CN204383207U - Utilize direct-furnish traction substation 27.5kV direct-furnish feeder line to the system of 2x27.5kVAT system power supply - Google Patents
Utilize direct-furnish traction substation 27.5kV direct-furnish feeder line to the system of 2x27.5kVAT system power supply Download PDFInfo
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- CN204383207U CN204383207U CN201420868449.5U CN201420868449U CN204383207U CN 204383207 U CN204383207 U CN 204383207U CN 201420868449 U CN201420868449 U CN 201420868449U CN 204383207 U CN204383207 U CN 204383207U
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Abstract
The utility model is applicable to rail traction for transformer substation system design field, provides a kind of direct-furnish traction substation 27.5kV direct-furnish feeder line that utilizes to the system of 2x27.5kV AT system power supply, comprises the autotransformer as booster system; The side of the autotransformer of described booster system connects described direct-furnish traction substation, and opposite side is in parallel with each autotransformer in described 2x27.5kV AT system.Boosted through autotransformer by direct-furnish traction substation low pressure side 27.5kV voltage, after autotransformer boosting, side is in parallel with each autotransformer of 2x27.5kV AT system, meet the power demands of 2x27.5kV AT system, can not existing direct-furnish traction substation 27.5kV direct-furnish feeder line just can be utilized to 2x27.5kVAT tractive power supply system system power supply by upgrading, both reduce construction investment, reduce again the impact on existing railway operation in the existing direct-furnish traction substation project of upgrading and rebuilding.
Description
Technical field
The utility model belongs to rail traction for transformer substation system design field, particularly relates to a kind of direct-furnish traction substation 27.5kV direct-furnish feeder line that utilizes to the system of 2x27.5kVAT system power supply.
Background technology
Three kinds of modes that electric railway traction power supply system mainly adopts direct power supply, BT powers and AT powers, adopt the single-phase voltage of traction transformer output single-phase 27.5kV when directly powering, directly be connected with rail R with contact wire T, but structure is simple large to Along Railway landline electromagnetic interference; When adopting AT power supply mode, the mouth of traction transformer is connected with positive feeder respectively at the contact wire of railway power supply net, and at railway power supply net, about 10 ~ 15km is provided with the autotransformer AT of 2:1, autotransformer is parallel between contact wire and positive feeder.
The outlet of electric railway AT power supply mode traction substation is 55kV mode or 2x27.5kV mode voltage, is respectively AT power supply mode traction substation 55kV and 2x27.5kV electric power-feeding structure schematic diagram as depicted in figs. 1 and 2.At present after existing tractive power supply system is introduced in some newly-built electrified railways, newly built railway may need to utilize existing direct-furnish traction substation to power to 2x27.5kV AT electric power system or need both wiredly to be transformed into AT power supply mode by direct-furnish what be utilized, the way of tradition routine is exactly the AT traction substation existing direct-furnish traction substation upgrading being become standard, to adapt to the tracted load demand of the AT electric power system of new line.Patent of invention (Authorization Notice No.: CN101462501B is authorized by the China that such as name is called " a kind of 27.5kV ac electrified railway AT tractive power supply system ", authorized announcement date: on March 30th, 2011) in disclosed technical scheme, be also that direct-furnish traction substation upgrading is become AT traction substation.
But existing direct-furnish traction substation upgrading is that in the process of AT traction substation, the equipment such as traction transformer and 27.5kV circuit breaker, switch is substantially all discarded, cause huge waste, can affect to existing railway operation in existing direct-furnish traction substation upgrading process simultaneously.
Utility model content
The object of the utility model embodiment is to provide a kind of direct-furnish traction substation 27.5kV direct-furnish feeder line that utilizes to the system of 2x27.5kV AT system power supply, wastes large problem to solve prior art direct-furnish traction substation upgrading process.
The utility model embodiment is achieved in that a kind of direct-furnish traction substation 27.5kV direct-furnish feeder line that utilizes is to the system of 2x27.5kV AT system power supply, and described system comprises the autotransformer as booster system;
The side of the autotransformer of described booster system connects described direct-furnish traction substation, and opposite side is in parallel with each autotransformer in described 2x27.5kV AT system.
A kind of direct-furnish traction substation 27.5kV direct-furnish feeder line that utilizes that the utility model provides is in the first preferred embodiment of the system of 2x27.5kVAT system power supply: the transformer ratio of the autotransformer of described booster system is 1:2, and the boost in voltage of described direct-furnish traction substation 27.5kV direct-furnish feeder line is become 2x27.5kV.
A kind of direct-furnish traction substation 27.5kV direct-furnish feeder line that utilizes that the utility model provides is in the second preferred embodiment of the system of 2x27.5kVAT system power supply: the autotransformer of described booster system is connected with the exit of described direct-furnish traction substation.
A kind of direct-furnish traction substation 27.5kV direct-furnish feeder line that utilizes that the utility model provides is in the 3rd preferred embodiment of the system of 2x27.5kVAT system power supply: the autotransformer of described booster system is connected with the at a point direct-furnish feeding section of described direct-furnish traction substation meeting current capacity.
