CN110116657A - The power supply system and method for rail vehicle - Google Patents
The power supply system and method for rail vehicle Download PDFInfo
- Publication number
- CN110116657A CN110116657A CN201910460643.7A CN201910460643A CN110116657A CN 110116657 A CN110116657 A CN 110116657A CN 201910460643 A CN201910460643 A CN 201910460643A CN 110116657 A CN110116657 A CN 110116657A
- Authority
- CN
- China
- Prior art keywords
- electric power
- power supply
- rail vehicle
- outside electric
- power network
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C3/00—Electric locomotives or railcars
- B61C3/02—Electric locomotives or railcars with electric accumulators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to a kind of power supply system of rail vehicle and methods, the system includes outside electric power network, emergency power supply and electric power supply control system, the electric power supply control system is used for when the outside electric power network can not provide electric energy for rail vehicle, is switched to and is continued to travel by emergency power supply driving rail vehicle.The present invention during use, when outside electric power network cannot power for rail vehicle, can also ensure rail vehicle reliability service, improve the reliability of vehicle power power supply.
Description
Technical field
The present invention relates to technical field of rail traffic, in particular to the power supply system and method for a kind of rail vehicle.
Background technique
Rail vehicle refers to the vehicle along rail running, can be the trolley of one people of carrying or a few individuals, is also possible to hold
Carry hundreds of large car.Current track vehicle refers generally to light rail, subway, and it is in orbit that the power of the railcar, which is electric energy,
A power rail is installed on side, also known as third rail, is that a kind of outside electric power network mode is powered, and pantagraph current collector (collector shoe) auxiliary work,
Electric power support is provided for all above equipment of rail transit train.In rail vehicle, electrical source of power only often be from
Third rail.Just there is high requirement to the reliability of third rail electrical source of power in this way, once because third rail electrical source of power is lost
It loses, vehicle can not travel, and will cause the decline of road traffic traffic volume and even block, therefore, third rail is as single power electric
Source can have very big burden.
Summary of the invention
It is an object of the invention to improve, rail vehicle power supply mode in the prior art is single, third-rail feeding burden is very big
The problem of, the power supply system and method for a kind of rail vehicle are provided.
In order to achieve the above-mentioned object of the invention, the embodiment of the invention provides following technical schemes:
A kind of power supply system of rail vehicle, including outside electric power network, emergency power supply and electric power supply control system, it is described for automatically controlled
System processed is used for when the outside electric power network can not provide electric energy for rail vehicle, is switched to and is driven rail vehicle by emergency power supply
Continue to travel.
It by the setting of emergency power supply, is powered when outside electric power network cannot power by outside electric power network, can ensure railcar
Continue to travel.It should be noted that power supply system of the present invention is particularly suitable for Mini-railway vehicle, i.e., only accommodate one or 10 people
Rail vehicle below, because of the limited energy of emergency power supply, power-on time is limited, if increasing the storage electric energy of emergency power supply
Ability, will greatly improve emergency power supply cost, by be suitable for Mini-railway vehicle, not only can be reliable with support vehicles
Operation, and cost can be reduced as much as possible.
In the scheme advanced optimized, the power supply system of the rail vehicle further includes charger, the charger
Input terminal connection outside electric power network electric energy output end, the input that the output end of charger passes through switching device connection lithium iron battery
End is charged for lithium iron battery.
On the other hand, a kind of method of supplying power to of rail vehicle is additionally provided in the present embodiment, comprising steps of outside real-time monitoring
Whether can be used, if it is available, then electric power supply control system control continues to be powered by outside electric power network, if unavailable, power if getting access to grid
It is rail vehicle power supply that control system, which is switched to by emergency power supply,.
In one embodiment, the step of whether the real-time monitoring outside electric power network can be used, comprising: real-time monitoring is external
The output voltage of power grid, and judge whether the output voltage of outside electric power network is more than or equal to the voltage available threshold value of setting, if so,
Then it is judged as that outside electric power network is available；If it is not, then continuing to judge whether the output voltage of outside electric power network is less than or equal to setting not
Otherwise voltage available threshold value is judged as that outside electric power network is available if it is, being judged as that outside electric power network is unavailable.
Compared with prior art, beneficial effects of the present invention: the present invention during use, when outside electric power network cannot be
When rail vehicle is powered, it can also ensure rail vehicle reliability service, improve the reliability of vehicle power power supply.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structural schematic diagram of power supply system in the embodiment of the present invention.
Fig. 2 is the charging flow figure to lithium iron battery.
Fig. 3 is electrical source of power switching flow figure in the embodiment of the present invention.
Fig. 4 is to judge the whether available flow chart of outside electric power network.
Specific embodiment
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and be designed with a variety of different configurations herein.Cause
This, is not intended to limit claimed invention to the detailed description of the embodiment of the present invention provided in the accompanying drawings below
Range, but it is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
Before describing the present invention, first the meaning for the character being related to is illustrated.
