CN206186825U - Direct current traction power supply system , distributed DC power supply and corresponding casing - Google Patents

Abstract

The utility model discloses be entitled as " direct current traction power supply system, distributed DC power supply and corresponding casing ". According to the utility model discloses a direct current traction power supply system, including traction substation and direct current traction power supply network, the direct current traction power supply network is connected with traction substation and is used for providing the electric energy that is provided by traction substation, towing vehicle and direct current traction power supply internet access for the towing vehicle. Direct current traction power supply system includes that at least one distribution DC power supply and direct current traction power supply internet access are used for providing the electric energy for DC traction function network. Traction substation (12) continuous conveyor's the biggest electric power is the at least twice of being given the biggest electric power of direct current traction power supply network (14) by distributed DC power supply (20) continuous conveyor, preferred at least three times, the most at least quadruple.

Description

DC traction power-supply system, distributed DC power and corresponding housing

Technical field

The utility model is related to a kind of being used for electric traction vehicle, such as tramcar, such as rapid transit, subway Road, underground trains or subway, locomotive propulsion train or self-propelled car, railcar or trolleybus etc. provide the direct current of traction electric power Tractive power supply system.It is further to a kind of distributed DC power and a kind of housing of distributed DC power.

Background technology

Decline due to providing the network voltage between electric substation of the electric energy to direct-current traction power supply network, electric car operator exists Increasing problem is experienced on its direct-current traction power supply network.This problem is increasingly protruded, because having bright Electric traction vehicle quantity and continuous density increase in DC traction power-supply system, and because new electrically propelled traction vehicle The older electric traction vehicle of ratio needs more electric power, and the older electric traction vehicle is when planning and builds and includes leading Can be used during the DC traction power-supply system for drawing electric substation and direct-current traction power supply network.

Utility model content

The purpose of this utility model is to provide for a technical scheme for solving the above problems.The problem is by such as right It is required that a kind of DC traction power-supply system described in 1 is solved.The problem can also be by as claimed in claim 13 distributed The shell of dc source and electric power as claimed in claim 9 and/or electronic component is solved.The utility model is more favourable Improvement be defined in the dependent claims.According to DC traction power-supply system of the present utility model, including traction power transformation And the direct-current traction power supply network that is connected with traction substation, the electric energy that DC traction power-supply system provides electric substation provides The towing vehicle of direct-current traction power supply network connection is given, wherein DC traction power-supply system includes and direct-current traction power supply network At least one distributed DC traction power source of connection, gives direct-current traction power supply network, and wherein draw power transformation to provide electric energy The maximum electric power of institute's continuous conveying is the maximum electric power that distributed DC power is delivered continuously to direct-current traction power supply network At least twice, preferably at least three times, most preferably at least four times.

According to the utility model, the advantage of DC traction power-supply system is that existing infrastructure particularly draws power transformation Institute, can further use, therefore former investment is utilized and protects.DC traction power-supply system also makes distributed DC Power supply places DC traction power-supply system wherein and shows the unstable position of electric power or be possibly realized close to the position.It is logical Cross and distributed DC power is arranged on the position, the pressure of overall DC traction power-supply system is smaller and compared to using work( The bigger traction substation of rate substitutes the conventional solution of existing traction substation with voltage's distribiuting evenly.Additionally, The pressure of direct-current traction power supply network is smaller also to cause less cost, because direct-current traction power supply network needs are less Investment, for example need less trolley line to update etc..

Further, since compared with traction substation, the electric power of distributed DC power is smaller with therefore physical size, distribution Formula dc source needs less space.This causes that distributed DC power is likely to be positioned at via direct-current traction power supply system System operator occupied spatially, or the space that must be obtained at least below traction substation space requirement turn into can Energy.

According to one embodiment of the present utility model, at least one distributed DC power is placed on DC traction On the increased position of electricity needs of supply network.

This embodiment this have the advantage that, due to distributed power source closer to the electric traction vehicle for needing electric power so that Less in the electric current of trolley line long distance delivery, this causes less energy loss and thereby causes that cost is lower.

