CN2888617Y - Power distribution transformer which can be connected to two kinds of grids - Google Patents
Power distribution transformer which can be connected to two kinds of grids Download PDFInfo
- Publication number
- CN2888617Y CN2888617Y CN 200620069353 CN200620069353U CN2888617Y CN 2888617 Y CN2888617 Y CN 2888617Y CN 200620069353 CN200620069353 CN 200620069353 CN 200620069353 U CN200620069353 U CN 200620069353U CN 2888617 Y CN2888617 Y CN 2888617Y
- Authority
- CN
- China
- Prior art keywords
- transformer
- kinds
- winding
- distribution transformer
- connects
- 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 - Fee Related
Links
Landscapes
- Housings And Mounting Of Transformers (AREA)
Abstract
The utility model discloses a distribution transformer that may connect two kinds of power grid, primary winding of each phase of the distribution transformer is divided into two separate sections, an off-circuit tap changer is used for conversion of serial, parallel connection as well as switching of tap voltage, when running in 20kv power grid, two sections of winding are used in series, when running in 10kv power grid, two sections of winding are used in parallel, in both conditions, electric energy transferred by transformer remains unchanged.
Description
Technical field
The utility model relates to a kind of distribution transformer that connects two kinds of electrical networks.
Background technology
Distribution transformer commonly used all is to be connected among a kind of electrical network of voltage, in order to transmit electric energy and voltage of transformation.Because the loss of portion of energy is arranged in the transmission course of electric energy in electrical network, and line voltage is low more, energy loss is big more, so improve line voltage, helps improving the efficient of electric energy transmitting.During particularly all kinds of at home economic development zones are built, distribution transformer must be purchased and change again because of line voltage improves, the investment of equipment certainly will be increased like this, the economic financial resources that waste country is limited through regular meeting.
Summary of the invention
The purpose of this utility model is: a kind of distribution transformer that connects two kinds of electrical networks is provided, the every mutually former limit of this distribution transformer winding is divided into independent two sections, carry out the switching that series and parallel is changed and carried out tapping voltage by off circuit tap changer, when running on the 20kV electrical network, two sections windings in series are used, when running on the 10kV electrical network, and two sections then in parallel uses of winding, and under two kinds of situations, the electric energy that transformer transmitted is constant.
The technical solution of the utility model is: a kind of distribution transformer that connects two kinds of electrical networks, the every mutually former limit winding of described transformer is divided into the segmentation of two equivalent, and connects with off circuit tap changer.
One of technical scheme that the utility model is detailed is: a kind of distribution transformer that connects two kinds of electrical networks, and the every mutually former limit winding of described transformer is divided into the segmentation of two equivalent, and connects with off circuit tap changer; When described shunting switch placed position in parallel, transformer was used for the 10kV electrical network.
Two of the technical scheme that the utility model is detailed is: a kind of distribution transformer that connects two kinds of electrical networks, and the every mutually former limit winding of described transformer is divided into the segmentation of two equivalent, and connects with off circuit tap changer; When described shunting switch placed series position, transformer was used for the 20kV electrical network.
Shunting switch in the technique scheme is installed on the case lid of transformer.
The utility model has the advantages that:
1. the utility model utilizes string, the connection principle of electric elements, the former limit winding of the every phase of transformer is divided into the segmentation of two equivalent, the secondary winding is then identical with common transformer, remain unchanged, transformer tank covers a special off circuit tap changer is housed, when transformer is used for the 10kV electrical network, shunting switch is placed position in parallel, when transformer is used for the 20kV electrical network, then shunting switch is placed series position, under the two states, transformer all can carry out the switching of tapping voltage by shunting switch.
2. transformer of the present utility model is respectively when two kinds of operations of power networks, because the physical dimension and the area of Transformer Winding, not at all change, in addition, the circle electromotive force of winding also remains unchanged, so the characteristic of this transformer remains unchanged, the no-load loss of transformer, load loss, short-circuit impedance all are same values.
Description of drawings
The utility model will be further described below in conjunction with drawings and Examples:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model.
Wherein: 1 transformer; 2 first half windings; 3 Lower Half windings; 4 off circuit tap changers; 5 case lids.
Embodiment
Embodiment: as shown in Figure 1 and Figure 2, a kind of distribution transformer that connects two kinds of electrical networks, the every mutually former limit winding of described transformer (1) is divided into the first half winding (2) and the Lower Half winding (3) of two equivalent, and connect with the off circuit tap changer (4) on the case lid that is installed in transformer (1) (5), when shunting switch (4) places position in parallel, transformer (1) is used for the 10kV electrical network, states shunting switch (4) when placing series position, and transformer (1) is used for the 20kV electrical network.
