the high voltage side in each phase; a traction power supply coil and a low voltage power distribution coil are arranged in the low voltage side separately; one or more groups of transformer traction power supply coils are arranged in each phase; the coils are rectified by a rectifying apparatus for providing direct currentsfor the urban mass transits, streetcars and trolley buses; and one group of transformer low voltage power distribution coils are arranged in each phase, and the coils supply power directly to alternating current low voltage loads. According to the combined type transformer with the functions of traction and power distribution, a half of the high voltage side cables, switches and protection apparatuses thereof are saved, the total volume of the equipment is reduced, the occupied area of substations is reduced, and the project investment is saved.
Description
(1) technical field
Traction hold concurrently distribution combined transformer be mainly used in urban track traffic, tramcar, trolley bus and bargh traction step-down for electrical domain, utilize a transformer to provide the energy of traction rectifier and low-voltage distribution simultaneously.
(2) background technology
In the traction stepdown substation of current city track traffic, tramcar, trolley bus and bargh, traction transformer is identical with the original edge voltage of low voltage distribution transformer, and secondary voltage is different.Two kinds of separate settings of transformer, traction transformer provides the energy of traction rectifier, and low voltage distribution transformer provides the energy of low-voltage distribution.Every platform transformer all needs independently working space, and independently arranges high-pressure side cable, switch and protective device thereof.When two kinds of transformers are independently arranged, the space taken and construction investment higher.
Traction transformer and low voltage distribution transformer are unified and are arranged by technology, are called that traction is held concurrently distribution combined transformer.Transformer utilizes same iron core and primary coil, same body arranges traction rectifier coil and low-voltage distribution coil respectively, provides the energy of traction rectifier and low-voltage distribution respectively.Every platform transformer only needs the working space of a transformer, only needs a set of high-pressure side cable, switch and protective device thereof.The space that transformer takies and construction investment smaller.
(3) summary of the invention
The double distribution combined transformer of traction mainly comprises primary coil, secondary coil and iron core, and secondary arranges traction power supply coil and low-voltage distribution coil respectively, and two kinds of coils share one group of primary coil.Transformer primary side is different with the no-load voltage ratio of difference in functionality secondary, and the no-load voltage ratio of transformer primary side and traction power supply secondary is determined according to the nominal voltage of traction rectifier load, and the no-load voltage ratio of transformer primary side and low-voltage distribution secondary is determined according to the nominal voltage of low-voltage distribution load.Primary transformer coil, traction power supply coil and low-voltage distribution coil share a transformer body and iron core.
(4) accompanying drawing explanation
1) Fig. 1 is the double distribution combined transformer principle schematic of traction, is described as follows:
(1) wiring of a wherein phase winding of the polyphase windings of this figure indication transformer, other phases are mutually identical therewith.
(2) this figure only represents that single transformer realizes the principle of 12 pulse wave rectifiers.This technology is equally applicable to the transformer that single transformer realizes 6 pulse wave rectifiers, at this moment often only has 1 traction power supply winding mutually.This technology is equally applicable to the transformer that single transformer realizes 24 pulse wave rectifiers, at this moment often has 4 traction power supply windings mutually.
(3) voltage of high-tension coil is generally and exchanges 35kV, 20kV, 10kV, 6kV.
(4) nominal voltage of traction power supply winding and the nominal voltage of tractive power supply system is corresponding arranges, direct current nominal voltage is generally 3000V, 1500V, 750V.
(5) nominal voltage of low-voltage distribution winding is generally and exchanges 0.23kV.
2) Fig. 2 is the double distribution Combined transformer structure schematic diagram of traction, is described as follows:
(1) every general three-phase three-limb core structure of platform transformer, also often can configure iron core mutually respectively.
(2) the every of transformer all arranges high-tension coil, traction power supply coil and low-voltage distribution coil mutually, wherein high-tension coil 1 group, low-voltage distribution coil 1 group, traction power supply coil 1 ~ 4 group (is 1 group when single transformer realizes 6 pulse wave rectifier, single transformer is 2 groups when realizing 12 pulse wave rectifier, is 4 groups when single transformer realizes 24 pulse wave rectifier).For the ease of expressing in figure, A phase and C phase only show high-tension coil, and B phase is display traction power supply coil and low-voltage distribution coil only.
(3) show in figure: the iron core of transformer, A phase high-tension coil, B phase traction power supply coil, B phase low-voltage distribution coil, C phase high-tension coil.
(4) in figure with dot-hatched display part for transformer core, the large rectangle part that outside transformer core and inside is provided with two perpendicular dotted lines is high-tension coil, the middle rectangle part that outside transformer core and inside is provided with two perpendicular dotted lines is traction power supply coil, and the little rectangle part that outside transformer core and inside is provided with two vertical lines is low-voltage distribution coil.
