Passing neutral section system and passing neutral section method suitable for bilateral power supply mode electric segmentation and neutral section conversion

Abstract

The invention discloses a neutral section passing system and method suitable for bilateral power supply mode electric section and neutral section conversion. The system comprises a first traction substation, a second traction substation, a first power supply arm, a second power supply arm, a first electric section, a section post and a ground automatic neutral section passing device. The partition station is used for enabling the first electric section to be electrified by closing a circuit breaker in a bilateral power supply mode, and is used for converting the first electric section into a first electric split phase by opening the circuit breaker when the bilateral power supply mode is split into a unilateral power supply mode; and the ground automatic neutral section passing device is used for conducting the first electronic switch group before the train drives into the first electric neutral section to enable the first power supply arm to supply power to a contact network of the first electric neutral section, and turning off the first electronic switch group after the train passes through the first electric neutral section to enable the train to finish electrified neutral section passing. According to the method, the technical effect that the train passes through the electric segmentation / electric phase splitting in a non-perception automatic electrified mode in the bilateral / unilateral power supply mode conversion state is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of bilateral power supply for AC electrified railways, and in particular to a phase-splitting system and method adapted for electrical segmentation and phase conversion in a bilateral power supply mode. Background Art

[0002] Currently, AC electrified railways generally utilize a single-sided power supply system. To reduce the negative-sequence current generated by traction loads in the power system, different supply arms rotate their phase sequence for power supply. Accordingly, to achieve electrical isolation between the different supply arms, phase separation is required at the exit of the traction substation and at the end of the supply arm. Since the catenary of a phase separation is de-energized, if a train's pantograph carries current from the supply arm and enters the de-energized area of the phase separation, severe arcing, catenary erosion, and even severe line breakage can occur. Therefore, existing trains typically use a de-energized phase separation method, relying on inertia to glide through the de-energized area, resulting in speed loss. For heavily loaded electrified railways located on long and steep slopes, trains experience significant speed loss when passing through phase separation, potentially leading to accidents such as "slope stopping," seriously compromising operational safety. Furthermore, some lines face challenges such as difficulty in phase separation, weak external power supplies, and insufficient power system capacity. In these situations, a dual-sided power supply system offers a promising solution. The traction network in difficult sections is powered simultaneously by two adjacent traction substations. This not only eliminates phase separation at the end of the power supply arm, but also improves the power supply capacity of the traction power supply system and enhances train operation reliability. Domestically, exploration of the application of bilateral power supply technology on some special lines has begun.

[0003] For bilateral power supply, electrical segments are required between different power supply arms to divide the power supply units. This improves power supply flexibility while effectively reducing the impact of faulty sections. Under normal operating conditions, trains can pass through the electrical segments without any operation and without power interruption. However, if a power grid system failure or other special circumstances occur, the traction power supply system needs to be decoupled from bilateral power supply to traditional unilateral power supply. In this case, the electrical segments need to be converted to phase separation. If the train or the ground fails to take appropriate measures in a timely manner, the train may experience a phase separation accident, seriously affecting driving safety.

[0004] How to propose a phase-shifting scheme for the conversion of electrical segmentation and electrical phase separation that is suitable for the bilateral power supply mode, so as to realize the automatic and unconscious passage of the train through the electrical segmentation / electrical phase separation under the bilateral / unilateral power supply mode conversion state, is a technical problem that needs to be solved by the existing technology. Summary of the Invention

[0005] In order to solve at least one technical problem in the above-mentioned background technology, the present invention proposes a phase-splitting system and method that adapts to the electrical segmentation and phase conversion of the bilateral power supply mode.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided a phase-over system that is adaptable to the electric segmentation and phase conversion of the bilateral power supply mode, the system comprising: a first traction substation, a second traction substation, a first power supply arm, a second power supply arm, a first electric segment, a sub-station and a ground automatic phase-over device; the first power supply arm is connected to the first traction substation, the second power supply arm is connected to the second traction substation, the first electric segment is between the first power supply arm and the second power supply arm; the sub-station is connected to the first power supply arm and the second power supply arm, and is used to energize the first electric segment by closing the circuit breaker in the bilateral power supply mode, and is used to energize the first electric segment in the case of decoupling the bilateral power supply mode to the unilateral power supply mode. In this mode, the first electrical segment is converted to the first electrical phase by disconnecting the circuit breaker; the ground automatic phase-passing device includes: a first electronic switch group; the first end of the first electronic switch group is connected to the first power supply arm, and the second end of the first electronic switch group is connected to the contact network of the electrical segment; the ground automatic phase-passing device is used to turn on the first electronic switch group after the first electrical segment is converted to the first electrical phase and before the train enters the first electrical phase, so that the first power supply arm supplies power to the contact network of the first electrical phase, and when the train passes through the first electrical phase, turn off the first electronic switch group to restore the contact network of the first electrical phase to a non-energized state, and the train completes the energized phase-passing.

[0007] Optionally, the partition includes: a first circuit breaker, a second circuit breaker, a third circuit breaker and a fourth circuit breaker; the first end of the first circuit breaker is connected to the first power supply arm, the first end of the second circuit breaker is connected to the second power supply arm, the first end of the third circuit breaker is connected to the first electrical segment, the second ends of the first circuit breaker and the third circuit breaker are connected to the first end of the fourth circuit breaker, and the second end of the second circuit breaker is connected to the second end of the fourth circuit breaker; in the bilateral power supply mode, the first circuit breaker, the second circuit breaker, the third circuit breaker and the fourth circuit breaker are all closed, at this time the first power supply arm and the second power supply arm are connected, and the contact network of the first electrical segment is energized; when the bilateral power supply mode is decoupled from the unilateral power supply mode, the third circuit breaker and the fourth circuit breaker are disconnected, at this time the contact network of the first electrical segment is not energized, and the first electrical segment is converted to the first electrical phase.

[0008] Optionally, the ground automatic phase-over device also includes: a second electronic switch group; the first end of the second electronic switch group is connected to the second power supply arm, the second end of the second electronic switch group is connected to the second end of the first electronic switch group and is connected to the contact network of the first electrical segment; the ground automatic phase-over device is also used to turn on the first electronic switch group after the first electrical segment is converted to the first electrical phase and before the train enters the first electrical phase from the direction of the first power supply arm, so that the first power supply arm supplies power to the contact network of the first electrical phase; when the train reaches the middle position of the contact network of the first electrical phase, turn off the first electronic switch group, turn on the second electronic switch group, so that the second power supply arm supplies power to the contact network of the first electrical phase; after the train passes the first electrical phase, turn off the second electronic switch group, so that the contact network of the first electrical phase is restored to a non-energized state, and the train completes the energized phase-over.

[0009] Optionally, the over-phase system that adapts to the electrical segmentation and phase conversion in the bilateral power supply mode also includes: a third power supply arm, a fourth power supply arm and a second electrical segment; the first power supply arm, the second power supply arm and the first electrical segment correspond to the first rail, and the third power supply arm, the fourth power supply arm and the second electrical segment correspond to the second rail; the third power supply arm is connected to the first traction substation, the fourth power supply arm is connected to the second traction substation, and the second electrical segment is between the third power supply arm and the fourth power supply arm; the substation is connected to the third power supply arm and the fourth power supply arm, and is also used to energize the second electrical segment by closing the circuit breaker in the bilateral power supply mode, and to convert the second electrical segment into the second electrical phase by opening the circuit breaker when the bilateral power supply mode is decoupled from the unilateral power supply mode; the ground automatic over-phase device also includes: a third electronic switch group and a fourth electronic switch group; the third electronic switch The first end of the switch group is connected to the third power supply arm, the first end of the fourth electronic switch group is connected to the fourth power supply arm, the second ends of the third electronic switch group and the fourth electronic switch group are connected and connected to the contact network of the second electrical segment; the ground automatic phase-passing device is also used to turn on the third electronic switch group after the second electrical segment is converted to the second electrical phase and before the train on the second rail enters the second electrical phase from the direction of the third power supply arm, so that the third power supply arm supplies power to the contact network of the second electrical phase; when the train reaches the middle position of the contact network of the second electrical phase, the third electronic switch group is turned off and the fourth electronic switch group is turned on, so that the fourth power supply arm supplies power to the contact network of the second electrical phase; after the train passes the second electrical phase, the fourth electronic switch group is turned off to restore the contact network of the second electrical phase to a non-energized state, and the train completes the energized phase-passing.

[0010] Optionally, the sub-station also includes: a fifth circuit breaker, a sixth circuit breaker and a seventh circuit breaker; the first end of the fifth circuit breaker is connected to the third power supply arm, the first end of the sixth circuit breaker is connected to the fourth power supply arm, the first end of the seventh circuit breaker is connected to the second electrical segment, the second end of the fifth circuit breaker is connected to the first end of the fourth circuit breaker, and the second ends of the sixth circuit breaker and the seventh circuit breaker are connected to the second end of the fourth circuit breaker; in the bilateral power supply mode, the first circuit breaker, the second circuit breaker, the third circuit breaker, the fourth circuit breaker, the fifth circuit breaker, the sixth circuit breaker and the seventh circuit breaker are all closed, and the contact networks of the first electrical segment and the second electrical segment are energized; when the bilateral power supply mode is decoupled from the unilateral power supply mode, the seventh circuit breaker, the third circuit breaker and the fourth circuit breaker are disconnected, and the contact networks of the first electrical segment and the second electrical segment are not energized, the first electrical segment is converted to the first electrical phase, and the second electrical segment is converted to the second electrical phase.