In addition, when at least one distributed DC power is placed on the position for increasing electricity needs, DC traction is supplied Electric network in itself and need not be altered to conveying required for electric power to increase electricity needs position.Direct-current traction power supply net Network may be limited in certain position in itself uses maximum power, if it is this that especially this is located away from during traction substation Sample.

According to further embodiment, at least one distributed DC power is installed in the stop of towing vehicle, peace Mounted in the towing vehicle track ascent stage and/or installed in the point for towing vehicle " steering ".

The embodiment this have the advantage that distributed DC power is placed on direct-current traction power supply network and typically shows Go out instable position, because new towing vehicle is planned and built in accelerator compared to DC traction power-supply system When towing vehicle the more electric power of consumption in operation.Especially for electric car stopping or the situation of turning point, also with further Advantage, i.e. distributed DC power can be placed on the operator of DC traction power-supply system in the position of application, this So that total cost is lower.

According to one embodiment of the present utility model, DC traction power-supply system includes at least five distributed DCs electricity Source, preferably at least ten distributed DC powers and more preferably at least 20 distributed DC powers.

Above-described embodiment this have the advantage that, the distributed DC power with suitable electric power and smaller physical size can be with It is placed on the place that DC traction power-supply system shows unstable power.

According to further embodiment, DC traction power-supply system includes multiple traction substations, and each traction power transformation Five distributed DC powers are at least installed, preferably each traction substation at least installs ten distributed DC powers and more It is preferred that each traction substation at least installs 20 distributed DC powers.

As in the above-described embodiments, the embodiment this have the advantage that, with suitable electric power and smaller physical size point Cloth dc source can be placed on the place that DC traction power-supply system shows unstable power.

According to further embodiment, at least one distributed DC power is powered by AC network.

The embodiment this have the advantage that, by the power supply direct-current traction power supply network of AC network.Therefore allow every There is individual distributed DC power suitable electric power also to make its physical size smaller.

According to further embodiment, at least one distributed DC power includes energy storing device and by direct current Traction power supply network power supply.

The embodiment this have the advantage that, is for being carried to distributed DC power with the connection of direct-current traction power supply network Power supply power and the offer electric power from distributed DC power to direct-current traction power supply network.Extra connection with other power networks is not It is necessary.Therefore, the embodiment this have the advantage that, it is also possible to used in the position without other power availables.

According to further embodiment of the present utility model, at least one distributed DC power is by cable connection to directly Stream traction power supply network, and the length of wherein described cable is less than 100 meters.

According to further aspect of the present utility model, there is provided a kind of for electric power and/or the housing of electronic component, preferably Ground provides a kind of housing for being connected to the distributed DC power of DC traction power-supply system.The housing includes being placed on The first shell on ground level, is placed second housing above ground level and the support knot for supporting the second housing Structure, wherein first shell and the second housing are for accommodating at least one switching device, power inverter and electric power Transformer.

The technical solution of the utility model is this have the advantage that, it is thus only necessary to which housing is installed in very small region, preferably The first shell for being placed on the ground plane can place on the ground, be partially placed at ground or be completely placed in ground. Once it is only partially disposed on ground, the shell is used as substrate, is used for example as workbench of tram stop or the like. The second housing is placed above ground level, therefore it hardly uses available space, is preferably positioned at tram stop.

According to further embodiment, supporting construction is formed by bar.

According to further embodiment, supporting construction is for second housing to be placed on more than ground at least two meters.

The embodiment this have the advantage that it is sufficiently high that the second housing is placed, and people may stand in supporting construction Side, and available space can be effectively utilized.

According to further aspect of the present utility model, there is provided a kind of for providing dividing for traction power to electric traction vehicle Cloth dc source.Preferably, there is provided the distributed power source in DC traction power-supply system.The distributed DC power Including the housing for electric power and/or electronic component, wherein the first shell and second housing include at least one switching device, work( Rate converter and power transformer.

According to further embodiment, the switching device is placed on first shell, the power transformer quilt The second housing is placed on, the power inverter is placed in the first shell and second housing.

