CN106828202A - A kind of reflux at city rail section, field wire isolated rail joint - Google Patents
A kind of reflux at city rail section, field wire isolated rail joint Download PDFInfo
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- CN106828202A CN106828202A CN201710102508.6A CN201710102508A CN106828202A CN 106828202 A CN106828202 A CN 106828202A CN 201710102508 A CN201710102508 A CN 201710102508A CN 106828202 A CN106828202 A CN 106828202A
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- rail
- parking lot
- rolling stock
- train
- stock section
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- 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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- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention discloses the reflux IBD that the discrepancy line rail AR of a kind of reflux at city rail section, field wire isolated rail joint, including rolling stock section or parking lot is connected with main track rail MR；Reflux IBD without train by when be off state, when detecting train and passing through, send control signal Z1=1 triggerings all-controlling power electronics device V1 and V2 and simultaneously turn on.When main track support vehicle section or parking lot power, control signal Z2=1 turns on rail bonding device IBD, it is ensured that the path of traction current.The present invention can block the path that stray electrical current is back to main track rail from rolling stock section or parking lot, reduce harm of the stray electrical current to facility in rolling stock section or parking lot, while having both the function of the assessment of insulation joint insulating properties and the measurement of rail transition resistance.
Description
Technical field
The present invention relates to track traffic tractive power supply system, and in particular to one kind is exhausted for city rail section, field wire rail
Reflux at edge section.
Background technology
Direct current 750V or direct current 1500V power supply systems, train is generally used to pass through in city rail DC power-supply system
Pantograph (or shoegear) takes stream in contact net (or conductor rail) and rail between, and locomotive traction electric current is by rail return current to leading
Draw electric substation's negative pole.Subway line generally sets rolling stock section and parking lot (abbreviation section, field), make respectively Train Stopping, maintenance and
The purposes of maintenance.
In order to reduce stray electrical current, city rail main track rail takes insulation against ground to install.《Metro stray current corrosion is prevented
Shield technical regulation》CJJ49 specifies：Dual-purpose does the transition electricity between the subway rail and tunnel agent structure (or the earth) for flowing back
Resistance (is measured and is scaled the resistance value of 1km length) by block section segmentation, and 15 Ω * are not less than for newly-built circuit
Km, 3 Ω * km are not less than for working line.Rolling stock section and parking lot are mainly used in the maintenance of train, maintenance etc., to prevent car
Section, parking lot interior rail current potential is too high causes personal safety to endanger staff, will generally arrange inspection storehouse, the rail in carwash storehouse
Road is connected with grounded screen or is grounded track by independent grounding pole.
During operation, stray electrical is formed to prevent main track traction current from flowing into the earth through the rail in rolling stock section, parking lot
Stream, generally rolling stock section and parking lot discrepancy line throat set isolated rail joint isolate with main track rail, and arrange examine storehouse,
Isolation rail in rail insulation joint is also provided with before carwash storehouse.Existing already present technology is in parallel at the position of this insulation joint at two
Device in one-way on state is installed, device in one-way on state is made up of multigroup parallel diode, the traction in only Parking permitted field, rolling stock section
Backflow one direction flows to main track rail.
To prevent train wheel from being struck sparks when oversteping isolated rail joint, generally install brilliant by inverse parallel in device in one-way on state
The spark blowout of the compositions such as brake tube, when the current potential for detecting main track rail exceedes rolling stock section, parking lot rail potential certain numerical value
When, trigger turn on thyristors.Just because of this, when no train is across isolated rail joint, main track leaks to the stray electrical of the earth
Stream can collect back main track rail by device in one-way on state.Stray electrical current is during this paths circulates to parking lot, car
The equipment and personal security of section all bring great hidden danger.