[0011] Optionally, the first electronic switch group, the second electronic switch group, the third electronic switch group and the fourth electronic switch group are vacuum circuit breakers or high-voltage thyristor valve groups.

[0012] Optionally, the ground automatic phase-splitting device is a ground automatic phase-splitting device based on a mechanical switch, a ground automatic phase-splitting device based on an electronic switch, or a ground automatic phase-splitting device based on a power electronic converter.

[0013] To achieve the above object, according to another aspect of the present invention, a phase-splitting method for converting between electrical segmentation and phase separation in a bilateral power supply mode is provided. The method comprises:

[0014] When the double-side power supply mode is switched to the single-side power supply mode, the first electrical segment is switched to the first electrical phase by disconnecting the circuit breaker in the substation;

[0015] Before the train enters the first electrical phase, the first electronic switch group is turned on so that the first power supply arm supplies power to the contact network of the first electrical phase; after the train passes through the first electrical phase, the first electronic switch group is turned off so that the contact network of the first electrical phase is restored to a non-energized state, and the train completes the energized phase passing.

[0016] To achieve the above object, according to another aspect of the present invention, another phase-splitting method for converting between electrical segmentation and phase separation in a bilateral power supply mode is provided. The method comprises:

[0017] When the double-side power supply mode is switched to the single-side power supply mode, the first electrical segment is switched to the first electrical phase by disconnecting the circuit breaker in the substation;

[0018] Before the train enters the first electrical phase from the direction of the first power supply arm, the first electronic switch group is turned on so that the first power supply arm supplies power to the contact network of the first electrical phase. When the train reaches the middle position of the contact network of the first electrical phase, the first electronic switch group is turned off and the second electronic switch group is turned on so that the second power supply arm supplies power to the contact network of the first electrical phase. After the train passes the first electrical phase, the second electronic switch group is turned off so that the contact network of the first electrical phase is restored to a non-energized state, and the train completes the energized phase crossing.

[0019] To achieve the above object, according to another aspect of the present invention, another phase-splitting method for converting between electrical segmentation and phase separation in a bilateral power supply mode is provided. The method comprises:

[0020] When the double-sided power supply mode is switched to the single-sided power supply mode, the first electrical segment is switched to the first electrical phase and the second electrical segment is switched to the second electrical phase by disconnecting the circuit breaker in the substation;

[0021] Before the train on the first rail travels from the first power supply arm into the first electrical phase, the first electronic switch group is turned on so that the first power supply arm supplies power to the contact network of the first electrical phase; when the train reaches the middle position of the contact network of the first electrical phase, the first electronic switch group is turned off and the second electronic switch group is turned on so that the second power supply arm supplies power to the contact network of the first electrical phase; after the train passes the first electrical phase, the second electronic switch group is turned off so that the contact network of the first electrical phase is restored to a non-energized state, and the train completes the energized phase crossing;

[0022] Before the train on the second rail travels from the direction of the third power supply arm into the second electrical phase, the third electronic switch group is turned on so that the third power supply arm supplies power to the contact network of the second electrical phase. When the train reaches the middle position of the contact network of the second electrical phase, the third electronic switch group is turned off and the fourth electronic switch group is turned on so that the fourth power supply arm supplies power to the contact network of the second electrical phase. After the train passes the second electrical phase, the fourth electronic switch group is turned off so that the contact network of the second electrical phase is restored to a non-energized state, and the train completes the energized phase crossing.

[0023] To achieve the above object, according to another aspect of the present invention, there is provided a phase-splitting device adapted for electrical segmentation and phase conversion in a bilateral power supply mode, the device comprising:

[0024] A first power supply mode switching processing unit is configured to, when the bilateral power supply mode is switched to the unilateral power supply mode, switch the first electrical segment to the first electrical phase by disconnecting the circuit breaker in the substation;

[0025] The first energized phase-over processing unit is used to turn on the first electronic switch group before the train enters the first phase, so that the first power supply arm supplies power to the contact network of the first phase; after the train passes through the first phase, the first electronic switch group is turned off to restore the contact network of the first phase to a non-energized state, and the train completes the energized phase-over.

[0026] To achieve the above object, according to another aspect of the present invention, there is provided another phase-splitting device adapted for electrical segmentation and phase conversion in a bilateral power supply mode, the device comprising:

[0027] A second power supply mode switching processing unit is configured to, when the bilateral power supply mode is switched to the unilateral power supply mode, switch the first electrical segment to the first electrical phase by disconnecting the circuit breaker in the substation;

[0028] The second energized over-phase processing unit is used to turn on the first electronic switch group before the train enters the first electrical phase from the direction of the first power supply arm, so that the first power supply arm supplies power to the contact network of the first electrical phase; when the train reaches the middle position of the contact network of the first electrical phase, turn off the first electronic switch group, turn on the second electronic switch group, so that the second power supply arm supplies power to the contact network of the first electrical phase; after the train passes the first electrical phase, turn off the second electronic switch group, so that the contact network of the first electrical phase is restored to a non-energized state, and the train completes the energized over-phase.

[0029] To achieve the above object, according to another aspect of the present invention, there is provided another phase-splitting device adapted for electrical segmentation and phase conversion in a bilateral power supply mode, the device comprising:

[0030] a third power supply mode switching processing unit, configured to, when the bilateral power supply mode is switched to the unilateral power supply mode, switch the first electrical segment to the first electrical phase and the second electrical segment to the second electrical phase by disconnecting the circuit breaker in the substation;

[0031] a third energized over-phase processing unit, configured to, before the train located on the first rail travels from the first power supply arm into the first power phase, turn on the first electronic switch group, so that the first power supply arm supplies power to the contact network of the first power phase; when the train reaches the middle position of the contact network of the first power phase, turn off the first electronic switch group, turn on the second electronic switch group, so that the second power supply arm supplies power to the contact network of the first power phase; after the train passes the first power phase, turn off the second electronic switch group, so that the contact network of the first power phase is restored to a non-energized state, and the train completes the energized over-phase;

[0032] The fourth energized over-phase processing unit is used to turn on the third electronic switch group before the train located on the second rail travels from the direction of the third power supply arm into the second power phase, so that the third power supply arm supplies power to the contact network of the second power phase; when the train reaches the middle position of the contact network of the second power phase, the third electronic switch group is turned off, and the fourth electronic switch group is turned on, so that the fourth power supply arm supplies power to the contact network of the second power phase; after the train passes the second power phase, the fourth electronic switch group is turned off, so that the contact network of the second power phase is restored to a non-energized state, and the train completes the energized over-phase.

[0033] In order to achieve the above-mentioned purpose, according to another aspect of the present invention, a computer device is also provided, including a memory, a processor and a computer program stored in the memory and capable of running on the processor, and when the processor executes the computer program, the steps of the above-mentioned over-phase method for electrical segmentation and phase conversion that adapts to the bilateral power supply mode are implemented.

[0034] In order to achieve the above-mentioned purpose, according to another aspect of the present invention, a computer-readable storage medium is further provided, on which a computer program / instruction is stored. When the computer program / instruction is executed by a processor, the steps of the above-mentioned over-phase method for electrical segmentation and phase conversion that adapts to the bilateral power supply mode are implemented.

[0035] In order to achieve the above-mentioned purpose, according to another aspect of the present invention, a computer program product is also provided, including a computer program / instruction, which, when executed by a processor, implements the steps of the above-mentioned over-phase method for electrical segmentation and phase conversion adapted to the bilateral power supply mode.

[0036] The beneficial effects of the present invention are:

[0037] The present invention is combined with a ground automatic over-phase device, so that the train can perform live over-segmentation in a bilateral power supply mode, and perform live over-phase separation after the bilateral power supply mode is decoupled from the unilateral power supply mode. There is no need to adjust the train operation control system and there is no need to increase the communication between the ground traction power supply system and the train. The train can automatically pass through the electrical segmentation / electrical phase separation without any perception without any operation, which effectively solves the problem of train over-segmentation / phase separation in the dual / unilateral power supply mode conversion state. The method is simple and has high reliability, can ensure the safe operation of the train and improve the reliability of the traction power supply system. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0039] Figure 1 This is a first schematic diagram of a phase-splitting system adapted to the electrical segmentation and phase conversion of a bilateral power supply mode according to the present invention;

[0040] Figure 2 This is a second schematic diagram of the over-phase system of the present invention that is adapted to the electrical segmentation and phase conversion of the bilateral power supply mode;

[0041] Figure 3 This is a third schematic diagram of the over-phase system of the present invention that is adapted to the electrical segmentation and phase conversion of the bilateral power supply mode;

[0042] Figure 4 This is the first flow chart of the phase-splitting method for converting electrical segmentation and phase separation in a bilateral power supply mode according to the present invention;

[0043] Figure 5 This is the second flow chart of the over-phase method for converting electrical segmentation and phase separation in a bilateral power supply mode according to the present invention;

[0044] Figure 6 This is the third flow chart of the phase-splitting method for converting electrical segmentation and phase separation in a bilateral power supply mode according to the present invention;

[0045] Figure 7 This is the first structural block diagram of the phase-splitting device of the present invention that is suitable for electrical segmentation and phase conversion in a bilateral power supply mode;

[0046] Figure 8 This is a second structural block diagram of the phase-splitting device of the present invention that is suitable for electrical segmentation and phase conversion in a bilateral power supply mode;

[0047] Figure 9 This is the third structural block diagram of the phase-splitting device of the present invention that is suitable for electrical segmentation and phase conversion in a bilateral power supply mode;

[0048] Figure 10 Schematic diagram of a computer device according to an embodiment of the present invention.

