CN112350386A - Alternating current and direct current switching identification system and alternating current and direct current switching method for double-current system vehicle - Google Patents
Alternating current and direct current switching identification system and alternating current and direct current switching method for double-current system vehicle Download PDFInfo
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Abstract
The invention discloses an alternating current and direct current switching identification system and an alternating current and direct current switching method for a double-current system vehicle, wherein an alternating current and direct current switching area track is divided into a first power supply system area, a dead zone and a second power supply system area along the advancing direction; all or part of seven identifications, namely a conversion area forenotice identification, an idle running identification, an alternating current-direct current switching identification, a dead zone forenotice identification, a dead zone identification, a second power supply area identification and a force running identification, which are capable of being observed by a driver or acquired by identification acquisition equipment on the double-current vehicle are sequentially arranged along the advancing direction of the vehicle; the switching area forecasting mark, the idle running mark, the alternating current and direct current switching mark and the dead zone forecasting mark are located in a first power supply system area, and the second power supply area mark and the force running mark are located in a second power supply system area. The driver can quickly know the position of the double-flow system vehicle through a set of marks which are distinguished from the ground beacon system, so that the driver can quickly and correctly deal with the failure of the train system and/or the ground beacon system, and the reliability and the safety are enhanced.
Description
Technical Field
The invention relates to the technical field of double-current system vehicle alternating current and direct current switching, in particular to a double-current system vehicle alternating current and direct current switching identification system, a double-current system vehicle alternating current and direct current switching system and an alternating current and direct current switching method.
Background
The double-flow system vehicle is already applied in Germany, England, Switzerland, Japan and the like, and can run on urban rail transit power supply lines with different voltage grades and different voltage systems, so that the urban rail transit system can be organically and effectively connected, zero transfer of passengers is realized as far as possible, and the trouble caused by the transfer of passengers from suburbs to urban areas is reduced.
The double-flow vehicle has two sets of high-voltage systems of different systems, namely a direct-current system and an alternating-current system. When a vehicle passes through the overhead line voltage intervals of different systems, the vehicle needs to complete high-voltage switching work (namely alternating current and direct current switching), if switching fails, alternating current appears in a direct current system when alternating current is switched to direct current, and direct current appears in the alternating current system when direct current is switched to alternating current, so that serious accidents of the high-voltage system can be caused, and reliable alternating current and direct current switching is particularly important for double-current system vehicles.
In the prior art, the tracks in the alternating current and direct current switching area are partitioned, a ground beacon is arranged in each track partition, a double-flow system vehicle triggers a vehicle system to execute different actions to complete alternating current and direct current automatic switching based on received ground beacon signals of different track partitions, although a driving platform of the double-flow system vehicle is provided with a forced button or a handle for a driver to manually and forcibly execute operations such as disconnecting a high-speed circuit breaker (direct current supply path switch), disconnecting a vacuum circuit breaker (alternating current supply path switch), switching an alternating current and direct current changeover switch (alternating current and direct current changeover switch), reducing a bow and the like so as to carry out emergency treatment when the vehicle system and/or the ground beacon system fails, because a set of track partition identification system which is convenient for observing or distinguishing the ground beacon system is not provided for the driver, the driver cannot know which track partition the current vehicle is located, therefore, when the vehicle system and/or the ground beacon system fails, a serious accident is easily caused, and the safety and reliability are low.
Disclosure of Invention
The invention aims to at least solve the technical problems in the prior art, and particularly innovatively provides a double-current system vehicle alternating current and direct current switching identification system, a double-current system vehicle alternating current and direct current switching system and an alternating current and direct current switching method.
