CN203179675U - Three-winding power distribution transformer for rail traction substation - Google Patents
Three-winding power distribution transformer for rail traction substation Download PDFInfo
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- CN203179675U CN203179675U CN 201320122051 CN201320122051U CN203179675U CN 203179675 U CN203179675 U CN 203179675U CN 201320122051 CN201320122051 CN 201320122051 CN 201320122051 U CN201320122051 U CN 201320122051U CN 203179675 U CN203179675 U CN 203179675U
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- traction substation
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Abstract
The utility model discloses a three-winding power distribution transformer for a rail traction substation. The three-winding power distribution transformer for the rail traction substation comprises a high-voltage winding, a medium-voltage winding and a low-voltage winding which are sleeved on the same iron core column, wherein the high-voltage winding is located on an outmost layer, and the low-voltage winding is located on an innermost layer. The high-voltage winding is a high-voltage input side and is connected with a 27.5kV bus of the traction substation. The medium-voltage winding and the low-voltage winding are a medium-voltage output side and the low-voltage output side, and the medium-voltage winding outputs 10kV medium-voltage output voltage and serves as a power supply of a distribution substation. The low-voltage winding outputs 0.4kV low-voltage output voltage and serves as a power supply of the traction substation. The three-winding power distribution transformer enables the power supply of the distribution substation to be directly led out from the traction substation, the engineering cost of a 10kV external power supply can be effectively reduced, transformation of a national grid can be further reduced, and valuable electric power resources can be saved.
Description
Technical field
The utility model relates to railway power and traction designs for the power transformation system, is specifically related to a kind of three winding distribution transformers for electric railway.
Background technology
Existing electric railway is provided with traction substation along the line and distribution substation provides power supply for railway.Described traction substation is along the line distribute to be specially from national grid introduce 110(220) step-down of kV electric pressure is that 27.5kV gives motor train unit and rolling stock power supply.Described distribution substation is located at the station, introduces the 10kV power supply from national grid, and step-down 0.4kV is living load power supply along the line.Because the distribution along the line of traction substation and distribution substation and quantity are more, external power source (220kV, 110kV and 10kV) introducing expense is very high, and takies the electric power resource of more preciousness.Therefore, mainly there are following two aspect shortcomings in the power supply of railway in the prior art: at first, rail traction electric substation and distribution substation external power source expense are too high; Secondly, take valuable national grid resource.
The utility model content
The technical problems to be solved in the utility model provides a kind of three winding distribution transformers for rail traction electric substation, the power supply of distribution substation can directly be drawn from traction substation, not only can effectively reduce 10kV external power source engineering cost, also can reduce the transformation of national grid, the electric power resource of saves valuable.
The utility model provides a kind of three winding distribution transformers for rail traction electric substation, comprises the high pressure winding that is sheathed on the same iron core column, middle pressure winding and low pressure winding, and wherein said high pressure winding is positioned at outermost layer, and described low pressure winding is positioned at innermost layer; Described high pressure winding is the high pressure input side, connects the 27.5kV bus of traction substation; Pressing winding, low pressure winding in described is middle pressure outlet side, low pressure outlet side, and described middle middle pressure output voltage of pressing winding output 10kV is as the power supply of distribution substation; The low pressure output voltage of described low pressure winding output 0.4kV is as the used power supply of traction substation.
The advantage that the utlity model has is:
The utility model provides a kind of three winding distribution transformers for rail traction electric substation, behind three the winding distribution transformers of high, medium and low voltage that arrange, at the station that traction substation is set, the power supply of distribution substation can directly be drawn from traction substation, through behind the three winding distribution transformers of the present utility model, not only can effectively reduce 10kV external power source engineering cost, also can reduce the transformation of national grid, the electric power resource of saves valuable.
Description of drawings
Fig. 1 is the joint group schematic diagram of the three winding distribution transformers that provide of the utility model;
Fig. 2 is the structural representation of the three winding distribution transformers that provide of the utility model.
Among the figure: 1-high pressure winding; Press winding among the 2-; 3-low pressure winding.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the utility model and being implemented, but illustrated embodiment is not as to restriction of the present utility model.
The technical problems to be solved in the utility model provides a kind of three winding distribution transformers for rail traction electric substation, comprise high pressure winding 1, middle pressure winding 2 and low pressure winding 3, press two kinds of voltages outputs of 10kV and low pressure 0.4kV in the obtaining after high pressure winding 1, middle pressure winding 2 and low pressure winding 3 are responded to step-down in turn.The 27.5kV bus that is input as traction substation of its mesohigh winding 1 after the induction step-down between high pressure winding 1, middle pressure winding 2 and the low pressure winding 3, is pressed output among the 10kV that presses winding 2 to export in obtaining, and can be used as the power supply of distribution substation; The 0.4kV low pressure of low pressure winding 3 outputs that obtain is exported, and can be used as the used power supply of traction substation.
