阅读说明：本技术 微轨交通供电系统 (Micro-rail traffic power supply system ) 是由 温从溪 魏亚莉 高珊 戈鑫 晗迪布 刘超 曹宇航 肖柱三 王思奇 郑英伟 于 2020-03-20 设计创作，主要内容包括：本申请实施例提供一种微轨交通供电系统,涉及微轨交通技术,用于克服相关技术中滑触线压降较严重导致难以满足微轨车辆运行过程中的用电需求。所述微轨交通供电系统,包括：多段滑触线,用于设于轨道梁内部的两侧,位于同侧的多段滑触线沿轨道梁的延伸方向依次布设；电力变换器,与每段所述滑触线电连接,用于与高压主线路电连接,用于将所述高压主线路提供的电压转换为与微轨车辆相适配的电压并供给所述滑触线。(The embodiment of the application provides a micro-rail traffic power supply system, relates to the micro-rail traffic technology, and is used for overcoming the defect that the power consumption requirement in the operation process of a micro-rail vehicle is difficult to meet due to the fact that the voltage drop of a sliding contact line is serious in the related technology. The micro-rail traffic power supply system comprises: the multiple sections of sliding contact lines are arranged on two sides of the interior of the track beam, and the multiple sections of sliding contact lines positioned on the same side are sequentially distributed along the extending direction of the track beam; and the power converter is electrically connected with each section of sliding contact line, is electrically connected with the high-voltage main line, and is used for converting the voltage provided by the high-voltage main line into the voltage matched with the micro-rail vehicle and supplying the voltage to the sliding contact line.)

1. A power supply system for micro-rail traffic, comprising:

the multiple sections of sliding contact lines are arranged on two sides of the interior of the track beam, and the multiple sections of sliding contact lines positioned on the same side are sequentially distributed along the extending direction of the track beam;

and the power converter is electrically connected with each section of sliding contact line, is electrically connected with the high-voltage main line, and is used for converting the voltage provided by the high-voltage main line into the voltage matched with the micro-rail vehicle and supplying the voltage to the sliding contact line.

2. The power supply system for micro-rail transit according to claim 1, wherein the power converter comprises a transformer electrically connected to two segments of trolley wires located on two sides of the rail beam and distributed oppositely.

3. The micro-rail traffic power supply system according to claim 2, wherein the transformer has a high voltage side for electrical connection to the high voltage main line through a high voltage switch.

4. The micro-rail traffic power supply system of claim 3, wherein the high voltage main line comprises an insulated three phase cable.

5. The micro-rail traffic power supply system according to claim 4, wherein the transformers electrically connected to the same side and two adjacent sections of the trolley lines are used for connecting different two phases of the high-voltage main line; and along the arrangement direction of the sliding contact lines, the phases of the transformer change according to a preset sequence.

6. The micro-rail traffic power supply system of claim 4, wherein the trolley line comprises at least three segments; and the transformers which are at the same side and correspond to every two adjacent three sections of sliding contact lines are used for connecting different three phases of the high-voltage main line.

7. The micro-rail traffic power supply system according to claim 2, wherein the transformer has a low voltage side electrically connected to the trolley line through a low voltage switch.

8. The micro-rail traffic power supply system of claim 7, wherein the low voltage side has three output terminals; one of the output terminals is grounded; the phase sequence difference of the other two output terminals is 180 degrees, and the two output terminals are respectively and electrically connected with two sections of sliding contact lines which are positioned at the two sides of the track beam and are oppositely distributed.

9. The power supply system for micro-rail traffic according to any one of claims 1 to 8, wherein the power converter is disposed in the middle of the trolley line.

10. The micro-rail traffic power supply system according to any one of claims 1 to 8, wherein a communication switch is connected between two adjacent sections of trolley lines on the same side of the rail beam; and the interconnection switch is used for conducting the two adjacent sliding contact lines when the transformer corresponding to one sliding contact line does not work.

Technical Field

The application relates to a micro-rail traffic technology, in particular to a micro-rail traffic power supply system.

Background

The micro-rail traffic system is a novel public traffic mode with light weight, low speed, medium and low traffic volume, has advantages in the aspects of humanization, environment matching, construction period, cost and the like, and can be used for tourist attractions and line branches.

