Train neutral section passing control method and system
By installing an overphase sensor on the train, sensing ground signals and controlling circuit breakers, the automatic overphase control of the train is realized, solving the overphase problem during cross-line operation, ensuring safe passage through the phase separation zone, and meeting the existing lines The coordinated development needs with passenger dedicated lines.
Patent Information
- Application Number
- CN202411698273.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-01-10
AI Technical Summary
Existing trains cannot achieve excessive phase control when running across lines, and cannot switch excessive phase processes for hot standby, resulting in the inability to meet the coordinated development needs of existing railways and passenger dedicated railways.
By installing several overphase sensors on the train, sensing the ground signal and determining the automatic overphase mode based on the sensed signal, controlling the disconnection and closing of the circuit breaker during the phase separation process, the automatic overphase control of the train is realized. , avoid mutual interference between different types of signals.
It realizes automatic excessive phase control of the train, ensures that the train can pass through the phase separation zone safely when running across lines, avoids mutual interference between different signals, meets the coordinated development needs of existing lines and passenger dedicated lines, and reduces drivers' operations. burden.
Smart Images
Figure CN119283934A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of rail transit technology, and in particular to a train over-phase control method and system. Background Art
[0002] The coordinated development of existing railways and passenger dedicated lines is an important development direction in China's railway transportation system. Existing railways and passenger dedicated lines each have their own unique advantages and functional positioning. Through coordinated development, resource allocation can be optimized, overall transportation efficiency can be improved, and the growing travel needs of passengers can be met.
[0003] The phase-splitting area is the non-electric section of the electrified railway. The electricity of different phases supplied by different substations is isolated through two phase-splitting switches to prevent accidents such as substation tripping and contact network fusing caused by short circuit of different phases.
[0004] At present, existing lines use over-phase control units based on magnetic steel signals, and passenger dedicated lines mostly use over-phase control units based on ATP (Automatic Train Protection) signals. However, existing trains only have magnetic steel over-phase function or ATP over-phase function, and cannot hot-switch over-phase process. Therefore, how to realize the over-phase control of trains is the key to realizing cross-line operation of trains, and it is an issue that cannot be ignored in the process of realizing the coordinated development of existing railways and passenger dedicated lines. Summary of the invention
[0005] In view of this, the present invention proposes a train over-phase control method and system, which solves the problem that the train cannot over-phase when traveling across the line.
[0006] On the one hand, an embodiment of the present invention provides a train over-phase control method, characterized in that the method includes: Sensing a first ground over-phase signal based on a plurality of over-phase sensors on the train; In response to the over-phase sensor sensing a first ground over-phase signal, the over-phase sensor determines an over-phase sub-mode to be executed in the automatic over-phase mode based on the over-phase sensor sensing the signal; The opening and closing of the circuit breaker in the process of passing through the phase separation zone is controlled based on the determined over-phase sub-mode.
[0007] In some embodiments, the automatic over-phasing mode includes a first over-phasing sub-mode and a second over-phasing sub-mode; In the case where the determined over-phase sub-mode is the first over-phase sub-mode, controlling the opening and closing of the circuit breaker in the process of passing through the phase separation zone based on the determined over-phase sub-mode includes: Before the train reaches the phase separation area, the circuit breaker is controlled to be opened according to the running status of the train, and the opened circuit breaker is controlled to be closed after the train passes through the phase separation area.
[0008] In some implementations, before the train reaches the phase separation area, controlling the circuit breaker to disconnect according to the running state of the train includes: When the train is in the coasting state, the circuit breaker is disconnected according to the preset breakpoint control; When the train is not in the idling state, the unloading slope is calculated according to the preset distance and the current vehicle speed, and the force output by the power vehicle is unloaded based on the calculated unloading slope. The circuit breaker is controlled to open according to the force unloading situation and the sensing situation of the second ground over-phase signal by the over-phase sensor that senses the first ground over-phase signal.
[0009] In some embodiments, according to the force unloading condition and the induction condition of the second ground over-phase signal by the over-phase sensor that senses the first ground over-phase signal, controlling the circuit breaker to open includes: When the force is unloaded to zero and the over-phase sensor that senses the first ground over-phase signal does not sense the second ground over-phase signal, controlling the circuit breaker to open; When the over-phase sensor that senses the first ground over-phase signal does not sense the second ground over-phase signal and the force is not unloaded to zero, the force is unloaded to zero according to the first preset unloading slope, and the circuit breaker is controlled to open at a preset time after the force is unloaded to zero.
[0010] In some embodiments, controlling the open circuit breaker to close after the train passes through the phase separation zone includes: According to the sensing condition of the grid voltage by the grid voltage transformer and the sensing condition of the third ground over-phase signal by the over-phase sensor that senses the first ground over-phase signal, the opened circuit breaker is controlled to close.
[0011] In some embodiments, according to the sensing condition of the grid voltage by the grid voltage transformer and the sensing condition of the third ground over-phase signal by the over-phase sensor that senses the first ground over-phase signal, controlling the open circuit breaker to close includes: When the grid voltage transformer senses grid voltage interruption, and the grid voltage after interruption recovers to the voltage threshold, and the over-phase sensor that senses the first ground over-phase signal senses the third ground over-phase signal, the disconnected circuit breaker is controlled to close; When the grid voltage transformer senses a grid voltage interruption, but the grid voltage after the interruption has not recovered to the voltage threshold, and the over-phase sensor that senses the first ground over-phase signal senses the third ground over-phase signal, a first prompt signal is output to manually open and then close the circuit breaker.
[0012] In some embodiments, when the determined over-phase sub-mode is the second over-phase sub-mode, controlling the opening and closing of the circuit breaker in the process of passing through the phase separation zone based on the determined over-phase sub-mode includes: The circuit breaker is controlled to open according to the sending of the over-phase signal by the over-phase sensor that senses the first ground over-phase signal and the sensing of the fourth ground over-phase signal by other over-phase sensors.
[0013] In some embodiments, according to the sending of the over-phase signal by the over-phase sensor that senses the first ground over-phase signal and the sensing of the fourth ground over-phase signal by other over-phase sensors, controlling the circuit breaker to disconnect includes: When the over-phase sensor that senses the first ground over-phase signal sends out an over-phase signal, and other over-phase sensors do not sense the fourth ground over-phase signal, the force output by the power vehicle is unloaded to zero within a preset time, and when the force is unloaded to zero, the circuit breaker is controlled to disconnect.
