WO2022041530A1

WO2022041530A1 - Automatic neutral-section passing method and system, on-board network controller, and vehicle

Info

Publication number: WO2022041530A1
Application number: PCT/CN2020/132128
Authority: WO
Inventors: 陈三猛; 周安德; 陈爱军; 谢红兵; 龙宇航
Original assignee: 中车株洲电力机车有限公司
Priority date: 2020-08-26
Filing date: 2020-11-27
Publication date: 2022-03-03
Also published as: CN112026595A

Abstract

An automatic neutral-section passing method and system, an on-board network controller, and a vehicle. Automatic neutral-section passing of a vehicle can be realized without adding any new hardware device, and there is no need to provide additional ground and/or on-board hardware, thus saving on the costs of on-board and/or ground hardware, and the costs of construction and subsequent whole-lifecycle maintenance thereof; and in an automatic neutral-section passing process, a transfer link of an intermediate device is omitted, thus effectively improving the reliability of the automatic neutral-section passing process, avoiding a load intrusion into a neutral section, and avoiding damage to the vehicle and a pantograph and overhead contact system device.

Description

Automatic over-phase method, system, in-vehicle network controller, and vehicle

technical field

The invention relates to the field of rail transportation, in particular to an automatic over-phase method, a system, a vehicle-mounted network controller and a vehicle.

Background technique

In the electrified traction section, the traction catenary adopts single-phase power frequency AC power supply. In order to balance the three-phase load of the power system and improve the utilization rate of the power grid, the electrified railway catenary is required to adopt segmented commutation power supply. In order to prevent short circuit between phases, the adjacent phases are separated by air or insulator, which is called "electric phase separation". When the rail transit vehicle is over-phased, it is necessary to adopt a suitable over-phase method. Currently, there are common vehicle-mounted automatic over-phase, driver manual over-phase, ATP over-phase and ground transition automatic over-phase mode. At present, these over-phase methods all require additional ground and/or on-board hardware, which will greatly increase vehicle costs and reduce reliability; if only manual over-phase methods are used, it will increase the work intensity of drivers and passengers. and affect operational efficiency. How to save the manufacturing cost of rail transit, reduce the work intensity of drivers and passengers, and improve operational efficiency is a technical problem that needs to be solved urgently by those skilled in the art.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a method, system, on-board network controller and vehicle for automatic phase transition in view of the deficiencies of the prior art, which can realize the automatic phase transition of the vehicle without adding any hardware equipment.

In order to solve the above-mentioned technical problems, the technical scheme adopted in the present invention is: a kind of automatic over-phase method, comprising:

S1. Calculate the distance S between the vehicle and the position of the sub-phase area and/or between the position with a specific distance relationship with the sub-phase area; and/or calculate the vehicle to reach the position of the sub-phase area and/or have a specific distance from the sub-phase area the time T required for the position of the relation;

S2. Compare S with a preset distance L, when the difference between S and L is less than the distance threshold (the distance threshold can be set to 500m), control the unloading of the vehicle, and break the main circuit breaker through the phase separation zone; and/or Comparing the time T with the preset time T1, when the difference between T and T1 is less than the time threshold (the time threshold can be set to 100s), the vehicle is controlled to unload, and the main circuit breaker is disconnected to pass through the phase separation zone.

The over-phase method of the present invention can be completed without the aid of additional over-phase equipment, saves the manufacturing cost of rail transit, reduces the work intensity of drivers and passengers, improves over-phase reliability, and thus improves vehicle operation efficiency.

In step S1, the calculation formula of the distance S between the vehicle and the position of the phase-splitting area and/or the position having a specific distance relationship with the phase-splitting area is:

Among them, t ₀ and t ₁ are the start time and the end time, respectively; v is the real-time speed of the vehicle between the start time and the end time.

The present invention integrates the speed between the start time and the end time, so as to calculate the distance between the vehicle and the position of the sub-phase area and/or between the position with a specific distance relationship with the sub-phase area, the calculation result is accurate, and the amount of calculation little.