If cancelling device in one-way on state herein, flowed back to just because the presence of isolated rail joint can block stray electrical current
The path of line rail, so as to avoid rolling stock section, the stray electrical current hidden danger in parking lot.But in this case, train passes through
During isolated rail joint, the rail of insulation joint both sides is respectively provided with different voltages, in fact it could happen that occur during train crosses insulation joint
Wheel and the situation of rail sparking.And when city rail main track support vehicle section, parking lot power, to ensure traction current
Proper flow, and the rail at necessary electrically conducting insulation joint two ends.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of for returning at city rail section, field wire isolated rail joint
Stream device, the stray electrical current that can block the generation of city rail rail main track is flowed back to after parking lot, rolling stock section's interior rail are collected
The path of main track, reduces stray electrical current to the harm of facility in rolling stock section, parking lot so as to ensure the safety of equipment and personnel.Together
When, the equipment is integrated with isolated rail joint insulating properties evaluation function and rolling stock section, the ballast bed place's rail in parking lot over the ground
The measurement function of transition resistance.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of reflux at city rail section, field wire isolated rail joint,
Contact net electricity segmentation DF is set in city rail electric power system, between rolling stock section or parking lot and main track；Main track steel
Isolated rail joint JJ1 is set between rail MR and rolling stock section or the discrepancy line rail AR in parking lot；In main track rail MR and rolling stock section
Or reflux IBD is set between the discrepancy line rail AR in parking lot, the structure of the reflux IBD is：
Set location sensor J1 between isolated rail joint JJ1 and main track rail MR, isolated rail joint JJ1 and rolling stock section or
Set location sensor J2 between the discrepancy line rail AR in parking lot；
Isolated rail joint JJ1 two ends reverse parallel connections all-controlling power electronics device V1 and V2 and power supply DY, switch S,
The series arm of current sensor C1 compositions；
The composite signals W synthesized by control signal Z1, Z2, Z3 control respectively all-controlling power electronics device V1 and
V2；
The control signal Z1 is that the output of position sensor J1, J2 output train seizing signal X, Y to control device is believed
Number；Position sensor J1 detects installation position and is equipped with and X=1 is exported when train is occupied, and no train exports X=0 when occupying；Position
Sensor J2 detects installation position and is equipped with and Y=1 is exported when train is occupied, and no train exports Y=0 when occupying；
The control signal Z2 is the status signal of contact net electricity segmentation DF switches, is 0 during shut-off, is 1 during conducting；
The control signal Z3 is the status signal for switching S, is 0 during shut-off, is 1 during conducting.
Further,
Voltage sensor is disposed between isolated rail joint JJ1 and rolling stock section or the discrepancy line rail AR in parking lot
C2、C3；
Copper sulphate reference electrode RE is provided between position sensor J2 and rolling stock section AR, in the copper sulphate with reference to electricity
Voltage sensor C4 is set between pole RE and rail AR；
Current sensor C1 and voltage sensor C2, C3, C4, processor is connected to by converter.
Compared with prior art, the beneficial effects of the invention are as follows：First, the present invention can effectively contain city rail rail main track
The stray electrical current invasion rolling stock section of generation, parking lot, while the present apparatus has both the assessment of isolated rail joint insulating properties and measures broken
The function of rail transition resistance over the ground at stone railway roadbed；2nd, simple structure of the present invention, control mode reliability, practical function.
Brief description of the drawings
Fig. 1 is the facility installation drawing for the assessment of isolated rail joint insulating properties.
Fig. 2 is the facility installation drawing of the transition resistance measurement for the ballast bed place's rail of the line that comes in and goes out over the ground.
Fig. 3 is structural representation of the embodiment in metro depot, parking lot.
Fig. 4 is the corresponding detection object schematic diagrames of control signal Z1.
Specific embodiment
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Contact net electricity segmentation DF is set between rolling stock section or parking lot and main track.Main track rail MR and rolling stock section or parking lot
Discrepancy line rail AR between isolated rail joint JJ1 is set.Apparatus of the present invention include：Main track rail MR and rolling stock section or parking lot
Discrepancy line rail AR between reflux IBD is set.
IBD is included in before and after isolated rail joint JJ1 and installs first position train detection equipment (position sensor) J1 and the
Two position train detection equipment (position sensor) J2.In the full-control type power electronic of isolated rail joint JJ1 two ends reverse parallel connection
Device V1 and V2 and power supply DY, switch S, the series arm of current sensor C1 compositions.
Isolated rail joint insulating properties evaluation function and the ballast bed upper rail transition resistance test function of line that comes in and goes out include：
One high-power DC power supply DY, power cathode connects main track rail side, and positive pole is connected through controlling switch S and current sensor C1
To rolling stock section or the discrepancy line rail AR sides in parking lot；In IBD by cable connection rolling stock section or the discrepancy line steel in parking lot
High precision electro the pressure sensor C2 and C3 of regular length (such as 10m) longitudinal direction rail voltage are respectively provided with before and after rail AR positions.
Copper sulphate is being buried outside isolated rail joint JJ1 horizontal ranges 50m, outside AR rail vertical ranges 30m with reference to electricity
Pole RE.Setting voltage sensor C4 detects AR rail to copper sulphate reference electrode current potential.Current sensor C1 and voltage sensor
C2, C3 and C4 converted device (converter) connect processor, by the current test information of display Dynamic Announce.