[0049] Explanation of symbols:

[0050] 1. First traction substation; 2. Second traction substation; 3. First power supply arm; 4. Second power supply arm; 5. First rail; 6. Train; 7. First electrical section; 8. First circuit breaker; 9. Second circuit breaker; 10. Third circuit breaker; 11. Fourth circuit breaker; 12. Substation; 13. First electronic switch group; 14. Second electronic switch group; 15. Ground automatic phase-shifting device; 16. Third power supply arm; 17. Fourth power supply arm; 18. Second rail; 19. Second electrical section; 20. Fifth circuit breaker; 21. Sixth circuit breaker; 22. Seventh circuit breaker; 23. Third electronic switch group; 24. Fourth electronic switch group. DETAILED DESCRIPTION

[0051] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0052] It will be understood by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0053] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products or apparatuses.

[0054] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0055] The technical problem to be solved by the present invention is to propose a train passing phase scheme that is adaptable to the working conditions of electrical segmentation and electrical phase separation conversion. The train performs live segmentation under normal bilateral power supply mode. After the bilateral power supply mode is decoupled from the unilateral power supply mode, it performs live phase separation in combination with the ground automatic passing phase device, so as to realize the automatic and energized passing of the train through the electrical segmentation / electrical phase separation without perception in the state of bilateral / unilateral power supply mode conversion, effectively avoiding accidents such as phase separation and slope parking, and improving the reliability of the traction power supply system.

[0056] The present invention is described in detail below with reference to a number of embodiments.

[0057] Example 1

[0058] In this embodiment, the present invention provides a phase-splitting system that adapts to the electrical segmentation and phase conversion of the bilateral power supply mode, such as Figure 1 As shown, it includes: a first traction substation 1, a second traction substation 2, a first power supply arm 3, a second power supply arm 4, a first electrical segment 7, a substation 12 and a ground automatic phase-splitting device 15.

[0059] The first power supply arm 3 is connected to the first traction substation 1 , the second power supply arm 4 is connected to the second traction substation 2 , and the first electrical segment 7 is between the first power supply arm 3 and the second power supply arm 4 .

[0060] The substation 12 is connected to the first power supply arm 3 and the second power supply arm 4, and is used to energize the first electrical segment 7 by closing the circuit breaker under the bilateral power supply mode, and to convert the first electrical segment 7 into the first electrical phase by opening the circuit breaker when the bilateral power supply mode is decoupled to the unilateral power supply mode.

[0061] Specifically, the substation 12 includes: a first circuit breaker 8, a second circuit breaker 9, a third circuit breaker 10 and a fourth circuit breaker 11. The first end of the first circuit breaker 8 is connected to the first power supply arm 3, the first end of the second circuit breaker 9 is connected to the second power supply arm 4, the first end of the third circuit breaker 10 is connected to the first electrical segment 7, the second ends of the first circuit breaker 8 and the third circuit breaker 10 are connected to the first end of the fourth circuit breaker 11, and the second end of the second circuit breaker 9 is connected to the second end of the fourth circuit breaker 11.

[0062] In the bilateral power supply mode, the first circuit breaker 8, the second circuit breaker 9, the third circuit breaker 10 and the fourth circuit breaker 11 are all closed. At this time, the first power supply arm 3 and the second power supply arm 4 are connected, and the contact network of the first electrical segment 7 is energized.

[0063] When the bilateral power supply mode is switched to the unilateral power supply mode, the third circuit breaker 10 and the fourth circuit breaker 11 are disconnected. At this time, the contact network of the first electrical segment 7 is not energized, and the first electrical segment 7 is converted to the first electrical phase.

[0064] like Figure 1 As shown, the ground automatic phase-splitting device 15 includes: a first electronic switch group 13; the first end of the first electronic switch group 13 is connected to the first power supply arm 3, and the second end of the first electronic switch group 13 is connected to the contact network of the first electrical segment 7.

[0065] The ground automatic phase-passing device 15 is used to turn on the first electronic switch group 13 after the first electrical section 7 is converted to the first electrical phase and before the train enters the first electrical phase, so that the first power supply arm 3 supplies power to the contact network of the first electrical phase. After the train passes through the first electrical phase, the first electronic switch group 13 is turned off to restore the contact network of the first electrical phase to a non-energized state, and the train completes the energized phase-passing.

[0066] The first electronic switch group 13 of the ground automatic over-phase device 15 can be a vacuum circuit breaker or a high-voltage thyristor valve group.

[0067] Optionally, the ground automatic phase-splitting device 15 is a ground automatic phase-splitting device based on a mechanical switch, a ground automatic phase-splitting device based on an electronic switch, or a ground automatic phase-splitting device based on a power electronic converter.

[0068] Optionally, the ground automatic phase-transfer device 15 is located in the sub-station 12 or near the sub-station 12 .

[0069] In embodiment 1, under normal conditions, the traction power supply system adopts a bilateral power supply mode, the first circuit breaker 8, the second circuit breaker 9, the third circuit breaker 10 and the fourth circuit breaker 11 are all closed, the first power supply arm 3 and the second power supply arm 4 are connected, and the contact network of the first electrical segment 7 is energized; the first electronic switch group 13 is disconnected, the ground automatic phase-shifting device 15 is not put into operation, and the train 6 passes through the first electrical segment 7 normally with power. Therefore, the train 6 can automatically pass through the electrical segment without perception under the bilateral power supply mode.

[0070] In embodiment 1, in a fault or decoupling state, the traction power supply system is decoupled from a bilateral power supply mode to a unilateral power supply mode. At this time, the third circuit breaker 10 and the fourth circuit breaker 11 are disconnected, the first electrical segment 7 is converted to the first electrical phase, and the ground automatic phase-over device 15 is put into operation.

[0071] When the train 6 is about to enter the first electrical segment 7 (the first electrical phase at this time) from the direction of the first power supply arm 3, the first electronic switch group 13 is turned on, and the contact network of the first electrical phase is connected to the first power supply arm 3 through the first electronic switch group 13, and the train 6 enters the first electrical phase with the voltage of the first power supply arm 3; when the train 6 passes the first electrical phase and enters the second power supply arm 4, the first electronic switch group 13 is turned off, and the contact network of the first electrical phase is restored to an unpowered state, and the train 6 completes the energized passing phase. In this way, the train 6 can automatically pass the electrical phase without perception under unilateral power supply mode.

[0072] When the train 6 is traveling from the direction of the second power supply arm 4, when the train 6 is about to enter the first electrical segment 7 (the first electrical phase at this time) from the second power supply arm 4, the first electronic switch group 13 is turned on, and the contact network of the first electrical phase is connected to the first power supply arm 3 through the first electronic switch group 13, and the train 6 enters the first electrical segment 7 with the voltage of the second power supply arm 4; when the train 6 passes the first electrical segment 7 and enters the first power supply arm 3, the first electronic switch group 13 is turned off, and the contact network of the first electrical phase is restored to an unpowered state, and the train 6 completes the energized passing phase. In this way, the train 6 can automatically energize and pass through the electrical phase without perception under unilateral power supply mode.

[0073] It should be noted that the first embodiment can only be implemented when the first power supply arm 3 and the second power supply arm 4 are allowed to short-circuit after the bilateral power supply traction power supply system is decoupled to a unilateral power supply mode. In this case, the ground automatic phase-splitting device 15 can use only one set of electronic switches, which is a low-cost solution. If the first power supply arm 3 and the second power supply arm 4 are not allowed to short-circuit after the bilateral power supply traction power supply system is decoupled to a unilateral power supply mode, the ground automatic phase-splitting device 15 needs to use two sets of electronic switches, as shown in the following second embodiment.

[0074] Example 2

[0075] In the second embodiment, the present invention provides another phase separation system that adapts to the electrical segmentation and phase conversion of the bilateral power supply mode, such as Figure 2 As shown, it includes: a first traction substation 1, a second traction substation 2, a first power supply arm 3, a second power supply arm 4, a first electrical segment 7, a substation 12 and a ground automatic phase-splitting device 15.

