CN102420043B - Single-phase high-impedance auto-transformer - Google Patents

Single-phase high-impedance auto-transformer Download PDF

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Publication number
CN102420043B
CN102420043B CN 201110396205 CN201110396205A CN102420043B CN 102420043 B CN102420043 B CN 102420043B CN 201110396205 CN201110396205 CN 201110396205 CN 201110396205 A CN201110396205 A CN 201110396205A CN 102420043 B CN102420043 B CN 102420043B
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winding
iron core
phase iron
phase
core
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CN102420043A (en
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刘强
范洪涛
张栋
杜振斌
庞喆
刘力强
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Baoding Tianwei Baobian Electric Co Ltd
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Baoding Tianwei Group Co Ltd
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Abstract

The invention relates to a single-phase high-impedance auto-transformer and belongs to the technical field of transformers. The invention adopts the technical scheme that: the single-phase high-impedance auto-transformer comprises a single-phase iron-core core column (1), a core column exciting winding (2), a common winding (3), a series winding (4), a single-phase iron-core side column (5), a third winding (6), a side column exciting winding (7) and a voltage-regulating winding (8), wherein the single-phase iron-core core column and the single-phase iron-core side column form a single-phase iron core; the core column exciting winding, the common winding and the series winding are sequentially arranged on the single-phase iron-core core column from the inside to the outside; and the third winding (6), the side column exciting winding (7) and the voltage-regulating winding (8) are sequentially arranged on the single-phase iron-core side column from the inside to the outside. The single-phase high-impedance auto-transformer has the advantages that: by using a wire connection mode and a winding arrangement structure, the short-circuit impedance of the transformer can be improved without increase of distances between windings or internal arrangement of a reactor; and quite high short-circuit impedance between the third winding and relevant winding pairs is economically realized.

Description

A kind of single-phase high-impedance auto-transformer
Technical field
The present invention relates to a kind of single-phase high-impedance auto-transformer, belong to the transformer technology field.
Background technology
In the high-voltage power system, need a kind of high-impedance auto-transformer, namely and the short-circuit impedance between tertiary winding associated winding pair can reach more than 120%, have enough short circuit tolerances to guarantee the tertiary winding.In order to realize higher short-circuit impedance, background technology adopts two kinds of way: ⑴ to increase the winding spacing, and splits associated winding, thereby the leakage flux that increases between winding improves short-circuit impedance; ⑵ at air core reactor of tertiary winding serial connection.The first realizes the method for high impedance, no matter is increase the winding spacing or split other winding, all can reduce the technical-economic index (increase material and increase loss) of transformer, splits associated winding and also can make the more complicated of transformer insulated system change.The major defect of second method is, the air core reactor capacity can not be done very greatly, the reactor winding of series connection also can greatly improve the lightning impulse insulation level of the tertiary winding simultaneously, so the scope that adopts the method for tandem reactor can improve the short-circuit impedance value is very limited.Therefore, under rational technical-economic index condition, adopt above-mentioned two kinds of methods, can't realize the short-circuit impedance value more than 120% between tertiary winding associated winding pair.
Summary of the invention
The purpose of this invention is to provide a kind of single-phase high-impedance auto-transformer, short-circuit impedance between itself and tertiary winding associated winding pair can reach more than 120%, simultaneously, the inner winding connection and reasonable arrangement of transformer, make single-phase high-impedance auto-transformer have higher Technical Economy, solve the problems referred to above that background technology exists.
Technical scheme of the present invention is: a kind of single-phase high-impedance auto-transformer, comprise single-phase iron core column, stem excitation winding, common winding, series connection winding, single-phase iron core side pole, the tertiary winding, other post excitation winding and pressure regulation winding, single-phase iron core column and single-phase iron core side pole consist of single-phase iron core, stem excitation winding, common winding and series connection winding are arranged on single-phase iron core column from inside to outside successively, and the tertiary winding, other post excitation winding and pressure regulation winding are arranged on single-phase iron core side pole from inside to outside successively.
The tertiary winding and common winding and series connection winding be not on same core limb, and common winding and series connection winding are arranged on single-phase iron core column, and the tertiary winding is arranged on single-phase iron core side pole.
Stem excitation winding and other post excitation winding form individual electrical loop, are used for setting up on single-phase iron core side pole common winding on the tertiary winding and pressure regulation winding and single-phase iron core column and the electromagnetic connection between winding of connecting; Realize between the tertiary winding and other post excitation winding and two parts leakage flux acting in conjunction between the winding of connecting, common winding and stem excitation winding, can reach the requirement of 120% above short-circuit impedance.
Single-phase iron core, stem excitation winding, common winding and series connection winding, the tertiary winding, other post excitation winding, pressure regulation winding that single-phase iron core column and single-phase iron core side pole consist of are arranged in a fuel tank, are the single box structure.
Good effect of the present invention: adopt the mode of connection of the present invention and winding arrangement, the distance or the built-in reactor that need not to increase between winding can increase Transformer Short Circuit Impedance, very economically realize the short-circuit impedance between very large and tertiary winding associated winding pair.
Description of drawings
Accompanying drawing 1 is elementary diagram of the present invention;
In figure: single-phase iron core column 1, stem excitation winding 2, common winding 3, series connection winding 4, single-phase iron core side pole 5, the tertiary winding 6, other post excitation winding 7, pressure regulation winding 8.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described by embodiment.
a kind of single-phase high-impedance auto-transformer, comprise single-phase iron core column (1), stem excitation winding (2), common winding (3), series connection winding (4), single-phase iron core side pole (5), the tertiary winding (6), other post excitation winding (7) and pressure regulation winding (8), single-phase iron core column and single-phase iron core side pole consist of single-phase iron core, the stem excitation winding, common winding and series connection winding are arranged on single-phase iron core column from inside to outside successively, the tertiary winding (6), other post excitation winding (7) and pressure regulation winding (8) are arranged on single-phase iron core side pole from inside to outside successively.The tertiary winding (6) and common winding (3) and series connection winding (4) be not on same core limb, and common winding (3) and series connection winding (4) are arranged on single-phase iron core column (1), and the tertiary winding (6) is arranged on single-phase iron core side pole (5).
Stem excitation winding (2) and other post excitation winding (7) form individual electrical loop, are used for setting up the upward electromagnetic connection between common winding (3) and the winding of connecting (4) of the upper tertiary winding (6) of single-phase iron core side pole (5) and pressure regulation winding (8) and single-phase iron core column (1); Realize between the tertiary winding and other post excitation winding and two parts leakage flux acting in conjunction between the winding of connecting, common winding and stem excitation winding, can reach the requirement of 120% above short-circuit impedance.
The single-phase iron core that single-phase iron core column (1) and single-phase iron core side pole (5) consist of, stem excitation winding (2), common winding (3) and series connection winding (4), the tertiary winding (6), other post excitation winding (7), pressure regulation winding (8) are arranged in a fuel tank, are the single box structure.