The real-time speed is the real-time average value of the speed source speed signal on the vehicle. The real-time average value in the present invention refers to the average value of each speed source signal adopted at a certain moment. Setting the real-time speed as the real-time average of the speed source speed signal on the vehicle ensures a more accurate speed calculation and thus a more accurate distance value.

The present invention can also calculate the distance S between the vehicle and the position of the sub-phase area and/or the position with a specific distance relationship with the sub-phase area by the following method: In step S1, between the vehicle and the position of the sub-phase area and/or The calculation formula of the distance S between the positions that have a specific distance relationship with the phase separation zone is:

Among them, V _i is the speed of the vehicle at time i; t _j is the time; m, n are the speed step number and the time step number, respectively.

In the above calculation formula, the distance value can be calculated more accurately by adjusting the number of time steps. The number of steps can be set according to processor performance and actual use needs.

In the present invention, setting the speed step is to obtain the optimum speed value within a certain period of time (eg 1s) (the optimum speed value can be selected according to actual use requirements).

In order to facilitate the real-time detection of excessive phase, after step S2, it also includes:

S3, when the single-phase AC grid voltage is detected again, control the vehicle to close the main circuit breaker, and return to step S1.

The present invention also provides an automatic transition phase system, which includes:

Speed collection device, used for real-time collection of vehicle running speed;

In-vehicle network controller, for calculating the distance S between the vehicle and the position of the phase-splitting area and/or the position having a specific distance relationship with the phase-splitting area in real time according to the operating speed; and/or calculating the arrival of the vehicle in the phase-splitting area The time T required for the position and/or the position with a specific distance relationship with the phase separation zone; compare S with the preset distance L, when the difference between S and L is less than the distance threshold (for example, 500m), control the vehicle Unloading, breaking the main circuit breaker through the phase separation zone; and/or comparing the time T and the preset time T1, when the difference between T and T1 is less than the time threshold (for example, 100s), control the vehicle to unload and break the main circuit breaker through the phase separation zone.

The invention utilizes the original speed acquisition device and network controller on the vehicle to realize automatic over-phase without adding additional hardware equipment, improves the reliability of over-phase and thus improves the operation efficiency of the vehicle.

The in-vehicle network controller is further configured to perform the following operations: when the single-phase AC network voltage is detected and it is confirmed that the vehicle has passed through the phase separation zone, the vehicle is controlled to close the main circuit breaker.

The in-vehicle network controller is also used for controlling the display to display the distance and/or the time required for the vehicle to reach the position of the phase separation zone before the excessive phase.

In the present invention, the display shows the vehicle's distance from the phase-splitting area and/or the distance to the location with a specific positional relationship with the phase-splitting area and/or the time required to arrive at the location of the phase-splitting area before the excessive phase is displayed, so that the driver and passengers can know the relevant information in time. information to further improve operational reliability.

The in-vehicle network controller communicates with the positioning system; the positioning system monitors the vehicle position in real time, and sends the position signal directly or after conversion to the in-vehicle network controller for automatic over-phase control or calibration (described here). Control refers to the direct use of the position signal of the vehicle positioning system and/or the converted time and other information to carry out automatic phase separation on the vehicle; calibration refers to comparing the position information of the vehicle positioning system with the speed measurement information of other speed measurement systems to verify the vehicle Whether the speed signal system or the speed measuring device is distorted and discarding the distorted data (that is, eliminating the abnormal signal of the speed source) to improve the calculation accuracy of the vehicle position; Weighted average to reduce distance calculation error).

As an inventive concept, the present invention also provides an in-vehicle network controller, which is configured to execute the steps of the above method of the present invention.

As an inventive concept, the present invention also provides a rail transit vehicle, which adopts the above-mentioned automatic transition phase system of the present invention.

Compared with the prior art, the present invention has the beneficial effects as follows: the present invention utilizes the on-board network control system already equipped in the rail vehicle, combined with the existing on-board speed measuring device, and presets the line over-phase position and/or with the phase-split. By comparing with other systems, it ensures that the rail vehicle can realize the automatic transition phase of the vehicle without additional ground and/or on-board hardware, which improves the reliability of the vehicle operation and reduces the operating time of the vehicle. The work intensity of the occupants improves the operating efficiency of the vehicle.