In order to achieve the above object, according to a first aspect of the present invention, the present invention provides an ac/dc switching identification system for a dual-current system vehicle, wherein a track of an ac/dc switching area is sequentially divided into a first power supply system area, a dead area, and a second power supply system area along a traveling direction of the dual-current system vehicle; the dead zone is an overhead line non-power supply zone; when the first power supply system area is supplied with alternating current, the second power supply system area is supplied with direct current; when the first power supply system area is supplied with direct current, the second power supply system area is supplied with alternating current; all or part of seven identifications, namely a conversion area forenotice identification, an idle running identification, an alternating current-direct current switching identification, a dead zone forenotice identification, a dead zone identification, a second power supply area identification and a force running identification, which are capable of being observed by a driver or acquired by identification acquisition equipment on the double-current vehicle are sequentially arranged along the advancing direction of the vehicle; the switching area forecasting mark, the idle running mark, the alternating current and direct current switching mark and the dead zone forecasting mark are located in a first power supply system area, the dead zone mark is located in a dead zone, and the second power supply area mark and the power running mark are located in a second power supply system area.
The technical scheme is as follows: the set of marks for distinguishing the marks from the ground beacon system is arranged, the problem that a driver cannot know the current position of the vehicle due to the fact that only ground beacon marks are adopted in a traditional alternating current and direct current switching area is solved, and the driver can quickly know the position of the double-current system vehicle in the alternating current and direct current switching area through the marks so that the driver can quickly and correctly make a response when a train system and/or the ground beacon system fails, and the reliability and the safety of the alternating current and direct current switching system are enhanced.
In a preferred embodiment of the invention, all or part of the marker comprises a mark post arranged on the side of the track and a marker part, and the marker part is positioned at the upper end of the mark post.
The technical scheme is as follows: is convenient for installation and observation.
In a preferred embodiment of the present invention, the sign portion includes a sign board and/or a sign lamp array, and the pattern on the sign board is identical to the illuminated pattern of the sign lamp array.
The technical scheme is as follows: the signboard can be used daytime, and the marker lamp battle array can be used to discernment night, both the energy can be saved and the observation of being convenient for.
In a preferred embodiment of the present invention, the signboard assembly includes a signboard and an illumination lamp for illuminating the signboard.
The technical scheme is as follows: through backlight device, be convenient for night discernment sign.
In a preferred embodiment of the invention, an RFID tag module is provided on all or part of the identification.
The technical scheme is as follows: simple structure to implement the installation, the cost is lower.
In a preferred embodiment of the present invention, the inter-dead zone flag is located at a starting end of the dead zone in a traveling direction of the dual-flow vehicle; the switching zone forenotice identification, the idle running identification, the alternating current and direct current switching identification, the dead zone forenotice identification and the sequential spacing distances among the dead zone identifications are L1 m, L2 m, L3 m and L4 m, L1 is more than or equal to 80 and less than or equal to 120, L2 is more than or equal to 80 and less than or equal to 120, L3 is more than or equal to 270 and less than or equal to 310, and L4 is more than or equal to 150 and less than or equal to 190; the dead interval mark, the second power supply area mark and the force line mark are sequentially spaced at distances of L5 m and L6 m, L5 is more than or equal to 70 and less than or equal to 110, and L6 is more than or equal to 280 and less than or equal to 320.
The technical scheme is as follows: these spacing distance settings allow the driver proper operating time, improving safety.
In a preferred embodiment of the present invention, the system further includes a first ground beacon located in the first power supply system area and recognized by the train system, and a second ground beacon located in the second power supply system area and recognized by the train system.
The technical scheme is as follows: the switching between the alternating current power supply system and the direct current power supply system is conveniently and automatically carried out after the train system obtains the ground beacon signal.
In order to achieve the above object, according to a second aspect of the present invention, the present invention provides a dual-current system vehicle ac/dc switching system, including the dual-current system vehicle ac/dc switching identification system of the present invention disposed in an ac/dc switching area; the system also comprises an identification acquisition device, an identification prompt device and a train system, wherein the identification acquisition device is arranged on the double-flow system vehicle and used for acquiring identification information in the double-flow system vehicle alternating current-direct current switching identification system; and the train system identifies the first ground beacon signal and the second ground beacon signal and completes corresponding alternating current and direct current switching actions.