When V1, V2 simultaneously turn off state, IBD is off state；When V1, V2 are simultaneously turned on, IBD is on shape
State.
Reflux IBD without train by when be off state, can effectively contain main track produce stray electrical flow into
Invade rolling stock section or parking lot.It is the sparking problem for avoiding being produced at train crosses isolated rail joint when there is train to pass through herein,
IBD is controlled to close in time by train position inductor J1, J2, to be electrically connected main track rail and discrepancy line rail.Originally simultaneously
Device can control IBD shut-offs when without train operation, implement the assessment of isolated rail joint insulating properties and the line that comes in and goes out is ballast bed
The transition resistance test over the ground of place's rail.
Control device of the invention is：
When normal, contact net electricity segmentation DF shut-offs, its status signal Z2=0.When train passes through insulation joint JJ1, pass through
The mutual cooperation output control signal Z1=1 of position sensor J1 and J2, control rail bonding device IBD is in closure state,
Ensure that train safely passes through insulation joint JJ1.
When the measurement function using the device, during closure controlling switch S, during output control signal Z3=1, IBD is all the time
It is off state.Outputing signal to CPU carries out calculation process simultaneously for current sensor C1 and voltage sensor C2, C3, C4, leads to
Cross display screen can Dynamic Announce current time all metrical informations.
When the traction institute failure dead electricity in parking lot or rolling stock section, contact net needs normal power supply and closes contact again in storehouse
During net electricity block switch DF, for the train in guarantee parking lot or rolling stock section can normally traction current, output control signal
Z2=1, control IBD closures, until the traction institute fault recovery in parking lot or rolling stock section, DF is disconnected for contact net electricity block switch
Open.
Fig. 1 is the facility installation drawing of isolated rail joint insulating properties assessment.It includes a high-power DC power supply DY, electricity
Source negative pole connects main track rail side, and positive pole is connected to the discrepancy in rolling stock section or parking lot through controlling switch S and current sensor C1
Line rail AR sides.It is respectively provided with before and after discrepancy line rail AR positions of the IBD by cable connection rolling stock section or parking lot
High precision electro the pressure sensor C2 and C3 of regular length (such as 10m) longitudinal direction rail voltage.C2 and C3 measure 10m length steel respectively
Longitudinal pressure drop U1 and U2 on rail.
When the measurement function using the device, IBD begins during output control signal Z3=1 when closure controlling switch S is closed
State is off eventually.Current sensor C1 and voltage sensor C2, C3 converted device (converter) connection processor, it is real
The online evaluation assessment of the insulating properties of existing insulation joint JJ1.Isolated rail joint insulating properties index FJRepresent, according to
EN50122-2 (2010), works as FJMay certify that the insulating properties of insulation joint are good more than specified in standard 95%.FJCalculating
Formula is as follows：
In formula：U1,off, U2,offIt is the 1min of record, the average value of 10m rail voltage noises；U1,on, U2,onFor rail plus
Enter the voltage 1min average values after electric current.
Fig. 2 is the facility installation drawing of the transition resistance measurement for the ballast bed place's rail of the line that comes in and goes out over the ground.It includes one
Platform high-power DC power supply DY, power cathode connects main track rail side, and positive pole is connected to through controlling switch S and current sensor C1
Rolling stock section or the discrepancy line rail AR sides in parking lot.Outside isolated rail joint JJ1 horizontal ranges 50m, apart from AR steel
Copper sulphate reference electrode RE is buried outside rail vertical range 30m.C4 detects current potential of the AR rail to copper sulphate reference electrode RE.When
Using the device measurement function when, closure controlling switch S when output control signal Z3=1 when IBD be off state all the time.
The measurement signal U of the measurement signal I and voltage sensor C4 of current sensor C1REConverted device (converter) connection treatment
Device, realizes rolling stock section AR rail transition resistances RREOn-line measurement, RREComputing formula it is as follows：
In formula：UREIt is rail to the voltage of reference electrode；I is test Injection Current, unit A；L is tested vehicle section, stops
The length (maximum no more than 2km) of the line rail AR that comes in and goes out in parking lot, unit km.
Fig. 3 is structural representation of the embodiment in metro depot or parking lot.Rolling stock section or parking lot and main track it
Between set contact net electricity segmentation DF.Rail insulation is set between main track rail MR and rolling stock section or the discrepancy line rail AR in parking lot
Section JJ1.Reflux IBD is set between main track rail MR and rolling stock section or the discrepancy line rail AR in parking lot.