Description of drawings

Fig. 1 is the structural representation of the vehicle-mounted automatic phase splitting control system of the present invention;

Fig. 2 is the process principle block diagram of vehicle-mounted automatic over-phase transition of the present invention;

FIG. 3 is a flow chart of a transition process according to an embodiment of the present invention.

detailed description

1 is a schematic structural diagram of a vehicle-mounted automatic phase splitting control system according to an embodiment of the present invention, which is described in detail as follows:

The automatic over-phase control system includes: braking system speed signal or speed measuring device 1, setting interface 2, vehicle display interface 3, traction system speed signal or speed measuring device 4, vehicle network control system or controller 5, vehicle positioning system 6.

Vehicle-mounted speed signal system or speed measuring device 1: used to detect train speed, and send the speed signal directly or after conversion to the vehicle network control system as a control signal or reference signal for automatic over-phase control or calibration.

Setting interface 2: Through the vehicle display interface or the setting interface of other systems and maintenance software, the entry and test of the position between the over-phase positions and/or the position with a specific distance relationship with the split-phase area before the vehicle runs, when replacing or adding operating lines Set or adjust the time step, make time and/or distance automatic transition mode selection, etc. when problems occur before or during the process.

In-vehicle display interface or display device 3: The driver's display interface or other display setting interface of the in-vehicle network control system is used to carry out the excessive phase position and/or the position that has a specific distance relationship with the sub-phase area before the vehicle runs, when the operation line is replaced or added. Set or adjust the time step size, perform time and/or distance auto-phase mode selection, etc. before or during the entry and in case of problems during the test. At the same time, through the driver display interface of the in-vehicle network control system or the display interface of other systems, a certain distance and/or time before the excessive phase, prompting the driver that there is a split-phase zone ahead and/or reminding the driver of the minimum speed of the train passing through the split-phase zone, Keep the vehicle speed at the lowest automatic over-phase speed.

In-vehicle network control system or controller 4: The in-vehicle network control system or controller obtains the speed signals of the vehicle's traction system, braking system, signal and other systems directly or indirectly, and integrates the speed and time according to the time step distance. Calculate the distance from the vehicle to the fixed over-phase position point, and then divide the distance by the speed to obtain the time to the over-phase position point. At this time, compare the distance and/or time calculated by the on-board network control system or controller with the preset position and/or time of the start of the automatic overrun phase, when the train arrives at the preset automatic overrun phase start position S and/or time t When the on-board network control system or controller automatically controls the vehicle to unload and break the main circuit breaker to pass through the split-phase area, in order to ensure the safe passage of the vehicle through the split-phase area, the on-board network control system or controller will prohibit closing for a period of time and/or distance. Main circuit breaker, when the train passes through the phase separation area and detects the single-phase AC grid voltage again, the network control system or controller will automatically control the vehicle to close the main circuit breaker, re-tract the normal operation and exit the automatic over-phase mode.

Vehicle positioning system 5: It is used to detect the real-time position of the vehicle, and send the position signal directly or after conversion to the vehicle network control system or controller as a control signal or reference signal for automatic over-phase control or calibration, such as: The in-vehicle network control system or controller directly uses the position signal of the in-vehicle positioning system and/or the converted time and other information for in-vehicle automatic over-phase, and/or by comparing the position information of the in-vehicle positioning system with the speed measurement information of other speed measurement systems. By contrast, verify whether the on-board speed signal system or speed measuring device is distorted and discard the distorted data (that is, remove the abnormal signal of the speed source) to improve the calculation accuracy of the vehicle position, or compare the position information of the on-board positioning system with the on-board speed signal system and/or speed measurement. The position obtained by the device is calculated as a weighted average to reduce the position error.

