CN104527444B - Power supply system and method for subway vehicle - Google Patents
Power supply system and method for subway vehicle Download PDFInfo
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- CN104527444B CN104527444B CN201410782259.6A CN201410782259A CN104527444B CN 104527444 B CN104527444 B CN 104527444B CN 201410782259 A CN201410782259 A CN 201410782259A CN 104527444 B CN104527444 B CN 104527444B
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- supply unit
- power supply
- railcar
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The invention discloses a power supply system and method for a subway vehicle. The power supply system comprises at least two power supply units, and the input ends of the power supply units are connected with a direct-current power grid of the subway vehicle in parallel; the output ends of the different power supply units are independently connected to different loads, and no power supply connecting line used for connection exists between the output ends of the power supply units. The invention further discloses a power supply method for the subway vehicle. In the power supply method, according to the number and the distribution condition of the loads in the subway vehicle, the number and the installation positions of the power supply units in the power supply system are determined, and different loads are distributed to the power supply units. Compared with the prior art, the power supply system has the higher installation freedom degree, and meanwhile the power supply connecting line in the power supply system is greatly shortened, so that voltage drop on the power supply connecting line is reduced, and wiring in the subway vehicle is easier.
Description
Technical field
The present invention relates to field of track traffic, in particular relate to a kind of electric power system for railcar and method.
Background technology
For guaranteeing the reliably working of the load in railcar, it usually needs arrange redundant measure in power supply, i.e. when main power supply can not work, utilize auxiliary power supply holding load to work.In prior art, two electric supply installations of design the most ON TRAINS, two electric supply installations are load supplying simultaneously, in order to wherein during an electric supply installation cisco unity malfunction, and load still normally can work under the support of another electric supply installation.
Numerous yet with the number of loads on railcar, in order to ensure that separate unit electric supply installation has sufficiently large power, the volume and the weight that therefore result in separate unit electric supply installation are the biggest, so that electric supply installation has bigger installing space demand.
Under prior art environment, design symmetry based on railcar, according to the space requirement of installation electric supply installation, the generally drivers' cab in the head and the tail compartment of train respectively installs an electric supply installation.Compartment number between the head and the tail compartment of train can change.It can be appreciated that along with the increase of compartment number, also increasing for electric connection line between two electric supply installations and between power supply and load.Thus cause railcar exists between electric supply installation and between electric supply installation and load the longer electric connection line that supplies, thus cause there is bigger voltage drop on electric connection line, and too increase the wiring difficulty of railcar simultaneously.
Therefore, for the problem longer for electric connection line relatively greatly and between electric supply installation and load, between electric supply installation of electric supply installation power, volume and weight in existing railcar, need a kind of new electric power system for railcar to reach to reduce power, shorten the purpose for electric connection line.
Summary of the invention
For the problem that low-voltage power supply system in-line power connecting line in railcar is long, the invention provides and a kind of include at least two power supply unit for electric power system described in the electric power system of railcar, said supply unit is for by the photovoltaic conversion in the direct current network of railcar being the driving voltage needed for the load in the described railcar of driving, wherein:
The input of said supply unit is connected in parallel in the direct current network of described railcar；
The outfan of different said supply units is separate, receives in different described loads, and there is not the confession electric connection line for connecting between the outfan of different said supply units.
In one embodiment, different said supply units is arranged on the diverse location in described railcar.
In one embodiment, the outfan of said supply unit is received in the described load near said supply unit, thus reduces the length for electric connection line between said supply unit and described load.
In one embodiment, each said supply unit comprises at least two and has the voltage converter of identical input/output voltage.
In one embodiment, it is connected in the input/output terminal of said supply unit after the input/output terminal parallel connection that described voltage converter comprises all voltage converter in outfan and input, and same said supply unit.
In one embodiment, described system comprises the first power supply unit and the second power supply unit, wherein:
Described first power supply unit is arranged in the drivers' cab in head compartment of described railcar；
Described second power supply unit is arranged in the drivers' cab in afterbody compartment of described railcar.
In one embodiment, described first power supply unit be described railcar first half section in have the load supplying of relevant voltage demand；The second half section that described second power supply unit is described railcar has the load supplying of relevant voltage demand.
In one embodiment, described electric power system also includes that alarm module, described alarm module are connected with described voltage converter, for detecting the duty of described voltage converter and sending alarm when described voltage converter fault.