[0014] In some embodiments, according to the sending of the over-phase signal by the over-phase sensor that senses the first ground over-phase signal and the sensing of the fourth ground over-phase signal by other over-phase sensors, controlling the circuit breaker to disconnect includes: When the over-phase sensor that senses the first ground over-phase signal does not send out an over-phase signal, and other over-phase sensors sense the fourth ground over-phase signal, the force output by the power vehicle is unloaded to zero according to the preset unloading slope, and the circuit breaker is controlled to open at a preset time after the force is unloaded to zero.
[0015] On the other hand, an embodiment of the present invention further provides a train over-phase control system, the train over-phase control system comprising: An automatic over-phase device, the automatic over-phase device comprising a plurality of over-phase sensors for sensing a first ground over-phase signal; A control unit, wherein an automatic over-phase mode is configured in the control unit, and the automatic over-phase mode includes a first over-phase sub-mode and a second over-phase sub-mode; The control unit is configured to: in response to an over-phase sensor sensing a first ground over-phase signal, determine an over-phase sub-mode that needs to be executed in the automatic over-phase mode based on the over-phase sensor sensing the signal; and control the opening and closing of the circuit breaker in the process of passing through the phase zone based on the determined over-phase sub-mode.
[0016] On the other hand, an embodiment of the present invention further provides a computer storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method of any of the above embodiments are executed.
[0017] The present invention has at least the following beneficial effects: The present invention provides a train over-phase control method and system. The train over-phase control method and system provided by the present invention can sense a first ground over-phase signal based on a plurality of over-phase sensors; in response to the over-phase sensor sensing the first ground over-phase signal, determine the over-phase sub-mode that needs to be executed in the automatic over-phase mode based on the over-phase sensor that senses the signal; thereby controlling the opening and closing of the circuit breaker in the process of passing through the phase separation zone based on the determined over-phase sub-mode, thereby realizing automatic over-phase control of the train, and avoiding mutual interference between different over-phase signals in the process of passing through the phase separation zone. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying creative work.
[0019] Figure 1 A schematic diagram of the structure of a train over-phase control system provided by an embodiment of the present invention; Figure 2 A schematic diagram of a control unit provided by an embodiment of the present invention; Figure 3 A flow chart of a train over-phase control method provided by an embodiment of the present invention; Figure 4 A flow chart of a train over-phase control method provided by an embodiment of the present invention; Figure 5 A flow chart of a train over-phase control method provided by an embodiment of the present invention. DETAILED DESCRIPTION
[0020] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.
[0021] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.
[0022] At present, existing lines use over-phase control units based on magnetic steel signals, and passenger dedicated lines mostly use over-phase control units based on ATP (Automatic Train Protection) signals. However, existing trains only have magnetic steel over-phase functions or ATP over-phase functions, and cannot hot-swap over-phase processes. Therefore, how to achieve cross-line over-phase of trains is the key to achieving cross-line operation of trains, and is an issue that cannot be ignored in the process of achieving the coordinated development of existing railways and passenger dedicated lines.
[0023] Taking the Fuxing power-centralized EMU as an example, the following introduces the problems encountered by the EMU when crossing the line.
[0024] Fuxing centralized power EMUs have gradually become the main model for passenger operation on existing lines with their flexible formation and high economy, and have been successively assigned to the locomotive depots of major railway bureaus. With the continuous improvement of speed levels and application requirements, the 200 km / h centralized power EMUs meet the cross-line application requirements of both existing lines and passenger dedicated lines. However, existing lines currently use over-phase control units based on magnetic steel signals, and passenger dedicated lines mostly use over-phase control units based on ATP signals for over-phase control. In order to achieve the coordinated development of existing lines and passenger dedicated lines, some lines also have two systems of magnetic steel and ground signals. However, the over-phase function of existing EMUs only has a single mode of magnetic steel over-phase or ATP over-phase, and cannot hot-swap the over-phase control process, which does not meet the application requirements of EMU cross-line operation.
[0025] In view of this, in order to solve the above technical problems, the present invention proposes a train over-phase control method and system. The train over-phase control method and system provided by the present invention can sense a first ground over-phase signal based on a plurality of over-phase sensors; in response to the over-phase sensor sensing the first ground over-phase signal, determine the over-phase sub-mode that needs to be executed in the automatic over-phase mode based on the over-phase sensor that senses the signal; thereby controlling the opening and closing of the circuit breaker in the process of passing through the phase separation zone based on the determined over-phase sub-mode, thereby realizing automatic over-phase control of the train, and avoiding mutual interference between different types of over-phase signals in the process of passing through the phase separation zone.
[0026] The present invention is described in detail below in conjunction with embodiments and drawings.
[0027] A first aspect of an embodiment of the present invention provides a train over-phase control system, which is applicable to trains, and in particular to trains running across lines. Running across lines means that the train can either run on an existing track and cross over to a passenger dedicated line, or run on a passenger dedicated line and cross over to an existing track.
[0028] like Figure 1As shown, the train phase-shifting control system 10 provided in the embodiment of the present invention may include: an automatic phase-shifting device 11 and a control unit 12 .
[0029] The automatic over-phase device 11 includes a plurality of over-phase sensors for sensing the first ground over-phase signal.
[0030] The control unit 12 is configured with an automatic over-phase mode, which includes a first over-phase sub-mode and a second over-phase sub-mode, wherein the control unit is configured to: in response to an over-phase sensor sensing a first ground over-phase signal, determine the over-phase sub-mode that needs to be executed in the automatic over-phase mode based on the over-phase sensor sensing the signal; and control the opening and closing of the circuit breaker in the process of passing through the phase zone based on the determined over-phase sub-mode.
[0031] Specifically, the types of several over-phase sensors can be divided into two categories, one is a magnetic steel sensor and the other is an ATP sensor. Different types of over-phase sensors sense different first ground over-phase signals. The magnetic steel sensor senses the ground magnetic steel signal. The ATP sensor senses the ground ATP signal.