Behind the three winding distribution transformers that employing the utility model provides, distribution substation can directly draw from traction substation and connects the 10kV power supply, need not to draw from national grid and connect the 10kV power supply, not only can reduce the railway engineering investment, and can take valuable national grid resource less.The voltage of three winding distribution transformer mesohigh windings 1 is 27.5kV, and the voltage of middle pressure winding 2 is 10kV, and low pressure winding 3 voltages are 0.4kV.Three each winding coupling groups adopt YN, yn0, d11 or YN, yn0, y0 form as shown in Figure 1.
Traction substation connects from national grid and draws 220(110) the kV high-tension electricity as shown in Figure 2, is that 27.5kV is motor train unit and rolling stock power supply through the traction transformer step-down.Three winding distribution transformer high-pressure sides also are that high pressure winding 1 is connected to traction substation 27.5kV bus, step-down is 10kV after the induction step-down between high pressure winding 1, middle pressure winding 2 and the low pressure winding 3, supplying distribution substation is living load power supply along the line, step-down is 0.4kV after the induction step-down between high pressure winding 1, middle pressure winding 2 and the low pressure winding 3, supplies traction substation from electricity consumption.When traction substation was positioned at large-scale hinge station, the 0.4kV outlet side of low pressure winding 3 also can directly be the power supply of hinge living load.
After three winding distribution transformers design of the present utility model, traction substation, the AT station of section post in one's power is being set, the power supply of distribution substation can be directly from traction substation, AT in one's power section post draw, not only can effectively reduce 10kV external power source engineering cost, also can reduce the transformation of national grid, the electric power resource of saves valuable.The utility model has been optimized the dispatch from foreign news agency scheme of distribution substation, the effective electric power resource of saves valuable when reducing investment outlay, and promotion prospect is good.According to China's speed rail 12 planning, intend nearly ten thousand kilometers in newly-built circuit, just need establish traction substation or AT one of section post in one's power for about 25 kilometers.Market application foreground is good, can save the investment of electric railway 10kV external power source, and a place can save about 2,000,000 yuan, and saves national grid 10kV electric power resource.
The above embodiment is the preferred embodiment that proves absolutely that the utility model is lifted, and protection range of the present utility model is not limited thereto.Being equal to that those skilled in the art do on the utility model basis substitutes or conversion, all within protection range of the present utility model.Protection range of the present utility model is as the criterion with claims.
Claims (1)
1. three winding distribution transformers that are used for rail traction electric substation, it is characterized in that: comprise the high pressure winding that is sheathed on the same iron core column, middle pressure winding and low pressure winding, wherein said high pressure winding is positioned at outermost layer, and described low pressure winding is positioned at innermost layer; Described high pressure winding is the high pressure input side, connects the 27.5kV bus of traction substation; Pressing winding, low pressure winding in described is middle pressure outlet side, low pressure outlet side, and described middle middle pressure output voltage of pressing winding output 10kV is as the power supply of distribution substation; The low pressure output voltage of described low pressure winding output 0.4kV is as the used power supply of traction substation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320122051 CN203179675U (en) | 2013-03-18 | 2013-03-18 | Three-winding power distribution transformer for rail traction substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320122051 CN203179675U (en) | 2013-03-18 | 2013-03-18 | Three-winding power distribution transformer for rail traction substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203179675U true CN203179675U (en) | 2013-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320122051 Expired - Lifetime CN203179675U (en) | 2013-03-18 | 2013-03-18 | Three-winding power distribution transformer for rail traction substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203179675U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105355403A (en) * | 2015-06-29 | 2016-02-24 | 谢宗洺 | Combined type transformer with functions of traction and power distribution |
| 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 |
| CN111917357A (en) * | 2019-11-29 | 2020-11-10 | 中车大同电力机车有限公司 | Traction transformer and locomotive power supply circuit |
-
2013
- 2013-03-18 CN CN 201320122051 patent/CN203179675U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105355403A (en) * | 2015-06-29 | 2016-02-24 | 谢宗洺 | Combined type transformer with functions of traction and power distribution |
| 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 |
| CN111917357A (en) * | 2019-11-29 | 2020-11-10 | 中车大同电力机车有限公司 | Traction transformer and locomotive power supply circuit |
| CN111917357B (en) * | 2019-11-29 | 2022-02-11 | 中车大同电力机车有限公司 | Traction transformer and locomotive power supply circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130904 |
|
| CX01 | Expiry of patent term |