Present invention also offers a kind of method of supplying power to for railcar, described method of supplying power to comprises the steps of
Quantity and the installation site of the power supply unit in electric power system is determined according to the quantity of load and distribution situation in railcar；
Quantity and installation site according to said supply unit install said supply unit in described railcar；
The described load different to the distribution of each said supply unit, connects corresponding said supply unit and described load；
When systems are functioning properly, the voltage converter in same said supply unit is described load supplying simultaneously；
When a voltage converter in said supply unit breaks down, other voltage converter in said supply unit continue properly functioning, thus continual for described load supplying.
In one embodiment, described method of supplying power to also comprises alarming step, detects the duty of described electric pressure converter, sends alarm when described voltage converter fault.
Compared with prior art, present invention have the advantage that
Compared to prior art, in the electric power system of the present invention, the power of each power supply unit, volume and weight are substantially reduced, thus substantially increase the installation degree of freedom of electric power system；
Compared to prior art, need not for electric connection line between the outfan of the internal each power supply unit of electric power system of the present invention, and being also greatly shortened for electric connection line between each power supply unit and load, so not only reduce for the voltage drop on electric connection line, also make the wiring in railcar simpler.
Other features and advantages of the present invention will illustrate in the following description, and, partly become apparent from description, or understand by implementing the present invention.The purpose of the present invention and other advantages can be realized by step specifically noted in description, claims and accompanying drawing and be obtained.
Accompanying drawing explanation
Accompanying drawing is for providing a further understanding of the present invention, and constitutes a part for description, is provided commonly for explaining the present invention with embodiments of the invention, is not intended that limitation of the present invention.In the accompanying drawings:
Fig. 1 is the electric power system circuit structure sketch for railcar；
Fig. 2 is electric power system circuit structure sketch according to an embodiment of the invention.
Detailed description of the invention
Describing embodiments of the present invention in detail below with reference to drawings and Examples, to the present invention, how application technology means solve technical problem whereby, and the process that realizes reaching technique effect can fully understand and implement according to this.As long as it should be noted that do not constitute conflict, each embodiment in the present invention and each feature in each embodiment can be combined with each other, and the technical scheme formed is all within protection scope of the present invention.
For guaranteeing the reliably working of the load in railcar, prior art generally designs on same railcar two electric supply installations, two power supplies are load supplying simultaneously, in order to wherein during a power supply cisco unity malfunction, and load still normally can work under the support of another power supply.
Under prior art environment, the connection of the low-voltage power supply system on usual railcar is as shown in Figure 1.In Fig. 1, circuit 101 and circuit 102 are the direct current network in railcar.Circuit 101 provides the DC voltage of DC+110V, circuit 102 to provide the DC voltage of DC-110V.In direct current network in electric supply installation 111 and the commutator transformer that 112 is that hardware parameter is identical, and both input parallel connection access railcars (circuit 101 and 102), thus it is transfused to direct current+110V voltage and direct current-110V voltage.
It is configured with between electric supply installation 111 and the outfan of 112 for interconnective for electric connection line.What load 131 and 132 was parallel-connected between electric supply installation 111 and 112 supplies on electric connection line.Thus electric supply installation 111 and 112 can be simultaneously for load 131 and 132 power supply.Being configured with diode 121 and 122 between the outfan and confession electric connection line of electric supply installation 111 and 112, the effect of diode 121 and 122 is to prevent current reflux and current-sharing.
In the present embodiment, convenient for describing, all loads in railcar are reduced to load 131 and 132, and certain, in a practical situation, the load in railcar not only only has the load of above-mentioned the two.What load 131 and 132 specifically represented is part low-voltage load such as car lighting head lamp, the smoke alarm unit etc. of railcar.The running voltage of load 131 and 132 is DC low-voltage (DC24V), and electric supply installation 111 and 112 externally exports direct current+24V voltage and direct current-24V voltage.
Properly functioning when, the DC voltage of DC+110V and DC-110V from railcar direct current network circuit 101 and 102 is converted into DC+24V and DC-24V output by electric supply installation 111 and 112, thus provides running voltage for load 131 and 132.When (111 or 112) in electric supply installation 111 and 112 cannot normally work, another electric supply installation remaining (112 or 111) continues normal work, thus ensures to continue to put out normal driving voltage to load 131 and 132.
In the design in figure 1, it is generally the case that every electric supply installation (111 or 112) is all loads (131 and the 132) power supply on railcar simultaneously.Owing to the number of loads on railcar is numerous, in order to ensure that separate unit electric supply installation (111 or 112) has sufficiently large power, therefore the volume and the weight that result in separate unit electric supply installation (111 or 112) are the biggest, so that electric supply installation (111 or 112) has bigger installing space demand.
