CN103832293B - Traction current bascule and its method for railway electrification section - Google Patents
Traction current bascule and its method for railway electrification section Download PDFInfo
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- CN103832293B CN103832293B CN201410073654.7A CN201410073654A CN103832293B CN 103832293 B CN103832293 B CN 103832293B CN 201410073654 A CN201410073654 A CN 201410073654A CN 103832293 B CN103832293 B CN 103832293B
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Abstract
The invention discloses a kind of traction current bascule and its method for railway electrification section.The traction current bascule includes uneven test module and impedance adjustment module；Uneven test module is connected to the two ends of choke transformer traction circle, and impedance adjustment module is connected between rail and choke transformer traction circle；Traction current in uneven test module collection rail, is analyzed sampled data, shows degree of unbalancedness and the impedance adjustment suggestion of traction current；Impedance adjustment module makes degree of unbalancedness reach minimum according to impedance adjustment suggestion adjustment impedance.Utilize the present invention, it is possible to achieve the balanced adjustment of railway electrification section rail traction current, on the premise of not influenceing rail traction current unobstructed, reduce the degree of unbalancedness of rail traction current, improve the functional reliability of track circuit and mobile unit.
Description
Technical field
The present invention relates to a kind of traction current bascule for railway electrification section, also relate to one kind and be based on
The traction current balance method of the device, belongs to railway signal technology field.
Background technology
Railway is national communication transport lifeblood, and railway signal system is commander, the system for controlling train operation, is to ensure iron
Road transportation safety and the key equipment of effective operation.In railway signal system, the track electricity of section occupancy/free time is checked
Road is the key foundation equipment of whole signal system, the safe and reliable work of direct relation signal system.
Railway electrification section is provided with traction substation, and traction current delivers to contact net by traction substation, and train passes through
Pantograph is connected with contact net and obtains traction power source.Train generates the harmonic current of wide spectrum when using traction power source.Should
Electric current is connected to rail with train aerial drainage wheel, and returns traction substation by rail.Harmonic current on this rail is traction
Backflow.With the fast development of railway transportation cause, the increase of the weight of train and train speed, the traction current of electric locomotive with
Increase.The traction current of two rail can be interfered because of imbalance to track circuit and mobile unit, especially to track electricity
The conductive interference on road is the most serious.If not taking certain safeguard procedures, the normal work of track circuit can be not only influenceed,
And can trigger mobile unit failure cause brake.
To solve traction current to the interference problem of track circuit, following measure is typically taken：One is that track circuit will have
Certain anti-unbalance interference performance.Require that its anti-unbalance electric current is in such as technical standard of 25Hz phase-sensitive track circuits
60A.Two be using etc. impedance rail connecting line, i.e., in that longer one steel rail connecting line, around part copper core is entered, make two
The resistance of rail connecting line is equal.Three be adjustment leak resistance, such as cleans railway roadbed, the insulation spacer changed under rail, effort
Keep the balance of the aerial drainage over the ground of rail return current.But in switch section, because of the reasons such as switch structure, the imbalance of rail impedance
It can not adjust.Can so there are some drawbacks：One is increase maintenance workload.In bend location, because of outside rail abrasion
More serious than inner side rail, the conductive bits slag worn away is more, causes resistance over the ground necessarily to reduce, causes traction current uneven
Weighing apparatus.Therefore the often work such as cleaning railway ballast is needed, workload is increased.Two be that imbalance has blindness.Switch section by
In reasons such as switch structures, rail impedance can not possibly be equal.Even if being equal by rail connecting line impedance design, result is still
Traction current can not possibly be made equal.Interference caused by traction current is still present, or even can also improve rail return current not
Balanced degree.
The content of the invention
In view of the shortcomings of the prior art, primary technical problem to be solved by this invention is to provide a kind of for railway electricity
The traction current bascule of gasification section.
Another technical problem to be solved by this invention is to provide a kind of traction current balance side based on said apparatus
Method.
