CN202084409U - Inverse Scott dry type transformer - Google Patents

Inverse Scott dry type transformer Download PDF

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Publication number
CN202084409U
CN202084409U CN2011202130035U CN201120213003U CN202084409U CN 202084409 U CN202084409 U CN 202084409U CN 2011202130035 U CN2011202130035 U CN 2011202130035U CN 201120213003 U CN201120213003 U CN 201120213003U CN 202084409 U CN202084409 U CN 202084409U
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CN
China
Prior art keywords
phase transformer
phase
transformer
winding
voltage winding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2011202130035U
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Chinese (zh)
Inventor
蔡长虹
朱滨
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YANGZHOU HUADING ELECTRIC CO Ltd
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YANGZHOU HUADING ELECTRIC CO Ltd
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Priority to CN2011202130035U priority Critical patent/CN202084409U/en
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Publication of CN202084409U publication Critical patent/CN202084409U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses an inverse Scott dry type transformer in the field of transformers. The inverse Scott dry type transformer comprises an iron core, wherein the iron core is fixed on a bracket, a first single-phase transformer and a second single-phase transformer are respectively wound on two supporting columns outside the iron core, one terminal of the high-voltage winding of the first single-phase transformer is connected with the center of the high-voltage winding of the second single-phase transformer to form a primary high-voltage coil, a low-voltage winding of the first single-phase transformer is connected in series with the low-voltage winding of the second single-phase transformer to form a secondary low-voltage coil, and the high-voltage winding of the second single-phase transformer is connected in a manner of enhanced self-coupling degree. In the utility model, as reactance of the high-voltage winding of the second single-phase transformer is reduced, stable power supply is realized, and the operation cost of a user is lowered; and the inverse Scott dry type transformer can be used for supplying power for an electric uplink/downlink traction locomotive.

Description

Contrary Scott dry-type transformer
Technical field
The utility model relates to a kind of transformer, particularly a kind of three phase transformations, one phase transformer.
Background technology
In the prior art, the power supply of large-scale traction electric locomotive is that the common power transformer by three phase transformations, one phase provides, its weak point is: because the single-phase power of welding is bigger, three-phase transformer is the single phasing mode during welding, cause electric power system severe three-phase instability in the locomotive, also increased simultaneously the operating cost that locomotive uses, promptly the capacity of the common power transformer of three-phase becomes big 1.5 times, and basic charge as per installed capacity has also increased by 1.5 times.
The utility model content
The purpose of this utility model provides a kind of contrary Scott dry-type transformer, makes that its power supply is stable, has reduced user's operating cost.
The purpose of this utility model is achieved in that contrary Scott dry-type transformer, comprise the iron core that is fixed on the support, be arranged with first single-phase transformer and second single-phase transformer respectively on two pillars of the described iron core outside, a terminal of the described first single-phase transformer high pressure winding links to each other with the center of the second single-phase transformer high pressure winding and forms the primary side high-tension coil, described first single-phase transformer low pressure winding and the described second single-phase transformer low pressure windings in series are connected to form the secondary side low-voltage coil, and the described second single-phase transformer high pressure winding adopts the mode that strengthens from the degree of coupling to connect.
During the utility model work, power input is continuous mutually with first for a terminal of the described first single-phase transformer high pressure winding, two terminals of the second single-phase transformer high pressure winding respectively with second power input mutually, the third phase power input links to each other, thereby the described first phase transformer high pressure winding forms first phase winding, the described second single-phase transformer high pressure winding forms second phase winding and third phase winding, two disjunct terminals of the described first single-phase transformer low pressure winding and the second single-phase transformer low pressure winding are power output end, compared with prior art, the beneficial effects of the utility model are: its primary side high-tension coil connects for the T type, the secondary side low-voltage coil is for being connected in series, thereby can change three phase mains into single phase poaer supply, simultaneously, on second single-phase transformer, adopt enhancing second phase winding and third phase winding connected mode in the utility model from the degree of coupling, can reduce the reactance of second phase winding and third phase winding like this, reduce the caused voltage landing of second phase winding and third phase winding, guaranteed that power supply is stable, reduced user's operating cost.The utility model can be used for up-downgoing traction electric locomotive power supply.
As further improvement of the utility model, described primary side high-tension coil and secondary side low-voltage coil are provided with tap.Making can be from the voltage of tap regulating load, and then has guaranteed the safe operation of load.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the utility model structural principle schematic diagram.
Fig. 4 in the utility model for reducing the structure chart that the second single-phase transformer high pressure winding impedance is taked.
Wherein, 1 iron core, 2 first single-phase transformers, 3 second single-phase transformers, 4 supports.
Embodiment
A kind of contrary Scott dry-type transformer as shown in Figure 1, comprise the iron core 1 that is fixed on the support 4, be arranged with first single-phase transformer 2 and second single-phase transformer 3 respectively on two pillars of iron core 1 outside, the terminal of the first single-phase transformer high pressure winding AD links to each other with the center of the second single-phase transformer high pressure winding BC and forms the primary side high-tension coil, the first single-phase transformer low pressure winding ad and the described second single-phase transformer low pressure winding bc are connected in series and form the secondary side low-voltage coil, and the second single-phase transformer high pressure winding BC adopts the mode that strengthens from the degree of coupling to connect.
During the utility model work, power input is continuous mutually with first for the terminal of the first single-phase transformer high pressure winding AD, two terminals of the second single-phase transformer high pressure winding BC respectively with second power input mutually, the third phase power input links to each other, thereby the described first phase transformer high pressure winding AD forms first phase winding, the second single-phase transformer high pressure winding BC forms the second phase winding BD and third phase winding CD, two disjunct terminals of the first single-phase transformer low pressure winding AD and the second single-phase transformer low pressure winding bc are power output end, primary side high-tension coil of the present utility model connects for the T type, the secondary side low-voltage coil is for being connected in series, thereby can change three phase mains into single phase poaer supply, simultaneously, on second single-phase transformer 3, adopt enhancing second phase winding BD and third phase winding CD connected mode in the utility model from the degree of coupling, can reduce by the reactance of the second phase winding BD and third phase winding CD like this, reduce the caused voltage landing of the second phase winding BD and third phase winding CD, guaranteed that power supply is stable, reduced user's operating cost; Primary side high-tension coil of the present utility model and secondary side low-voltage coil are provided with tap, and making can be from the voltage of tap regulating load, and then have guaranteed the safe operation of load.
The utility model is not limited to the foregoing description; on the basis of the disclosed technical scheme of the utility model; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some replacements and distortion to some technical characterictics wherein, these replacements and distortion are all in protection range of the present utility model.