As shown in Figure 2 and Figure 3, the present invention utilizes the on-board network control system already equipped on the rail vehicle, combined with the existing on-board speed measuring device, and realizes the automatic phase transition of the vehicle without adding any hardware equipment through an algorithm. The specific implementation process includes:

First of all, in the electrified traction section, the traction catenary adopts the single-phase power frequency AC power supply mode. In order to balance the three-phase load of the power system and improve the utilization rate of the power grid, generally every 20 to 40 kilometers of the position will set up "electrical phase separation area and The position of the phase separation area is also fixed. Therefore, the position of each "phase separation area" on the vehicle operation line and/or the position with a specific distance relationship with the phase separation area can be preset in the on-board network control system of the rail vehicle. .

Secondly, the traction system, braking system, signal system, etc. of the vehicle are equipped with various speed sensors to detect and monitor the speed of the vehicle in real time, and these speed values will also be transmitted to the vehicle network control system in real time. The distance is equal to the speed multiplied by Time S=V×t (S is the distance, V is the speed, and t is the time), and the distance is integrated according to the time step

and/or sum the distances by time step

The vehicle network control system can easily calculate the distance between the vehicle and the fixed position.

Finally, the distance calculated by the onboard network control system is compared with the position of the pre-designed line split-phase zone and/or the position with a specific distance relationship with the split-phase zone, when the train approaches the split-phase zone and/or has When the position of a specific distance relationship, the vehicle can be automatically unloaded and disconnected through the on-board network control system according to time and/or distance, and the main circuit breaker passes through the phase separation zone, at intervals of a period of time and/or distance, when the train passes through the phase separation zone and re-detected After the single-phase AC network voltage is applied, the network control system automatically controls the vehicle to close the main circuit breaker and re-tract the normal operation to realize the automatic over-phase of the vehicle.

In order to improve the safety, usability and reliability of the automatic over-phase scheme, first of all, because there are multiple speed signals provided by the traction system and the braking system, the network control system will analyze the speed source (the speed source in the present invention refers to the collected speed signal). devices, such as speed sensors around the vehicle, etc.) are compared and screened, and problem signals caused by idling, skidding and/or equipment failures are eliminated; secondly, the average value of the speed signals without problems is solved, so that the calculated speed is consistent with the actual vehicle speed. The speed is consistent, and the average value of the speed is to calculate the speed more accurately, so as to ensure that the calculation of the distance value is more accurate; in addition, the distance is corrected with the help of other positioning systems on the vehicle, such as the signal system and the positioning system of the network track inspection; finally If the above measures fail, the driver can also use the existing main circuit breaker on the vehicle or manually over-phase operation to ensure that the vehicle will not break into the phase-splitting area with load, preventing damage to the vehicle and pantograph equipment .

In order to ensure the applicability and scalability of the automatic over-phase scheme, a special over-phase design interface is designed on the driver display interface of the vehicle network control system or the display interface of other systems and maintenance software, which is used for over-phase position input, Adjust the time step size, select the phase mode according to time and/or distance, etc. Therefore, when the train needs to replace or add operating lines, the phase position information can be easily and quickly entered. It can be solved by adjusting the time step, time, distance, automatic over-phase mode, etc. Finally, through the driver display interface of the in-vehicle network control system or the display interface of other systems, a certain distance or time before the excessive phase is used, the driver is reminded that there is a split-phase zone ahead to control the speed of the vehicle to ensure that the vehicle will not stop at the split-phase due to low speed. Areas lead to rescue and other events that affect operational efficiency.

The present invention utilizes the existing on-board network control system of the rail vehicle, combined with the existing on-board speed measuring device, and can realize the automatic phase transition of the vehicle without adding any hardware equipment through the algorithm, and does not need to be equipped with additional ground and/or On-board hardware saves the cost of on-board and/or ground hardware hardware, construction and subsequent full-life-cycle maintenance. In the process of automatic over-phase, the transmission link of the intermediate equipment is saved, the reliability of the automatic over-phase process is effectively improved, and the load into the phase-separation area is avoided, causing damage to the vehicle and pantograph equipment.

Compared with the method of only using the driver's manual over-phase, the automatic over-phase scheme can reduce the work intensity of the drivers and passengers, and save the driver's reaction time in the whole process, which will improve the operating efficiency of the vehicle.