The technical scheme is as follows: the system realizes that the train system carries out automatic alternating current and direct current switching by depending on the first ground beacon signal and the second ground beacon signal, collects and prompts a set of identification of the distinguishing and ground beacon system through the identification collecting device and the identification prompting device, so that a driver can know the position of a double-flow system vehicle, the driver can quickly and correctly answer when the train system and/or the ground beacon system fails, and the reliability and the safety of the alternating current and direct current switching system are enhanced.
In a preferred embodiment of the present invention, the identifier acquisition device and the identifier prompt device adopt a first structure or a second structure; the first structure is as follows: the identification acquisition equipment is a camera arranged above the head of the double-flow train and used for shooting images in front of running, the identification prompt equipment is a display arranged on a driving platform, and a video input end of the display is connected with a video output end of the camera; the second structure is as follows: the identification acquisition equipment comprises an RFID card reader arranged on the vehicle head, the identification prompt equipment is a voice prompt module, and the output end of the RFID card reader is connected with the input end of the voice prompt module.
The technical scheme is as follows: the driver can visually obtain the identification information without looking at the identification information, and the problem of human eye recognition error can be avoided.
In order to achieve the above object, according to a third aspect of the present invention, there is provided a method for switching ac and dc by using the dual-current system for vehicle ac and dc switching system of the present invention, including: after the forecast identification information of the conversion area is obtained, carrying out alternating current-direct current switching forecast prompt; after receiving a first ground beacon signal, the train system gradually switches each load of the double-current system vehicle circuit structure to a standby power supply for supplying power, disconnects a vacuum circuit breaker or a high-speed circuit breaker, and switches an alternating current-direct current conversion switch from a first power supply system area gear to a second power supply system area gear; after the coasting identification information is obtained, switching the speed gear to a coasting position, judging whether each load is switched to the standby power supply for power supply by the train system, and if not, manually switching each load to the standby power supply for power supply; after acquiring alternating current and direct current switching identification information, judging whether a train system finishes a first step and a second step, wherein the first step is to disconnect a vacuum circuit breaker or a high-speed circuit breaker, the second step is to switch an alternating current and direct current change-over switch from a first power supply system zone gear to a second power supply system zone gear, if the train system does not finish the first step and/or the second step, after acquiring the forenotice identification information among dead zones, manually disconnecting the vacuum circuit breaker or the high-speed circuit breaker, and manually switching the alternating current and direct current change-over switch from the first power supply system zone gear to the second power supply system zone gear; after receiving the second ground beacon signal, the train system controls the high-speed circuit breaker or the vacuum circuit breaker to be closed, and gradually switches each load to a power supply arm for supplying power; and after the force travel identification information is acquired, prompting that the vehicle can be accelerated.
The technical scheme is as follows: the train system automatically completes alternating current and direct current switching actions according to the first ground beacon signal and the second ground beacon signal, identification information acquired by the identification acquisition equipment is prompted through the identification prompting equipment, a driver can conveniently and accurately judge whether the train system is operated in place, timely auxiliary operation is performed if the train system is not operated in place, alternating current and direct current switching can be safely and reliably completed when the ground beacon system and the train system fail, the fault tolerance rate of the train system is higher, the safety and reliability of the system are improved, the pantograph lowering frequency can be reduced, and the loss of devices is reduced.
In a preferred embodiment of the present invention, after acquiring the pre-notification identification information between dead zones, when the vacuum circuit breaker or the high-speed circuit breaker fails to be manually turned off, and/or when the ac/dc converter switch fails to be manually switched from the first power supply system range to the second power supply system range, the pantograph is manually lowered.
The technical scheme is as follows: the pantograph descending is used as a remedial measure after the manual forced operation fails, so that the safety is enhanced.