[0032] Several over-phase sensors refer to one or more ATP sensors and one or more magnetic steel sensors that can be configured on the train. When the train is running, the corresponding ATP sensors and magnetic steel sensors are activated to work according to the actual working scene of the train. For the convenience of description, the over-phase sensors mentioned in the embodiments of the present invention are all over-phase sensors that have been activated and operated.
[0033] The automatic over-phase mode may include multiple over-phase sub-modes. One over-phase sub-mode corresponds to a type of over-phase sensor. In a specific implementation, the automatic over-phase mode may include a first over-phase sub-mode and a second over-phase sub-mode. The first over-phase sub-mode may correspond to a magnetic steel sensor or an ATP sensor, and the second over-phase sub-mode may correspond to a magnetic steel sensor or an ATP sensor, and the first over-phase sub-mode and the second over-phase sub-mode correspond to different types of sensors. For example, in the case where the first over-phase sub-mode corresponds to a magnetic steel sensor, the second over-phase sub-mode corresponds to an ATP sensor. In the case where the first over-phase sub-mode corresponds to an ATP sensor, the second over-phase sub-mode may correspond to a magnetic steel sensor. For the sake of ease of description in the following embodiments, the sub-mode corresponding to the ATP sensor is referred to as the ATP over-phase sub-mode, and the sub-mode corresponding to the magnetic steel sensor is referred to as the magnetic steel over-phase sub-mode.
[0034] In a specific implementation, the automatic phase-shifting device includes a magnetic steel sensor and an ATP sensor. Taking the magnetic steel and ATP devices installed on the train track at a distance before the phase-shifting area as an example, the phase-shifting process of the train is explained.
[0035] In one example, the ATP sensor senses the ground ATP signal emitted by the ATP device on the train track. The ATP sensor sensing the ground ATP signal means that the train is about to enter the phase separation area. After the ATP sensor senses the ground ATP signal, it generates an ATP selection signal and sends it to the control unit. At this time, the magnetic steel sensor has not sensed the ground magnetic steel signal.
[0036] After the control unit receives the ATP selection signal from the ATP sensor, it configures the automatic over-phase mode to the ATP over-phase sub-mode according to the received ATP selection signal, and then controls the opening and closing of the circuit breaker during the train passing through the phase separation area according to the execution logic of the ATP over-phase sub-mode.
[0037] In the ATP over-phase mode, when the train is passing through the over-phase area, the signals sent by the magnetic steel sensor can be fully shielded or selectively shielded according to actual needs to prevent mutual interference between different types of ground over-phase signals.
[0038] In one example, the magnetic steel sensor senses the ground magnetic steel signal emitted by the magnetic steel on the train track. The magnetic steel sensor sensing the ground magnetic steel signal means that the train is about to enter the phase separation area. After the magnetic steel sensor senses the ground magnetic steel signal, it generates a magnetic steel warning signal and sends it to the control unit. At this time, the ATP sensor has not sensed the ground ATP signal.
[0039] After the control unit receives the magnetic steel warning signal sent by the magnetic steel sensor, it configures the automatic over-phase mode to the magnetic steel over-phase sub-mode according to the received magnetic steel warning signal, and then controls the opening and closing of the circuit breaker during the train passing through the phase separation area according to the execution logic of the magnetic steel over-phase sub-mode.
[0040] In the magnetic steel over-phase mode, when the train is passing through the phase area, the signals sent by the ATP sensor are completely shielded to prevent mutual interference between different types of ground over-phase signals.
[0041] In the embodiment of the present invention, the ground magnetic steel signal and the ground ATP signal are detected by the magnetic steel sensor and the ATP sensor respectively. After receiving the ground magnetic steel signal, the magnetic steel sensor can generate a corresponding magnetic steel over-phase signal and send it to the control unit. After receiving the ground ATP signal, the ATP sensor can generate a corresponding ATP over-phase signal and send it to the control unit. The control unit executes the corresponding over-phase sub-mode according to the over-phase signal received first, in accordance with the principle of first detection and first execution, so as to control the train to pass through the over-phase area under the configured over-phase sub-mode, thereby realizing automatic over-phase control of the train running across the line, and avoiding mutual interference between different over-phase signals in the process of passing through the phase area.
[0042] In some embodiments, Figure 2 As shown, the present invention is Figure 1 The control unit 12 shown is not only configured with an automatic over-phase mode, but also with a magnetic steel over-phase mode and an ATP over-phase mode. The automatic over-phase mode is configured as the default mode, and the control unit defaults to the automatic over-phase mode after startup or restart. The magnetic steel over-phase mode and the ATP over-phase mode can be selected as needed. The execution logic of the magnetic steel over-phase mode and the magnetic steel over-phase sub-mode is the same, and the execution logic of the ATP over-phase mode and the ATP over-phase sub-mode is the same.
[0043] It should be noted that the transition phase process of the magnetic steel transition phase mode and the magnetic steel transition phase sub-mode in the automatic transition phase mode is the same, and the transition phase process of the ATP transition phase mode and the ATP transition phase sub-mode in the automatic transition phase mode is the same. Therefore, the transition phase process of the magnetic steel transition phase mode and the ATP transition phase mode will not be repeated here.
[0044] In some embodiments, the train may include a control car and a power car, and the automatic over-phase device and control unit of the train over-phase control system may be arranged in the control car.
[0045] The control car is used to control the train to pass through the phase zone, and the power car is used to output the force to the coupled train. The force can include traction and braking force.
[0046] In some embodiments, the control unit 12 is further configured with a synchronous over-phase mode and an independent over-phase mode. The synchronous over-phase mode is set by default, and the setting is retained when the power is turned off. When the independent over-phase mode is set, the display prompts "Independent over-phase mode activated".
[0047] The synchronous over-phase mode and the independent over-phase mode are applicable to the magnetic steel over-phase sub-mode at the same time.
[0048] Only the synchronous over-phase mode is applicable in the ATP over-phase mode. The independent over-phase mode is invalid in the ATP over-phase mode and is only valid in the magnetic steel over-phase mode.
[0049] It should be noted that the train in the embodiment of the present invention can be a single train or a train set formed by coupling multiple trains. Each train includes a control car and a power car. One of the trains is set as the master control car of the train set, and the other trains are set as slave control cars. The control unit on the master control car is the master control unit, and the control unit on the slave control car is the slave control unit. The following takes the train consisting of multiple trains, in which the magnetic steel sensor in the automatic over-phase device of the train over-phase system located in the master control car first senses the ground magnetic steel over-phase signal as an example to explain the synchronous over-phase mode and the independent over-phase mode.