[0076] The first power supply arm 3 is connected to the first traction substation 1 , the second power supply arm 4 is connected to the second traction substation 2 , and the first electrical segment 7 is between the first power supply arm 3 and the second power supply arm 4 .

[0077] The substation 12 is connected to the first power supply arm 3 and the second power supply arm 4, and is used to energize the first electrical segment 7 by closing the circuit breaker under the bilateral power supply mode, and to convert the first electrical segment 7 into the first electrical phase by opening the circuit breaker when the bilateral power supply mode is decoupled to the unilateral power supply mode.

[0078] Specifically, the substation 12 includes: a first circuit breaker 8, a second circuit breaker 9, a third circuit breaker 10 and a fourth circuit breaker 11. The first end of the first circuit breaker 8 is connected to the first power supply arm 3, the first end of the second circuit breaker 9 is connected to the second power supply arm 4, the first end of the third circuit breaker 10 is connected to the first electrical segment 7, the second ends of the first circuit breaker 8 and the third circuit breaker 10 are connected to the first end of the fourth circuit breaker 11, and the second end of the second circuit breaker 9 is connected to the second end of the fourth circuit breaker 11.

[0079] In the bilateral power supply mode, the first circuit breaker 8, the second circuit breaker 9, the third circuit breaker 10 and the fourth circuit breaker 11 are all closed. At this time, the first power supply arm 3 and the second power supply arm 4 are connected, and the contact network of the first electrical segment 7 is energized.

[0080] When the bilateral power supply mode is switched to the unilateral power supply mode, the third circuit breaker 10 and the fourth circuit breaker 11 are disconnected. At this time, the contact network of the first electrical segment 7 is not energized, and the first electrical segment 7 is converted to the first electrical phase.

[0081] like Figure 2 As shown, the ground automatic phase-splitting device 15 of this embodiment includes: a first electronic switch group 13 and a second electronic switch group 14. The first end of the first electronic switch group 13 is connected to the first power supply arm 3, and the second end of the first electronic switch group 13 is connected to the contact network of the first electrical segment 7. The first end of the second electronic switch group 14 is connected to the second power supply arm 4, and the second end of the second electronic switch group 14 is connected to the second end of the first electronic switch group 13 and connected to the contact network of the first electrical segment 7.

[0082] The second electronic switch group 14 may be a vacuum circuit breaker or a high-voltage thyristor valve group.

[0083] In this embodiment, the ground automatic phase-passing device 15 is specifically used to turn on the first electronic switch group 13 after the first electrical segment 7 is converted to the first electrical phase and before the train enters the first electrical phase from the direction of the first power supply arm 3, so that the first power supply arm 3 supplies power to the contact network of the first electrical phase; when the train reaches the middle position of the contact network of the first electrical phase, the first electronic switch group 13 is turned off, and the second electronic switch group 14 is turned on, so that the second power supply arm 4 supplies power to the contact network of the first electrical phase; after the train passes the first electrical phase, the second electronic switch group 14 is turned off, so that the contact network of the first electrical phase is restored to a non-energized state, and the train completes the energized phase-passing.

[0084] In embodiment 2, under normal conditions, the traction power supply system adopts a bilateral power supply mode, the first circuit breaker 8, the second circuit breaker 9, the third circuit breaker 10 and the fourth circuit breaker 11 are all closed, the first power supply arm 3 and the second power supply arm 4 are connected, and the contact network of the first electrical segment 7 is energized; the first electronic switch group 13 and the second electronic switch group 14 are both disconnected, the ground automatic phase-shifting device 15 is not put into operation, and the train 6 passes through the first electrical segment 7 normally with power. Therefore, the train 6 can automatically pass through the electrical segment without perception under the bilateral power supply mode.

[0085] In the second embodiment, in the fault or decoupling state, the traction power supply system is decoupled from the bilateral power supply mode to the unilateral power supply mode, the third circuit breaker 10 and the fourth circuit breaker 11 are disconnected, the first electrical segment 7 is converted to the first electrical phase, and the ground automatic phase-splitting device 15 is put into operation.

[0086] When the train 6 is about to enter the first electrical segment 7 (the first electrical phase at this time) from the direction of the first power supply arm 3, the first electronic switch group 13 is turned on, and the first electrical phase contact network is connected to the first power supply arm 3 through the first electronic switch group 13, and the train 6 enters the first electrical phase with the voltage of the first power supply arm 3; when the train 6 reaches the middle position of the first electrical phase contact network, the first electronic switch group 13 is turned off, and the second electronic switch group 14 is turned on, and the first electrical phase contact network is connected to the second power supply arm 4 through the second electronic switch group 14, and the train 6 enters the second power supply arm 4 with the voltage of the second power supply arm 4; after the train 6 enters the second power supply arm 4, the second electronic switch group 14 is turned off, and the first electrical phase contact network is restored to a non-energized state, and the train 6 completes the energized passing phase, so that the train 6 can automatically pass the electrical phase without perception under unilateral power supply mode.

[0087] When the train 6 is about to enter the first electric phase from the direction of the second power supply arm 4, the second electronic switch group 14 is turned on, the first electric phase contact network is connected to the second power supply arm 4 through the second electronic switch group 14, and the train 6 enters the first electric phase with the voltage of the second power supply arm 4; when the train 6 reaches the middle position of the first electric phase contact network, the second electronic switch group 14 is turned off, the first electronic switch group 13 is turned on, the first electric phase contact network is connected to the first power supply arm 3 through the first electronic switch group 13, and the voltage of the first power supply arm 3 of the train 6 enters the first power supply arm 3; after the train 6 enters the first power supply arm 3, the first electronic switch group 13 is turned off, the first electric phase contact network is restored to a non-energized state, and the train 6 completes the energized passing phase, so that the train 6 can automatically energize and pass through the electric phase without perception under unilateral power supply mode.

[0088] Example 3

[0089] The third embodiment is a solution with two rails, such as Figure 3 As shown, the phase-splitting system for bilateral power supply mode electrical segmentation and phase conversion in the third embodiment further includes, compared to the system in the second embodiment, a third power supply arm 16, a fourth power supply arm 17, and a second electrical segment 19. The first power supply arm 3, the second power supply arm 4, and the first electrical segment 7 correspond to the first rail, and the third power supply arm 16, the fourth power supply arm 17, and the second electrical segment 19 correspond to the second rail.

[0090] The third power supply arm 16 is connected to the first traction substation 1 , the fourth power supply arm 17 is connected to the second traction substation 2 , and the second electrical segment 19 is between the third power supply arm 16 and the fourth power supply arm 17 .

[0091] The substation 12 is connected to the third power supply arm 16 and the fourth power supply arm 17. Compared with the second embodiment, the substation 12 is also used to energize the second electrical segment 19 by closing the circuit breaker under the bilateral power supply mode, and is used to convert the second electrical segment 19 into the second electrical phase by opening the circuit breaker when the bilateral power supply mode is decoupled from the unilateral power supply mode.

[0092] Specifically, compared to the second embodiment, the substation 12 further includes: a fifth circuit breaker 20, a sixth circuit breaker 21, and a seventh circuit breaker 22. The first end of the fifth circuit breaker 20 is connected to the third power supply arm 16, the first end of the sixth circuit breaker 21 is connected to the fourth power supply arm 17, the first end of the seventh circuit breaker 22 is connected to the second electrical segment 19, the second end of the fifth circuit breaker 20 is connected to the first end of the fourth circuit breaker 11, and the second ends of the sixth circuit breaker 21 and the seventh circuit breaker 22 are connected to the second end of the fourth circuit breaker 11.

[0093] In the bilateral power supply mode, the first circuit breaker 8, the second circuit breaker 9, the third circuit breaker 10, the fourth circuit breaker 11, the fifth circuit breaker 20, the sixth circuit breaker 21 and the seventh circuit breaker 22 are all closed. At this time, the contact networks of the first electrical segment 7 and the second electrical segment 19 are energized.

[0094] When the bilateral power supply mode is decoupled from the unilateral power supply mode, the seventh circuit breaker 22, the third circuit breaker 10 and the fourth circuit breaker 11 are disconnected. At this time, the contact networks of the first electrical segment 7 and the second electrical segment 19 are not energized, the first electrical segment 7 is converted to the first electrical phase, and the second electrical segment 19 is converted to the second electrical phase.

[0095] In the third embodiment, compared to the second embodiment, the ground automatic phase-splitting device 15 further includes a third electronic switch group 23 and a fourth electronic switch group 24. The first end of the third electronic switch group 23 is connected to the third power supply arm 16, the first end of the fourth electronic switch group 24 is connected to the fourth power supply arm 17, and the second ends of the third electronic switch group 23 and the fourth electronic switch group 24 are connected to each other and connected to the contact network of the second electrical segment 19.

[0096] The third electronic switch group 23 and the fourth electronic switch group 24 of the ground automatic phase-splitting device 15 can be vacuum circuit breakers or high-voltage thyristor valve groups.

