CN109130956A - A kind of positive and negative electrode systems in field section and earthed system that special rail flows back under power supply system - Google Patents
A kind of positive and negative electrode systems in field section and earthed system that special rail flows back under power supply system Download PDFInfo
- Publication number
- CN109130956A CN109130956A CN201710544700.0A CN201710544700A CN109130956A CN 109130956 A CN109130956 A CN 109130956A CN 201710544700 A CN201710544700 A CN 201710544700A CN 109130956 A CN109130956 A CN 109130956A
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- rail
- switch
- cable
- power supply
- disconnecting switch
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M3/00—Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative power
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M5/00—Arrangements along running rails or at joints thereof for current conduction or insulation, e.g. safety devices for reducing earth currents
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The positive and negative electrode systems of field section and the earthed system to be flowed back under power supply system the invention discloses a kind of special rail, it include traction substation, positive feeder cable, disconnecting switch, contact net and connecting cable including positive feeder system, negative return-flow system and walking rail and earthed system, the positive feeder system；The negative return-flow system includes traction substation, negative return cable, dedicated return current rail, disconnecting switch and connecting cable；The walking rail and earthed system use a part of rail as earthed system, are grounded, and the rail in the section of field are connected as one by equal galvanic electricity cable, and the ground connection busbar of traction substation is connected to by cable, garage interior rail is directly grounded.The present invention can be achieved under special rail reflux power supply system, the unification of main track and field section power supply system, the switching time for avoiding vehicle from generating by power supply system difference, and then influence efficiency of operation.
Description
Technical field
The present invention relates to technical field of rail traffic, the field section under especially a kind of special rail reflux power supply system is positive and negative
Electrode systems and earthed system.
Background technique
With the fast development of urban track traffic, the city rail traffic route that the country builds up operation is more and more, perhaps
Planning and establishing urban track traffic in more boom towns.Most domestic urban track traffic is all made of anode
Contact net or conductor rail power supply, cathode are by way of rail return current, and in this mode, the traction in parking lot, rolling stock section supplies
Electric system mainly includes the contact net of anode and the rail of cathode.Wherein anode is divided into difference according to the function in each region
Power supply zone, it is specific as shown in Fig. 1；Cathode considers the influence of stray electrical current, and all rails outside garage are passed through electricity
Cable is connected in entirety, and the rail in garage is connected in entirety by cable, and insulation joint and unidirectional is arranged between outside library and in library
Conducting device, it is specific as shown in Fig. 2.The mode of connection of negative return-flow system is built upon using under rail counterflow condition,
The leakage of stray electrical current in order to prevent, as far as possible increase reflux point and equal galvanic electricity cable, reduce the impedance of reflux circuit, prevent simultaneously
The leakage of stray electrical current after library interior rail ground connection.But even if taking above-mentioned measure, however it remains on the scene section of stray electrical current
The problem of leakage, the demand that there is the rail ground connection generated by protection operation and maintenance personnel are produced with because preventing stray electrical current from leaking
Contradiction between the demand of raw rail insulation.
Summary of the invention
In view of the above problems, the field section to be flowed back under power supply system the object of the present invention is to provide a kind of special rail
Positive and negative electrode systems and earthed system, can be to avoid the above problem.
The technical scheme is that the positive and negative electrode systems of field section and ground connection system under a kind of special rail reflux power supply system
System, including positive feeder system, negative return-flow system and walking rail and earthed system；
The positive feeder system includes traction substation, positive feeder cable, disconnecting switch, contact net and connecting cable；Institute
It states contact net and is divided into several subregions, each subregion in conjunction with the power supply capacity and fault incidence of feeder line according to line function
It is powered by the different positive feeder cables that same traction substation is fed out by different disconnecting switch；Lead between each contact net subregion
Cross disconnecting switch connection；The disconnecting switch forms bipolar isolation switch together with disconnecting switch described in negative return-flow system,
The bipolar isolation switch of setting disconnecting link with ground in the phase library of field；The bipolar of grounding switch is provided without outside phase library on the scene to keep apart
It closes；
The negative return-flow system includes traction substation, negative return cable, dedicated return current rail, disconnecting switch and connection electricity
Cable is separately provided the dedicated return current rail as traction current rail, it is divided according to partitioned mode corresponding with contact net
For different subregions, the negative return cable of difference that each subregion is fed out by same traction substation is powered by different disconnecting switch；Respectively
It is connected between dedicated return current rail subregion by disconnecting switch；Disconnecting switch one described in the disconnecting switch and positive feeder system
Composition bipolar isolation switch is played, the bipolar isolation switch of setting disconnecting link with ground in phase library on the scene；It is provided without outside phase library on the scene
The bipolar isolation switch of grounding switch；
The walking rail and earthed system use a part of rail as earthed system, are grounded, will be in the section of field
Rail be connected as one by equal galvanic electricity cable, and the ground connection busbar of traction substation is connected to by cable, garage interior rail is straight
It connects and is grounded on the spot.