[0050] Example 1: The train set is in synchronous over-phase mode.
[0051] The magnetic steel sensor located in the master control car of the train group first senses the ground magnetic steel over-phase signal, and generates a magnetic steel warning signal based on the signal and sends it to the master control unit. After receiving the magnetic steel warning signal, the master control unit simultaneously sends a circuit breaker disconnection instruction to all power cars in the train, thereby controlling all power cars to disconnect the main breaker. After the train group passes through the phase separation area, the master control car and the slave control car independently close the main circuit breaker according to their respective over-phase logic.
[0052] Example 2: The train set is in independent over-phase mode.
[0053] The master control unit of the master control vehicle and the slave control unit of the slave control vehicle independently send circuit breaker opening instructions to their corresponding power vehicles according to the magnetic steel warning signals they receive, thereby controlling the circuit breaker to open, and pass through the phase separation area according to their respective phase-separation processes. After passing through the phase separation area, the master control vehicle and the slave control vehicle independently send circuit breaker closing instructions to their corresponding power vehicles, thereby controlling the circuit breaker to close.
[0054] Based on the same inventive concept, according to another aspect of the present invention, an embodiment of the present invention further provides a train over-phase control method.
[0055] The train over-phase control method provided in the embodiment of the present invention can be applied to the present invention as follows: Figure 1 The train shown. Figure 3 As shown, the train over-phase control method is executed by a control unit of the train, and the train over-phase control method may include S30~S32.
[0056] S30 , sensing a first ground over-phase signal based on a plurality of over-phase sensors on the train.
[0057] The first ground over-phase signal may be a ground magnetic steel signal or a ground ATP signal, depending on the over-phase sensor that senses the signal.
[0058] S31 . In response to an over-phase sensor sensing a first ground over-phase signal, the over-phase sensor determines an over-phase sub-mode to be executed in the automatic over-phase mode based on the sensed signal.
[0059] For example, the over-phase sensor that senses the first ground over-phase signal may be an ATP sensor. After the ATP sensor senses the ground ATP signal, it generates an ATP selection signal and sends it to the control unit.
[0060] For example, the over-phase sensor that senses the first ground over-phase signal may also be a magnetic steel sensor. After the magnetic steel sensor senses the ground magnetic steel signal, it generates a magnetic steel warning signal and sends it to the control unit.
[0061] The control unit executes the corresponding over-phase sub-mode according to the first ground over-phase signal received first, in accordance with the principle of first detection first execution.
[0062] In the over-phase sub-mode corresponding to an over-phase sensor, the control unit can selectively shield or completely shield the signals sent by other types of over-phase sensors to prevent mutual interference between different types of ground over-phase signals.
[0063] S32. Control the opening and closing of the circuit breaker in the process of passing through the phase separation zone based on the determined over-phase separation sub-mode.
[0064] Before passing through the phase separation area, the circuit breaker is controlled to disconnect, thereby preventing the train from passing through the phase separation area with power on, which would bring safety risks.
[0065] In the embodiment of the present invention, the ground magnetic steel signal and the ground ATP signal are detected by the magnetic steel sensor and the ATP sensor respectively. After receiving the ground magnetic steel signal, the magnetic steel sensor can generate a corresponding magnetic steel over-phase signal and send it to the control unit. After receiving the ground ATP signal, the ATP sensor can generate a corresponding ATP over-phase signal and send it to the control unit. The control unit executes the corresponding over-phase sub-mode according to the over-phase signal received first, in accordance with the principle of first detection and first execution, so as to control the train to pass through the over-phase area under the configured over-phase sub-mode, thereby realizing automatic over-phase control of the train running across the line, and avoiding mutual interference between different over-phase signals in the process of passing through the phase area.
[0066] In some embodiments, the automatic over-phase mode includes a first over-phase sub-mode and a second over-phase sub-mode. When the determined over-phase sub-mode is the first over-phase sub-mode, controlling the opening and closing of the circuit breaker during the process of passing through the phase separation zone based on the determined over-phase sub-mode may include: controlling the circuit breaker to open according to the running state of the train before the train reaches the phase separation zone, and controlling the opened circuit breaker to close after the train passes through the phase separation zone.
[0067] For ease of description, in the embodiment of the present invention, the first over-phase sub-mode corresponds to the magnetic steel over-phase sub-mode of the magnetic steel sensor, and the second over-phase sub-mode corresponds to the ATP over-phase sub-mode of the ATP sensor.
[0068] It should be noted that the circuit breaker in the embodiment of the present invention refers to the main circuit breaker on the train. When the train enters the phase separation area, since the phase separation area is a power-free area, in order to avoid phase-to-phase short circuit or other power supply accidents in the power-free section, the main circuit breaker needs to be disconnected before the train enters the phase separation area.
[0069] In some embodiments, before the train reaches the phase separation area, the circuit breaker is controlled to open according to the operating status of the train, which may include: when the train is in an idling state, the circuit breaker is controlled to open according to a preset breakpoint; when the train is not in an idling state, the unloading slope is calculated according to a preset distance and a current vehicle speed, and the force output by the power vehicle is unloaded based on the calculated unloading slope, and the circuit breaker is controlled to open according to the force unloading situation and the sensing situation of the second ground over-phase signal by the over-phase sensor that senses the first ground over-phase signal.
[0070] The running state of the train may include a traction state, a braking state, a coasting state, etc. The embodiment of the present invention can automatically control the circuit breaker to disconnect according to different running states of the train.
[0071] Coasting refers to a running state in which the train moves forward by its own gravity or other external forces (such as a ramp). In this state, the locomotive does not apply air brakes or use traction motors, and only relies on the inertia of the train or external conditions to push the train forward.
[0072] When the train is in coasting state, the power car no longer outputs force and only needs to control the circuit breaker to disconnect according to the preset breaking point.
[0073] The preset breakpoint is a preset circuit breaker disconnection point, for example, 5m, 10m, 15m or 20m away from the phase separation zone, etc., which is not specifically limited here.