Claims (2)

1. contrary Scott dry-type transformer, comprise the iron core that is fixed on the support, it is characterized in that, be arranged with first single-phase transformer and second single-phase transformer respectively on two pillars of the described iron core outside, a terminal of the described first single-phase transformer high pressure winding links to each other with the center of the second single-phase transformer high pressure winding and forms the primary side high-tension coil, described first single-phase transformer low pressure winding and the described second single-phase transformer low pressure windings in series are connected to form the secondary side low-voltage coil, and the described second single-phase transformer high pressure winding adopts the mode that strengthens from the degree of coupling to connect.
2. contrary Scott dry-type transformer according to claim 1 is characterized in that described primary side high-tension coil and secondary side low-voltage coil are provided with tap.
CN2011202130035U 2011-06-22 2011-06-22 Inverse Scott dry type transformer Expired - Lifetime CN202084409U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011202130035U CN202084409U (en) 2011-06-22 2011-06-22 Inverse Scott dry type transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011202130035U CN202084409U (en) 2011-06-22 2011-06-22 Inverse Scott dry type transformer

Publications (1)

Publication Number Publication Date
CN202084409U true CN202084409U (en) 2011-12-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011202130035U Expired - Lifetime CN202084409U (en) 2011-06-22 2011-06-22 Inverse Scott dry type transformer

Country Status (1)

Country Link
CN (1) CN202084409U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105827119A (en) * 2016-06-15 2016-08-03 国网青海省电力公司 Automatic voltage stabilizing transformer
CN109065338A (en) * 2018-09-12 2018-12-21 成都尚华电气有限公司 A kind of homo-phase traction transformer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105827119A (en) * 2016-06-15 2016-08-03 国网青海省电力公司 Automatic voltage stabilizing transformer
CN109065338A (en) * 2018-09-12 2018-12-21 成都尚华电气有限公司 A kind of homo-phase traction transformer
CN109065338B (en) * 2018-09-12 2023-10-03 成都尚华电气有限公司 In-phase traction transformer

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Granted publication date: 20111221