[0097] In Example 3, compared with Example 2, the ground automatic phase-passing device 15 is also used to turn on the third electronic switch group 23 after the second electrical segment 19 is converted to the second electrical phase and before the train located on the second rail 18 enters the second electrical phase from the direction of the third power supply arm 16, so that the third power supply arm 16 supplies power to the contact network of the second electrical phase; when the train reaches the middle position of the contact network of the second electrical phase, the third electronic switch group 23 is turned off, and the fourth electronic switch group 24 is turned on, so that the fourth power supply arm 17 supplies power to the contact network of the second electrical phase; after the train passes the second electrical phase, the fourth electronic switch group 24 is turned off, so that the contact network of the second electrical phase is restored to a non-energized state, and the train completes the energized phase-passing.

[0098] It should be noted that the specific schemes of the train on the first rail 5 in the third embodiment passing through the electric segment under the double-sided power supply mode and passing through the electric phase under the single-sided power supply mode can be referred to the scheme in the second embodiment, which will not be repeated here.

[0099] The specific schemes of the train on the second rail 18 passing through the electric segment under the double-side power supply mode and passing through the electric phase under the single-side power supply mode will be described below.

[0100] In Example 3, the traction power supply system operates in a bilateral power supply mode. Circuit breakers 1 through 7 are closed, and the third and fourth power supply arms 16 and 17 simultaneously supply power to the second electrical segment 19. At this point, the contact network of the second electrical segment 19 is energized. The third and fourth electronic switch groups 23 and 24 are both disconnected, and the automatic ground-based phase separation device 15 is deactivated. Trains on the second rail 18 pass through the second electrical segment 19 normally while energized. Consequently, trains on the second rail 18 can pass through the electrical segment automatically and without detection using bilateral power supply.

[0101] In embodiment three, in a fault or decoupling state, after the traction power supply system is decoupled from the bilateral power supply mode to the unilateral power supply mode, the seventh circuit breaker 22, the third circuit breaker 10 and the fourth circuit breaker 11 are disconnected. At this time, the contact network of the second electrical segment 19 is not energized, the second electrical segment 19 is converted to the second electrical phase, and the ground automatic over-phase device 15 is put into operation.

[0102] In embodiment three, when the train on the second rail 18 is about to enter the second electrical segment 19 (at this time the second electrical phase) from the direction of the fourth power supply arm 17, the fourth electronic switch group 24 is turned on, and the second electrical phase contact network is connected to the fourth power supply arm 17 through the fourth electronic switch group 24, and the train enters the second electrical phase with the voltage of the fourth power supply arm 17; when the train reaches the middle position of the second electrical phase contact network, the fourth electronic switch group 24 is turned off, and the third electronic switch group 23 is turned on, and the second electrical phase contact network is connected to the third power supply arm 16 through the third electronic switch group 23. When the train exits the second electrical phase, it enters the third power supply arm 16 with the voltage of the third power supply arm 16; after the train enters the third power supply arm 16, the third electronic switch group 23 is turned off, and the contact network of the second electrical phase returns to a non-energized state, and the train completes the energized phase-by-phase transition. Therefore, the train on the second rail 18 can automatically energize and pass through the electrical phase without perception under unilateral power supply mode.

[0103] In embodiment three, when the train on the second rail 18 is about to enter the second electrical segment 19 (at this time the second electrical phase) from the direction of the third power supply arm 16, the third electronic switch group 23 is turned on, and the second electrical phase contact network is connected to the third power supply arm 16 through the third electronic switch group 23, and the train enters the second electrical phase with the voltage of the third power supply arm 16; when the train reaches the middle position of the second electrical phase contact network, the third electronic switch group 23 is turned off, and the fourth electronic switch group 24 is turned on, and the second electrical phase contact network is connected to the fourth power supply arm 17 through the fourth electronic switch group 24. When the train exits the second electrical phase, it enters the fourth power supply arm 17 with the voltage of the fourth power supply arm 17; after the train enters the fourth power supply arm 17, the fourth electronic switch group 24 is turned off, and the contact network of the second electrical phase returns to a non-energized state, and the train completes the energized phase-crossing. Therefore, the train on the second rail 18 can automatically energize and pass through the electrical phase without perception under unilateral power supply mode.

[0104] As can be seen from the above embodiments, the present invention provides a train over-phase scheme that adapts to the working conditions of electrical segmentation and electrical phase separation conversion. The present invention is combined with a ground automatic over-phase device, so that the train can perform live segmentation under the bilateral power supply mode, and perform live phase separation after the bilateral power supply mode is decoupled from the unilateral power supply mode. There is no need to adjust the train operation control system and there is no need to increase the communication between the ground traction power supply system and the train. The train can automatically pass the electrical segmentation / electrical phase separation without any perception without any operation, which effectively solves the problem of train over-segmentation / phase separation under the dual / unilateral power supply mode conversion state. The method is simple and highly reliable, which can ensure the safe operation of the train and improve the reliability of the traction power supply system.

[0105] Based on the same inventive concept, an embodiment of the present invention further provides a phase-over method adapted to electrical segmentation and phase conversion in a bilateral power supply mode, which is applied to the phase-over system adapted to electrical segmentation and phase conversion in a bilateral power supply mode in the above-mentioned embodiment, as described in the following embodiments four, five, and six. Since the principles for solving the problem of the phase-over method adapted to electrical segmentation and phase conversion in a bilateral power supply mode are similar to those of the phase-over system adapted to electrical segmentation and phase conversion in a bilateral power supply mode, the embodiments of the phase-over method adapted to electrical segmentation and phase conversion in a bilateral power supply mode can be referred to the embodiments of the phase-over system adapted to electrical segmentation and phase conversion in a bilateral power supply mode, and the repeated parts will not be repeated.

[0106] It should be noted that the execution subject of the phase-splitting method for electrical segmentation and phase conversion adapted to the bilateral power supply mode of the present invention is a computer.

[0107] Example 4

[0108] In this embodiment, the present invention provides a phase-splitting method that adapts to the electrical segmentation and phase conversion of the bilateral power supply mode. The method is applied to the phase-splitting system that adapts to the electrical segmentation and phase conversion of the bilateral power supply mode described in Example 1. Figure 4 As shown, the method of this embodiment includes step S101 and step S102.

[0109] Step S101: when the double-side power supply mode is switched to the single-side power supply mode, the first electrical segment is switched to the first electrical phase by disconnecting the circuit breaker in the substation.

[0110] In this step, when the computer receives an instruction to switch from a bilateral power supply mode to a unilateral power supply mode, it sends a control instruction to disconnect the circuit breaker to the partition, disconnecting the circuit breaker in the partition and converting the first electrical segment into the first electrical phase.

[0111] In this step, the instruction for switching from the bilateral power supply mode to the unilateral power supply mode may be issued by the computer when a system abnormality is detected, or may be sent by a staff member to the computer via a terminal device.

[0112] In the present invention, this step can specifically disconnect the third circuit breaker 10 and the fourth circuit breaker 11 in the substation 12. At this time, the contact network of the first electrical segment 7 is not energized, and the first electrical segment 7 is converted to the first electrical phase.

[0113] In the present invention, the circuit breakers in substation 12 in this step are electronic circuit breakers based on solid-state electronic devices, capable of responding to Modbus protocol commands sent by a computer via a fiber-optic communication interface. When the traction power supply system needs to switch from bilateral to unilateral power supply mode, the computer sends a control instruction containing a disconnect command to third and fourth circuit breakers 10 and 11, causing them to disconnect synchronously, completely severing the electrical connection between first electrical segment 7 and first and second power supply arms 3 and 4, ensuring that electrical segment 7 is converted to a de-energized phase.

[0114] Step S102: Before the train enters the first electrical phase, turn on the first electronic switch group so that the first power supply arm supplies power to the contact network of the first electrical phase; after the train passes through the first electrical phase, turn off the first electronic switch group so that the contact network of the first electrical phase is restored to a non-energized state, and the train completes the energized phase passing.

[0115] In this step, when the computer receives a signal indicating that a train is about to enter the first electrical phase, it sends an on-control instruction to the first electronic switch group, turning it on and allowing the first power supply arm to supply power to the overhead contact network of the first electrical phase. When the computer receives a signal indicating that a train has passed through the first electrical phase, it sends an off-control instruction to the first electronic switch group, turning it off and restoring the overhead contact network of the first electrical phase to a de-energized state.

[0116] In the present invention, sensors can be used to detect whether a train is about to enter the first electrical phase, and whether a train has passed the first electrical phase. For example, an infrared sensor can be set on the rail to check whether a train is about to enter or pass the electrical phase. The infrared sensor can use modulated infrared light beams and synchronous demodulation technology to trigger signal changes by detecting that the train wheels block the light beam and transmit the signal to a computer.

[0117] Example 5

[0118] In this embodiment, the present invention provides another phase-splitting method that adapts to the electrical segmentation and phase conversion of the bilateral power supply mode. This method is applied to the phase-splitting system that adapts to the electrical segmentation and phase conversion of the bilateral power supply mode described in Example 2, such as Figure 5As shown, the method of this embodiment includes step S201 and step S202.