Further, the disconnecting switch is bipolar isolation switch, wherein setting disconnecting link with ground in phase library on the scene
Bipolar isolation switch；The bipolar isolation switch of grounding switch is provided without outside phase library on the scene.
Compared with prior art, the beneficial effects of the present invention are:
(1) present invention is due to, as return current rail, solving field section stray electrical current leakage using the special rail being separately provided
Problem.
(2) present invention using the special rail being separately provided due to, as return current rail, being solved because protecting operation and maintenance personnel
Contradiction between the demand of the rail ground connection of generation and the demand of the rail insulation because preventing stray electrical current leakage from generating.
(3) under the achievable special rail reflux power supply system of the present invention, the unification of main track and field section power supply system avoids vehicle
Because power supply system difference generate switching time, and then influence efficiency of operation.
(4) contact net in library can be grounded by the present invention together with dedicated return current rail, guarantee the safety of operation and maintenance personnel.
(5) present invention can reduce the electric arc between the rail and wheel that rail insulation joint both ends are generated by potential difference.
(6) traditional device in one-way on state and side rail wear is no longer arranged in the present invention.
Detailed description of the invention
Fig. 1 is rail reflux power supply system end section positive feeder system diagram.
Fig. 2 is the enlarged drawing at Figure 1A.
Fig. 3 is the rail reflux negative return-flow system figure of power supply system end section.
Fig. 4 is the schematic diagram of the device in one-way on state in Fig. 3.
Fig. 5 is the schematic diagram of side rail wear in Fig. 4.
Fig. 6 is the field section positive feeder system diagram under special rail reflux power supply system.
Fig. 7 is the enlarged drawing at Fig. 6 B.
Fig. 8 is the negative return-flow system figure of field section under special rail reflux power supply system.
Fig. 9 is the enlarged drawing at Fig. 8 C.
Figure 10 is the field section rail wiring diagram under special rail reflux power supply system.
In figure: 1- contact net, 2- disconnecting switch, 3- walking rail, 4- device in one-way on state, 5- side rail wear,
6- return current rail, 7- earthing or grounding means.
Specific embodiment
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside"
To be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description of the present invention and simplification of the description, rather than indicate or
It implies that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as
Limitation of the present invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply
Relative importance or the quantity for implicitly indicating indicated technical characteristic.The spy of " first ", " second " etc. is defined as a result,
Sign can explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated,
The meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ",
" connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State the concrete meaning of term in the present invention.
The present invention is further illustrated with reference to the accompanying drawings and examples.
As shown, the positive and negative electrode systems of field section and earthed system under a kind of special rail reflux power supply system, including just present
Linear system system, negative return-flow system and walking rail and earthed system；
Positive feeder system includes traction substation, positive feeder cable, disconnecting switch, contact net and connecting cable；It is described to connect
It touches net and is divided into several subregions, each subregion is by same in conjunction with the power supply capacity and fault incidence of feeder line according to line function
The different positive feeder cables that one traction substation is fed out are powered by different disconnecting switch；Between each contact net subregion by every
Connection is left to connect；The disconnecting switch forms bipolar isolation switch together with disconnecting switch described in negative return-flow system, and on the scene section
The bipolar isolation switch of disconnecting link with ground is set in library；The bipolar isolation switch of grounding switch is provided without outside phase library on the scene；
Negative return-flow system includes traction substation, negative return cable, dedicated return current rail, disconnecting switch and connecting cable, list
The dedicated return current rail is solely set as traction current rail, it is divided into not according to partitioned mode corresponding with contact net
Same subregion, the negative return cable of difference that each subregion is fed out by same traction substation are powered by different disconnecting switch；It is each dedicated
It is connected between return current rail subregion by disconnecting switch；Disconnecting switch group together with disconnecting switch described in positive feeder system
At bipolar isolation switch, the bipolar isolation switch of setting disconnecting link with ground in phase library on the scene；Ground connection is provided without outside phase library on the scene
The bipolar isolation switch of disconnecting link；
Walking rail and earthed system use a part of rail as earthed system, are grounded, by the steel in the section of field
Rail is connected as one by equal galvanic electricity cable, and the ground connection busbar of traction substation is connected to by cable, and garage interior rail directly connects