According to further embodiment, switching device is DC switchgear.

According to further embodiment, power inverter is rectifier.

According to further embodiment, power inverter is diode bridge rectifier.The embodiment has the advantage that Can be that cost-efficient solution is provided.

According to further embodiment, power inverter is IGCT control rectifier.The embodiment has the advantage that Can be that cost-efficient solution is provided, and more enough more preferable network characteristics controlled close to distributed DC power.

According to further embodiment, rectifier is active rectifier by impulse modulation control.The embodiment has Advantage can be to better control over network characteristic in the output end of rectifier.Furthermore it is possible to it is active rectification to control to be injected into Device provides the harmonic wave of the AC network of energy.

Further embodiment is listed in the dependent claims.

Brief description of the drawings

Theme of the present utility model will be described in further detail below, and reference is said in appended schematic figures Bright preferred embodiment, wherein：

Fig. 1 is indicated according to a kind of DC traction power-supply system of the present utility model；

Fig. 2 indicates the first embodiment of distributed DC power, and for the housing of this distributed DC power；With And

Fig. 3 indicates the second embodiment and its shell of distributed DC power.

In principle, identical or function identical part use identical reference in figure.By way of example Described one exemplary embodiment explains theme of the present utility model, and without restriction effect.

Specific embodiment

Fig. 1 shows a kind of DC traction power-supply system 10.In the above-mentioned paragraph and paragraphs below of specification, DC be on The abbreviation of " DC current ".The DC traction power-supply system 10 includes being provided the traction of electric power to direct-current traction power supply network 14 Electric substation 12.The direct-current traction power supply network 14 for being connected to the traction substation 12 includes the line of first line 16 and second Road 18.The first line 16 is the railway line of typical orbit or for example, be may also be in the case where trolleybus is connected to it Trolley line.Second circuit 18 is typical trolley line or the 3rd railway line, for example, such as the typical side used by rapid transit Formula, that is, underground railway, underground trains or subway.Direct-current traction power supply network is for providing electric power from traction substation 12 Give electric drive towing vehicle, such as train, electric car, subway, trolleybus, railcar etc..

Additionally, Fig. 1 shows distributed DC power 20.Each distributed DC power 20 is connected to direct current by cable 19 Traction power supply network 14, the wherein length of cable 19 should be shorter, but can have certain length, for example, long to 100 meters.Especially It is that in the case of direct-current traction power supply network part or temporary overload, distributed DC power 20 is to direct-current traction power supply network Electric power is provided.Comparing traction substation 12 with the less distributed DC power 20 of electric power and physical size has smaller chi Very little, the maximum electric power of the particularly continuous conveying of traction substation 12 is the maximum electricity that distributed DC power 20 is continuously conveyed At least twice of power.

For example, electric car network traction substation may in the short time of several seconds continuous conveying 1200kW to 3600kW Electric power.The distributed DC power may in the short time of several seconds continuous conveying 300kW to 900kW.

Fig. 1 also show more than one distributed DC power 20, for example, led installed in each the figure illustrates two Draw the distributed DC power 20 in electric substation 12, to increase topically effective energy on supply network 14.

The electric power of distributed DC power 20 can be provided by AC network, the distrbution network in such as city.Alternatively, Electric power can be provided by direct-current traction power supply network 14.This requires solution party of the distributed DC power 20 equipped with energy stores Case so that when having unnecessary utilisable energy in direct-current traction power supply network, can be obtained from direct-current traction power supply network 14 Electric energy, and provide electric energy to direct-current traction power supply network 14 in the case where local power is unstable.

In the case of once distributed DC power is equipped with the solution of energy stores, the system is likely to be positioned at In rack on ground or ground.

