阅读说明：本技术 一种电力动车组过分相控制方法 (Passing phase control method for electric multiple unit ) 是由 李哲 刘忠烨 周庆强 郝凤荣 张晓宝 吕世伟 于 2019-09-25 设计创作，主要内容包括：本发明公开了一种电力动车组过分相控制方法,主控车通过微机系统从监控系统实时接收监控信息,并将所述监控信息发送给从控车,并结合路况信息和运行信息进行过分相控制；其中,所述监控信息包括分相区信息。本发明的技术方案中,主控车通过微机系统从监控系统实时接收监控信息,并将所述监控信息发送给从控车,并结合路况信息和运行信息进行过分相控制,可以准确获知动车组与预告、强迫信号之间准确距离；避免了动车组为重载、车列较长或者分相区坡度较大时,可能导致的动车组在分相区内停车。(The invention discloses an electric multiple unit neutral section passing control method, wherein a master control vehicle receives monitoring information from a monitoring system in real time through a microcomputer system, sends the monitoring information to a slave control vehicle, and performs neutral section passing control by combining road condition information and operation information; wherein the monitoring information comprises phase separation zone information. In the technical scheme of the invention, the master control vehicle receives monitoring information from the monitoring system in real time through the microcomputer system, sends the monitoring information to the slave control vehicle, and performs passing phase control by combining road condition information and running information, so that the accurate distance between the motor train unit and advance notice and force signals can be accurately obtained; the motor train unit is prevented from stopping in the phase separation area possibly caused by heavy load, long train or large gradient of the phase separation area.)

1. The passing neutral section control method of the electric multiple unit is characterized in that a master control vehicle receives monitoring information from a monitoring system in real time through a microcomputer system, sends the monitoring information to a slave control vehicle, and carries out passing neutral section control by combining road condition information and operation information;

wherein the monitoring information comprises phase separation zone information.

2. The method according to claim 1, characterized in that the over-phase control comprises a manual over-phase control, a fully automatic over-phase control and a semi-automatic over-phase control, wherein,

the semi-automatic passing neutral section control comprises the following steps: after the semi-automatic neutral section passing button is manually controlled, the main breaker is disconnected; passing through a dead zone; after the master control vehicle and/or the slave control vehicle receive the network voltage recovery signal, the master switch is automatically closed;

the full-automatic passing neutral section control comprises the following steps:

after the master control vehicle and/or the slave control vehicle receive a phase splitting starting advance notice signal or a phase splitting starting forcing signal, the master switch is switched off;

passing through a dead zone;

after receiving a network voltage recovery signal and/or a split-phase end advance notice signal or a split-phase end forcing signal, automatically closing the main breaker;

the manual passing neutral section control comprises the following steps: manually controlling the main breaker to be disconnected; passing through a dead zone; and manually controlling the main breaker to close.

3. The method according to claim 2, wherein the over-phase separation control comprises that after a master control vehicle and/or a slave control vehicle receives a phase separation starting forecast signal, the load shedding is started, and after the moment is unloaded to be 0 within the moment load shedding distance, a current transformer blocks a pulse and opens a contactor, and a master breaker is opened;

wherein the torque load shedding distance is smaller than the distance between the phase separation start advance notice signal and the phase separation start forcing signal.

4. The method according to claim 3, characterized in that the moment load shedding speed is corrected in real time by the distance between the master control vehicle and/or the slave control vehicle and the split phase start forcing signal during the load shedding process.

5. The method according to claim 4, wherein the running distance of the motor train unit is calculated in the load shedding process, and the running distance of the motor train unit is the sum of the running distance, the current running distance and the current acceleration running distance;

and the current acceleration running distance is a correction distance calculated according to the current running state of the motor train unit and the road condition information.

6. The method of claim 1, wherein the road condition information and the operation information include a gross weight, a number of vehicles, a machine length, a speed, a gradient, a speed limit, a moment;

the passing phase control includes: the sticking coefficient is corrected during the running of the vehicle, and the highest allowable speed and the lowest allowable speed when entering the phase separation area are calculated before passing the phase separation area.

7. The method of claim 1, wherein the over-phase control comprises: calculating whether the current marshalling information has interphase short circuit according to the marshalling mode, and informing a worker of the calculation result, wherein the worker selects the pantograph lowering mode according to the calculation result;

the pantograph mode comprises a non-pantograph mode, an automatic pantograph mode and a manual pantograph mode.