Under prior art environment, design symmetry based on railcar, according to the space requirement of installation electric supply installation, the generally drivers' cab in the head and the tail compartment of train respectively installs an electric supply installation.Compartment number between the head and the tail compartment of train can change.Therefore the electric connection line that supplies between power supply 111 and power supply 112 needs to cross over the length of whole railcar.It can be appreciated that along with the increase of compartment number, also increasing for electric connection line between two electric supply installations and between power supply and load.Long creates bigger line drop for electric connection line, thus causes and be not provided that stable voltage is to load.Meanwhile, the long difficulty too increasing train wiring for electric connection line.
For solving the problems referred to above, the electric power system of the present embodiment comprises at least two power supply unit.Power supply unit is for by the photovoltaic conversion in the direct current network of railcar being the driving voltage needed for the load in driving railcar.The input of all power supply units is parallel-connected in the direct current network of railcar, and the outfan of different power supply units is received in different loads.So different power supply unit independence for different load supplyings in the case of, just can be separate between the outfan of different power supply units, avoid the need between outfan by for electric connection line be connected.
Fig. 2 is the electrical schematic diagram of the electric power system according to one embodiment of the invention.In fig. 2, circuit 201 and circuit 202 are the direct current network in railcar.Circuit 201 provides the DC voltage of DC+110V, circuit 202 to provide the DC voltage of DC-110V.Load in railcar is reduced to load 221 and 222, and the running voltage of load 221 and 222 is DC low-voltage (DC24V).Electric power system comprises two power supply units 211 and 212.The input of power supply unit 211 and 212 is connected in parallel in the direct current network of railcar (circuit 201 and 202) thus is transfused to DC+110V voltage and DC-110V voltage.The outfan of power supply unit 211 and 212 is separate, is respectively load 221 and 222 power supply.Do not exist between power supply unit 211 and the outfan of 212 and supply electric connection line for connect.
Owing to the electric power system of the present invention comprises multiple power supply unit, each power supply unit is a part of load supplying on railcar.This be equivalent to the work that needed of previous electric supply installation meet at multiple power supply unit respectively and do, thus reduce the power demand of single power supply unit.Specific to the embodiment shown in Fig. 2, be equivalent to Fig. 1 being divided into two parts by the work (for load supplyings all in railcar) completed needed for electric supply installation 111 or 112 and meeting at power supply unit 211 and 212 respectively and complete (for load supplying in front/rear half part of railcar).In this case, the half output that power supply unit 211 or 212 need have electric supply installation 111 or 112 ensures that a whole set of electric power system normal operation.
Comparing powerful power supply unit, low power power supply unit has less volume and weight.Therefore comparing prior art, in the WorkForm System of the present invention, the volume and weight of single power supply unit is greatly reduced, and this space requirement allowing for installing single power supply unit is greatly reduced, so that the electric power system of the present invention has higher installation degree of freedom.
In the present embodiment, different power supply units is installed on the diverse location of railcar, and the outfan of each power supply unit is received in the load near power supply unit.As in figure 2 it is shown, power supply unit 211 is connected to load 221, the load 222 that power supply unit 212 connects.Owing to power supply unit is connected solely to neighbouring load, therefore compared to being considerably reduced for electric connection line length between prior art power supply unit and load.
In the embodiment shown in Figure 2, power supply unit 211 is arranged in the drivers' cab in railcar headstock compartment, and it is the load supplying of railcar first half；Power supply unit 212 is arranged in the drivers' cab in subway vehicle trailer railway carriage or compartment, and it is the load supplying of railcar latter half.It is not difficult to find out, the electric power system shown in Fig. 2, confession the longest the length that need to cross over half railcar of electric connection line between its load and power supply unit.Compared to the prior art shown in Fig. 1, the extreme length for electric connection line is considerably reduced.
It can be appreciated that owing to the power supply unit in the present invention has higher installation degree of freedom.In other embodiments of the present invention, during the installation site of power supply unit is not limited to the drivers' cab in railcar headstock/tailstock compartment.According to actual needs, during power supply unit may be mounted at any compartment.Thus further reduce the confession electric connection line length between power supply unit and load, reduce for the pressure drop on electric connection line, also significantly reduce wiring difficulty.