[0119] Step S201: when the double-side power supply mode is switched to the single-side power supply mode, the first electrical segment is switched to the first electrical phase by disconnecting the circuit breaker in the substation.

[0120] In this step, when the computer receives an instruction to switch from a bilateral power supply mode to a unilateral power supply mode, it sends a control instruction to disconnect the circuit breaker to the partition, disconnecting the circuit breaker in the partition and converting the first electrical segment into the first electrical phase.

[0121] In the present invention, this step can specifically disconnect the third circuit breaker 10 and the fourth circuit breaker 11 in the substation 12. At this time, the contact network of the first electrical segment 7 is not energized, and the first electrical segment 7 is converted to the first electrical phase.

[0122] In this step, the computer specifically sends a control instruction to open the circuit breakers to the third circuit breaker 10 and the fourth circuit breaker 11 .

[0123] Step S202: Before the train enters the first electrical phase from the direction of the first power supply arm, the first electronic switch group is turned on so that the first power supply arm supplies power to the contact network of the first electrical phase. When the train reaches the middle position of the contact network of the first electrical phase, the first electronic switch group is turned off and the second electronic switch group is turned on so that the second power supply arm supplies power to the contact network of the first electrical phase. After the train passes the first electrical phase, the second electronic switch group is turned off so that the contact network of the first electrical phase is restored to a non-energized state, and the train completes the energized passing phase.

[0124] In this step, when the computer receives a signal that a train is about to enter the first electrical phase from the direction of the first power supply arm, a conduction control instruction is sent to the first electronic switch group to turn on the first electronic switch group, and the first power supply arm supplies power to the contact network of the first electrical phase. When the computer receives a signal that the train has reached the middle position of the contact network of the first electrical phase, a shutdown control instruction is sent to the first electronic switch group, and a conduction control instruction is sent to the second electronic switch group to turn off the first electronic switch group, turn on the second electronic switch group, and the second power supply arm supplies power to the contact network of the first electrical phase. When the computer receives a signal that the train has passed the first electrical phase, a shutdown control instruction is sent to the second electronic switch group to turn off the second electronic switch group, and the contact network of the first electrical phase is restored to a non-energized state.

[0125] In the present invention, a sensor can be used to detect whether the train has traveled to the middle position of the contact network of the first electrical phase.

[0126] Example 6

[0127] In this embodiment, the present invention provides another phase-splitting method that adapts to the electrical segmentation and phase conversion of the bilateral power supply mode. This method is applied to the phase-splitting system that adapts to the electrical segmentation and phase conversion of the bilateral power supply mode described in Example 3, such as Figure 6 As shown, the method of this embodiment includes steps S301 to S303.

[0128] Step S301: When the bilateral power supply mode is switched to the unilateral power supply mode, the first electrical segment is switched to the first electrical phase and the second electrical segment is switched to the second electrical phase by disconnecting the circuit breaker in the substation.

[0129] In this step, when the computer receives an instruction to switch from a bilateral power supply mode to a unilateral power supply mode, it sends a control instruction to disconnect the circuit breaker to the substation, causing the circuit breaker in the substation to disconnect, thereby converting the first electrical segment to the first electrical phase and the second electrical segment to the second electrical phase. In the present invention, this step can specifically disconnect the seventh circuit breaker 22, the third circuit breaker 10, and the fourth circuit breaker 11 in the substation 12. At this time, the contact network of the second electrical segment 19 is de-energized, and the second electrical segment 19 is converted to the second electrical phase.

[0130] In this step, the computer specifically sends a control instruction to open the circuit breakers to the seventh circuit breaker 22 , the third circuit breaker 10 and the fourth circuit breaker 11 .

[0131] Step S302: Before the train located on the first rail travels from the direction of the first power supply arm into the first electrical phase, the first electronic switch group is turned on so that the first power supply arm supplies power to the contact network of the first electrical phase. When the train reaches the middle position of the contact network of the first electrical phase, the first electronic switch group is turned off and the second electronic switch group is turned on so that the second power supply arm supplies power to the contact network of the first electrical phase. After the train passes the first electrical phase, the second electronic switch group is turned off so that the contact network of the first electrical phase is restored to a non-energized state, and the train completes the energized passing phase.

[0132] In this step, when the computer receives a signal that a train on the first rail is about to enter the first electrical phase from the direction of the first power supply arm, a conduction control instruction is sent to the first electronic switch group to turn on the first electronic switch group, and the first power supply arm supplies power to the contact network of the first electrical phase. When the computer receives a signal that the train has reached the middle position of the contact network of the first electrical phase, a shutdown control instruction is sent to the first electronic switch group, and a conduction control instruction is sent to the second electronic switch group to turn off the first electronic switch group, turn on the second electronic switch group, and the second power supply arm supplies power to the contact network of the first electrical phase. When the computer receives a signal that the train has passed the first electrical phase, a shutdown control instruction is sent to the second electronic switch group to turn off the second electronic switch group, and the contact network of the first electrical phase is restored to a non-energized state. Step S303: Before the train located on the second rail travels from the direction of the third power supply arm into the second electrical phase, the third electronic switch group is turned on so that the third power supply arm supplies power to the contact network of the second electrical phase. When the train reaches the middle position of the contact network of the second electrical phase, the third electronic switch group is turned off and the fourth electronic switch group is turned on so that the fourth power supply arm supplies power to the contact network of the second electrical phase. After the train passes the second electrical phase, the fourth electronic switch group is turned off so that the contact network of the second electrical phase is restored to a non-energized state, and the train completes the energized phase crossing.

[0133] In this step, when the computer receives a signal that a train on the second rail is about to enter the second electrical phase from the direction of the third power supply arm, a conduction control instruction is sent to the third electronic switch group to turn on the third electronic switch group, and the third power supply arm supplies power to the contact network of the second electrical phase. When the computer receives a signal that the train has reached the middle position of the contact network of the second electrical phase, a shutdown control instruction is sent to the third electronic switch group, and a conduction control instruction is sent to the fourth electronic switch group to turn off the third electronic switch group, turn on the fourth electronic switch group, and the fourth power supply arm supplies power to the contact network of the second electrical phase. When the computer receives a signal that the train has passed the second electrical phase, a shutdown control instruction is sent to the fourth electronic switch group to turn off the fourth electronic switch group, and the contact network of the second electrical phase is restored to a non-energized state.

[0134] In the present invention, sensors can be used to detect whether a train is about to enter the second electrical phase, whether the train passes the second electrical phase, and whether the train travels to the middle position of the contact network of the second electrical phase.

[0135] It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and that, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0136] Based on the same inventive concept, an embodiment of the present invention also provides an over-phase device that is adaptable to the electrical segmentation and phase conversion of the bilateral power supply mode, which is applied to the over-phase system that is adaptable to the electrical segmentation and phase conversion of the bilateral power supply mode in the above-mentioned embodiment, as described in the following embodiment. Since the principle of solving the problem by the over-phase device that is adaptable to the electrical segmentation and phase conversion of the bilateral power supply mode is similar to that of the over-phase system that is adaptable to the electrical segmentation and phase conversion of the bilateral power supply mode, the embodiment of the over-phase device that is adaptable to the electrical segmentation and phase conversion of the bilateral power supply mode can refer to the embodiment of the over-phase system that is adaptable to the electrical segmentation and phase conversion of the bilateral power supply mode, and the repetitions will not be repeated. As used below, the term "unit" or "module" can be a combination of software and / or hardware that can implement predetermined functions. Although the device described in the following embodiments is preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and conceived.

[0137] On the other hand, the present invention also provides a phase-splitting device that adapts to the electrical segmentation and phase conversion of the bilateral power supply mode. The device is applied to the phase-splitting system that adapts to the electrical segmentation and phase conversion of the bilateral power supply mode described in the first embodiment, such as Figure 7 As shown, the device includes:

[0138] The first power supply mode switching processing unit 100 is configured to, when the bilateral power supply mode is switched to the unilateral power supply mode, switch the first electrical segment to the first electrical phase by disconnecting the circuit breaker in the substation;

[0139] The first energized over-phase processing unit 200 is used to turn on the first electronic switch group before the train enters the first electrical phase, so that the first power supply arm supplies power to the contact network of the first electrical phase; after the train passes through the first electrical phase, the first electronic switch group is turned off to restore the contact network of the first electrical phase to a non-energized state, and the train completes the energized over-phase.

[0140] On the other hand, the present invention also provides another phase-splitting device that adapts to the electrical segmentation and phase conversion of the bilateral power supply mode. The device is applied to the phase-splitting system that adapts to the electrical segmentation and phase conversion of the bilateral power supply mode described in the second embodiment, such as Figure 8 As shown, the device includes:

[0141] The second power supply mode switching processing unit 300 is configured to, when the bilateral power supply mode is switched to the unilateral power supply mode, switch the first electrical segment to the first electrical phase by disconnecting the circuit breaker in the substation;

[0142] The second energized over-phase processing unit 400 is used to turn on the first electronic switch group before the train enters the first electrical phase from the direction of the first power supply arm, so that the first power supply arm supplies power to the contact network of the first electrical phase; when the train reaches the middle position of the contact network of the first electrical phase, turn off the first electronic switch group, turn on the second electronic switch group, so that the second power supply arm supplies power to the contact network of the first electrical phase; after the train passes the first electrical phase, turn off the second electronic switch group, so that the contact network of the first electrical phase is restored to a non-energized state, and the train completes the energized over-phase.