The structure of IBD is：Set location sensor J1, isolated rail joint between isolated rail joint JJ1 and main track rail MR
Set location sensor J2 between JJ1 and rolling stock section or the discrepancy line rail AR in parking lot；It is reverse at isolated rail joint JJ1 two ends
All-controlling power electronics device V1 and V2 in parallel and power supply DY, switch S, the series arm of current sensor C1 compositions；By controlling
The composite signals W of signal Z1, Z2, Z3 synthesis processed controls all-controlling power electronics device V1 and V2 respectively.
Specifically control process is：
When normal, contact net interconnection switch DF shut-offs, Z2=0；Controlling switch S is off, Z3=0.Work as train
When going back to rolling stock section or parking lot, sensing first for position sensor J1 carrys out car signal, position sensor J1, J2 output signal (X
=1, Y=0, X+Y>0) to the control device DR output control signal Z1=1 immediately of rail bonding device IBD, full-control type is triggered
Power electronic devices V1 and V2 are simultaneously turned on；
When train sails discrepancy line rail AR into from main track rail MR, optional position sensor J1, J2 detect train and account for
It is believed that number, X+Y >=1, Z1=1 indicates that train passes through isolated rail joint JJ1, full-control type electric power in control reflux IBD
Electronic device V1 and V2 are turned on.When position sensor J1, J2 are not detected by train seizing signal, X+Y=0, Z1=0, table
Show no train by isolated rail joint JJ1, all-controlling power electronics device V1 and V2 shut-off in control reflux IBD.
It is also such when train sails main track rail MR into from the line AR that comes in and goes out.
When the traction institute failure dead electricity in rolling stock section or parking lot, when main track support vehicle section or parking lot power, closure
Contact net electricity segmentation DF, Z2=1.For ensure train in rolling stock section or parking lot can normal traction current, control flows back
All-controlling power electronics device V1 and V2 are simultaneously turned in device IBD.
Fig. 4 is the corresponding detection object schematic diagrames of control signal Z1.Its row for including first position train detection equipment J1
The train seizing signal Y of car seizing signal X, second place train detection equipment J2.When X+Y >=1, Z1=1；Work as X+Y=0
When, Z1=0.
Claims (2)
1. a kind of for city rail section, the reflux at field wire isolated rail joint, it is characterised in that
Contact net electricity segmentation DF is set in city rail electric power system, between rolling stock section or parking lot and main track；Main track rail MR
Isolated rail joint JJ1 is set and rolling stock section or the discrepancy line rail AR in parking lot between；In main track rail MR and rolling stock section or stop
Reflux IBD is set between the discrepancy line rail AR in parking lot, and the structure of the reflux IBD is：
Set location sensor J1 between isolated rail joint JJ1 and main track rail MR, isolated rail joint JJ1 and rolling stock section or parking
Set location sensor J2 between the discrepancy line rail AR of field；
In isolated rail joint JJ1 two ends reverse parallel connections all-controlling power electronics device V1 and V2 and power supply DY, switch S, electric current
The series arm of sensor C1 compositions；
The composite signals W synthesized by control signal Z1, Z2, Z3 controls all-controlling power electronics device V1 and V2 respectively；
The control signal Z1 is output signal of position sensor J1, J2 output train seizing signal X, Y to control device；Position
Put sensor J1 and detect installation position and be equipped with and X=1 is exported when train is occupied, no train exports X=0 when occupying；Position sensing
Device J2 detects installation position and is equipped with and Y=1 is exported when train is occupied, and no train exports Y=0 when occupying；
The control signal Z2 is the status signal of contact net electricity segmentation DF switches, is 0 during shut-off, is 1 during conducting；
The control signal Z3 is the status signal for switching S, is 0 during shut-off, is 1 during conducting.