For achieving the above object, the present invention uses following technical schemes：
A kind of traction current bascule for railway electrification section, including uneven test module and impedance adjustment
Module；The uneven test module is connected to the two ends of choke transformer traction circle, and the impedance adjustment module is connected to steel
Between rail and choke transformer traction circle；
Traction current in the uneven test module collection rail, is analyzed sampled data, display is drawn back
Degree of unbalancedness and the impedance adjustment suggestion of stream；The impedance adjustment module makes according to impedance adjustment suggestion adjustment impedance
Degree of unbalancedness reaches minimum.
Wherein more preferably, the uneven test module includes current acquisition unit, amperometry unit and data display
Unit；
The two ends of current acquisition unit connection choke transformer traction circle, the amperometry unit respectively with it is described
Current acquisition electricity is first to be connected with the data display unit；
The current acquisition unit gathers the traction current in rail and sampling data transmitting is delivered into the amperometry list
Member, the amperometry unit is analyzed the sampled data, draws degree of unbalancedness curve and impedance adjustment suggestion；Institute
State data display unit and show impedance adjustment suggestion and degree of unbalancedness curve.
Wherein more preferably, the impedance adjustment module is the rail connecting line that impedance is adjusted with multi gear.
Wherein more preferably, the rail connecting line is four, is connected to signal receiver and/or signal sends and set
The two ends of standby choke transformer traction circle.
A kind of traction current balance method for railway electrification section, comprises the following steps：
Gather the traction current in rail；
Sampled data is analyzed, show that degree of unbalancedness and the impedance adjustment to rail connecting line are advised；
Advise the impedance of adjustment rail connecting line according to the impedance adjustment, the degree of unbalancedness is reached minimum.
Wherein more preferably, the degree of unbalancedness is the current differential that choke transformer draws circle two ends.
Wherein more preferably, spectrum analysis is carried out to the sampled data, entered for the component in mobile unit frequency band range
Row extraction and analysis, so as to judge interference volume in frequency band.
Wherein more preferably, when adjusting the impedance of rail connecting line, to apparatus for transmitting signal and/or signal receiver two
The impedance of the rail connecting line at end is adjusted respectively.
Traction current bascule and its method provided by the present invention for railway electrification section, is not influenceing steel
On the premise of rail traction current is unobstructed, it is possible to achieve the balanced adjustment of railway electrification section rail traction current, reduce rail
The degree of unbalancedness of traction current, improves the functional reliability of track circuit and mobile unit.
Brief description of the drawings
Fig. 1 is the operation principle schematic diagram of traction current bascule provided by the present invention；
Fig. 2 is applied to the connection diagram of railway electrification section for the present invention.
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Referring to Fig. 1, the traction current bascule that the present invention is provided includes uneven test module and impedance adjustment module.
Wherein uneven test module includes current acquisition unit, amperometry unit and data display unit.Amperometry unit point
It is not connected with current acquisition electricity member and data display unit.The two ends of current acquisition unit connection choke transformer traction circle,
Gather the traction current in rail and sampling data transmitting is delivered into amperometry unit.Amperometry unit is to current acquisition unit
Sample rate current analyzed, draw degree of unbalancedness curve and impedance adjustment suggestion.Data display unit shows impedance adjustment
It is recommended that and degree of unbalancedness curve.Impedance adjusting unit is advised according to the impedance adjustment of data display unit and imbalance is write music
Line carries out impedance adjustment.After the impedance adjustment of rail, the curent change in rail can be influenceed, and then realize traction current in rail
Balance.This is described in detail below.