The micro-rail transportation system generally includes a rail beam and a pillar supporting the rail beam, and as shown in fig. 1, a micro-rail vehicle 01 is suspended on the rail beam 02 through a running part 011. The micro-rail vehicle 01 uses electric power as a power source, so that two sides in the track beam 02 are respectively provided with a trolley line, two sides of the micro-rail vehicle walking part 011 are respectively provided with a current collector, and the current collectors are contacted with the trolley lines to receive the current. When the micro-rail traffic system is applied to places with dense pedestrian streams, such as tourist attractions, in order to ensure the safety near the micro-rail traffic system, a higher voltage still cannot be applied to the trolley line, and generally only 220V voltage can be provided for the trolley line. However, with the increase of lines and the increase of micro-rail vehicles, the voltage drop on the trolley line is severe, and the power consumption requirement during the operation of the micro-rail vehicle is difficult to meet.

Disclosure of Invention

The embodiment of the application provides a micro-rail traffic power supply system, which is used for overcoming the defect that the power consumption requirement of a micro-rail vehicle in the operation process is difficult to meet due to the fact that the voltage drop of a sliding contact line is serious in the related technology.

The embodiment of the application provides a little rail traffic power supply system includes:

the multiple sections of sliding contact lines are arranged on two sides of the interior of the track beam, and the multiple sections of sliding contact lines positioned on the same side are sequentially distributed along the extending direction of the track beam;

and the power converter is electrically connected with each section of sliding contact line, is electrically connected with the high-voltage main line, and is used for converting the voltage provided by the high-voltage main line into the voltage matched with the micro-rail vehicle and supplying the voltage to the sliding contact line.

In one possible implementation manner, the power converter includes a transformer electrically connected to two segments of trolley wires located on two sides of the track beam and distributed oppositely.

In one possible implementation, the transformer has a high-voltage side for being electrically connected to the high-voltage main line through a high-voltage switch.

In one possible implementation, the high voltage main line comprises an insulated three-phase cable.

In one possible implementation manner, a transformer electrically connected to the same side and two adjacent segments of trolley lines is used for connecting different two phases of the high-voltage main line; and along the arrangement direction of the sliding contact lines, the phases of the transformer change according to a preset sequence.

In one possible implementation, the trolley line includes at least three segments; and the transformers which are at the same side and correspond to every two adjacent three sections of sliding contact lines are used for connecting different three phases of the high-voltage main line.

In one possible implementation, the transformer has a low-voltage side electrically connected to the trolley line through a low-voltage switch.

In one of the possible implementations, the low voltage side has three output terminals; one of the output terminals is grounded; the phase sequence difference of the other two output terminals is 180 degrees, and the two output terminals are respectively and electrically connected with two sections of sliding contact lines which are positioned at the two sides of the track beam and are oppositely distributed.

In one possible implementation, the power converter is disposed in the middle of the trolley line.

In one possible implementation mode, a connection switch is connected between two adjacent sections of sliding contact lines which are positioned on the same side of the track beam; and the interconnection switch is used for conducting the two adjacent sliding contact lines when the transformer corresponding to one sliding contact line does not work.

The embodiment of the application provides a micro-rail traffic power supply system, which is characterized in that a plurality of sections of sliding contact lines and power converters are arranged, and the power converters can convert high voltage provided by a high-voltage main line into low voltage matched with micro-rail vehicles and supply the low voltage to the corresponding sliding contact lines; through setting up the wiping line into the multistage, every section wiping line obtains the electric energy from corresponding power converter respectively, does benefit to and reduces the length of single section wiping line, does benefit to and reduces the pressure drop of single section wiping line, and does benefit to and reduces the circuit consume to satisfy the electric quantity demand of little rail vehicle operation in-process. In addition, in the embodiment, the voltage of the sliding contact line does not need to be increased, the safety is high, the environment matching requirement of the micro-rail traffic system can be met, and the micro-rail traffic power supply system can be applied to places with dense people streams, such as tourist attractions.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural view of a micro-rail transportation system provided in the related art;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

fig. 3 is a block diagram of a micro-rail traffic power supply system according to an embodiment of the present disclosure;

fig. 4 is a schematic application diagram of a micro rail transit power supply system according to an embodiment of the present application;

FIG. 5 is an enlarged partial view of portion B of FIG. 4;

FIG. 6 is an enlarged partial view of portion C of FIG. 4;

fig. 7 is a schematic connection diagram of a low-voltage side of a transformer in the micro-rail traffic power supply system according to the embodiment of the present application;

fig. 8 is a schematic connection diagram of a high-voltage side of a transformer in a micro-rail traffic power supply system according to an embodiment of the present application.