[0074] In a specific implementation, when the control unit detects that the train is in an idling state, it controls the circuit breaker to be disconnected by sending a disconnection instruction to the central control unit located in the power car. After receiving the disconnection instruction, the central control unit disconnects the circuit breaker.
[0075] In some embodiments, controlling the circuit breaker to open according to the force unloading condition and the sensing condition of the second ground over-phase signal by the over-phase sensor that senses the first ground over-phase signal may include: controlling the circuit breaker to open when the force is unloaded to zero and the over-phase sensor that senses the first ground over-phase signal does not sense the second ground over-phase signal; unloading the force to zero according to a first preset unloading slope when the over-phase sensor that senses the first ground over-phase signal does not sense the second ground over-phase signal and the force is not unloaded to zero, and controlling the circuit breaker to open at a preset time after the force is unloaded to zero.
[0076] The magnetic steel sensor can generate different magnetic steel over-phase signals after sensing the ground magnetic steel signals at different points according to the different magnetic steel setting positions on the train track. The second ground over-phase signal in the embodiment of the present invention refers to the magnetic steel forced break signal.
[0077] The forced disconnection signal is generated when the magnetic steel sensor senses the ground magnetic steel signal at the forced disconnection point. Normally, after receiving the magnetic steel warning signal, the control unit will calculate the unloading slope according to the preset distance and current vehicle speed, and unload the force output by the power car based on the calculated unloading slope, so as to ensure that the force is unloaded to 0 before the train enters the phase separation area, so as to disconnect the circuit breaker.
[0078] However, due to the influence of train speed, road conditions or other factors, the unloading force calculated according to the unloading slope may fail to reach zero at the forced disconnection point. At this time, in order to avoid the train being energized excessively in the phase area and causing safety risks, a forced disconnection point is set. After the train reaches the forced disconnection point, the magnetic steel sensor will sense a ground magnetic steel signal, and generate a magnetic steel forced disconnection signal based on the sensed ground magnetic steel signal and the position of the sensed ground magnetic steel signal, and send the generated magnetic steel forced disconnection signal to the control unit. After the control unit receives the forced break signal, it unloads the force again according to the preset unloading slope. The preset unloading slope is usually greater than the calculated unloading slope, for example, 10kN / s, 20kN / s, 40kN / s, 50kN / s, 60kN / s, 80kN / s, 100kN / s, 110kN / s, 120kN / s, etc., which are not specifically limited here, so as to ensure that the force acting on the train can be unloaded to zero in time, thereby ensuring that the circuit breaker is disconnected before the train enters the phase separation area.
[0079] In some embodiments, controlling the opening of a circuit breaker to close after the train passes through a phase separation zone may include: controlling the opening of a circuit breaker to close according to a sensing condition of the grid voltage by a grid voltage transformer and a sensing condition of a third ground over-phase signal by an over-phase sensor that senses a first ground over-phase signal.
[0080] In some embodiments, controlling the closing of an open circuit breaker according to the sensing of the grid voltage by the grid voltage transformer and the sensing of the third ground over-phase signal by the over-phase sensor that senses the first ground over-phase signal may include: controlling the closing of the open circuit breaker when the grid voltage transformer senses a grid voltage interruption, and the grid voltage after the interruption recovers to the voltage threshold, and the over-phase sensor that senses the first ground over-phase signal senses the third ground over-phase signal; outputting a first prompt signal to manually open and then close the circuit breaker when the grid voltage transformer senses a grid voltage interruption, but the grid voltage after the interruption does not recover to the voltage threshold, and the over-phase sensor that senses the first ground over-phase signal senses the third ground over-phase signal.
[0081] After the train enters the phase separation area, the grid voltage transformer can detect that the grid voltage of the train drops below a certain voltage threshold, thereby outputting a grid voltage interruption signal to the control unit. The voltage threshold can be set based on experience, for example, 5000V, 5500V or 6000V, etc., and is not specifically limited here.
[0082] After the train passes through the phase separation area, the grid voltage transformer can detect that the interrupted grid voltage has recovered to above a certain voltage threshold, thereby outputting a grid voltage recovery signal to the control unit. The voltage threshold can be set based on experience, for example, 16.9kV, 17kV or 17.1kV, etc., and is not specifically limited here.
[0083] The magnetic steel sensor can generate different magnetic steel over-phase signals after sensing the ground magnetic steel signals at different points according to the different magnetic steel setting positions on the train track. The third ground over-phase signal in the embodiment of the present invention refers to the magnetic steel recovery signal, indicating that the train has passed the phase separation area. Specifically, after the train passes the phase separation area, the magnetic steel sensor detects the ground magnetic steel signal at the magnetic steel recovery point, generates a magnetic steel recovery signal based on the ground magnetic steel signal detected at this point, and sends it to the control unit.
[0084] In a specific implementation, the grid voltage transformer senses a grid voltage interruption, generates a grid voltage interruption signal and sends it to the control unit.
[0085] In a specific implementation, the grid voltage transformer senses that the grid voltage recovers to above the voltage threshold, generates a grid voltage interruption signal and sends it to the control unit.
[0086] In a specific implementation, the magnetic steel sensor senses the magnetic steel signal at the magnetic steel recovery point, generates a magnetic steel recovery signal and sends it to the control unit.
[0087] In a specific implementation, the control unit selects a closing mode for the disconnected circuit breaker according to the situation of receiving a network voltage interruption signal, a magnetic steel recovery signal, and a network voltage recovery signal. If a network voltage interruption signal, a magnetic steel recovery signal, and a network voltage recovery signal are received, the disconnected circuit breaker is automatically controlled to close, thereby restoring the power of the train in time. However, if a network voltage recovery signal is not received after receiving a network voltage interruption signal and a magnetic steel recovery signal, the main breaker is prohibited from automatically closing, and a first prompt signal is output instead.
[0088] The above methods of opening and closing the circuit breaker are all through electronic switches, that is, a software implementation method. The circuit breaker is still in a closed state in hardware. The software opening and closing of the circuit breaker can be fed back to the central control unit of the train through the circuit breaker feedback signal, and the hardware opening and closing of the circuit breaker can be fed back to the central control unit through the circuit breaker switch signal.