8. The method of claim 1, wherein the over-phase control comprises a main breaker control comprising:

a simultaneous-break main breaker mode in which the breakers of the master control car and the slave control car are simultaneously broken,

a master-off mode in which the master control car and the slave control car respectively turn off the master circuit breaker, and,

and the automatic main breaker breaking mode is automatically controlled by a microcomputer system.

9. The method according to claim 1, wherein the passing neutral control comprises passing neutral mode control, and the passing neutral mode control comprises an automatic passing neutral mode and a non-automatic passing neutral mode, wherein in the automatic passing neutral mode, the master control vehicle obtains a moment unloading distance before entering a neutral section, and a highest allowable speed and a lowest allowable speed when entering the neutral section according to monitoring information.

10. The method according to claim 1, wherein when the master vehicle cannot receive the monitoring information from the monitoring system in real time through the microcomputer system, the master vehicle and the slave vehicle receive the ground magnetic steel information or the radio frequency positioning information through the split-phase acquisition device to acquire split-phase signals.

11. The method as claimed in claim 3, wherein the master vehicle and/or the slave vehicle receives no phase separation start advance notice signal, and when receiving the phase separation start forcing signal, the current transformer is unloaded to 0 with a predetermined slope, and the master breaker is opened.

12. The method of claim 1, wherein the over-phase control further comprises a master fault protection control, the master fault protection control comprising:

the monitored distance between the second forecast signal and the adjacent previous forecast signal is a first distance, and the time is a first time;

the distance between the second force signal and the adjacent front force signal is monitored to be a second distance, and the time is a second time;

the distance between the monitored semi-automatic neutral-section passing received network voltage recovery signal and the next adjacent forecast signal is a third distance, and the time is third time;

the distance between the monitored semi-automatic neutral section received network voltage recovery signal and the adjacent subsequent forced signal is a fourth distance, and the time is a fourth time;

when the first distance is greater than the first preset distance and/or the first time is greater than the first preset time, judging that the second forecast signal is effective, otherwise, judging that the second forecast signal is ineffective;

when the second distance is greater than the second forcing distance and/or the second time is greater than the second forcing time, judging that the second forcing signal is effective, otherwise, judging that the second forcing signal is ineffective;

when the third distance is greater than a third preset distance and/or the third time is greater than a third preset time, judging that the signal reported by the next adjacent forecast is effective, otherwise, judging that the signal reported by the next adjacent forecast is ineffective;

and when the fourth distance is greater than the fourth forcing distance and/or the fourth time is greater than the fourth forcing time, judging that the following adjacent forcing signal is effective, otherwise, judging that the following adjacent forcing signal is ineffective.

Technical Field

The invention relates to the technical field of segmented phase-change power supply, in particular to a passing neutral-phase control method for an electric motor train unit.

Background

At present, a domestic railway high-voltage contact network adopts a sectional phase-changing power supply mode, and a power supply area with sections separated is called a phase-splitting area. In the phase separation region, the high-voltage contact network generally reduces the network voltage and adjusts the phase, in order to ensure the safety of high-voltage equipment of the motor train unit and prevent the high-voltage contact network from being short-circuited, the motor train unit needs to disconnect a main circuit breaker when passing through the phase separation region, and meanwhile, any two pantographs cannot be bridged on two sections of high-voltage contact networks in different phase separation regions.

Disclosure of Invention

In order to solve the technical problem, the embodiment of the invention provides a control method for passing neutral section of an electric multiple unit.

The embodiment of the invention discloses a passing neutral section control method of an electric motor train unit, wherein a master control train receives monitoring information from a monitoring system in real time through a microcomputer system, sends the monitoring information to a slave control train, and carries out passing neutral section control by combining road condition information and running information; the monitoring information comprises phase separation zone information, automatic control of passing through phase separation is achieved through a monitoring system and information transmission, road condition information and operation information are comprehensively considered, and safety and reliability of the motor train unit are guaranteed.

In this embodiment, the microcomputer system of the main control vehicle receives monitoring information in real time from the monitoring system, the monitoring information includes split-phase zone signals, kilometers of the split-phase start advance signal, the split-phase start forcing signal, the split-phase end advance signal and the split-phase end forcing signal are obtained according to the distance between the advance signal and the forcing signal and the information such as the length of the dead zone, and the distances between the electric motor train unit and the four signals are calculated in real time according to the kilometers of the motor train unit. The split-phase start forcing signal is a backup of the split-phase start advance notice signal; the phase separation end forcing signal is a backup of the phase separation end prediction signal.