Drawings
Fig. 1 is a schematic layout diagram of an ac/dc switching identification system of a dual-flow vehicle according to an embodiment of the present invention;
FIG. 2 is a schematic layout diagram of a dual-flow vehicle AC/DC switching identification system according to another embodiment of the present invention;
FIG. 3 is a hardware block diagram of a dual-flow vehicle AC/DC switching system according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a hardware structure of a train system when a dual-current system vehicle drives from a DC power supply system area to an AC power supply system area in an embodiment of the present invention;
FIG. 5 is a schematic diagram of a hardware structure of a train system when a dual-current vehicle drives from an AC power supply system area to a DC power supply system area in an embodiment of the present invention;
fig. 6 is a control block diagram of a train system according to an embodiment of the present invention.
Reference numerals:
a conversion area forecast identification; b, identifying a lazy line; c, alternating current and direct current switching identification; d, forecasting identification among dead zones; e, marking between dead zones; f, second power supply area identification; g, force line identification; 100 a first power supply system area; 200 dead zones; 300 a second power supply system area; 1, a first power supply system power supply overhead line; 2, stringing in a dead zone; 3 a second power supply system power supply overhead line; s1 an AC-DC conversion switch; s2 battery powered transfer switch; k1 high speed circuit breaker; k2 vacuum interrupter 4 pantograph.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
The invention discloses a double-current system vehicle alternating current-direct current switching identification system, as shown in fig. 1 and fig. 2, a track of an alternating current-direct current switching area is sequentially divided into a first power supply system area 100, a dead zone 200 and a second power supply system area 300 along the advancing direction of a double-current system vehicle; the dead zone 200 is an overhead line non-power supply zone; when the first power supply system area 100 supplies ac power, the second power supply system area 300 supplies dc power; when the first power supply system area 100 supplies power for direct current, the second power supply system area 300 supplies power for alternating current; the method comprises the following steps that all or part of seven identifications, namely a conversion area forenotice identification A, an idle running identification B, an alternating current-direct current switching identification C, an inter-dead-zone forenotice identification D, an inter-dead-zone identification E, a second power supply area identification F and a force running identification G, which can be observed by a driver or acquired by identification acquisition equipment on a double-current vehicle are sequentially arranged along the advancing direction of the vehicle; the switching area forecast identification A, the idle running identification B, the alternating current-direct current switching identification C and the inter-dead-zone forecast identification D are located in the first power supply system area 100, the inter-dead-zone identification E is located in the dead zone 200, and the second power supply area identification F and the force running identification G are located in the second power supply system area 300.
In this embodiment, the identification information of the transition area announcement identifier a, the idle running identifier B, the ac/dc switching identifier C, the inter-dead-zone announcement identifier D, the inter-dead-zone identifier E, the second power supply area identifier F, and the force running identifier G is preferably, but not limited to, presented by a pattern form or an rfid ID number or different numbers of signal lights in different colors. The switching area forecasting mark A, the idle running mark B, the alternating current and direct current switching mark C, the inter-dead-zone forecasting mark D, the inter-dead-zone mark E, the second power supply area mark F and the force running mark G are preferably but not limited to be arranged on one side of the track or above the track; when the mark rod is arranged on one side of the track, the structure of the mark rod can be adopted; a road pile can also be adopted, and a structure of a radio frequency identification module is arranged on the road pile; when the mark is arranged above the track, an r-shaped road rod can be arranged on the side edge of the track, and the mark is arranged on the part of the road rod extending to the upper part of the track. In this embodiment, the switching zone announcement identifier a announces that the switching zone will enter the ac/dc switching zone, please note; the coasting mark B prompts that a double-flow vehicle needs to be driven to a coasting gear, namely a neutral gear; the alternating current-direct current switching identifier C represents that alternating current-direct current switching action is required, and can be specifically divided into a direct current switching identifier and an alternating current switching identifier so as to better accord with a switching scene; the inter-dead-zone forenotice mark D indicates that the dead zone is about to enter, and whether the alternating current and direct current switching is in place needs to be checked; a dead interval mark E represents that the dead interval mark is in a dead zone; the second power supply area identifier F represents a power supply system area after switching, and can be specifically subdivided into a direct current area identifier and an alternating current area identifier; and the force action mark G indicates that the load of the double-current system vehicle is switched to the power supply arm again to supply power, can normally operate and applies a traction pole position.