[0089] In a specific implementation, the first prompt signal can be displayed through a display device, and after the conductor sees the displayed prompt signal, he will manually disconnect the circuit breaker. Then he will manually determine whether the circuit breaker closing condition is met. The circuit breaker closing condition can be whether the phase separation area has been passed, thereby preventing the circuit breaker from directly closing after detecting the magnetic steel recovery signal, causing the train to pass through the phase separation area with power, causing a safety accident.
[0090] If it is determined that the circuit breaker closing condition is met after human judgment, the circuit breaker is closed by the key switch on the circuit breaker. At this time, if the circuit breaker key signal is detected to be closed, the circuit breaker closing command is output to control the circuit breaker closing in software mode.
[0091] In a specific implementation, after the first prompt signal is sent, if it is detected that the circuit breaker switch signal is in the disconnected state, the automatic phase-shifting process is terminated, or the automatic phase-shifting mode is directly exited.
[0092] In a specific implementation, after the train passes through the phase separation zone, the ground magnetic steel signal sensed by the magnetic steel sensor is ignored within a certain distance (for example, 500m, 600m, 700m or 1000m, etc.), thereby avoiding signal interference.
[0093] In some embodiments, when the determined over-phase sub-mode is the second over-phase sub-mode, controlling the opening and closing of the circuit breaker in the process of passing through the phase zone based on the determined over-phase sub-mode may include: controlling the circuit breaker to open according to the sending of the over-phase signal by the over-phase sensor that senses the first ground over-phase signal, and the sensing of the fourth ground over-phase signal by other over-phase sensors.
[0094] In a specific implementation, the second over-phase sub-mode is an ATP over-phase sub-mode corresponding to the ATP sensor. At this time, the first ground over-phase signal is a ground ATP signal. In the ATP over-phase sub-mode, the control unit shields other magnetic steel signals except the magnetic steel strong breaking signal sent from the magnetic steel sensor.
[0095] After sensing the ground ATP signal, the ATP sensor generates an ATP over-phase signal and sends it to the control unit. The ATP over-phase signal can be a high or low level signal, which can be set to be valid at a high level and invalid at a low level.
[0096] The control unit can control the circuit breaker to disconnect based on the reception of the ATP over-phase signal and the magnetic steel forced breaking signal, so as to disconnect the circuit breaker in time when the ATP sensor or ATP device fails or malfunctions, so as to prevent the train from passing through the phase separation area with power, which would bring safety risks.
[0097] In some embodiments, controlling the circuit breaker to disconnect based on the sending of the over-phase signal by the over-phase sensor that senses the first ground over-phase signal and the sensing of the fourth ground over-phase signal by other over-phase sensors may include: when the over-phase sensor that senses the first ground over-phase signal sends an over-phase signal and other over-phase sensors do not sense the fourth ground over-phase signal, unloading the force output by the power vehicle to zero within a preset time, and controlling the circuit breaker to disconnect when the force is unloaded to zero.
[0098] In some embodiments, the circuit breaker is controlled to be disconnected according to the sending of the over-phase signal by the over-phase sensor that senses the first ground over-phase signal, and the sensing of the fourth ground over-phase signal by other over-phase sensors, and also includes: when the over-phase sensor that senses the first ground over-phase signal does not send an over-phase signal, and the other over-phase sensors sense the fourth ground over-phase signal, the force output by the power vehicle is unloaded to zero according to a preset unloading slope, and the circuit breaker is controlled to be disconnected at a preset time after the force is unloaded to zero.
[0099] In the embodiment of the present invention, the fourth ground over-phase signal is a magnetic steel forced breaking signal issued by the magnetic steel sensor.
[0100] In a specific implementation, after receiving the over-phase selection signal for a period of time, the ATP sensor generates a high-level over-phase signal and sends it to the control unit. After the control unit receives the high-level over-phase signal, the central control unit first sends a disconnection command. After the central control unit receives the disconnection command, the force output by the power vehicle is unloaded to zero within a preset time. The preset time can be set according to actual usage needs, for example, 4s, 5s, 6s or 8s, etc., which is not specifically limited here.
[0101] In a specific implementation, after receiving the forced disconnection signal, if the control unit still does not receive the high-level over-phase signal sent by the ATP sensor, it will send a forced disconnection command to the central control unit. After receiving the forced disconnection command, the central control unit will unload the force output by the power car to zero according to the preset unloading slope, and control the circuit breaker to disconnect at a preset time after the force is unloaded to zero, so as to prevent the train from passing through the phase separation area with power, which may bring safety risks. The preset unloading slope can be 40kN / s, 50kN / s, 70kN / s, 80kN / s, 100kN / s, etc., which is not specifically limited here, and is used to ensure that the force can be unloaded to zero in time, so as to ensure that the circuit breaker is disconnected before the train enters the phase separation area.
[0102] Through this embodiment, the magnetic steel forced breaking signal and the ATP over-phase signal can be combined to perform over-phase control of the train, so that when the ATP sensor or ATP device fails or malfunctions, the circuit breaker can be disconnected in time to prevent the train from passing through the phase separation area with power, thereby causing safety risks.
[0103] The train phase separation method according to an embodiment of the present invention is specifically introduced below through multiple examples.
[0104] Example 1 Reference Figure 4 A train phase separation method provided by an embodiment of the present invention may include the following steps: S40, in the automatic over-phase mode, receiving a magnetic steel advance signal, and not receiving an ATP selection signal before receiving the magnetic steel advance signal.
[0105] When the control unit first receives the magnetic steel warning signal, it starts the magnetic steel over-phase sub-mode, and the display screen prompts "magnetic steel over-phase start". S41. Determine whether the train is coasting.
[0106] S42: If the train has coasted, the main circuit breaker is disconnected according to the preset breakpoint control.
[0107] When the magnetic steel warning signal is received, the locomotive or EMU using the AC power supply system has been coasting, and the main circuit breaker is controlled to disconnect according to the preset breakpoint.
[0108] S43. If the train is not coasting, calculate the unloading slope and unload the force according to the calculated unloading slope.
[0109] When the magnetic steel warning signal is received, the locomotive or EMU with AC power supply system does not coast. The unloading slope is calculated in real time according to the preset distance and current driving speed, and the power car is controlled to unload the traction force / electric braking force to ensure that the traction / electric braking force is unloaded to zero 10m before the strong breaking signal is reached, and then the main circuit breaker is automatically disconnected.