V3rdFor the output voltage of outside electric power network (external electrical network powered to vehicle)；VBFor the output voltage of lithium iron battery；
D1-D2 is diode, and K1-K3 is switch；VNHFor the available voltage threshold of outside electric power network；VNLIt is unavailable for outside electric power network
Voltage threshold, VNH>VNL；VBH2Stop the voltage threshold of charging, V for batteryBL2For the voltage threshold that battery starts to charge, VBH2
>VBL2.Above-mentioned voltage threshold is set by the user.
As shown in Figure 1, having illustratively provided a kind of power supply system of rail vehicle in the present embodiment, including external electricity
Net, emergency power supply and electric power supply control system, wherein emergency power supply uses lithium iron battery, naturally it is also possible to which other batteries are realized.
More specifically, in one embodiment, outside electric power network passes through current collecting equipment, first switch device K1 and the one or two
Pole pipe D1 is connected to vehicle motor drive, provides electrical source of power to vehicle, often uses electrical source of power for vehicle.First diode D1
The positive terminal of outside electric power network is connected, that is, connects the electric energy output end of current collecting equipment, being realized with this only allows electric current from current collecting equipment
Vehicle motor drive is flowed to, the current direction current collecting equipment without allowing lithium iron battery.If the supply voltage of outside electric power network with
Needed for vehicle motor drive when voltage difference, transformation or/and fairing should be also used, the supply voltage of outside electric power network is become
It gets in return consistent with voltage needed for vehicle motor drive.
Please continue to refer to Fig. 1, lithium iron battery is connected to vehicular electric machine by second switch device K2 and the second diode D2
Driver provides electrical source of power for vehicle.
It further include charger in above-mentioned power supply system, the input terminal of charger connects the electrical source of power that outside electric power network provides,
The output end of charger is charged by switching device K3 connection lithium iron battery for lithium iron battery.
As the scheme that advanced optimizes, switching device is different according to usage scenario, power and electric current, optional IGBT,
The switchgears such as MOSFET, thyristor, contactor, relay.
The electric power supply control system includes controller, outside electric power network voltage sensor, lithium iron battery voltage sensor, external
Grid voltage sensor, lithium iron battery voltage sensor, first switch device, second switch device are connect with controller respectively.
Outside electric power network voltage sensor lithium iron battery voltage sensor is respectively used to acquisition outside electric power network output voltage V3rd, lithium iron battery
Output voltage VB, it is vehicular electric machine that controller, which controls the shutdown or closure of each switching device according to each sensor signal,
Driver provides electrical source of power, and controls lithium iron battery charging.
Specifically, charger is to the charging process of lithium iron battery as shown in Fig. 2, the output voltage of real-time monitoring lithium iron battery
VBIf VB≤VBL2, then outside electric power network is charged by charger to lithium iron battery, if VB≥VBH2, then charger stops giving iron lithium electricity
Pond charging；VBL2For the voltage threshold that the lithium iron battery of setting starts to charge, VBH2Stop the electricity of charging for the lithium iron battery of setting
Press threshold value.
Power supply system based on above structure, outside electric power network is as major impetus power supply, and lithium iron battery is as emergency power supply.
It is powered under normal circumstances by outside electric power network, only is not enough to drive track in the electric energy that outside electric power network can not provide electric energy or offer
When vehicle driving, emergency power supply is enabled just as rail vehicle power supply.That is the collected voltage of outside electric power network voltage sensor is less than
When the available voltage threshold of outside electric power network, then output signal control first switch device K1 is disconnected controller, and output signal control
K2 closure processed, switches to and is powered by lithium iron battery.
Fig. 3-4 is please referred to, a kind of method of supplying power to of rail vehicle is provided in the embodiment of the present invention, comprising steps of in real time
Whether monitoring outside electric power network can be used, if it is available, then electric power supply control system control continues to be powered by outside electric power network, if unavailable,
It is rail vehicle power supply that then electric power supply control system, which is switched to by emergency power supply,.
Wherein, judge that whether available outside electric power network flow chart be as shown in Figure 4.By flow diagram, work as V3rd≥VNHWhen,
Outside electric power network can power to rail vehicle, i.e., outside electric power network is available；Work as V3rd≤VNLWhen, outside electric power network cannot be to railcar
Power supply, i.e., outside electric power network is unavailable；Work as VNL< V3rd< VNHWhen, outside electric power network power supply available mode is constant, i.e. outside electric power network
It can use.
Referring to figure 3., Fig. 3 is power supply mode switching flow.During traveling, meeting real-time monitoring simultaneously judges external vehicle
Whether power grid can be used, when outside electric power network can be used, outside electric power network as electrical source of power be rail vehicle power, when outside electric power network not
When available, then judge whether lithium iron battery can be used, when lithium iron battery can be used, then switch to and powered by lithium iron battery, and prolonging
When certain time (such as 0.5 second) disconnect outside electric power network afterwards.The purpose of delay certain time is to ensure that lithium iron battery is fully connected
And power, lead to disconnection fault to avoid not being successfully accessed.If lithium iron battery is unavailable, rail vehicle will lose dynamic
Power, but it is exactly to use as emergency power supply that the purpose that lithium iron battery is arranged, which is, so the not available situation of lithium iron battery is almost
It is not present, the step of whether battery can be used is judged accordingly it is also possible to save.Judging the whether available process of lithium iron battery is: when
VB≥VBHWhen, battery can power to rail vehicle, i.e., battery is available, and otherwise battery is unavailable, VBHIt is available for the battery of setting
Voltage threshold.