Referring to Fig. 2, traction current includes I, I1, I2, I3, I4, IA, IB in figure.ID1 and ID2 is traction current in rail
On when flowing back to traction substation, the electric current sewed to the earth.After rail traction current I is by choke transformer traction circle, online
Be divided into rail current I1, I2 on two one steel rails on road, because rail impedance RG1-2 is different, rail earth impedance RD1-2 is different and
Rail connection line impedence RL1-2 is different so that entering signal sends electric current IA, IB of equipment end choke transformer traction circle both sides
It is unequal.Traction current IA, IB produce induced signal on choke transformer signal roundel, but phase is opposite, that is, is drawn
Backflow IA, IB cancel out each other in the sensing that choke transformer signal roundel is produced.As IA ≠ IB, IA and IB are in chokes transformation
The sensing of device signal roundel can not be completely counterbalanced by, and this remanent induction electric current after having offset is exactly interference letter for track circuit
Number.As can be seen here, make IA equal with IB as far as possible with regard to interference of the traction current to signalling arrangement can be reduced.IA, IB are more uneven, right
The interference of signalling arrangement is bigger.
In one embodiment of the invention, the uneven test module of traction current bascule includes current acquisition list
Member, amperometry unit and data display unit.Wherein current acquisition unit uses split core type current transformer, is connected on grips respectively
The both sides of convertor transformer traction circle.The current acquisition unit gathers electric current IA, the IB at choke transformer traction circle two ends simultaneously, and
Electric current is sampled, filtered, A/D sends data to amperometry unit after changing.
Preceding to have addressed, the impedance of rail connecting line directly affects the balance of rail traction current.Amperometry unit according to
The sampled data test degree of unbalancedness of current acquisition unit, and provide the impedance adjustment suggestion of rail connecting line.The impedance adjustment
It is recommended that can be made according to custom circuit principle.Illustrated below so that an one steel rail connecting line carries out impedance adjustment as an example.Example
If IA ＞ IB, then the impedance of rail connecting line where suggestion reduces IB, so that IB increases, IA reduce, reduces IA and IB poor
Value, improves the balance of traction current.According to degree of unbalancedness and the actual conditions of rail connecting line, the ordinary skill people of this area
Member can also propose other impedance adjustment suggestions, just be not explained in detail herein.
Amperometry unit receives the sampled data of IA, IB electric current of current acquisition unit, first according to sampled data point
Analyse and test the degree of unbalancedness of traction current.Unbalanced traction current is weighed with degree of unbalancedness, i.e., choke transformer is drawn
Enclose the current differential IA-IB at two ends.Amperometry unit contrasts electric current IA and IB first, draws IA and IB difference, then right
The current information of IA and IB difference is sampled and spectrum analysis.Needed during spectrum analysis in mobile unit frequency band range
Component carry out extraction and analysis, so as to judge interference volume in frequency band.Because uneven traction current is to the effectively dry of mobile unit
Disturb simply 495Hz~905Hz, 1689Hz~1711Hz, 1989Hz~2011Hz, 2289Hz~2311Hz, 2589Hz~
On these frequency bands of 2611Hz, the interference of other frequency ranges is invalid.In order to ensure the reliability of mobile unit, interference volume is entered
Line frequency analysis of spectrum is necessary.When traction current triggers interference and causes mobile unit failure to brake, comparative analysis is vehicle-mounted
The monitoring record of equipment and the uneven test result of amperometry unit, can quickly investigate thoroughly disturbed condition, while for dry
Situation is disturbed accurately to be handled.
In one embodiment of the invention, it is preferred to use four one steel rail connecting lines.As shown in Fig. 2 four one steel rails are connected
Line is adjustable connecting line.So on the other hand one side adjusting range larger can be easy to product manufacturing and maintenance spare unit standby
The configuration of part.Because the ability that uneven adjustment is carried out using rail connecting line is limited, therefore rail connection is only used only
Line adjusts traction current, and it is unrealistic to be allowed to complete equipilibrium, or even is also impossible to.On the other hand, because track circuit equipment has in itself
There is the antijamming capability of 60A out-of-balance currents, so in general, by adjusting the impedance of rail connecting line, making traction
The unbalanced interference of backflow can so solve most problems in track circuit equipment allowed band.If rail list
Side is grounded, it is necessary to is carried out railway roadbed cleaning or is eliminated the failures such as earth point short circuit, such case is only a few.In this hair
In bright, adjust without accurate numeric guide, simply provided according to the analyze data of amperometry unit for out-of-balance current
Adjustment suggestion.Whole adjustment process can be by being manually controlled.