On the driver display interface of the in-vehicle network control system or the display interface of other systems and maintenance software, a special over-phase design interface is designed for over-phase position entry, time step adjustment, and over-phase mode selection according to time and/or distance. Etc., the newly added or adjusted phase-splitting position information can be easily entered, and when there is a deviation in the automatic over-phase during the test, it can be solved by adjusting the time step, the automatic over-phase method, etc.

The driver display interface of the in-vehicle network control system or the display interface of other systems can remind the driver that there is a split-phase zone ahead to control the speed of the vehicle at a distance and/or time before the excessive phase, so as to ensure that the vehicle will not stop in the split-phase zone due to low speed. Lead to rescue and other events affecting operational efficiency.

Claims

An automatic over-phase method, characterized in that, comprising:

S1. Calculate the distance S between the vehicle and the position of the sub-phase area and/or between the position with a specific distance relationship with the sub-phase area; and/or calculate the vehicle to reach the position of the sub-phase area and/or have a specific distance from the sub-phase area the time T required for the position of the relation;

S2. Comparing S with a preset distance L, when the difference between S and L is less than the distance threshold, control the unloading of the vehicle, and break the main circuit breaker to pass through the phase separation zone; and/or

Comparing the time T with the preset time T1, when the difference between T and T1 is less than the time threshold, the vehicle is controlled to unload, and the main circuit breaker is disconnected to pass through the phase separation zone.
The automatic over-phase-over-phase method according to claim 1, wherein in step S1, the calculation formula of the distance S between the vehicle and the position of the phase-separation area and/or between the positions having a specific distance relationship with the phase-separation area is: :

Among them, t 0 and t 1 are the start time and the end time, respectively; v is the real-time speed of the vehicle between the start time and the end time.
The method according to claim 2, characterized in that, in step S1, the real-time speed is the real-time average value of the speed source speed signal on the vehicle.
The automatic over-phase-over-phase method according to claim 1, wherein in step S1, the calculation formula of the distance S between the vehicle and the position of the phase-separation area and/or between the positions having a specific distance relationship with the phase-separation area is: :

Among them, V i is the speed of the vehicle at time i; t j is the time; m is the speed step number, and n is the time step number.
The automatic over-phase method according to any one of claims 1 to 4, characterized in that, after step S2, further comprising:

S3, when the single-phase AC grid voltage is detected again, control the vehicle to close the main circuit breaker, and return to step S1.
An automatic transition system, characterized in that it includes:

;

In-vehicle network controller for calculating the distance S between the vehicle and the location of the phase-splitting area and/or a position having a specific distance relationship with the phase-splitting area; and/or calculating the arrival of the vehicle at the location of the phase-splitting area and/or with The time T required for a position with a specific distance relationship; comparing S with a preset distance L, when the difference between S and L is less than the distance threshold, control the unloading of the vehicle and break the main circuit breaker through the phase separation zone; and /or by comparing the time T and the preset time T1, when the difference between T and T1 is less than the time threshold, the vehicle is controlled to unload, and the main circuit breaker is disconnected to pass through the phase separation zone.
The automatic over-phase splitting system according to claim 6, characterized in that, further comprising a speed collecting device for collecting the running speed of the vehicle in real time; the in-vehicle network controller is used for calculating the distance S in real time according to the running speed; and/or calculating time T.
The automatic over-phase system according to claim 6, wherein the on-board network controller is further configured to perform the following operation: when the single-phase AC grid voltage is detected, control the vehicle to close the main circuit breaker.
The automatic over-phase system according to claim 6, wherein the in-vehicle network controller is further configured to control the display to display the distance from the vehicle to the position of the phase-separation zone before the over-phase and/or the required distance to reach the position of the phase-separation zone. time.
The automatic over-phase splitting system according to claim 6, wherein the on-board network controller communicates with a positioning system; the positioning system monitors the vehicle position in real time, and sends the position signal to the on-board network control directly or after conversion controller for automatic over-phase control or calibration.
An in-vehicle network controller, characterized in that the in-vehicle network controller is configured to perform the steps of the method of one of claims 1-5.
A rail transit vehicle, characterized in that it adopts the automatic transition phase system described in any one of claims 6 to 10.