CN202134379U - Double-voltage convertible transformer - Google Patents

Double-voltage convertible transformer Download PDF

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Publication number
CN202134379U
CN202134379U CN201120242193U CN201120242193U CN202134379U CN 202134379 U CN202134379 U CN 202134379U CN 201120242193 U CN201120242193 U CN 201120242193U CN 201120242193 U CN201120242193 U CN 201120242193U CN 202134379 U CN202134379 U CN 202134379U
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CN
China
Prior art keywords
winding
voltage
transformer
double
conversion
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Expired - Fee Related
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CN201120242193U
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Chinese (zh)
Inventor
刘立忠
黄云龙
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SHENDA ELECTRIC GROUP CO Ltd
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SHENDA ELECTRIC GROUP CO Ltd
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Priority to CN201120242193U priority Critical patent/CN202134379U/en
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Publication of CN202134379U publication Critical patent/CN202134379U/en
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Expired - Fee Related legal-status Critical Current

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Abstract

A double-voltage convertible transformer comprises an iron core, a low voltage coil and a high voltage coil. The low voltage coil is divided into a first winding and a second winding, the first winding and the second winding have the same number of turns, the first winding and the second winding are in a parallel connection state or a series connection state selectively, and the first winding and the second winding share an adjustable tap switch. The first winding and the second winding are in the parallel connection state or the series connection state selectively through a change-over switch. By means of the structure, conversion between double voltage can be obtained when the transformer works, and the transformer is strong in adapting capacity and especially suitable for conversion between voltage of 35 kV and 20 kV.

Description

A kind of pair of convertible transformer of voltage
Technical field
The utility model and a kind of transformer technology field relate in particular to a kind of pair of convertible transformer of voltage.
Background technology
Along with the continuous development of society, electric load constantly increases, and the limitation of 10kV medium voltage distribution network power supply begins to show, power supply capacity is not enough, voltage levvl is on the low side and net to decrease shortcoming such as bigger also more and more outstanding.China's low-voltage network if can boost to 20kV with 10kV; Can solve other many problems that the 10kV electric pressure exists, and bring such as line loss and can reduce 3/4ths, can practice thrift transformer station's quantity and a series of advantages such as soil and minimizing space, circuit corridor.Therefore, the 20kV medium voltage distribution network has just become the effective measures of dealing with problems, and the 20kV power distribution network replaces the 10kV power distribution network also imperative.In the line, the voltage ubiquity of 35KV if the step-down in the circuit directly can directly be reduced to the voltage of 35KV or 20KV from voltages such as 110KV or 66KV, can avoid the user to make the secondary input, realizes the two voltage transitions transformers of 35kV and 20kV.Therefore in the 10kV system in the process of 20kV system transition, it is very necessary can realize the conversion of two kinds of voltages the time to invent a kind of low pressure.
The utility model content
The utility model is the shortcoming to above-mentioned existence, provides a kind of low pressure can realize the transformer of the conversion of two kinds of voltages.
The technical scheme that technical problem adopted that the utility model solves is:
A kind of pair of convertible transformer of voltage; Comprise iron core, low-voltage coil, high-tension coil; It is characterized in that low-voltage coil is divided into first winding and second winding; First winding has the identical number of turn with second winding, and first winding optionally is in parallelly connected or series connection with second winding, first winding and the shared adjustable shunting switch of said second winding.For guaranteeing that first winding and second winding can be parallelly connected state, first winding just needs the identical number of turn with second winding, and shared adjustable shunting switch comes regulation voltage level simultaneously.Such as the conversion between 35kV and 20kV; When being chosen in series connection to first winding and second winding; The voltage of low pressure is output as 35kV, and when being chosen in parallelly connected state to first winding with second winding, the voltage of low pressure is output as 17.5kV; Be adjusted to 20kV through first winding and the shared adjustable shunting switch of second winding then, two voltage transitions are accomplished.
In the practical implementation, first winding and second winding are provided with change over switch, and first winding optionally is in parallelly connected with second winding or series connection realizes through change over switch.
Realize that through change over switch transformer works in the conversion between the voltage, and reach needed voltage through adjustable shunting switch, two voltage transformers can be operated in the conversion of two kinds of voltages, and the transformer adaptive capacity is strong.
The beneficial effect of the utility model is: through the structure of the utility model, can realize that transformer is operated in the conversion of two kinds of voltages, the transformer adaptive capacity is strong, especially is adapted to the conversion between voltage 35kV and the 20kV.
Description of drawings
Below in conjunction with accompanying drawing and embodiment utility model is further specified.
Fig. 1 is the sketch map of the utility model embodiment series connection principle.
Fig. 2 is the sketch map of the utility model embodiment parallel connection state principle.
Embodiment
In Fig. 1, Fig. 2; The convertible transformer of two voltages for the three-phase oil immersion formula comprises iron core, low-voltage coil, high-tension coil, and low-voltage coil is divided into first winding 1 and second winding 2; First winding 1 has the identical number of turn with second winding 2; First winding 1 optionally is in parallelly connected or series connection with second winding 2 through change over switch, sees Fig. 1 and Fig. 2 respectively, first winding 1 and said second winding, 2 shared adjustable shunting switchs 3.For guaranteeing that first winding 1 and second winding 2 can be parallelly connected state, first winding 1 just needs the identical number of turn with second winding 2, and shared adjustable shunting switch 3 comes regulation voltage level simultaneously; In Fig. 1, when being chosen in series connection to first winding 1 and second winding 2, the initiating terminal of threephase oil immersed transformer is A, B, C; A1, B1, C1 are connected with X1, Y1, Z1 respectively; End is X2, Y2, Z2, and first winding 1 is connected with second winding 2, and the voltage of low pressure is output as 35Kv.When change over switch switches, in Fig. 2, when being chosen in parallelly connected state to first winding 1 with second winding 2; The initiating terminal of threephase oil immersed transformer is A, B, C, and X2, Y2, Z2 are connected with X1, Y1, Z1 respectively, and end is similarly X2, Y2, Z2; First winding 1 is parallelly connected with second winding 2; The voltage of low pressure is output as 17.5kV, is adjusted to 20kV through first winding 1 and second winding, 2 shared adjustable shunting switchs 3 then, and two voltage transitions are accomplished.Change over switch be slide block type or the disconnecting link formula, very general in the prior art, do not introduce at this.Realize that through change over switch transformer works in the conversion between the voltage; Though two kinds of voltages are not the twice relations; Reach needed voltage through adjustable shunting switch 3, two voltage transformers can be operated in the conversion of two kinds of voltages, and the transformer adaptive capacity is strong.