Claims (5)

1. single-phase high-impedance auto-transformer, it is characterized in that: comprise single-phase iron core column (1), stem excitation winding (2), common winding (3), series connection winding (4), single-phase iron core side pole (5), the tertiary winding (6), other post excitation winding (7) and pressure regulation winding (8), single-phase iron core column and single-phase iron core side pole consist of single-phase iron core, the stem excitation winding, common winding and series connection winding are arranged on single-phase iron core column from inside to outside successively, the tertiary winding (6), other post excitation winding (7) and pressure regulation winding (8) are arranged on single-phase iron core side pole from inside to outside successively.
2. a kind of single-phase high-impedance auto-transformer according to claim 1, it is characterized in that the tertiary winding (6) and common winding (3) and series connection winding (4) be not on same core limb, common winding (3) and series connection winding (4) are arranged on single-phase iron core column (1), and the tertiary winding (6) is arranged on single-phase iron core side pole (5).
3. described a kind of single-phase high-impedance auto-transformer according to claim 1 and 2, it is characterized in that stem excitation winding (2) and other post excitation winding (7) form individual electrical loop, be used for setting up the upward electromagnetic connection between common winding (3) and the winding of connecting (4) of the upper tertiary winding (6) of single-phase iron core side pole (5) and pressure regulation winding (8) and single-phase iron core column (1).
4. described a kind of single-phase high-impedance auto-transformer according to claim 1 and 2, it is characterized in that single-phase iron core, stem excitation winding (2), common winding (3) and series connection winding (4), the tertiary winding (6), other post excitation winding (7), pressure regulation winding (8) that single-phase iron core column (1) and single-phase iron core side pole (5) consist of are arranged in a fuel tank, are the single box structure.
5. a kind of single-phase high-impedance auto-transformer according to claim 3, it is characterized in that single-phase iron core, stem excitation winding (2), common winding (3) and series connection winding (4), the tertiary winding (6), other post excitation winding (7), pressure regulation winding (8) that single-phase iron core column (1) and single-phase iron core side pole (5) consist of are arranged in a fuel tank, are the single box structure.
CN 201110396205 2011-12-05 2011-12-05 Single-phase high-impedance auto-transformer Active CN102420043B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201110396205 CN102420043B (en) 2011-12-05 2011-12-05 Single-phase high-impedance auto-transformer

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Application Number Priority Date Filing Date Title
CN 201110396205 CN102420043B (en) 2011-12-05 2011-12-05 Single-phase high-impedance auto-transformer

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CN102420043A CN102420043A (en) 2012-04-18
CN102420043B true CN102420043B (en) 2013-05-22

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103050257A (en) * 2012-12-24 2013-04-17 保定天威保变电气股份有限公司 Low-voltage regulating transformer
CN106504864B (en) * 2016-12-01 2019-02-12 保定天威保变电气股份有限公司 A kind of single-phase high voltage variable flux voltage variation (VFVV) auto-transformer
CN109727753A (en) * 2017-10-27 2019-05-07 特变电工沈阳变压器集团有限公司 A kind of extra-high voltage auto-transformer of pressure regulation excitation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1601667A (en) * 2004-10-26 2005-03-30 特变电工沈阳变压器集团有限公司 Method of lowering impact induction potential of large volume autotransformer
CN101256891A (en) * 2007-12-28 2008-09-03 保定天威集团有限公司 Extra-high voltage single-phase autotransformer
CN201210442Y (en) * 2008-05-09 2009-03-18 广东科旺电源设备有限公司 Novel high resistance self-coupled transformer
CN101651030A (en) * 2009-08-07 2010-02-17 中国西电电气股份有限公司 Autotransformer with low-voltage compensation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1601667A (en) * 2004-10-26 2005-03-30 特变电工沈阳变压器集团有限公司 Method of lowering impact induction potential of large volume autotransformer
CN101256891A (en) * 2007-12-28 2008-09-03 保定天威集团有限公司 Extra-high voltage single-phase autotransformer
CN201210442Y (en) * 2008-05-09 2009-03-18 广东科旺电源设备有限公司 Novel high resistance self-coupled transformer
CN101651030A (en) * 2009-08-07 2010-02-17 中国西电电气股份有限公司 Autotransformer with low-voltage compensation

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