Owing to not existing for electric connection line between the outfan of different power supply units, and compared to being considerably reduced for electric connection line length between prior art power supply unit and load.Therefore compared to prior art, in the electric power system of the present embodiment, the length for electric connection line is considerably reduced.This reduces for the voltage drop on electric connection line, also make the wiring difficulty in railcar be substantially reduced simultaneously.
For realizing supplying in electric power system the optimization collocation of electric connection line, reach preferably to power effect, present invention also offers a kind of method of supplying power to for railcar.In the method for supplying power to of the present invention, first determine quantity and the installation site of the power supply unit in electric power system according to the quantity of load and distribution situation in railcar.Specific in the present embodiment, i.e. determine that electric power system comprises 2 power supply units (211 and 212), determine that power supply unit 211 is arranged in the drivers' cab in railcar headstock compartment and determines in the drivers' cab that power supply unit 212 is arranged on subway vehicle trailer railway carriage or compartment.Then quantity and installation site according to power supply unit install power supply unit in railcar.
Next different to the distribution of each power supply unit loads, connects corresponding power supply unit and load.Specific to the present embodiment being i.e. power supply unit 211 is distributed in the load (load 221) of railcar first half, power supply unit 212 is distributed in the load (load 222) of railcar latter half；Connect load 221 and power supply unit 211, and load 222 and power supply unit 212.
Next each power supply unit independence corresponding load is powered can just be utilized.In order to ensure to be load supplying reliably, in the present invention, each power supply unit is internally structured with at least two voltage converter.Each voltage converter in same power supply unit is configured to have identical input/output parameters feature, and it can drive the DC voltage of load for the DC voltage in the direct current network of railcar is converted into.When systems are functioning properly, the voltage converter in same power supply unit is load supplying simultaneously；When a voltage converter in power supply unit breaks down, other voltage converter in power supply unit continue properly functioning, thus continual for load supplying.
For reaching above-mentioned purpose of design, DC voltage converter comprises outfan and input.The outfan of the DC voltage converter in same power supply unit/input is in parallel, receives on the outfan/input of power supply unit.In the present embodiment, power supply unit 211 is internally structured with voltage converter 231 and voltage converter 241, and power supply unit 212 is internally structured with voltage converter 232 and voltage converter 242.Voltage converter 231,241,232 and 242 is the DC voltage converter being output as DC24V.
In power supply unit 211, after input/outfan simply parallel connection of voltage converter 231 and voltage converter 241, it is directly connected to the input/outfan of power supply unit 211.In power supply unit 212, after the input of voltage converter 232 and voltage converter 242/outfan parallel connection, it is directly connected to the input/outfan of power supply unit 212.In the present embodiment, for preventing from electric current flow-disturbing or adverse current occur between the outfan of voltage converter 231 and voltage converter 241, between the outfan of DC voltage converter 231 and DC voltage converter 241, diode 251 and 252 also it is built with.Equally, for preventing from electric current flow-disturbing or adverse current occur between the outfan of voltage converter 232 and voltage converter 242, between the outfan of DC voltage converter 232 and DC voltage converter 242, diode 253 and 254 also it is built with.
Assuming that one in voltage converter 231,241 cannot normally work, now another in voltage converter 231,241 the most normally works, thus continues as loading 221 normal power supplies, it is ensured that load 221 normally works.Same, one in 232,242 cannot normally work, and now another in voltage converter 232,242 the most normally works, thus continues as loading 222 normal power supplies, it is ensured that load 222 normally works.
In the present embodiment, although during a voltage converter fault in power supply unit, power supply unit still can with normal power supply, but in order to improve the operational reliability of electric power system further.It is also configured with alarm module in the electric power system of the present embodiment.Alarm module is connected with each voltage converter in power supply unit, and when certain voltage converter breaks down, alarm module issues the user with alarm, reminds the user that and repairs or change the voltage converter broken down as early as possible.
While it is disclosed that embodiment as above, but described content is only to facilitate the embodiment that understands the present invention and use, is not limited to the present invention.The method of the invention also can have other various embodiments; without departing from the spirit of the present invention; those of ordinary skill in the art are when making various corresponding change and deformation according to the present invention, but these change accordingly and deform the scope of the claims that all should belong to the present invention.