In a preferred embodiment, all or part of the marks comprise a mark post arranged on the side of the track and a mark part, and the mark part is positioned at the upper end of the mark post.
In the present embodiment, the post is preferably, but not limited to, a "1" shape or an "r" shape. The post is preferably, but not limited to, fixed to the ground by a ground angle screw or the like.
In a preferred embodiment, the sign part comprises a sign board and/or a sign lamp array, and the pattern on the sign board is consistent with the illuminated pattern of the sign lamp array.
In this embodiment, when the identification information is presented by using a pattern, the identification portion may be only a signboard, or only an identification lamp array, or include a signboard and an identification lamp array, different patterns are printed on the signboard with different identifications, and the pattern on the signboard is consistent with the pattern after the identification lamp array is lighted. The use of LEDs to form lamp array images of different shapes, colors and patterns is prior art and will not be described herein. Preferably, when the identification portion includes signboard and marker light battle array, the identification portion still includes illumination sensor and comparison start module, and the comparison start module receives the illumination intensity signal of illumination sensor output, opens the marker light battle array night, closes the marker light battle array daytime, and the illumination sensor can refer to the technical scheme that chinese patent publication is CN205755003U with the specific circuit structure of comparison start module, no longer gives details here. In a preferred embodiment, the sign portion includes a sign board and an illumination lamp illuminating the sign board.
In this embodiment, the illumination lamp may emit light toward the signboard in a tiltable manner, and preferably, an illumination lamp control module that turns on or off the illumination lamp according to the illumination intensity is provided in the illumination lamp.
In a preferred embodiment, an RFID tag module is provided on all or part of the identification.
In a preferred embodiment, as shown in fig. 1 and 2, the inter-dead zone indicator E is located at the beginning of the dead zone 200 in the direction of travel of the dual-flow vehicle;
transition zone forenotice identification A, idle line identification B, alternating current-direct current switching identification C, inter-dead zone forenotice identification D and inter-dead zone identification E are sequentially spaced at distances of L1 m, L2 m, L3 m and L4 m, L1 is more than or equal to 80 and less than or equal to 120, L2 is more than or equal to 80 and less than or equal to 120, L3 is more than or equal to 270 and less than or equal to 310, and L4 is more than or equal to 150 and less than or equal to 190;
the distance L5 m and the distance L6 m are sequentially arranged among the dead zone mark E, the second power supply zone mark F and the force line mark G, L5 is more than or equal to 70 and less than or equal to 110, and L6 is more than or equal to 280 and less than or equal to 320.
In the present embodiment, L1 is preferably 100 meters, L2 is preferably 100 meters, L3 is preferably 290 meters, L4 is preferably 170 meters, L5 is preferably 90 meters, and L6 is preferably 300 meters.
In a preferred embodiment, the system further includes a first ground beacon located in the first power supply system area 100 and recognized by the train system, and a second ground beacon located in the second power supply system area 300 and recognized by the train system.
The invention also discloses a double-current system vehicle alternating current and direct current switching system, a hardware block diagram of which is shown in fig. 3, and the system comprises the double-current system vehicle alternating current and direct current switching identifier C system arranged in an alternating current and direct current switching area; the system also comprises an identification acquisition device, an identification prompt device and a train system, wherein the identification acquisition device is arranged on the double-flow system vehicle and used for acquiring identification information in the double-flow system vehicle alternating current-direct current switching identification C system; and the train system identifies the first ground beacon signal and the second ground beacon signal and completes corresponding alternating current and direct current switching actions.
In this embodiment, the identifier acquisition device and the identifier prompt device adopt a first structure or a second structure;
the first structure is as follows: the mark collection equipment is for locating the camera that double-flow system train locomotive top was used for shooing the place ahead image that traveles, and the display of sign suggestion equipment for locating the driver's cabin, the video input of display and the video output of camera are connected, and present product can all be selected for use to display and camera.