Claims (2)

1. two convertible transformer of voltage; Comprise iron core, low-voltage coil, high-tension coil; It is characterized in that low-voltage coil is divided into first winding and second winding; First winding has the identical number of turn with second winding, and first winding optionally is in parallelly connected or series connection with second winding, the shared adjustable shunting switch of first winding and second winding.
2. the convertible transformer of a kind of pair of voltage according to claim 1 is characterized in that first winding and second winding are provided with change over switch.
CN201120242193U 2011-07-11 2011-07-11 Double-voltage convertible transformer Expired - Fee Related CN202134379U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201120242193U CN202134379U (en) 2011-07-11 2011-07-11 Double-voltage convertible transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201120242193U CN202134379U (en) 2011-07-11 2011-07-11 Double-voltage convertible transformer

Publications (1)

Publication Number Publication Date
CN202134379U true CN202134379U (en) 2012-02-01

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CN201120242193U Expired - Fee Related CN202134379U (en) 2011-07-11 2011-07-11 Double-voltage convertible transformer

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CN (1) CN202134379U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103035384A (en) * 2012-12-24 2013-04-10 安徽神虹变压器有限公司 6kV/10kV changeover dual-purpose distribution transformer
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
CN103762855A (en) * 2013-11-18 2014-04-30 上海气焊机厂有限公司 Dual-voltage conversion circuit of generator-welder integrated machine and conversion method thereof
CN103871720A (en) * 2012-12-13 2014-06-18 北京普源精电科技有限公司 Measuring device allowing input voltage adjustment
CN108123607A (en) * 2018-01-03 2018-06-05 常州同惠电子股份有限公司 Alternating current automatic switching control equipment based on voltage method
CN111816428A (en) * 2020-06-19 2020-10-23 山东电力设备有限公司 220KV three-winding medium-voltage dual-voltage transformer lead structure

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103871720A (en) * 2012-12-13 2014-06-18 北京普源精电科技有限公司 Measuring device allowing input voltage adjustment
CN103035384A (en) * 2012-12-24 2013-04-10 安徽神虹变压器有限公司 6kV/10kV changeover dual-purpose distribution transformer
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
CN103762855A (en) * 2013-11-18 2014-04-30 上海气焊机厂有限公司 Dual-voltage conversion circuit of generator-welder integrated machine and conversion method thereof
CN103762855B (en) * 2013-11-18 2017-02-01 上海气焊机厂有限公司 Dual-voltage conversion circuit of generator-welder integrated machine and conversion method thereof
CN108123607A (en) * 2018-01-03 2018-06-05 常州同惠电子股份有限公司 Alternating current automatic switching control equipment based on voltage method
CN111816428A (en) * 2020-06-19 2020-10-23 山东电力设备有限公司 220KV three-winding medium-voltage dual-voltage transformer lead structure

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120201

Termination date: 20170711

CF01 Termination of patent right due to non-payment of annual fee