Ground
Disconnecting switch is bipolar isolation switch, wherein the bipolar isolation switch of setting disconnecting link with ground in phase library on the scene；
The bipolar isolation switch of grounding switch is provided without outside phase library on the scene.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (2)
1. the positive and negative electrode systems of field section and earthed system under a kind of special rail reflux power supply system, including positive feeder system, bear back
Streaming system and walking rail and earthed system, it is characterised in that:
The positive feeder system includes traction substation, positive feeder cable, disconnecting switch, contact net and connecting cable；It is described to connect
It touches net and is divided into several subregions, each subregion in conjunction with the power supply capacity and fault incidence of feeder line according to line function
It is powered by the different positive feeder cables that the same traction substation is fed out by different disconnecting switch；Between each contact net subregion
It is connected by disconnecting switch；The disconnecting switch forms bipolar isolation switch together with the disconnecting switch in negative return-flow system,
The bipolar isolation switch of setting disconnecting link with ground in the phase library of field；The bipolar of grounding switch is provided without outside phase library on the scene to keep apart
It closes；
The negative return-flow system includes traction substation, negative return cable, dedicated return current rail, disconnecting switch and connecting cable, list
The dedicated return current rail is solely set as traction current rail, it is divided into difference according to partitioned mode corresponding with contact net
Subregion, the negative return cable of difference that each subregion is fed out by same traction substation are powered by different disconnecting switch；Each Special back
It is connected between trajectory subregion by disconnecting switch；The disconnecting switch is organized in pairs together with disconnecting switch described in positive feeder system
Pole disconnecting switch, the bipolar isolation switch of the interior setting disconnecting link with ground of phase library on the scene；Grounding switch is provided without outside phase library on the scene
Bipolar isolation switch；
The walking rail and earthed system use a part of rail as earthed system, are grounded, by the steel in the section of field
Rail is connected as one by equal galvanic electricity cable, and the ground connection busbar of traction substation is connected to by cable, and garage interior rail directly connects
Ground.
2. the positive and negative electrode systems of field section and earthed system under a kind of special rail reflux power supply system according to claim 1,
It is characterized in that, the disconnecting switch is bipolar isolation switch, the bipolar isolation switch of setting disconnecting link with ground in phase library on the scene；
The bipolar isolation switch of grounding switch is provided without outside phase library on the scene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710544700.0A CN109130956B (en) | 2017-07-06 | 2017-07-06 | Positive and negative pole system of field section and grounding system under special rail backflow power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710544700.0A CN109130956B (en) | 2017-07-06 | 2017-07-06 | Positive and negative pole system of field section and grounding system under special rail backflow power supply system |
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| Publication Number | Publication Date |
|---|---|
| CN109130956A true CN109130956A (en) | 2019-01-04 |
| CN109130956B CN109130956B (en) | 2021-09-03 |
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| CN201710544700.0A Active CN109130956B (en) | 2017-07-06 | 2017-07-06 | Positive and negative pole system of field section and grounding system under special rail backflow power supply system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112265475A (en) * | 2020-09-28 | 2021-01-26 | 天津中铁电气化设计研究院有限公司 | Method for designing field section grounding path sections of direct-current traction power supply system |
| CN117341546A (en) * | 2023-12-05 | 2024-01-05 | 中国铁路设计集团有限公司 | Redundant traction power supply system based on special return rail for urban rail transit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112265475A (en) * | 2020-09-28 | 2021-01-26 | 天津中铁电气化设计研究院有限公司 | Method for designing field section grounding path sections of direct-current traction power supply system |
| CN117341546A (en) * | 2023-12-05 | 2024-01-05 | 中国铁路设计集团有限公司 | Redundant traction power supply system based on special return rail for urban rail transit |
| CN117341546B (en) * | 2023-12-05 | 2024-02-20 | 中国铁路设计集团有限公司 | Redundant traction power supply system based on special return rail for urban rail transit |
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| CN109130956B (en) | 2021-09-03 |
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Address after: 300000 Tianjin Binhai New Area Free Trade Test Zone (Airport Economic Zone) Room 125, 36 Zhonghuan West Road Applicant after: CHINA RAILWAY ELECTRIFICATION SURVEY DESIGN & RESEARCH INSTITUTE Co.,Ltd. Applicant after: NINGBO RAIL TRANSIT GROUP Co.,Ltd. Address before: 300250 Tianjin Fuyuan Wuqing Development Zone Wuqing Road No. 18 531-83 (central office) Applicant before: TIANJIN ZHONGTIE ELECTRIFICATION DESIGN RESEARCH INSTITUTE Co.,Ltd. Applicant before: NINGBO RAIL TRANSIT GROUP Co.,Ltd. |
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