As shown in figure 1, because the unstable of direct-current traction power supply network 14 typically must be from static in towing vehicle The position for accelerating to full speed occurs, and distributed DC power is preferably mounted at station or stop 32 for towing vehicle.This Outward, Virtual network operator generally possesses the real estate at stop, thus when new distributed DC power is installed without reference to The purchase of real estate and produce extra charge.As described above, once because the electric power of a large amount of towing vehicles and new towing vehicle is needed When asking and causing unstable power in direct-current traction power supply network 14, distributed DC power 20 may be installed as traction The annex of electric substation 12.Additionally, distributed DC power is likely to be positioned at its in addition to stop of direct-current traction power supply network Its position, the position also have increase electric power demand, be for example expert at reach mountain track rising part or towing vehicle it is online At the turning point at road end.

Fig. 2 shows the first embodiment of distributed DC power 20.The distributed DC power 20 is included for pacifying The housing 62 of dress electric power and/or electronic component, and electric power and/or electronic component.

The housing includes the first shell 64, and it is arranged on ground level 66.Ground level can be with, for example, be by road or Pavement is formed.First shell 64 is likely to be brought into and is substantially lower than at ground level 66.Alternately, its upper surface may Form the part on road or pavement.In a further alternative, the possible only part of first shell is placed on ground Plane.In a further alternative, first shell is likely to be positioned on ground.

Housing 62 also includes second housing 68, and it is installed above ground level and it is supported by for forming second housing 68 The bar 70 ' of structure 70 is supported.In alternative embodiments, the supporting construction may by be placed on electric car stop thermometer screen or Analog is constituted.Additionally, thermometer screen and bar to combine to form supporting construction also possible.The second housing 68 is placed in Horizon At least 2 meters on face, or, in other words, the second housing 68 is placed on road or pavement at least 2 meters.

Include switching device 80, particularly DC switchgear in the distributed DC power 20 shown in Fig. 2.Switching device 80 are placed in the first shell 64.Additionally, distributed DC power 20 includes the oily transformer being placed in second housing 68 82.And, include power inverter 84 in distributed DC power 20, particularly it is also disposed in the rectification in second housing 68 Device.Alternately, as shown in figure 3, power inverter 84 can also be placed on the first shell 64.Also having can be by the switch Device, the transformer and the power inverter are placed in first shell or the second housing.

The input side of the transformer 82 is connected not in this further description AC power.The AC power can be with It is usually used AC distribution net in city.The outlet side of the transformer 82 connects the rectifier 84.The rectifier 84 DC side is connected to switching device 80, and by the switching device 80, distributed DC power 20 can be with DC traction Supply network 14 is connected and disconnected from.

Oily transformer can be replaced using dry type transformer.

As described in Figure 2, once the rectifier 84 is placed in the second housing, power inverter may pass through Oil is cooled down, and the oil is also used for the cooling and insulation of transformer.Air cooling solution is also possible.

Power inverter 84 can be by diode bridge rectifier, IGCT control rectifier or by active power conversion Device is formed.The active power converter can be pulse width modulation converter.Additionally, active power converter is probably Step-down and/or boost converter type be used for active accommodation its DC side output voltage.

Reference numerals list

10 direct-current traction power supplies

12 traction substations

14 direct-current traction power supply networks

16 first line

18 second circuits

19 cables

20 distributed DC powers

32 stations or stop

62 housings

64 first shells

66 ground levels

68 second housings

70 supporting constructions

70 ' bars

80 switching devices

82 transformers

84 power inverters.

Claims (24)

1. a kind of DC traction power-supply system (10), including：

- traction substation (12) and

- it is connected to the direct-current traction power supply network (14) of the traction substation (12), the DC traction power-supply system will be by The electric energy of traction substation (12) supply is supplied to the towing vehicle for being connected to the direct-current traction power supply network (14), its In

The DC traction power-supply system (10) is including being connected to direct-current traction power supply network (14) for being supplied to DC traction Electric network (14) provides at least one distributed DC power (20) of electric energy, and wherein, the traction substation (12) is even The maximum electric power of continuous conveying is that the distributed DC power (20) is continuously delivered to the direct-current traction power supply network (14) at least twice of maximum electric power.

2. DC traction power-supply system (10) as claimed in claim 1, wherein, traction substation (12) continuous conveying Maximum electric power is the maximum that the distributed DC power (20) is continuously delivered to the direct-current traction power supply network (14) At least three times of electrical power.