Further, the passing phase control comprises manual passing phase control, full-automatic passing phase control and semi-automatic passing phase control, wherein,

the semi-automatic passing neutral section control comprises the following steps: after the semi-automatic neutral section passing button is manually controlled, the main breaker is disconnected; passing through a dead zone; after the master control vehicle and/or the slave control vehicle receive the network voltage recovery signal, the master switch is automatically closed;

the full-automatic passing neutral section control comprises the following steps:

after the master control vehicle and/or the slave control vehicle receive a phase splitting starting advance notice signal or a phase splitting starting forcing signal, the master switch is switched off;

passing through a dead zone;

and after receiving a network voltage recovery signal and/or a split-phase end advance notice signal or a split-phase end forcing signal, the main breaker is automatically closed.

The manual neutral-section passing control comprises the following steps: manually controlling the main breaker to be disconnected; passing through a dead zone; and manually controlling the main breaker to close.

Further, the passing phase control includes: after the master control car and/or the slave control car receive the split-phase starting forenotice signal, the load shedding is started, and after the moment is unloaded to be 0 within the moment load shedding distance, the current transformer blocks the pulse and breaks the contactor, and the main breaker is disconnected;

wherein the torque load shedding distance is smaller than the distance between the phase separation start advance notice signal and the phase separation start forcing signal.

Further, the moment load shedding speed is corrected in real time through the distance between the main control vehicle and/or the auxiliary control vehicle and the split-phase starting forcing signal in the load shedding process.

Further, calculating the running distance of the motor train unit in the load shedding process, wherein the running distance of the motor train unit is the sum of the running distance, the current running distance and the current acceleration running distance;

and the current acceleration running distance is a correction distance calculated according to the current running state of the motor train unit and the road condition information. In other words, when the running distance after receiving the advance notice signal is calculated, the running state of the motor train unit at the nth acquisition time can be traction, electric power or inertia, and the road condition information can be uphill, downhill or flat, so that the running distance (correction distance) of the nth acceleration is increased in the calculated running distance.

Further, the road condition information and the operation information comprise total weight, vehicle number, machine length, speed, gradient, speed limit value and moment; wherein the locomotive length refers to the train length of a whole train set;

the passing phase control includes: the sticking coefficient is corrected during the running of the vehicle, and the highest allowable speed and the lowest allowable speed when entering the phase separation area are calculated before passing the phase separation area. And the changed minimum allowable speed and the maximum allowable speed can be prompted to staff such as crew members through a display screen.

Further, the passing phase control includes: calculating whether the current marshalling information has an interphase short circuit according to the marshalling mode, informing a worker of a calculation result, and selecting a pantograph lowering mode by the worker according to the calculation result to avoid sending the interphase short circuit; wherein the pantograph mode comprises a non-pantograph mode, an automatic pantograph mode and a manual pantograph mode. When the calculated marshalling information may cause interphase short circuit or a microcomputer cannot obtain the current marshalling mode, prompting crew members to select an automatic pantograph lowering mode to avoid the fault of the interphase short circuit; otherwise, prompting the crew member to select a non-pantograph lowering mode. The marshalling is not changed in the running process of the motor train unit, so that whether the pantograph lowering mode is selected or not is not required to be switched repeatedly.

Further, the passing phase-split control includes a main breaker control that is turned off, the main breaker control including:

a simultaneous-break main breaker mode in which the breakers of the master control car and the slave control car are simultaneously broken,

a master-off mode in which the master control car and the slave control car respectively turn off the master circuit breaker, and,

and the automatic main breaker breaking mode is automatically controlled by a microcomputer system.

The method is arranged for a split-phase road section where the motor train unit is likely to stop in the split-phase area, and under the mode of automatically breaking the main circuit breaker, when the area of the split-phase area is a straight road, the gradient is small, the number of vehicles and the length of the motor train unit are normal, and the whole train of motor train unit is not heavy-load, the microcomputer control system automatically selects the main control train and the auxiliary control train to break the main circuit breaker and pass through the split phase at the same time; when the section of the phase separation area is an ascending slope with a larger gradient, more vehicles and longer machine length, or the whole train of motor train units is heavy-load, the microcomputer control system automatically selects the master control vehicle and the slave control vehicle to respectively break the master circuit breaker and pass through the neutral section. The crew can also manually select the mode of simultaneously switching off the main circuit breakers through the split phase or respectively switching off the main circuit breakers through the split phase according to experience, so that the condition that the motor car stops in the split phase area to wait for rescue is avoided.