[0143] On the other hand, the present invention also provides another phase-splitting device that adapts to the electrical segmentation and phase conversion of the bilateral power supply mode. The device is applied to the phase-splitting system that adapts to the electrical segmentation and phase conversion of the bilateral power supply mode described in the third embodiment, such as Figure 9 As shown, the device includes:

[0144] The third power supply mode switching processing unit 500 is configured to, when the bilateral power supply mode is switched to the unilateral power supply mode, switch the first power segment to the first power phase and the second power segment to the second power phase by disconnecting the circuit breaker in the substation;

[0145] The third energized over-phase processing unit 600 is used to turn on the first electronic switch group before the train on the first rail enters the first electrical phase from the direction of the first power supply arm, so that the first power supply arm supplies power to the contact network of the first electrical phase; when the train reaches the middle position of the contact network of the first electrical phase, turn off the first electronic switch group and turn on the second electronic switch group so that the second power supply arm supplies power to the contact network of the first electrical phase; after the train passes the first electrical phase, turn off the second electronic switch group so that the contact network of the first electrical phase is restored to a non-energized state, and the train completes the energized over-phase;

[0146] The fourth energized over-phase processing unit 700 is used to turn on the third electronic switch group before the train located on the second rail travels from the direction of the third power supply arm into the second power phase, so that the third power supply arm supplies power to the contact network of the second power phase; when the train reaches the middle position of the contact network of the second power phase, the third electronic switch group is turned off, and the fourth electronic switch group is turned on, so that the fourth power supply arm supplies power to the contact network of the second power phase; after the train passes the second power phase, the fourth electronic switch group is turned off, so that the contact network of the second power phase is restored to a non-energized state, and the train completes the energized over-phase.

[0147] In order to achieve the above object, according to another aspect of the present application, a computer device is also provided. Figure 10As shown, the computer device includes a memory, a processor, a communication interface and a communication bus. The memory stores a computer program that can be run on the processor. When the processor executes the computer program, the steps in the above embodiment method are implemented.

[0148] The processor may be a central processing unit (CPU). The processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or a combination of the above chips.

[0149] Memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs, non-transitory computer-executable programs, and units, such as the corresponding program units in the above-described method embodiments of the present invention. The processor executes the non-transitory software programs, instructions, and modules stored in memory to perform various processor functions and work data processing, thereby implementing the methods in the above-described method embodiments.

[0150] The memory may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created by the processor, etc. In addition, the memory may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some embodiments, the memory may optionally include a memory remotely located relative to the processor, and these remote memories may be connected to the processor via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0151] The one or more units are stored in the memory, and when executed by the processor, perform the method in the above embodiment.

[0152] The specific details of the above-mentioned computer device can be understood by referring to the corresponding descriptions and effects in the above-mentioned embodiments, and will not be repeated here.

[0153] In order to achieve the above-mentioned purpose, according to another aspect of the present application, a computer-readable storage medium is further provided, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed in a computer processor, the steps in the above-mentioned over-phase method for adapting to the electrical segmentation and phase conversion of the bilateral power supply mode are implemented. It can be understood by those skilled in the art that the implementation of all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium, and when the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM), a random access memory (RAM), a flash memory (Flash Memory), a hard disk drive (HDD) or a solid-state drive (SSD), etc.; the storage medium can also include a combination of the above-mentioned types of memory.

[0154] In order to achieve the above-mentioned purpose, according to another aspect of the present application, a computer program product is also provided, including a computer program / instruction, which, when executed by a processor, implements the steps of the above-mentioned over-phase method for electrical segmentation and phase conversion adapted to the bilateral power supply mode.

[0155] Obviously, those skilled in the art will appreciate that the modules or steps of the present invention described above can be implemented using a general-purpose computing device. They can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they can be implemented using program code executable by a computing device, which can then be stored in a storage device and executed by the computing device. Alternatively, they can be fabricated into separate integrated circuit modules, or multiple modules or steps can be fabricated into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0156] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A phase-splitting system adapted to the electrical segmentation and phase conversion of bilateral power supply mode, characterized in that: include: The first traction substation, the second traction substation, the first power supply arm, the second power supply arm, the first electrical section, the subsection, and the ground automatic phase-splitting device; The first power supply arm is connected to the first traction substation, the second power supply arm is connected to the second traction substation, and the first electrical segment is between the first power supply arm and the second power supply arm; The substation is connected to the first power supply arm and the second power supply arm, and is used to energize the first electrical segment by closing the circuit breaker in a bilateral power supply mode, and is used to convert the first electrical segment into a first electrical phase by opening the circuit breaker when the bilateral power supply mode is switched to a unilateral power supply mode; The ground automatic phase-splitting device comprises: a first electronic switch group; A first end of the first electronic switch group is connected to the first power supply arm, and a second end of the first electronic switch group is connected to the contact network of the electrical segment; The ground automatic phase-passing device is used to turn on the first electronic switch group after the first electrical segment is converted to the first electrical phase and before the train enters the first electrical phase, so that the first power supply arm supplies power to the contact network of the first electrical phase; after the train passes through the first electrical phase, the first electronic switch group is turned off to restore the contact network of the first electrical phase to a non-energized state, and the train completes the energized phase-passing.

2. The phase-splitting system adapted to the electrical segmentation and phase conversion of the bilateral power supply mode according to claim 1 is characterized in that: The partition includes: a first circuit breaker, a second circuit breaker, a third circuit breaker and a fourth circuit breaker; a first end of the first circuit breaker is connected to the first power supply arm, a first end of the second circuit breaker is connected to the second power supply arm, a first end of the third circuit breaker is connected to the first electrical segment, a second end of the first circuit breaker and the third circuit breaker is connected to the first end of the fourth circuit breaker, and a second end of the second circuit breaker is connected to the second end of the fourth circuit breaker; In the bilateral power supply mode, the first circuit breaker, the second circuit breaker, the third circuit breaker and the fourth circuit breaker are all closed. At this time, the first power supply arm and the second power supply arm are connected, and the contact network of the first electrical segment is energized; when the bilateral power supply mode is decoupled from the unilateral power supply mode, the third circuit breaker and the fourth circuit breaker are disconnected. At this time, the contact network of the first electrical segment is not energized, and the first electrical segment is converted to the first electrical phase.

3. The phase-splitting system adapted to the electrical segmentation and phase conversion of the bilateral power supply mode according to claim 1 is characterized in that: The ground automatic phase-splitting device further includes: a second electronic switch group; a first end of the second electronic switch group is connected to the second power supply arm, a second end of the second electronic switch group is connected to the second end of the first electronic switch group and is connected to the contact network of the first electrical segment; The ground automatic phase-passing device is also used to turn on the first electronic switch group after the first electrical segment is converted to the first electrical phase and before the train enters the first electrical phase from the direction of the first power supply arm, so that the first power supply arm supplies power to the contact network of the first electrical phase; when the train reaches the middle position of the contact network of the first electrical phase, turn off the first electronic switch group, turn on the second electronic switch group, so that the second power supply arm supplies power to the contact network of the first electrical phase; after the train passes the first electrical phase, turn off the second electronic switch group, so that the contact network of the first electrical phase is restored to a non-energized state, and the train completes the energized phase-passing.

4. The phase-splitting system adapted to the electrical segmentation and phase conversion of the bilateral power supply mode according to any one of claims 1 to 3, characterized in that: Also includes: a third power supply arm, a fourth power supply arm and a second power segment; The first power supply arm, the second power supply arm and the first electrical segment correspond to the first rail, and the third power supply arm, the fourth power supply arm and the second electrical segment correspond to the second rail; The third power supply arm is connected to the first traction substation, the fourth power supply arm is connected to the second traction substation, and the second power segment is between the third power supply arm and the fourth power supply arm; The substation is connected to the third power supply arm and the fourth power supply arm, and is further used to energize the second electrical segment by closing the circuit breaker in a bilateral power supply mode, and is used to convert the second electrical segment into a second electrical phase by opening the circuit breaker when the bilateral power supply mode is switched to a unilateral power supply mode; The ground automatic phase-splitting device further comprises: a third electronic switch group and a fourth electronic switch group; The first end of the third electronic switch group is connected to the third power supply arm, the first end of the fourth electronic switch group is connected to the fourth power supply arm, and the second ends of the third electronic switch group and the fourth electronic switch group are connected and connected to the contact network of the second electrical segment; The ground automatic phase-passing device is also used to turn on the third electronic switch group after the second electrical segment is converted to the second electrical phase and before the train located on the second rail enters the second electrical phase from the direction of the third power supply arm, so that the third power supply arm supplies power to the contact network of the second electrical phase; when the train reaches the middle position of the contact network of the second electrical phase, turn off the third electronic switch group, turn on the fourth electronic switch group, so that the fourth power supply arm supplies power to the contact network of the second electrical phase; after the train passes the second electrical phase, turn off the fourth electronic switch group, so that the contact network of the second electrical phase is restored to a non-energized state, and the train completes the energized phase-passing.