Claims (9)
1. the electric power system for railcar, it is characterised in that described electric power system includes at least two
Individual power supply unit, said supply unit is for described for driving by the photovoltaic conversion in the direct current network of railcar
The driving voltage needed for load in railcar, wherein:
The input of said supply unit is connected in parallel in the direct current network of described railcar；
The outfan of different said supply units is separate, receives in different described loads, and different
Do not exist between the outfan of said supply unit and supply electric connection line for connect；
Each said supply unit comprises at least two and has the voltage converter of identical input/output voltage, when being
When uniting properly functioning, the voltage converter in same said supply unit is described load supplying simultaneously, when described
When a voltage converter in power supply unit breaks down, other voltage converter in said supply unit continue
Continuous properly functioning, thus continual for described load supplying.
2. the system as claimed in claim 1, it is characterised in that different said supply units is arranged on institute
State the diverse location in railcar.
3. system as claimed in claim 2, it is characterised in that institute received by the outfan of said supply unit
State in the described load near power supply unit, thus reduce the confession between described said supply unit and described load
The length of electric connection line.
4. the system as claimed in claim 1, it is characterised in that described voltage converter comprise outfan and
It is connected to institute after the input/output terminal parallel connection of all voltage converter in input, and same said supply unit
State in the input/output terminal of power supply unit.
5. system as claimed in claim 3, it is characterised in that described system comprise the first power supply unit and
Second power supply unit, wherein:
Described first power supply unit is arranged in the drivers' cab in head compartment of described railcar；
Described second power supply unit is arranged in the drivers' cab in afterbody compartment of described railcar.
6. system as claimed in claim 5, it is characterised in that described first power supply unit is described subway
The first half section of vehicle has the load supplying of relevant voltage demand；Described second power supply unit is described subway
Second half section in have the load supplying of relevant voltage demand.
7. the system as claimed in claim 1, it is characterised in that said supply unit also includes alarm module,
Described alarm module is connected with described voltage converter, for detect described voltage converter duty and
Alarm is sent during described voltage converter fault.
8. the method for supplying power to for railcar, it is characterised in that described method of supplying power to comprises following step
Rapid:
The quantity of the power supply unit in electric power system is determined according to the quantity of load and distribution situation in railcar
And installation site；
Quantity and installation site according to said supply unit install described power supply list in described railcar
Unit；
The described load different to the distribution of each said supply unit, connects corresponding said supply unit and institute
State load；
When systems are functioning properly, the voltage converter in same said supply unit is that described load supplies simultaneously
Electricity；
Other electricity when a voltage converter in said supply unit breaks down, in said supply unit
Pressure converter continues properly functioning, thus continual for described load supplying.
9. method of supplying power to as claimed in claim 8, it is characterised in that described method of supplying power to also comprises warning
Step, detects the duty of described electric pressure converter, sends alarm when described voltage converter fault.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410782259.6A CN104527444B (en) | 2014-12-16 | 2014-12-16 | Power supply system and method for subway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410782259.6A CN104527444B (en) | 2014-12-16 | 2014-12-16 | Power supply system and method for subway vehicle |
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| Publication Number | Publication Date |
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| CN104527444A CN104527444A (en) | 2015-04-22 |
| CN104527444B true CN104527444B (en) | 2017-01-11 |
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| CN201410782259.6A Active CN104527444B (en) | 2014-12-16 | 2014-12-16 | Power supply system and method for subway vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108944474A (en) * | 2018-07-25 | 2018-12-07 | 合肥市智信汽车科技有限公司 | A kind of vehicle transport trailer system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101227708B1 (en) * | 2009-03-25 | 2013-01-29 | 미쓰비시덴키 가부시키가이샤 | Ac electric vehicle control device |
| CN102139695B (en) * | 2011-03-02 | 2015-07-08 | 天津市松正电动汽车技术股份有限公司 | Energy management system for electric automobile and management method therefor |
| DE102012223901A1 (en) * | 2012-12-20 | 2014-06-26 | Siemens Aktiengesellschaft | Power supply device for a rail vehicle |
| CN103213507A (en) * | 2013-04-26 | 2013-07-24 | 中国北车集团大连机车车辆有限公司 | Bullet train device in alternating current transmission electric locomotive garage |
| CN103928978A (en) * | 2014-03-14 | 2014-07-16 | 南车南京浦镇车辆有限公司 | Medium voltage redundancy power supply method based on network control |
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Address after: The age of 412001 in Hunan Province, Zhuzhou Shifeng District Road No. 169 Patentee after: ZHUZHOU CRRC TIMES ELECTRIC Co.,Ltd. Address before: The age of 412001 in Hunan Province, Zhuzhou Shifeng District Road No. 169 Patentee before: ZHUZH CSR TIMES ELECTRIC Co.,Ltd. |