[0110] S44, receiving a forced break signal and determining whether the traction / braking force is zero.
[0111] When the control unit receives the forced disconnection signal, it detects the degree of unloading of the traction force / braking force. If it has been unloaded to zero, it waits to enter the phase separation area. If it has not been unloaded to zero, it executes step S45.
[0112] S45, unloading the force at a preset slope, and disconnecting the circuit breaker at a preset time when the force is unloaded to zero.
[0113] The central control unit is controlled to issue an unloading slope of 100kN / s to unload the traction / braking force, and the main circuit breaker is disconnected after 0.4S.
[0114] S46. According to the grid voltage interruption signal, the magnetic steel recovery signal and the grid voltage recovery signal, the disconnected circuit breaker is controlled to close.
[0115] When the train passes through the phase separation area, if the grid voltage is interrupted and restored, the central control unit will automatically close the main circuit breaker, and automatically output traction / electric braking force according to the traction handle position or set speed, and display "Passing the phase separation, passed successfully" on the display unit.
[0116] When the grid voltage is not interrupted and restored, but the magnetic steel restoration signal is detected, the automatic closing of the main breaker is prohibited, and the display prompts "Over-phase, manually close the main breaker". The driver can unlock the over-phase process by manually disconnecting the main breaker. If the main breaker closing conditions are met, the driver can close the main breaker by giving a close main breaker command.
[0117] During the automatic phase-shifting process, if it is necessary to manually interrupt the automatic phase-shifting process, the automatic phase-shifting process can be terminated by the main control vehicle's main disconnection command. When the pantograph is lowered, the automatic phase-shifting process is automatically terminated.
[0118] The embodiment of the present invention can realize the operation of existing lines and passenger dedicated lines, and can also realize the automatic switching and failure protection of over-phase between different systems. Without manual intervention, it can intelligently identify the line conditions and realize the non-sensing control of over-phase, which greatly reduces the operating burden of the driver. At the same time, the complete protection strategy also avoids the risk of live phase intrusion, which reduces the safety risk.
[0119] Example 2 Reference Figure 5 A train phase separation method provided by an embodiment of the present invention may include the following steps: S51. In the automatic over-phase mode, an over-phase selection signal is received, and no magnetic steel warning signal is received before the over-phase selection signal is received.
[0120] When the main control unit detects the ATP over-phase selection signal first, it is transmitted to the entire train through the train-level bus, and the "ATP over-phase start" prompt is continuously displayed. After the ATP over-phase mode is activated, the magnetic steel warning signal issued by other modes is shielded, and the over-phase signal of other modes is not allowed to interfere with the current over-phase control process. However, the recognition of the over-phase forced disconnection signal is maintained to ensure that when the ATP over-phase fails, the main circuit breaker can still be forcibly disconnected to avoid live phase intrusion.
[0121] S52. Monitor the reception status of the strong disconnection signal and the excessive phase separation signal.
[0122] S53: When an over-phase signal is received and a forced disconnection signal is not received, the force output by the power vehicle is unloaded to zero within a preset time, and when the force is unloaded to zero, the circuit breaker is controlled to disconnect.
[0123] The ATP mutual inductor will calculate the time when the train arrives at the phase separation area based on the real-time speed and distance, and send the phase separation signal to the control unit 6 seconds in advance, and ensure that the main control car will be withdrawn after driving out of the phase separation area for a full train formation of the maximum length, so that the entire train can pass through the power-free area completely. The control unit forwards the phase separation signal to the central control unit. The central control unit receives a valid ATP phase separation command, and the traction / braking force is unloaded and reduced to 0kN within 4s. When the current torque value is zero, it maintains coasting for 4s and then disconnects the main disconnection.
[0124] S54: when a forced disconnection signal is received and an over-phase separation signal is not received, the force is unloaded to zero according to a preset unloading slope, and the circuit breaker is controlled to disconnect at a preset time after the force is unloaded to zero.
[0125] If after the "over-phase selection" instruction is detected, the "over-phase command" is not detected but the forced signal is detected, the torque is quickly unloaded at a slope of 100kN / s, and the main circuit breaker is disconnected after 0.4s.
[0126] S55. According to the reception of the grid voltage interruption signal, the magnetic steel recovery signal and the grid voltage recovery signal, the disconnected circuit breaker is controlled to close.
[0127] When the power car passes through the phase separation area, if the grid voltage drops and then recovers to the normal value (17.5kV-31kV) correctly, the main circuit breaker of the car will be closed. If the grid voltage recovery process is not detected after the "over-phase command" signal is cancelled, the prompt "grid voltage has not been restored" will be displayed.
[0128] The scheme of the present invention can meet the operation requirements of both existing lines and passenger dedicated lines, and can also realize automatic switching of over-phase and failure protection when the train runs across lines. There is no need for manual intervention by the driver, and it can intelligently identify the line conditions and realize senseless control of over-phase, which greatly reduces the operating burden of the train driver. At the same time, the complete protection strategy also avoids the risk of live phase intrusion, and has good technical and economic benefits.
[0129] Based on the same inventive concept, according to another aspect of the present invention, an embodiment of the present invention further provides a computer storage medium, which stores a computer program that performs the above method when executed by a processor.
[0130] Finally, it should be noted that a person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, the storage medium of the program can be a disk, an optical disk, a read-only storage memory (ROM) or a random access memory (RAM), etc. The above-mentioned computer program embodiments can achieve the same or similar effects as the corresponding above-mentioned any method embodiments.
[0131] It will also be appreciated by those skilled in the art that various exemplary logic blocks, modules, circuits and algorithm steps described in conjunction with the disclosure herein can be implemented as electronic hardware, computer software or a combination of the two. In order to clearly illustrate this interchangeability of hardware and software, a general description has been given to the functions of various schematic components, blocks, modules, circuits and steps. Whether this function is implemented as software or hardware depends on specific applications and the design constraints imposed on the entire system. Those skilled in the art can implement the function in various ways for each specific application, but this implementation decision should not be interpreted as causing a departure from the disclosed scope of the embodiments of the present invention.