Description of reference numerals:

1-trolley line;

2-a power converter; 21-a transformer; 21 a-high pressure side; 21 b-low pressure side; 22-a low voltage switch; 23-a high voltage switch;

3-a tie switch;

4-high voltage main line; 5-a track beam; 6-micro rail vehicle.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The micro-rail intelligent transportation system is a novel light, low-speed and medium-low-traffic public transportation mode, is a necessary component of an integrated, multi-mode and three-dimensional public transportation system, is in staggered development and mutual supplementation with other public transportation modes such as conventional public transportation, rail transportation and the like, has the advantages in the aspects of humanization, environment matching, construction period, cost and the like, is beneficial to supplementation and perfection of other public transportation modes, and can be used for tourist attractions and line branches.

The micro-rail transportation system generally includes a rail beam and a pillar supporting the rail beam, and as shown in fig. 1 and 2, a micro-rail vehicle 01 is suspended on the rail beam 02 through a running part 011. Since the micro-rail vehicle 01 uses electric power as a power source, two sliding contact lines 03 are respectively installed on two sides inside the rail beam 02, two current collectors 012 are respectively arranged on two sides of the micro-rail vehicle traveling part 011, and the current collectors 012 are in contact with the sliding contact lines 03 to receive the electric power. In order to ensure safety in the vicinity of the micro-rail traffic system, it is still not possible to apply a higher voltage to the trolley line, typically 220V to the trolley line. However, with the increase of lines and the increase of micro-rail vehicles, the voltage on the trolley line is reduced, and the operation requirement of the micro-rail vehicle is difficult to meet; if a higher supply voltage is provided to reduce the voltage drop, it is difficult to ensure the safety near the micro-rail traffic system, and the micro-rail traffic system cannot be applied to places with dense stream of people, such as tourist attractions.

In addition, the conventional rail vehicle power supply is mainly a high-voltage contact network power supply. The high-voltage contact net is a special form of transmission line which is erected over a railway line and supplies power to rail vehicles, and is mainly used for electric locomotives and urban rail transit. The voltage of the contact net is often higher, although it is beneficial to reduce the voltage drop of the contact net. However, when the micro-rail traffic system is used in tourist attractions and branch lines, humanization and environment matching need to be reflected, and the traditional contact network for supplying power to rail vehicles occupies a large area along the lines, so that the requirement on the environment matching of the micro-rail traffic system is difficult to meet; in addition, the power supply wires of the contact net are exposed because the electric locomotives and the running lines of urban rail transit are usually closed; in order to ensure safety and prevent electric shock accidents, the contact net needs to be sealed, and the contact net has higher requirement on sealing the line, so that the cost is higher. Therefore, the high-voltage contact network for supplying power to the traditional rail vehicle is not suitable for being arranged in places with dense pedestrian streams, such as tourist attractions and the like, and is not suitable for micro-rail traffic.

In order to overcome the above problems, that is, to meet the environment matching requirement of the micro rail traffic system and facilitate reducing the voltage drop, an embodiment of the present application provides a micro rail traffic power supply system, in which a multi-segment trolley line and a power converter are provided, and the power converter can convert the high voltage provided by the high-voltage main line into a low voltage adapted to a micro rail vehicle and supply the low voltage to the corresponding trolley line; through setting up the wiping line into the multistage, every section wiping line obtains the electric energy from corresponding power converter respectively, does benefit to and reduces the length of single section wiping line, does benefit to and reduces the pressure drop of single section wiping line, and does benefit to and reduces the circuit consume to satisfy the electric quantity demand of little rail vehicle operation in-process. In addition, in the embodiment, the voltage of the sliding contact line does not need to be increased, the safety is high, the environment matching requirement of the micro-rail traffic system can be met, and the micro-rail traffic power supply system can be applied to places with dense people streams, such as tourist attractions.

The structure, function and implementation process of the micro-rail traffic power supply system provided by this embodiment are illustrated in the following with reference to the accompanying drawings.

The micro-rail traffic power supply system provided by the embodiment, as shown in fig. 3, includes: a trolley line 1 and a power converter 2. In some examples, the micro-rail traffic power supply system may also include a high voltage main line 4

The trolley wire 1 is arranged on two sides inside the track beam 5. The trolley line 1 can be supported in the track beam 5 through an insulating layer, that is, the trolley line 1 is provided with the insulating layer supported by an insulating material between the track beams 5, so as to improve the safety of the micro-rail traffic power supply system. The insulating material can be common electrical insulating materials, such as plastic, rubber, glass, ceramic and the like; the present embodiment is not particularly limited to the insulating material.

The sliding contact lines 1 on the two sides are oppositely arranged side by side. Illustratively, the track beam 5 has a center line along the extending direction, and the trolley wires 1 on both sides can be symmetrically distributed along the center line. Each side is provided with a plurality of sections of sliding contact lines 1, and the plurality of sections of sliding contact lines 1 positioned on the same side are sequentially distributed along the extending direction of the track beam 5.