The utility model utilizes string, the connection principle of electric elements, the former limit winding of transformer 1 every phase is divided into the segmentation of two equivalent, the secondary winding is then identical with common transformer, remain unchanged, a special off circuit tap changer 4 is housed on the transformer case lid 5, when transformer 1 is used for the 10kV electrical network, shunting switch 4 is placed position in parallel, when transformer 1 is used for the 20kV electrical network, then shunting switch 4 is placed series position, under the two states, transformer 1 all can carry out the switching of tapping voltage by shunting switch 4; Transformer 1 of the present utility model is respectively when two kinds of operations of power networks, because the physical dimension and the area of Transformer Winding, not at all change, in addition, the circle electromotive force of winding also remains unchanged, so the characteristic of this transformer 1 remains unchanged, the no-load loss of transformer 1, load loss, short-circuit impedance all are same values.
Claims (4)
1. distribution transformer that can connect two kinds of electrical networks, it is characterized in that: the every mutually former limit winding of described transformer (1) is divided into the first half winding (2) and the Lower Half winding (3) of two equivalent, and connects with off circuit tap changer (4).
2. the distribution transformer that connects two kinds of electrical networks according to claim 1 is characterized in that: when described shunting switch (4) placed position in parallel, transformer (1) was used for the 10kV electrical network.
3. the distribution transformer that connects two kinds of electrical networks according to claim 1 is characterized in that: described shunting switch (4) is when placing series position, and transformer (1) is used for the 20kV electrical network.
4. according to claim 1 or the 2 or 3 described distribution transformers that connect two kinds of electrical networks, it is characterized in that: described shunting switch (4) is installed on the case lid (5) of transformer (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620069353 CN2888617Y (en) | 2006-02-14 | 2006-02-14 | Power distribution transformer which can be connected to two kinds of grids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620069353 CN2888617Y (en) | 2006-02-14 | 2006-02-14 | Power distribution transformer which can be connected to two kinds of grids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2888617Y true CN2888617Y (en) | 2007-04-11 |
Family
ID=38047188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620069353 Expired - Fee Related CN2888617Y (en) | 2006-02-14 | 2006-02-14 | Power distribution transformer which can be connected to two kinds of grids |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2888617Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021641A (en) * | 2012-12-20 | 2013-04-03 | 江苏铭安电气有限公司 | Distribution transformer for conversion between 10KV and 20KV |
| CN103258629A (en) * | 2013-05-30 | 2013-08-21 | 卧龙电气集团股份有限公司 | Large-capacity oil immersed transformer with six-column iron core |
-
2006
- 2006-02-14 CN CN 200620069353 patent/CN2888617Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021641A (en) * | 2012-12-20 | 2013-04-03 | 江苏铭安电气有限公司 | Distribution transformer for conversion between 10KV and 20KV |
| CN103258629A (en) * | 2013-05-30 | 2013-08-21 | 卧龙电气集团股份有限公司 | Large-capacity oil immersed transformer with six-column iron core |
| CN103258629B (en) * | 2013-05-30 | 2015-12-30 | 卧龙电气集团股份有限公司 | With the Large Copacity oil-filled transformer of six column iron cores |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104702114B (en) | High-frequency-chain bidirectional direct-current transformer with switched capacitor access and control method thereof | |
| CN103311924B (en) | Single-phase combined co-phased power supply and transformation structure | |
| CN110137936B (en) | Building low-voltage direct current power supply system | |
| CN104283436A (en) | Combined type MMC type direct current transformer based on transformer coupling | |
| WO2021004479A1 (en) | Variable-frequency power transmission system | |
| CN112653149A (en) | High-power electric energy router suitable for low-voltage distribution network | |
| CN202134379U (en) | Double-voltage convertible transformer | |
| CN103427415A (en) | Three-phase combined same-phase power supply and transformation structure | |
| CN201036146Y (en) | Single-phase traction transformer of secondary side center tap | |
| CN207320834U (en) | A kind of circuit topological structure of alternating current-direct current mixing distribution system | |
| CN202067649U (en) | On-load capacity-regulating power transformer | |
| CN2888617Y (en) | Power distribution transformer which can be connected to two kinds of grids | |
| CN203352187U (en) | Single-phase combined co-phased power supply and transformation device | |
| CN208433914U (en) | A kind of more level isolation type bidirectional DC/DC translation circuits | |
| CN209642329U (en) | A kind of 400V power supply-distribution system controllably powered automatically | |
| CN218414239U (en) | Flexible spare transformer | |
| CN201084636Y (en) | A capacitor bank fling-cut special vacuum switch | |
| CN210985973U (en) | Drilling oil power-change control system directly driven by medium-voltage frequency conversion | |
| CN107769211A (en) | A kind of twin voltage grade alternating current-direct current mixes distribution system | |
| CN201339208Y (en) | Electric power dredger | |
| CN201498346U (en) | 10 and 20 KV dual voltage distribution transformer | |
| CN203491073U (en) | On-load capacity regulating transformer | |
| CN203166765U (en) | Isolation type DC/DC converter based on modularization multi-level transverter | |
| CN205723125U (en) | A kind of novel impedance energy-economic transformer | |
| CN202183303U (en) | Transformer 10kv-20kv voltage conversion lead structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070411 Termination date: 20140214 |