2. a kind of reflux at city rail section, field wire isolated rail joint as claimed in claim 1, its feature exists
In,
Be disposed between isolated rail joint JJ1 and rolling stock section or the discrepancy line rail AR in parking lot voltage sensor C2,
C3；
Copper sulphate reference electrode RE is provided between position sensor J2 and rolling stock section AR, in the copper sulphate reference electrode RE
Voltage sensor C4 is set between rail AR；
Current sensor C1 and voltage sensor C2, C3, C4, processor is connected to by converter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710102508.6A CN106828202B (en) | 2017-02-24 | 2017-02-24 | A kind of reflux unit at city rail section, field wire isolated rail joint |
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|---|---|---|---|
| CN201710102508.6A CN106828202B (en) | 2017-02-24 | 2017-02-24 | A kind of reflux unit at city rail section, field wire isolated rail joint |
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| CN106828202A true CN106828202A (en) | 2017-06-13 |
| CN106828202B CN106828202B (en) | 2019-03-01 |
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| CN107985131A (en) * | 2017-10-19 | 2018-05-04 | 北京全路通信信号研究设计院集团有限公司 | insulating joint |
| CN108162809A (en) * | 2018-01-19 | 2018-06-15 | 中铁二院工程集团有限责任公司 | Orientation conducting reflux |
| CN108169569A (en) * | 2018-02-08 | 2018-06-15 | 西南交通大学 | A kind of rail monitors system and its control method to drainage net transition resistance |
| CN108162803A (en) * | 2018-01-19 | 2018-06-15 | 中铁二院工程集团有限责任公司 | Combined type orientation conducting reflux |
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| CN109094427A (en) * | 2018-08-23 | 2018-12-28 | 南京铁道职业技术学院 | Metro stray current based on voltage compensation inhibits system and method |
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| CN109130961A (en) * | 2017-07-06 | 2019-01-04 | 天津中铁电气化设计研究院有限公司 | A kind of dedicated return current rail system main track segment design scheme |
| CN109470927A (en) * | 2018-11-26 | 2019-03-15 | 中铁第四勘察设计院集团有限公司 | Rail traffic rail transition resistance detection system and method |
| CN110780120A (en) * | 2019-10-17 | 2020-02-11 | 西南交通大学 | Urban rail transit direct current equipment insulation performance on-line monitoring system and control method |
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| CN109130962A (en) * | 2017-07-06 | 2019-01-04 | 天津中铁电气化设计研究院有限公司 | A kind of dedicated return current rail system field section segment design scheme |
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| CN108162809B (en) * | 2018-01-19 | 2023-07-18 | 中铁二院工程集团有限责任公司 | Directional conduction reflux device |
| CN108162803A (en) * | 2018-01-19 | 2018-06-15 | 中铁二院工程集团有限责任公司 | Combined type orientation conducting reflux |
| CN108162803B (en) * | 2018-01-19 | 2023-07-18 | 中铁二院工程集团有限责任公司 | Combined directional conduction reflux device |
| CN108162809A (en) * | 2018-01-19 | 2018-06-15 | 中铁二院工程集团有限责任公司 | Orientation conducting reflux |
| CN108169569A (en) * | 2018-02-08 | 2018-06-15 | 西南交通大学 | A kind of rail monitors system and its control method to drainage net transition resistance |
| CN108267179B (en) * | 2018-04-18 | 2024-02-20 | 湖南磁浮技术研究中心有限公司 | Device for detecting dynamic performance of collector shoe and contact rail of medium-low speed maglev train |
| CN108267179A (en) * | 2018-04-18 | 2018-07-10 | 湖南磁浮技术研究中心有限公司 | Low speed magnetic suspension train collector shoe and the device of conductor rail dynamic property detection in realization |
| CN109094427A (en) * | 2018-08-23 | 2018-12-28 | 南京铁道职业技术学院 | Metro stray current based on voltage compensation inhibits system and method |
| CN109094427B (en) * | 2018-08-23 | 2023-09-22 | 南京铁道职业技术学院 | Subway stray current suppression system and method based on voltage compensation |
| CN109109681B (en) * | 2018-10-18 | 2023-06-09 | 西南交通大学 | Control system and control method for potential of platform steel rail of subway traction station |
| CN109109681A (en) * | 2018-10-18 | 2019-01-01 | 西南交通大学 | The control system and control method of a kind of metro traction institute platform rail potential |
| CN109470927A (en) * | 2018-11-26 | 2019-03-15 | 中铁第四勘察设计院集团有限公司 | Rail traffic rail transition resistance detection system and method |
| CN109470927B (en) * | 2018-11-26 | 2023-11-24 | 中铁第四勘察设计院集团有限公司 | Rail transition resistance detection system and method for rail transit |
| CN110780120A (en) * | 2019-10-17 | 2020-02-11 | 西南交通大学 | Urban rail transit direct current equipment insulation performance on-line monitoring system and control method |
| CN110920469A (en) * | 2019-11-06 | 2020-03-27 | 南京铁道职业技术学院 | Protection architecture and process for earth rail potential |
| CN112046343A (en) * | 2020-09-07 | 2020-12-08 | 中铁第四勘察设计院集团有限公司 | Steel rail backflow device and detection system for direct-current traction power supply system |
| CN113212254A (en) * | 2021-06-10 | 2021-08-06 | 贵州电网有限责任公司 | Method for reducing urban rail transit rail potential by considering train station approaching time |
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