3. DC traction power-supply system (10) as claimed in claim 1, wherein, traction substation (12) continuous conveying Maximum electric power is the maximum that the distributed DC power (20) is continuously delivered to the direct-current traction power supply network (14) At least four times of electrical power.

4. the DC traction power-supply system (10) as described in claim any one of 1-3, wherein, at least one distributed direct Stream power supply (20) is placed on the position of the increase power demand of the direct-current traction power supply network (14).

5. the DC traction power-supply system as described in claim any one of 1-3, wherein, at least one distributed DC electricity Source (20) is installed in the stop (32) for towing vehicle, be installed in towing vehicle operation track ascent stage and/ Or be installed in for towing vehicle turning point.

6. the DC traction power-supply system as described in claim any one of 1-3, wherein, the DC traction power-supply system (10) Including at least five distributed DC powers (20).

7. DC traction power-supply system as claimed in claim 6, wherein, the DC traction power-supply system (10) is including extremely Few ten distributed DC powers (20).

8. DC traction power-supply system as claimed in claim 6, wherein, the DC traction power-supply system (10) is including at least 20 distributed DC powers (20).

9. DC traction power-supply system as claimed in claim 6, wherein, the DC traction power-supply system (10) is including multiple Traction substation (12), and wherein each traction substation (12) installs at least five distributed DC powers (20).

10. DC traction power-supply system as claimed in claim 9, wherein, each traction substation (12) installs at least ten Distributed DC power (20).

11. DC traction power-supply systems as claimed in claim 9, wherein, each traction substation (12) installs at least 20 Individual distributed DC power (20).

12. DC traction power-supply system (10) as described in claim any one of 1-3, wherein at least one distributed direct Stream power supply (20) is by cable connection to direct-current traction power supply network (14), and the length of wherein described cable (19) is less than one Hundred meters.

13. DC traction power-supply system as described in claim any one of 1-3, wherein at least one distributed DC is electric Source (20) is powered by AC network.

14. DC traction power-supply system as described in claim any one of 1-3, wherein at least one distributed DC is electric Source (20) powers including energy storing device and by direct-current traction power supply network (14).

A kind of distributed DC power (20) of 15. DC traction power-supply systems for as described in claim any one of 1-14 Electric power and/or electronic component housing (62), its first shell (64) for including being placed on ground level (66) place is placed on Second housing (68) more than ground level (66) and the supporting construction (70) for supporting the second housing (68), wherein described First shell (64) and the second housing (68) be for accommodate at least one switching device (80), power inverter (84) and Power transformer (82).

16. housings as claimed in claim 15, wherein first shell (64) is placed on ground level.

17. housing as described in claim 15 or 16, wherein the supporting construction (70) is bar (70 ').

18. housing as described in claim 15 or 16, wherein the supporting construction (70) is for by the second housing (68) Place at least 2 meters on ground level.

A kind of 19. distributed DC powers (20) for providing traction power to electric traction vehicle, wherein distributed DC Power supply is arranged on the DC traction power-supply system as described in claim any one of 1-14, distributed DC power (20) bag The housing (62) for electric power and/or electronic component as described in claim any one of 15-18 is included, wherein first shell (64) and the second housing (68) includes at least one switching device (80), power inverter (84) and power transformer (82)。

20. distributed DC powers as claimed in claim 19, wherein the switching device (80) is placed on described first In shell (64), the power transformer (82) is placed on the second housing (68), and the power inverter (84) quilt It is placed in the first shell (64) and second housing (68).

21. distributed DC power as described in claim 19 or 20, wherein the power inverter (84) is rectifier.

22. distributed DC power as described in claim 19 or 20, wherein the power inverter (84) is diode bridge Formula rectifier.

23. distributed DC power as described in claim 19 or 20, wherein the power inverter (84) is by pulse The active rectifier of width modulated control.

24. distributed DC power as described in claim 19 or 20, wherein the power inverter (84) is IGCT control The rectifier of system.