[0132] The above are exemplary embodiments disclosed in the present invention, but it should be noted that various changes and modifications may be made without departing from the scope of the embodiments disclosed in the present invention as defined in the claims. The functions, steps and / or actions of the method claims according to the disclosed embodiments described herein do not need to be performed in any particular order. The serial numbers of the embodiments disclosed in the above embodiments of the present invention are for description only and do not represent the advantages and disadvantages of the embodiments. In addition, although the elements disclosed in the embodiments of the present invention may be described or required in individual form, they may also be understood as multiple unless explicitly limited to the singular.
[0133] It should be understood that, as used herein, the singular forms "a", "an" are intended to include the plural forms as well, unless the context clearly supports an exception. It should also be understood that, as used herein, "and / or" refers to any and all possible combinations including one or more of the associated listed items.
[0134] A person skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the disclosure of the embodiments of the present invention (including the claims) is limited to these examples; under the concept of the embodiments of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and there are many other changes in different aspects of the above embodiments of the present invention, which are not provided in detail for the sake of simplicity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.
Claims
1. A train over-phase control method, characterized in that: The method comprises: Sensing a first ground over-phase signal based on a plurality of over-phase sensors on the train; In response to the over-phase sensor sensing a first ground over-phase signal, the over-phase sensor determines an over-phase sub-mode to be executed in the automatic over-phase mode based on the over-phase sensor sensing the signal; The opening and closing of the circuit breaker in the process of passing through the phase separation zone is controlled based on the determined over-phase sub-mode.
2. The method according to claim 1, characterized in that The automatic over-phase mode includes a first over-phase sub-mode and a second over-phase sub-mode; In the case where the determined over-phase sub-mode is the first over-phase sub-mode, controlling the opening and closing of the circuit breaker in the process of passing through the phase separation zone based on the determined over-phase sub-mode includes: Before the train arrives at the phase separation zone, the circuit breaker is controlled to be opened according to the running state of the train, and after the train passes through the phase separation zone, the opened circuit breaker is controlled to be closed.
3. The method according to claim 2, characterized in that Before the train reaches the phase separation area, controlling the circuit breaker to disconnect according to the running state of the train includes: When the train is in a coasting state, the circuit breaker is controlled to be disconnected according to a preset breakpoint; When the train is not in a coasting state, the unloading slope is calculated according to the preset distance and the current vehicle speed, and the force output by the power vehicle is unloaded based on the calculated unloading slope. The circuit breaker is controlled to open according to the force unloading situation and the sensing situation of the second ground over-phase signal by the over-phase sensor that senses the first ground over-phase signal.
4. The method according to claim 3, characterized in that According to the unloading condition of the applied force and the induction condition of the second ground over-phase signal by the over-phase sensor that senses the first ground over-phase signal, the circuit breaker is controlled to be disconnected, comprising: When the force is unloaded to zero and the over-phase sensor that senses the first ground over-phase signal does not sense the second ground over-phase signal, controlling the circuit breaker to open; When the over-phase sensor that senses the first ground over-phase signal does not sense the second ground over-phase signal and the force is not unloaded to zero, the force is unloaded to zero according to a first preset unloading slope, and the circuit breaker is controlled to open at a preset time after the force is unloaded to zero.
5. The method according to claim 2, characterized in that: The controlling of closing the disconnected circuit breaker after the train passes through the phase separation zone comprises: According to the sensing condition of the grid voltage by the grid voltage transformer and the sensing condition of the third ground over-phase signal by the over-phase sensor that senses the first ground over-phase signal, the opened circuit breaker is controlled to close.
6. The method according to claim 5, characterized in that The method of controlling the disconnected circuit breaker to close according to the sensing condition of the grid voltage by the grid voltage transformer and the sensing condition of the third ground over-phase signal by the over-phase sensor that senses the first ground over-phase signal comprises: When the grid voltage transformer senses a grid voltage interruption, and the grid voltage after the interruption recovers to the voltage threshold, and the over-phase sensor that senses the first ground over-phase signal senses the third ground over-phase signal, controlling the disconnected circuit breaker to close; When the grid voltage transformer senses a grid voltage interruption, but the grid voltage after the interruption has not recovered to the voltage threshold, and the over-phase sensor that senses the first ground over-phase signal senses the third ground over-phase signal, a first prompt signal is output to prompt manual opening and closing of the circuit breaker.
7. The method according to claim 2, characterized in that In the case that the determined over-phase sub-mode is the second over-phase sub-mode, controlling the opening and closing of the circuit breaker in the process of passing through the phase separation zone based on the determined over-phase sub-mode includes: The circuit breaker is controlled to open according to the sending of the over-phase signal by the over-phase sensor that senses the first ground over-phase signal and the sensing of the fourth ground over-phase signal by other over-phase sensors.
8. The method according to claim 7, characterized in that The method of controlling the circuit breaker to disconnect according to the sending condition of the over-phase signal by the over-phase sensor that senses the first ground over-phase signal and the sensing condition of the fourth ground over-phase signal by other over-phase sensors comprises: When the over-phase sensor that senses the first ground over-phase signal sends out an over-phase signal, and other over-phase sensors do not sense the fourth ground over-phase signal, the force output by the power vehicle is unloaded to zero within a preset time, and when the force is unloaded to zero, the circuit breaker is controlled to open.
9. The method according to claim 7, characterized in that: The method of controlling the circuit breaker to disconnect according to the sending condition of the over-phase signal by the over-phase sensor that senses the first ground over-phase signal and the sensing condition of the fourth ground over-phase signal by other over-phase sensors comprises: When the over-phase sensor that senses the first ground over-phase signal does not send out an over-phase signal, and other over-phase sensors sense the fourth ground over-phase signal, the force output by the power vehicle is unloaded to zero according to the preset unloading slope, and the circuit breaker is controlled to open at a preset time after the force is unloaded to zero.
10. A train over-phase control system, characterized in that: include: An automatic over-phase device, the automatic over-phase device comprising a plurality of over-phase sensors for sensing a first ground over-phase signal; A control unit, wherein the control unit is configured with an automatic over-phase mode, wherein the automatic over-phase mode includes a first over-phase sub-mode and a second over-phase sub-mode; The control unit is configured to: in response to an over-phase sensor sensing a first ground over-phase signal, determine an over-phase sub-mode that needs to be executed in the automatic over-phase mode based on the over-phase sensor sensing the signal; and control the opening and closing of the circuit breaker in the process of passing through the phase zone based on the determined over-phase sub-mode.