Data display unit shows adjustment suggestion and the curve of degree of unbalancedness of amperometry unit.Such as IA ＞ IB,
Directly display and reduce certain side rail connection line impedence.The suggestion adjustment rail of impedance adjusting unit then in data display unit
The impedance of connecting line, while observing degree of unbalancedness curve, makes degree of unbalancedness reach minimum value.
In one embodiment of the invention, impedance adjustment module preferably has the rail connecting line of multi gear adjustment impedance,
Balance shaped steel rail connecting line.The impedance of existing rail connecting line is fixed, and the degree of unbalancedness of rail traction current is substantially not
It can adjust.The impedance of rail connecting line is the impedance that traction current flows through route, and its impedance flows through more greatly its traction current
Smaller, the smaller traction current for flowing through it of its impedance is bigger.Because rail section is much larger than rail connecting line section, i.e., isometric steel
Rail impedance connects line impedence much smaller than rail.For length is generally 200m or so station track circuit, rail is adjusted
The impedance of connecting line, can effectively adjust the size of the traction current by it.It is right that the rail connecting line used in the present invention passes through
Impedance is adjusted, and realizes the adjustment of traction current in rail, so as to reduce IA, IB difference, reduction traction current is to signal
The interference of equipment.
Referring to Fig. 2, the rail connecting line in the present invention is connected to apparatus for transmitting signal and/or signal receiver
The two ends of choke transformer traction circle, RL1 and RL2 represent the impedance of rail connecting line respectively.Once the impedance of rail connecting line
Adjustment, can directly affect the change of choke transformer traction circle two ends traction current.Preferred pair signal sends and set in the present invention
The impedance of the rail connecting line at standby and signal receiver two ends is adjusted respectively, realizes that relatively accurate traction current is adjusted
It is whole.It is noted that four one steel rail connecting lines of a track section can adjust impedance, naturally it is also possible to only adjust
The two one steel rails connection of apparatus for transmitting signal or two one steel rail connecting lines of signal receiver.Obviously, four one steel rails are connected
The adjusting range of line impedence is bigger, more accurate relative to the impedance adjustment scope of two one steel rail connecting lines.
Impedance adjustment module carries out impedance adjustment according to the suggestion of amperometry unit.For example as IA ＞ IB, amperometry
Unit suggestion reduces the impedance of IB places rail connecting line.During rail connection line impedence is reduced, Real Time Observation number is needed
According to the curve that degree of unbalancedness is shown in display unit, ensure that the value of degree of unbalancedness reaches minimum as much as possible.When degree of unbalancedness
When value is minimum, the interference of traction current is minimum for the interference of apparatus for transmitting signal or signal receiver in rail.
In summary, the degree of unbalancedness of the invention by monitoring rail return current traction current in real time, and according to Monitoring Data
Impedance to rail connecting line is adjusted, and reduces interference of the traction current to signalling arrangement.Utilize the present invention, it is possible to achieve iron
Road electrified section rail traction current balanced adjustment, reaches on the premise of not influenceing rail traction current unobstructed, reduces steel
The degree of unbalancedness of rail traction current, improves the functional reliability of track circuit and mobile unit.
The traction current bascule provided by the present invention for railway electrification section and its method are carried out above
Detailed description.For those of ordinary skill in the art, to its institute on the premise of without departing substantially from true spirit
Any obvious change done, will all constitute to infringement of patent right of the present invention, and will undertake corresponding legal liabilities.
Claims (5)
1. a kind of traction current bascule for railway electrification section, it is characterised in that including uneven test module and
Impedance adjustment module；The uneven test module is connected to the two ends of choke transformer traction circle；The impedance adjustment module
To adjust the rail connecting line of impedance with multi gear, it is connected between rail and choke transformer traction circle；
Traction current in the uneven test module collection rail, is analyzed sampled data, display traction current
Degree of unbalancedness and impedance adjustment suggestion；The impedance adjustment module makes injustice according to impedance adjustment suggestion adjustment impedance
Weighing apparatus degree reaches minimum.