5. The phase-splitting system adapted to the electrical segmentation and phase conversion of the bilateral power supply mode according to claim 4 is characterized in that: The sub-station further includes: a fifth circuit breaker, a sixth circuit breaker, and a seventh circuit breaker; a first end of the fifth circuit breaker is connected to the third power supply arm, a first end of the sixth circuit breaker is connected to the fourth power supply arm, a first end of the seventh circuit breaker is connected to the second electrical segment, a second end of the fifth circuit breaker is connected to the first end of the fourth circuit breaker, and a second end of the sixth circuit breaker and the seventh circuit breaker is connected to the second end of the fourth circuit breaker; In the bilateral power supply mode, the first circuit breaker, the second circuit breaker, the third circuit breaker, the fourth circuit breaker, the fifth circuit breaker, the sixth circuit breaker and the seventh circuit breaker are all closed, and the contact networks of the first electrical segment and the second electrical segment are energized; when the bilateral power supply mode is decoupled from the unilateral power supply mode, the seventh circuit breaker, the third circuit breaker and the fourth circuit breaker are disconnected, and the contact networks of the first electrical segment and the second electrical segment are not energized, the first electrical segment is converted to the first electrical phase, and the second electrical segment is converted to the second electrical phase.

6. The phase-splitting system adapted to the electrical segmentation and phase conversion of the bilateral power supply mode according to claim 4 is characterized in that: The first electronic switch group, the second electronic switch group, the third electronic switch group and the fourth electronic switch group are vacuum circuit breakers or high-voltage thyristor valve groups.

7. The phase-splitting system adapted to the electrical segmentation and phase conversion of the bilateral power supply mode according to claim 1 is characterized in that: The ground automatic phase-over device is a ground automatic phase-over device based on a mechanical switch, a ground automatic phase-over device based on an electronic switch, or a ground automatic phase-over device based on a power electronic converter.

8. A phase-splitting method for converting electrical segmentation and phase separation in a bilateral power supply mode, characterized in that: Applied to the over-phase system adapted to the electrical segmentation and phase conversion of the bilateral power supply mode as claimed in claim 1, the method comprises: When the double-side power supply mode is switched to the single-side power supply mode, the first electrical segment is switched to the first electrical phase by disconnecting the circuit breaker in the substation; Before the train enters the first electrical phase, the first electronic switch group is turned on so that the first power supply arm supplies power to the contact network of the first electrical phase; after the train passes through the first electrical phase, the first electronic switch group is turned off so that the contact network of the first electrical phase is restored to a non-energized state, and the train completes the energized phase passing.

9. A phase-splitting method for converting electrical segmentation and phase separation in a bilateral power supply mode, characterized in that: Applied to the over-phase system adapted to the electrical segmentation and phase conversion of the bilateral power supply mode as claimed in claim 3, the method comprises: When the double-side power supply mode is switched to the single-side power supply mode, the first electrical segment is switched to the first electrical phase by disconnecting the circuit breaker in the substation; Before the train enters the first electrical phase from the direction of the first power supply arm, the first electronic switch group is turned on so that the first power supply arm supplies power to the contact network of the first electrical phase. When the train reaches the middle position of the contact network of the first electrical phase, the first electronic switch group is turned off and the second electronic switch group is turned on so that the second power supply arm supplies power to the contact network of the first electrical phase. After the train passes the first electrical phase, the second electronic switch group is turned off so that the contact network of the first electrical phase is restored to a non-energized state, and the train completes the energized phase crossing.

10. A phase-splitting method for converting electrical segmentation and phase separation in a bilateral power supply mode, characterized in that: Applied to the over-phase system adapted to the electrical segmentation and phase conversion of the bilateral power supply mode as claimed in claim 4, the method comprises: When the double-sided power supply mode is switched to the single-sided power supply mode, the first electrical segment is switched to the first electrical phase and the second electrical segment is switched to the second electrical phase by disconnecting the circuit breaker in the substation; Before the train on the first rail travels from the first power supply arm into the first electrical phase, the first electronic switch group is turned on so that the first power supply arm supplies power to the contact network of the first electrical phase; when the train reaches the middle position of the contact network of the first electrical phase, the first electronic switch group is turned off and the second electronic switch group is turned on so that the second power supply arm supplies power to the contact network of the first electrical phase; after the train passes the first electrical phase, the second electronic switch group is turned off so that the contact network of the first electrical phase is restored to a non-energized state, and the train completes the energized phase crossing; Before the train on the second rail travels from the direction of the third power supply arm into the second electrical phase, the third electronic switch group is turned on so that the third power supply arm supplies power to the contact network of the second electrical phase. When the train reaches the middle position of the contact network of the second electrical phase, the third electronic switch group is turned off and the fourth electronic switch group is turned on so that the fourth power supply arm supplies power to the contact network of the second electrical phase. After the train passes the second electrical phase, the fourth electronic switch group is turned off so that the contact network of the second electrical phase is restored to a non-energized state, and the train completes the energized phase crossing.

11. A phase-splitting device adapted to the electrical segmentation and phase conversion of a bilateral power supply mode, characterized in that: Applicable to the over-phase system adapted to the electrical segmentation and phase conversion of the bilateral power supply mode as claimed in claim 1, the device comprises: A first power supply mode switching processing unit is configured to, when the bilateral power supply mode is switched to the unilateral power supply mode, switch the first electrical segment to the first electrical phase by disconnecting the circuit breaker in the substation; The first energized phase-over processing unit is used to turn on the first electronic switch group before the train enters the first phase, so that the first power supply arm supplies power to the contact network of the first phase; after the train passes through the first phase, the first electronic switch group is turned off to restore the contact network of the first phase to a non-energized state, and the train completes the energized phase-over.

12. A phase-splitting device adapted to the electrical segmentation and phase conversion of a bilateral power supply mode, characterized in that: Applicable to the over-phase system adapted to the electrical segmentation and phase conversion of the bilateral power supply mode as claimed in claim 3, the device comprises: A second power supply mode switching processing unit is configured to, when the bilateral power supply mode is switched to the unilateral power supply mode, switch the first electrical segment to the first electrical phase by disconnecting the circuit breaker in the substation; The second energized over-phase processing unit is used to turn on the first electronic switch group before the train enters the first electrical phase from the direction of the first power supply arm, so that the first power supply arm supplies power to the contact network of the first electrical phase; when the train reaches the middle position of the contact network of the first electrical phase, turn off the first electronic switch group, turn on the second electronic switch group, so that the second power supply arm supplies power to the contact network of the first electrical phase; after the train passes the first electrical phase, turn off the second electronic switch group, so that the contact network of the first electrical phase is restored to a non-energized state, and the train completes the energized over-phase.

13. A phase-splitting device adapted to the electrical segmentation and phase conversion of a bilateral power supply mode, characterized in that: Applicable to the over-phase system adapted to the electrical segmentation and phase conversion of the bilateral power supply mode as claimed in claim 4, the device comprises: a third power supply mode switching processing unit, configured to, when the bilateral power supply mode is switched to the unilateral power supply mode, switch the first electrical segment to the first electrical phase and the second electrical segment to the second electrical phase by disconnecting the circuit breaker in the substation; a third energized over-phase processing unit, configured to, before the train located on the first rail travels from the first power supply arm into the first power phase, turn on the first electronic switch group, so that the first power supply arm supplies power to the contact network of the first power phase; when the train reaches the middle position of the contact network of the first power phase, turn off the first electronic switch group, turn on the second electronic switch group, so that the second power supply arm supplies power to the contact network of the first power phase; after the train passes the first power phase, turn off the second electronic switch group, so that the contact network of the first power phase is restored to a non-energized state, and the train completes the energized over-phase; The fourth energized over-phase processing unit is used to turn on the third electronic switch group before the train located on the second rail travels from the direction of the third power supply arm into the second power phase, so that the third power supply arm supplies power to the contact network of the second power phase; when the train reaches the middle position of the contact network of the second power phase, the third electronic switch group is turned off, and the fourth electronic switch group is turned on, so that the fourth power supply arm supplies power to the contact network of the second power phase; after the train passes the second power phase, the fourth electronic switch group is turned off, so that the contact network of the second power phase is restored to a non-energized state, and the train completes the energized over-phase.

14. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 8 to 10 are implemented.

15. A computer-readable storage medium having a computer program / instruction stored thereon, characterized in that: When the computer program / instructions are executed by a processor, the steps of the method according to any one of claims 8 to 10 are implemented.

16. A computer program product comprising a computer program / instructions, characterized in that When the computer program / instructions are executed by a processor, the steps of the method according to any one of claims 8 to 10 are implemented.

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