Each section of trolley line 1 is electrically connected with a power converter 2, the power converter 2 is used for being electrically connected with a high-voltage main line 4, and the power converter 2 is used for converting voltage provided by the high-voltage main line 4 into voltage matched with a micro-rail vehicle 6 and supplying the voltage to the trolley line 1. Wherein, the high-voltage line is powered by a power grid 10kV, and a power grid 10kV power supply supplies power to the high-voltage main line 4 through a high-voltage switch.

As shown in fig. 4 to 6, in a specific implementation, the power converter 2 may include a transformer 21 or other circuit structure capable of performing its function. For convenience of description, the present embodiment and the following embodiments will not be described by taking the power converter 2 as the transformer 21 as an example. It can be understood that: the implementation of the power converter 2 is not limited to this.

Exemplarily, as shown in fig. 7, two trolley wires 1 located opposite to each other on both sides of the track beam are connected to the same transformer 21. Because when one of the two sliding contact lines 1 which are relatively positioned at the two sides can not supply power for the micro-rail vehicle 6, the micro-rail vehicle 6 can not obtain electric energy at the position, therefore, the two sliding contact lines 1 which are relatively positioned at the two sides are connected to the same transformer 21, the adverse effect on the operation of the micro-rail vehicle 6 is not large, and the cost of the micro-rail traffic power supply system can be greatly reduced. The electrical connection of the transformer 21 will be exemplified by taking this as an example.

Alternatively, as shown in fig. 4 and 5, the transformer 21 has a low voltage side 21b, and the low voltage side 21b is electrically connected to the trolley wire 1 through a low voltage switch 22. The low-voltage switch 22 may be an electric control switch, which facilitates the automatic control of the connection or disconnection between the transformer 21 and the trolley line 1. For example, when maintenance and repair of the micro-rail traffic power supply system are required, the corresponding transformer 21 may be disconnected from the trolley line 1 according to actual conditions. Of course, the low-voltage switch 22 may be a manual switch, and is manually operated by a worker when the electrical connection state between the transformer 21 and the trolley wire 1 needs to be adjusted.

As shown in fig. 7, the low voltage side 21b has three output terminals; one of the output terminals is grounded, and the voltage to ground can be AC 220V; the phase sequence of the other two output terminals differs by 180 degrees and are respectively and electrically connected with the trolley lines 1 which are oppositely positioned at two sides. Therefore, the trolley lines 1 which are relatively positioned at two sides are electrically connected to the same transformer 21 together, so that the cost is reduced. In a specific implementation, the output terminal for grounding may be located between the other two output terminals.

Illustratively, the power converter 2 is disposed in the middle of the trolley line 1 to further facilitate mitigating voltage drop.

In this embodiment, each segment of the trolley line 1 can obtain electric energy from the high-voltage main line 4 relatively independently by electrically connecting the transformer 21 to each segment of the trolley line 1. Therefore, the length of each section of sliding contact line 1 is favorably set to be relatively small, and the length of each section of sliding contact line 1 can be specifically set according to actual conditions.

For example, each segment of trolley line 1 may have a length of 0.8 kilometer to 1.5 kilometers, and illustratively, each segment of trolley line 1 may have a length of 1 kilometer; therefore, the method can reduce the line voltage drop and the line loss, reduce the number of parts in the micro-rail traffic power supply system and reduce the cost. Of course, the specific length of each segment of trolley wire 1 is not limited thereto, and the embodiment is only illustrated here.

In addition, for the multiple segments of trolley wires 1 on the same side, the lengths of the multiple segments of trolley wires 1 may be equal. Alternatively, the length of one part of the trolley wire 1 is smaller than the length of the other part of the trolley wire 1, for example, for the trolley wires 1 at the end parts, the length may be slightly larger or smaller than the length of the trolley wire 1 at the middle part.

For example, the length of the single trolley wire on the same side in the related art is 10 km. By adopting the micro-rail traffic power supply system of the embodiment, the length of each section of trolley line can be 1km, 10 sections of trolley lines can be respectively arranged on each side, and the 10 sections of trolley lines are sequentially arranged along the extending direction of the rail beam, namely the advancing direction of the vehicle. In this manner, the line pressure drop can be reduced to 1/20 in the related art; the line loss is reduced by about 95%, that is, the line loss is reduced to about 5% in the related art. Therefore, the circuit can effectively reduce the voltage drop and the circuit loss, is high in safety and convenient to maintain.