2. traction current bascule as claimed in claim 1, it is characterised in that：
The uneven test module includes current acquisition unit, amperometry unit and data display unit；
The two ends of current acquisition unit connection choke transformer traction circle, the amperometry unit respectively with the electric current
Collection electricity is first to be connected with the data display unit；
The current acquisition unit gathers the traction current in rail and sampling data transmitting is delivered into the amperometry unit, institute
State amperometry unit to analyze the sampled data, draw degree of unbalancedness curve and impedance adjustment suggestion；The number
Impedance adjustment suggestion and degree of unbalancedness curve are shown according to display unit.
3. traction current bascule as claimed in claim 1, it is characterised in that：
The rail connecting line is four, is connected to the choke transformer of signal receiver and/or apparatus for transmitting signal
Draw the two ends of circle.
4. a kind of traction current balance method for railway electrification section, it is characterised in that comprise the following steps：
Gather the traction current in rail；
Sampled data is analyzed, degree of unbalancedness is drawn and the impedance adjustment of rail connecting line is advised, wherein it is described not
The degree of balance is the current differential that choke transformer draws circle two ends；
Advised according to the impedance adjustment, the resistance to apparatus for transmitting signal and/or the rail connecting line at signal receiver two ends
It is anti-to be adjusted respectively, the degree of unbalancedness is reached minimum.
5. traction current balance method as claimed in claim 4, it is characterised in that：
Spectrum analysis is carried out to the sampled data, extraction and analysis is carried out for the component in mobile unit frequency band range, so that
Judge interference volume in frequency band.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410073654.7A CN103832293B (en) | 2014-02-28 | 2014-02-28 | Traction current bascule and its method for railway electrification section |
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| CN201410073654.7A CN103832293B (en) | 2014-02-28 | 2014-02-28 | Traction current bascule and its method for railway electrification section |
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| CN103832293B true CN103832293B (en) | 2017-07-14 |
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| CN104166038B (en) * | 2014-07-07 | 2017-08-04 | 郑州路宏铁路器材有限公司 | For railway choke transformer from monitoring device |
| CN104714127B (en) * | 2015-02-04 | 2018-07-27 | 中国铁路总公司 | The anti-traction current interference test device of track circuit based on virtual instrument |
| CN104714066A (en) * | 2015-02-06 | 2015-06-17 | 中国铁路总公司 | Track circuit equipment traction current conductivity interference analog device |
| CN107867308B (en) * | 2016-09-23 | 2023-10-10 | 河南蓝信科技有限责任公司 | Electronic wheel set equipment and method thereof |
| CN114655274B (en) * | 2022-03-03 | 2024-02-09 | 北京全路通信信号研究设计院集团有限公司 | Double-track balancing device and application thereof and method for avoiding red light bands of track circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN87207584U (en) * | 1987-05-05 | 1988-08-17 | 北方交通大学 | Automatic rail reflux balancing apparatus for zero magnetic-flux electric railway |
| DE10022636A1 (en) * | 2000-04-28 | 2001-10-31 | Siemens Ag | Meshed track circuit |
| JP2002096659A (en) * | 2000-09-25 | 2002-04-02 | Railway Technical Res Inst | Protection device for ac/dc-switching-rail insulating section |
| CN101301896B (en) * | 2008-06-02 | 2011-04-13 | 北京全路通信信号研究设计院 | Electric impedance-adjustable industrial frequency protective type track circuit mechanical insulated joint |
| CN202372565U (en) * | 2011-12-06 | 2012-08-08 | 中铁第一勘察设计院集团有限公司 | Outdoor current real time monitoring device for railway links |
| CN102658783B (en) * | 2012-05-08 | 2014-10-15 | 北京全路通信信号研究设计院有限公司 | Device for realizing safe base reflow of voice frequency system track circuit in railroad station |
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