Generally, it may be because outside electric power network breaks down that outside electric power network is unavailable, and failure may repair in time,
The long period may be needed to repair, therefore even if outside electric power network stop power when, also it is necessary to be monitored to outside electric power network,
When it replys available mode, still powered by outside electric power network.Therefore, external when monitoring in the scheme advanced optimized
When power grid service restoration can be used, then outside electric power network is put into as rail vehicle power supply, and battery power supply is disconnected after delay 0.5 second.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.
Claims (10)
1. a kind of power supply system of rail vehicle, which is characterized in that including outside electric power network, emergency power supply and electric power supply control system,
The electric power supply control system is used for when the outside electric power network can not provide electric energy for rail vehicle, is switched to and is driven by emergency power supply
Dynamic rail vehicle continues to travel.
2. the power supply system of rail vehicle according to claim 1, which is characterized in that the emergency power supply is iron lithium electricity
Pond.
3. the power supply system of rail vehicle according to claim 2, which is characterized in that it further include charger, the charging
The electric energy output end of the input terminal connection outside electric power network of machine, the output end of charger connect the defeated of lithium iron battery by switching device
Enter end, charges for lithium iron battery.
4. the power supply system of rail vehicle according to claim 3, which is characterized in that the outside electric power network passes through collection Denso
Output electric energy is set, the outside electric power network includes by first switch circuit connection to vehicle motor drive, first switch circuit
Concatenated first switch device and first diode, and the electric energy output end of the anode connection current collecting equipment of first diode.
5. the power supply system of rail vehicle according to claim 4, which is characterized in that the battery passes through second switch electricity
Road is connected to vehicle motor drive, and second switch circuit includes second switch device and the second diode, and the second diode
Anode connection battery electric energy output end.
6. the power supply system of rail vehicle according to claim 5, which is characterized in that the electric power supply control system includes control
Device processed, outside electric power network voltage sensor, lithium iron battery voltage sensor, outside electric power network voltage sensor, lithium iron battery voltage pass
Sensor, first switch device, second switch device are connect with controller respectively.
7. a kind of method of supplying power to of rail vehicle, which is characterized in that comprising steps of whether real-time monitoring outside electric power network can be used, such as
Fruit is available, then electric power supply control system control continues to be powered by outside electric power network, if unavailable, electric power supply control system is switched to by answering
Urgent telegram source is rail vehicle power supply.
8. the method for supplying power to of rail vehicle according to claim 7, which is characterized in that the real-time monitoring outside electric power network is
No available step, comprising:
The output voltage of real-time monitoring outside electric power network, and judge whether the output voltage of outside electric power network is more than or equal to the available of setting
Voltage threshold, if it is, being judged as that outside electric power network is available；If it is not, then continue to judge outside electric power network output voltage whether
Otherwise unavailable voltage threshold less than or equal to setting is judged as outside electric power network if it is, being judged as that outside electric power network is unavailable
It can use.
9. the method for supplying power to of rail vehicle according to claim 7, which is characterized in that when rail vehicle is supplied by outside electric power network
When cutting shifts to emergency power supply power supply, after emergency power supply incision, outside electric power network is disconnected again after postponing setting time.
10. according to the method for supplying power to for the rail vehicle that claim 7 is stated, which is characterized in that the emergency power supply is lithium iron battery；
The method also includes steps: when rail vehicle is powered by outside electric power network, the output voltage V of real-time monitoring lithium iron batteryBIf
VB≤VBL2, then outside electric power network is charged by charger to lithium iron battery, if VB≥VBH2, then charger stops filling to lithium iron battery
Electricity；VBL2For the voltage threshold that the lithium iron battery of setting starts to charge, VBH2Stop the voltage threshold of charging for the lithium iron battery of setting
Value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910460643.7A CN110116657A (en) | 2019-05-30 | 2019-05-30 | The power supply system and method for rail vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910460643.7A CN110116657A (en) | 2019-05-30 | 2019-05-30 | The power supply system and method for rail vehicle |
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| Publication Number | Publication Date |
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| CN110116657A true CN110116657A (en) | 2019-08-13 |
Family
ID=67523587
Family Applications (1)
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| CN201910460643.7A Pending CN110116657A (en) | 2019-05-30 | 2019-05-30 | The power supply system and method for rail vehicle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110422058A (en) * | 2019-08-29 | 2019-11-08 | 中车唐山机车车辆有限公司 | Emergency vehicle transmission system |
| CN112776831A (en) * | 2019-11-06 | 2021-05-11 | 庞巴迪运输有限公司 | Operating a rail vehicle to limit power peaks in a power supply |
| RU2817226C1 (en) * | 2023-08-15 | 2024-04-11 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Уральский государственный университет путей сообщения" | Railway electric traction system |
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