The second structure is as follows: the identification acquisition equipment comprises an RFID card reader arranged on the vehicle head, the identification prompt equipment is a voice prompt module, and the output end of the RFID card reader is connected with the input end of the voice prompt module. The RFID card reader and the voice prompt module can both select the existing products.
In the present embodiment, as shown in fig. 4 to 6, the train system includes a control system, a pantograph 4, an ac/dc converter switch S1, a high-speed circuit breaker K1, a vacuum circuit breaker K2, a transformer, a traction four-quadrant converter, an inverter, a standby battery power supply module, a battery power supply converter switch S2, and a pantograph lifting power system, wherein an input terminal of the transformer is connected to one end of the vacuum circuit breaker K2, an output terminal of the transformer is connected to an input terminal of the traction four-quadrant converter, an output terminal of the traction four-quadrant converter is connected to an input terminal of the inverter, and an input terminal of the inverter is further connected to one end of the high-speed circuit breaker K36. As shown in fig. 6, the control system controls on and off of the ac/dc converter switch S1, the high-speed circuit breaker K1, and the vacuum circuit breaker K2, and the train system is further provided with 4 buttons or handles for controlling on and off of the ac/dc converter switch S1, the high-speed circuit breaker K1, the vacuum circuit breaker K2, and the battery power supply converter switch S2, respectively. The train system further includes a ground beacon detection module, and the ground signal detection module may be an existing product, for example, refer to the content disclosed in chinese patent with publication number CN108790956A, which is not described herein again. The backup battery power supply module inverts the direct current of the backup battery into three-phase alternating current which can be used by a load, and the existing product can be adopted. The load is preferably, but not limited to, an air conditioner, a heating device, a lighting system, and the like. The high-speed circuit breaker K1 and the vacuum circuit breaker K2 are interlocked and disconnected, and when the high-speed circuit breaker K1 is disconnected, the vacuum circuit breaker K2 is closed; when the high speed breaker K1 is closed, the vacuum breaker K2 is opened.
The invention also discloses an alternating current and direct current switching method by utilizing the double-current system vehicle alternating current and direct current switching system, which comprises the following steps:
after acquiring the information of the forenotice identification A of the switching area, carrying out AC/DC switching forenotice prompt;
after receiving the first ground beacon signal, the train system gradually switches each load of the double-current system vehicle circuit structure to the standby power supply for supplying power, disconnects a vacuum circuit breaker K2 or a high-speed circuit breaker K1, and switches an alternating current-direct current conversion switch S1 from a first power supply system area 100 gear to a second power supply system area 300 gear;
after obtaining the information of the coasting identification B, switching the speed gear to a coasting position, judging whether each load is switched to the standby power supply for power supply by the train system, and if not, manually switching each load to the standby power supply for power supply;
after the information of the alternating current-direct current switching identifier C is obtained, whether the train system finishes a first step and a second step is judged, the first step is to disconnect a vacuum circuit breaker K2 or a high-speed circuit breaker K1, the second step is to switch an alternating current-direct current change-over switch S1 from a first power supply system area 100 gear to a second power supply system area 300 gear, if the train system does not finish the first step and/or the second step, after the information of the pre-notice identifier D between the dead zones is obtained, the vacuum circuit breaker K2 or the high-speed circuit breaker K1 is manually disconnected, and the alternating current-direct current change-over switch S1 is manually switched from the first power supply system area 100 gear to the second power supply system area;
after receiving the second ground beacon 2# signal, the train system controls the high-speed circuit breaker K1 or the vacuum circuit breaker K2 to be closed, and gradually switches each load to a power supply arm for supplying power;
and after the information of the driving force identification G is acquired, prompting that accelerated driving can be performed.
In this embodiment, the identification information of the transition area advance notice identifier a, the idle running identifier B, the ac/dc switching identifier C, the inter-dead-zone advance notice identifier D, the inter-dead-zone identifier E, the second power supply area identifier F, and the power running identifier G may be obtained through observation by human eyes of a driver or through an identifier acquisition device and an identifier prompt device.