A kind of direct-furnish traction substation 27.5kV direct-furnish feeder line that utilizes that the utility model embodiment provides comprises to the beneficial effect of the system of 2x27.5kVAT system power supply:
A kind of direct-furnish traction substation low pressure side 27.5kV voltage that utilizes that the utility model is supplied to is after the scheme of 2x27.5kVAT system power supply, direct-furnish traction substation low pressure side 27.5kV voltage boosts through autotransformer, after autotransformer boosting, side is in parallel with each autotransformer of 2x27.5kVAT system, meet the power demands of 2x27.5kVAT system, can not both direct-furnish just can be utilized to have traction substation to 2x27.5kVAT tractive power supply system system power supply by upgrading, both construction investment was reduced, there is the impact reduced on existing railway operation in the existing direct-furnish traction substation project of upgrading and rebuilding.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is AT power supply mode traction substation 55kV electric power-feeding structure schematic diagram;
Fig. 2 is AT power supply mode traction substation 2x27.5kV electric power-feeding structure schematic diagram;
Fig. 3 is that a kind of direct-furnish traction substation 27.5kV direct-furnish feeder line that utilizes that the utility model embodiment provides is to the structural representation of the system of 2x27.5kV AT system power supply.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
In order to technical scheme described in the utility model is described, be described below by specific embodiment.
A kind of direct-furnish traction substation 27.5kV direct-furnish feeder line that utilizes that the utility model provides is to the system of 2x27.5kV AT system power supply, comprise the autotransformer as booster system, the side of the autotransformer of this booster system connects direct-furnish traction substation, and opposite side is in parallel with each autotransformer in 2x27.5kV AT system.
Be illustrated in figure 3 a kind of direct-furnish traction substation 27.5kV direct-furnish feeder line that utilizes that the utility model embodiment provides to the structural representation of the system of 2x27.5kV AT system power supply, 27.5kV direct-furnish traction substation must be connected with complete AT section after booster system boosting, as above in Fig. 3 without AT1 and AT2, then can not form AT section, AT can not be formed and power.
Further, the transformer ratio of the autotransformer of booster system is 1:2, and the boost in voltage of direct-furnish traction substation 27.5kV is become 2x27.5kV.
The autotransformer of booster system can directly be connected with the exit of direct-furnish traction substation; Or be connected with anywhere on the direct-furnish feeding section of direct-furnish traction substation, but the current capacity of direct-furnish Traction networks between site to boosting point on traction substation direct-furnish feeder line should be considered.
Direct-furnish traction substation low pressure side 27.5kV voltage boosts through autotransformer, after autotransformer boosting, side is in parallel with each autotransformer of 2x27.5kV AT system, meet the power demands of 2x27.5kV AT system, can not existing direct-furnish traction substation just can be utilized to 2x27.5kVAT tractive power supply system system power supply by upgrading, both reduce construction investment, have the impact reduced on existing railway operation in the existing direct-furnish traction substation project of upgrading and rebuilding.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. utilize direct-furnish traction substation 27.5kV direct-furnish feeder line to a system for 2x27.5kV AT system power supply, it is characterized in that, described system comprises the autotransformer as booster system;
The side of the autotransformer of described booster system connects described direct-furnish traction substation, and opposite side is in parallel with each autotransformer in described 2x27.5kVAT system.
2. the system as claimed in claim 1, is characterized in that, the transformer ratio of the autotransformer of described booster system is 1:2, and the boost in voltage of described direct-furnish traction substation 27.5kV direct-furnish feeder line is become 2x27.5kV.
3. the system as claimed in claim 1, is characterized in that, the autotransformer of described booster system is connected with the exit of described direct-furnish traction substation.
4. the system as claimed in claim 1, is characterized in that, the autotransformer of described booster system is connected with the at a point direct-furnish feeding section of described direct-furnish traction substation meeting current capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420868449.5U CN204383207U (en) | 2014-12-31 | 2014-12-31 | Utilize direct-furnish traction substation 27.5kV direct-furnish feeder line to the system of 2x27.5kVAT system power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420868449.5U CN204383207U (en) | 2014-12-31 | 2014-12-31 | Utilize direct-furnish traction substation 27.5kV direct-furnish feeder line to the system of 2x27.5kVAT system power supply |
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| Publication Number | Publication Date |
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| CN204383207U true CN204383207U (en) | 2015-06-10 |
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| CN201420868449.5U Active CN204383207U (en) | 2014-12-31 | 2014-12-31 | Utilize direct-furnish traction substation 27.5kV direct-furnish feeder line to the system of 2x27.5kVAT system power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112397294A (en) * | 2019-08-12 | 2021-02-23 | 特变电工智能电气有限责任公司 | Iron core, winding structure and traction transformer |
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2014
- 2014-12-31 CN CN201420868449.5U patent/CN204383207U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112397294A (en) * | 2019-08-12 | 2021-02-23 | 特变电工智能电气有限责任公司 | Iron core, winding structure and traction transformer |
| CN112397294B (en) * | 2019-08-12 | 2022-10-14 | 特变电工智能电气有限责任公司 | Iron core, winding structure and traction transformer |
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