(5) embodiment
The double distribution combined transformer of traction has traction power supply and step-down distribution function concurrently, one group of coil is share in high-pressure side (35kV, 20kV, 10kV, 6kV), and low-pressure side arranges traction power supply coil (nominal voltage: direct current 3000V, 1500V, 750V etc.) and low-voltage distribution coil (nominal voltage: exchange 0.4/0.23kV) respectively.Transformer traction power supply coil is generally every establishes one or more groups mutually, after rectifying device rectification, provide direct current energy to urban track traffic, tramcar, trolley bus.Transformer rectification low-voltage distribution coil often establishes one group mutually, powers directly to AC low-tension load.
Draw the high-pressure side cable of distribution combined transformer saving half quantity of holding concurrently, switch and protective device thereof, reduce outfit of equipment and amass, reduce the floor space of electric substation, saving construction investment.
Claims (3)
1. traction hold concurrently distribution combined transformer be mainly used in urban track traffic, tramcar, trolley bus and bargh traction step-down for electrical domain, utilize a transformer to provide the energy of traction rectifier and low-voltage distribution simultaneously.
2. the double distribution combined transformer of traction mainly comprises primary coil, secondary coil and iron core, and secondary arranges traction power supply coil and low-voltage distribution coil respectively, and two kinds of coils share one group of primary coil.Transformer primary side is different with the no-load voltage ratio of difference in functionality secondary, and the no-load voltage ratio of transformer primary side and traction power supply secondary is determined according to the nominal voltage of traction rectifier load, and the no-load voltage ratio of transformer primary side and low-voltage distribution secondary is determined according to the nominal voltage of low-voltage distribution load.Primary transformer coil, traction power supply coil and low-voltage distribution coil share a transformer body and iron core.
3. the double distribution combined transformer of traction has traction power supply and step-down distribution function concurrently, one group of coil is share in high-pressure side (35kV, 20kV, 10kV, 6kV), and low-pressure side arranges traction power supply coil (nominal voltage: direct current 3000V, 1500V, 750V etc.) and low-voltage distribution coil (nominal voltage: exchange 0.4/0.23kV) respectively.Transformer traction power supply coil is generally every establishes one or more groups mutually, after rectifying device rectification, provide direct current energy to urban track traffic, tramcar, trolley bus.Transformer rectification low-voltage distribution coil often establishes one group mutually, powers directly to AC low-tension load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510362711.8A CN105355403A (en) | 2015-06-29 | 2015-06-29 | Combined type transformer with functions of traction and power distribution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510362711.8A CN105355403A (en) | 2015-06-29 | 2015-06-29 | Combined type transformer with functions of traction and power distribution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105355403A true CN105355403A (en) | 2016-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510362711.8A Pending CN105355403A (en) | 2015-06-29 | 2015-06-29 | Combined type transformer with functions of traction and power distribution |
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| Country | Link |
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| CN (1) | CN105355403A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846513A (en) * | 2016-05-30 | 2016-08-10 | 谢宗洺 | Complete-set charging device for energy-saving electric vehicle |
| CN106024330A (en) * | 2016-07-13 | 2016-10-12 | 上海沪光变压器有限公司 | Multi-coil dry-type traction rectifier transformer |
| CN110911129A (en) * | 2019-12-06 | 2020-03-24 | 中车株洲电机有限公司 | Multi-system traction transformer and rail vehicle |
| CN113808834A (en) * | 2021-09-09 | 2021-12-17 | 中铁二院工程集团有限责任公司 | Three-phase traction and electric power mixed type transformer for alternating current electrified rail transit engineering |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202839279U (en) * | 2012-07-26 | 2013-03-27 | 中铁二院工程集团有限责任公司 | Three-phase three-winding traction and power hybrid transformer |
| CN203179675U (en) * | 2013-03-18 | 2013-09-04 | 中铁第四勘察设计院集团有限公司 | Three-winding power distribution transformer for rail traction substation |
-
2015
- 2015-06-29 CN CN201510362711.8A patent/CN105355403A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202839279U (en) * | 2012-07-26 | 2013-03-27 | 中铁二院工程集团有限责任公司 | Three-phase three-winding traction and power hybrid transformer |
| CN203179675U (en) * | 2013-03-18 | 2013-09-04 | 中铁第四勘察设计院集团有限公司 | Three-winding power distribution transformer for rail traction substation |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846513A (en) * | 2016-05-30 | 2016-08-10 | 谢宗洺 | Complete-set charging device for energy-saving electric vehicle |
| CN106024330A (en) * | 2016-07-13 | 2016-10-12 | 上海沪光变压器有限公司 | Multi-coil dry-type traction rectifier transformer |
| CN110911129A (en) * | 2019-12-06 | 2020-03-24 | 中车株洲电机有限公司 | Multi-system traction transformer and rail vehicle |
| CN113808834A (en) * | 2021-09-09 | 2021-12-17 | 中铁二院工程集团有限责任公司 | Three-phase traction and electric power mixed type transformer for alternating current electrified rail transit engineering |
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Application publication date: 20160224 |