In an application scenario of the method, a dual-current system vehicle drives from a dc power supply area to an ac power supply area, that is, the first power supply system area 100 is a dc power supply area, the first power supply system power supply overhead line 1 is a dc power, the second power supply system area 300 is an ac power supply area, and the second power supply system power supply overhead line 3 is an ac power. As shown in fig. 4, the pantograph 4 is initially in contact with the first power supply system power supply trolley wire 1, and the respective switching states are as shown in fig. 4.
In the present application scenario, after the train system receives the first ground beacon signal, the control system controls the high-speed circuit breaker K1 to open, the vacuum circuit breaker K2 to close, and the ac/dc converter switch S1 to switch from the terminal 2 to the terminal 1, and the battery-powered converter switch S2 to switch from the terminal 1 to the terminal 2.
In another application scenario of the method, a dual-current system vehicle drives from an ac power supply area to a dc power supply area, that is, the first power supply system area 100 is an ac power supply area, the first power supply system power supply overhead line 1 is an ac power, the second power supply system area 300 is a dc power supply area, and the second power supply system power supply overhead line 3 is a dc power. As shown in fig. 4, the pantograph 4 is initially in contact with the first power supply system power supply trolley wire 1, and the respective switching states are as shown in fig. 5.
In the application scenario, after the train system receives the first ground beacon signal, the control system controls the high-speed circuit breaker K1 to be closed, the vacuum circuit breaker K2 to be opened, and the ac/dc conversion switch S1 to be switched from the terminal 1 to the terminal 2, and the battery power supply conversion switch S2 is switched from the terminal 1 to the terminal 2. In a preferred embodiment, after the information of the inter-dead-zone forenotice identifier D is acquired, when the vacuum circuit breaker K2 or the high-speed circuit breaker K1 fails to be manually opened and/or when the ac/dc converter switch S1 fails to be manually switched from the first power supply system zone 100 to the second power supply system zone 300, the pantograph 4 is manually lowered.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A double-current system vehicle alternating current-direct current switching identification system is characterized in that a track of an alternating current-direct current switching area is sequentially divided into a first power supply system area, a dead zone and a second power supply system area along the advancing direction of a double-current system vehicle;
the dead zone is an overhead line non-power supply zone;
when the first power supply system area is supplied with alternating current, the second power supply system area is supplied with direct current;
when the first power supply system area is supplied with direct current, the second power supply system area is supplied with alternating current;
all or part of seven identifications, namely a conversion area forenotice identification, an idle running identification, an alternating current-direct current switching identification, a dead zone forenotice identification, a dead zone identification, a second power supply area identification and a force running identification, which are capable of being observed by a driver or acquired by identification acquisition equipment on the double-current vehicle are sequentially arranged along the advancing direction of the vehicle;
the switching area forecasting mark, the idle running mark, the alternating current and direct current switching mark and the dead zone forecasting mark are located in a first power supply system area, the dead zone mark is located in a dead zone, and the second power supply area mark and the power running mark are located in a second power supply system area.
2. The dual-flow vehicle alternating current-direct current switching identification system as claimed in claim 1, wherein all or part of the identification comprises a mark post and an identification part, the mark post is arranged on the side edge of a track, and the identification part is arranged at the upper end of the mark post.
3. The dual-flow vehicle alternating current-direct current switching identification system as claimed in claim 2, wherein the identification part comprises an identification plate and/or an identification lamp array, and the pattern on the identification plate is consistent with the pattern after the identification lamp array is lighted.
4. The dual flow vehicle ac to dc switching sign system of claim 2, wherein the sign portion comprises a sign board and a light for photographing the sign board.
5. The dual-flow vehicle ac/dc switching identification system of claim 1, wherein all or part of the identification is provided with an RFID tag module.