Alternatively, as shown in fig. 8, the transformer 21 has a high voltage side 21a, the high voltage side 21a being adapted to be electrically connected to the high voltage main line 4 through a high voltage switch 23. The high-voltage switch 23 may be an electric control switch, which facilitates the automatic control of the connection or disconnection between the transformer 21 and the trolley line 1. For example, when maintenance and repair of the micro rail traffic power supply system are required, the corresponding transformer 21 may be disconnected from the high voltage main line 4 according to actual conditions. Of course, the high-voltage switch 23 may be a manual switch, and may be manually operated by a worker when the electrical connection state between the transformer 21 and the high-voltage main line 4 needs to be adjusted.

The high-voltage main line 4 runs above and along the track beam 5. In order to further improve the safety of the high voltage main line 4, the high voltage main line 4 comprises an insulated three-phase cable.

Exemplarily, the transformers 21 electrically connected to the same side and two adjacent segments of the trolley lines 1 are used for connecting different two phases of the high-voltage main line 4, that is, along the distribution direction of the trolley lines 1 on the same side, two adjacent transformers 21 are used for connecting different two phases of the high-voltage main line 4; and the phases of the transformer 21 are changed in a preset sequence along the direction of laying the trolley wire 1. The high-voltage main line 4 has A, B, C three phases.

For example, when the transformer 21 of one trolley wire 1 is connected to the phase B of the high-voltage wire, the transformers 21 of two adjacent trolley wires 1 on the same side as the trolley wire 1 are connected to the phase a and the phase C of the high-voltage wire, respectively. For another example, when the transformer 21 of one of the trolley wires 1 is connected to the phase a of the high-voltage wire, the transformers 21 of two adjacent trolley wires 1 on the same side as the trolley wire 1 are connected to the phase B and the phase C of the high-voltage wire, respectively. For another example, the transformer 21 of one of the trolley wires 1 is connected to the phase C of the high-voltage wire, and the transformers 21 of two adjacent trolley wires 1 on the same side as the trolley wire 1 are respectively connected to the phase a and the phase B of the high-voltage wire.

The trolley wire 1 comprises at least three sections; the transformers 21 corresponding to each adjacent three sections of the trolley lines 1 on the same side are used for connecting different three phases of the high-voltage main line 4, namely along the distribution direction of the trolley lines 1 on the same side, and the adjacent three transformers 21 are used for connecting different three phases of the high-voltage main line 4. For example, if the trolley wire 1 is provided with five sections, the first section, the second section and the third section respectively correspond to the phase a, the phase B and the phase C; the second section, the third section and the fourth section respectively correspond to a phase B, a phase C and a phase A; third, fourth, fifth C, A, B phases.

In one possible implementation manner, as shown in fig. 4 and 6, a communication switch 3 is connected between two adjacent sections of trolley lines 1 on the same side of the track beam; the interconnection switch 3 is used for conducting two adjacent sections of sliding contact lines 1 when the transformer 21 corresponding to one sliding contact line 1 does not work. The interconnection switch 3 is a low-voltage switch.

Thus, the contact switch 3 is normally in the normally open state. When the transformer 21 does not work due to the conditions of outgoing line faults of the transformer 21 with one sliding contact line 1 and the like in the two adjacent sliding contact lines 1 on the same side, the interconnection switch 3 is closed, the two sliding contact lines 1 are conducted, the adjacent sliding contact lines 1 can supply power to the sliding contact lines 1, and therefore line outage is avoided when the transformer 21 fails.

In the micro-rail traffic power supply system provided by the embodiment, by arranging the multiple sections of sliding contact lines 1 and the power converter 2, the power converter 2 can convert high voltage provided by the high-voltage main line 4 into low voltage matched with a micro-rail vehicle 6 and supply the low voltage to the corresponding sliding contact lines 1; through setting up wiping line 1 into the multistage, every section wiping line 1 obtains the electric energy from corresponding power converter 2 respectively, does benefit to and reduces the length of single section wiping line 1, does benefit to and reduces the pressure drop of single section wiping line 1, and does benefit to and reduces the circuit consume to satisfy the electric quantity demand of little rail vehicle 6 operation in-process. In addition, in the embodiment, the voltage of the trolley line 1 does not need to be increased, the safety is high, the environment matching requirement of the micro-rail traffic system can be met, and the micro-rail traffic power supply system can be applied to places with dense people streams, such as tourist attractions.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "top," "inner," and the like are used in the positional or orientational relationships indicated in the drawings for the convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Further, in the description of the present application, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.