6. The dual-flow vehicle ac-dc switching identification system of claim 1, wherein the dead zone identification is located at a starting end of the dead zone in a traveling direction of the dual-flow vehicle;
the switching zone forenotice identification, the idle running identification, the alternating current and direct current switching identification, the dead zone forenotice identification and the sequential spacing distances among the dead zone identifications are L1 m, L2 m, L3 m and L4 m, L1 is more than or equal to 80 and less than or equal to 120, L2 is more than or equal to 80 and less than or equal to 120, L3 is more than or equal to 270 and less than or equal to 310, and L4 is more than or equal to 150 and less than or equal to 190;
the dead interval mark, the second power supply area mark and the force line mark are sequentially spaced at distances of L5 m and L6 m, L5 is more than or equal to 70 and less than or equal to 110, and L6 is more than or equal to 280 and less than or equal to 320.
7. The dual-system vehicle ac/dc switching identification system according to any of claims 1-6, further comprising a first ground beacon located in the first power supply system area and recognized by the train system, and a second ground beacon located in the second power supply system area and recognized by the train system.
8. A dual-system vehicle AC/DC switching system, characterized by comprising the dual-system vehicle AC/DC switching identification system of claim 7 arranged in an AC/DC switching area;
the system further comprises an identification acquisition device, an identification prompt device and a train system, wherein the identification acquisition device is arranged on the double-flow system vehicle and used for acquiring identification information in the double-flow system vehicle alternating current-direct current switching identification system according to claim 7, and the output end of the identification acquisition device is connected with the input end of the identification prompt device; and the train system identifies the first ground beacon signal and the second ground beacon signal and completes corresponding alternating current and direct current switching actions.
9. A method for switching ac and dc by using the dual-current system ac/dc switching system of claim 8, comprising:
after the forecast identification information of the conversion area is obtained, carrying out alternating current-direct current switching forecast prompt;
after receiving a first ground beacon signal, the train system gradually switches each load of the double-current system vehicle circuit structure to a standby power supply for supplying power, disconnects a vacuum circuit breaker or a high-speed circuit breaker, and switches an alternating current-direct current conversion switch from a first power supply system area gear to a second power supply system area gear;
after the coasting identification information is obtained, switching the speed gear to a coasting position, judging whether each load is switched to the standby power supply for power supply by the train system, and if not, manually switching each load to the standby power supply for power supply;
after acquiring alternating current and direct current switching identification information, judging whether a train system finishes a first step and a second step, wherein the first step is to disconnect a vacuum circuit breaker or a high-speed circuit breaker, the second step is to switch an alternating current and direct current change-over switch from a first power supply system zone gear to a second power supply system zone gear, if the train system does not finish the first step and/or the second step, after acquiring the forenotice identification information among dead zones, manually disconnecting the vacuum circuit breaker or the high-speed circuit breaker, and manually switching the alternating current and direct current change-over switch from the first power supply system zone gear to the second power supply system zone gear;
after receiving the second ground beacon signal, the train system controls the high-speed circuit breaker or the vacuum circuit breaker to be closed, and gradually switches each load to a power supply arm for supplying power;
and after the force travel identification information is acquired, prompting that the vehicle can be accelerated.
10. The ac/dc switching method according to claim 9, wherein after acquiring the pre-notice identification information between the dead zones, when the vacuum circuit breaker or the high-speed circuit breaker fails to be manually turned off, and/or when the ac/dc converter switch fails to be manually switched from the first power supply system range to the second power supply system range, the pantograph is manually lowered.
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| CN202011289467.4A CN112350386A (en) | 2020-11-17 | 2020-11-17 | Alternating current and direct current switching identification system and alternating current and direct current switching method for double-current system vehicle |
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| CN202011289467.4A CN112350386A (en) | 2020-11-17 | 2020-11-17 | Alternating current and direct current switching identification system and alternating current and direct current switching method for double-current system vehicle |
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| CN113173110B (en) * | 2021-04-23 | 2023-02-17 | 重庆中车长客轨道车辆有限公司 | Double-flow system vehicle non-electric area switching failure emergency system |
| CN114137957A (en) * | 2021-10-28 | 2022-03-04 | 通号城市轨道交通技术有限公司 | ATO vehicle control method and device based on alternating current-direct current and alternating current-alternating current passing neutral section |
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