Further, the passing neutral section control comprises passing neutral section mode control, the passing neutral section mode control comprises an automatic passing neutral section mode and a non-automatic passing neutral section mode, in the automatic passing neutral section mode, the master control vehicle obtains a moment load shedding distance before entering a neutral section and a highest allowable speed and a lowest allowable speed when entering the neutral section according to monitoring information, and the monitoring information comprises kilometer standard data provided by a monitoring system.

Further, when the master control vehicle cannot receive monitoring information from the monitoring system in real time through the microcomputer system, the master control vehicle and the slave control vehicle receive ground magnetic steel information or radio frequency positioning information through the split-phase acquisition devices to acquire split-phase signals.

Further, the master control vehicle and/or the slave control vehicle do not receive a phase splitting starting forenotice signal, and when a phase splitting starting forcing signal is received, the current transformer is unloaded to 0 at a preset slope, and the main breaker is disconnected. Preferably, the predetermined slope is the maximum slope that can be achieved.

Further, the neutral section passing control further comprises a main break protection control, and the main break protection control comprises:

the monitored distance between the second forecast signal and the adjacent previous forecast signal is a first distance, and the time is a first time;

the distance between the second force signal and the adjacent front force signal is monitored to be a second distance, and the time is a second time;

the distance between the monitored semi-automatic neutral-section passing received network voltage recovery signal and the next adjacent forecast signal is a third distance, and the time is third time;

the distance between the monitored semi-automatic neutral section received network voltage recovery signal and the adjacent subsequent forced signal is a fourth distance, and the time is a fourth time;

when the first distance is greater than the first preset distance and/or the first time is greater than the first preset time, judging that the second forecast signal is effective, otherwise, judging that the second forecast signal is ineffective;

and judging that the second forcing signal is effective when the second distance is greater than the second forcing distance and/or the second time is greater than the second forcing time, and otherwise, judging that the second forcing signal is ineffective.

When the third distance is greater than a third preset distance and/or the third time is greater than a third preset time, judging that the signal reported by the next adjacent forecast is effective, otherwise, judging that the signal reported by the next adjacent forecast is ineffective;

and when the fourth distance is greater than the fourth forcing distance and/or the fourth time is greater than the fourth forcing time, judging that the following adjacent forcing signal is effective, otherwise, judging that the following adjacent forcing signal is ineffective.

By adopting the technical scheme, the invention at least has the following beneficial effects:

in the technical scheme of the invention, the master control vehicle receives monitoring information from the monitoring system in real time through the microcomputer system, sends the monitoring information to the slave control vehicle, and performs passing phase control by combining road condition information and running information, so that the accurate distance between the motor train unit and advance notice and force signals can be accurately obtained; the motor train unit is prevented from stopping in the phase separation area possibly caused by heavy load, long train or large gradient of the phase separation area.

By the main break protection control, the condition that the main break is not closed immediately through a dead zone after the main break is not just disconnected in the same phase separation zone is avoided; the condition that different phase separation areas are immediately disconnected just after the main breaker is closed is also avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic network topology diagram of a control method for passing neutral section of an electric motor train unit according to an embodiment of the invention;

FIG. 2 is a flow chart of obtaining monitored phase separation information according to one embodiment of the present invention;

FIG. 3 is a flow chart of a split phase optimization load shedding control according to an embodiment of the present invention;

FIG. 4 is a flow chart of the pantograph mode selection of an embodiment of the present invention;

FIG. 5 is a flow chart of a fully automatic passing neutral mode selection according to an embodiment of the present invention;

FIG. 6 is a flow chart of phase separation load shedding distance selection according to an embodiment of the present invention;

fig. 7 is a flow chart of the main breaker control mode selection according to an embodiment of the present invention;

FIG. 8 is a flowchart of an in-library test according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention are described in further detail with reference to the accompanying drawings.

It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it should be noted that "first" and "second" are merely for convenience of description and should not be construed as limitations of the embodiments of the present invention, and they are not described in any more detail in the following embodiments.

In the embodiment of the invention, as shown in fig. 1, the master control car is the first section of the motor train unit in the running direction, and crews operate the motor train unit in a whole train in the master control car; the slave train control means the second train section to the last train section in the running direction of the motor train unit. The main control vehicle receives monitoring information from the monitoring system in real time through the microcomputer system, sends the monitoring information to the auxiliary control vehicle, and performs neutral-phase control by combining road condition information and operation information; the monitoring information comprises phase separation zone information, automatic control of passing through phase separation is achieved through a monitoring system and information transmission, road condition information and operation information are comprehensively considered, and safety and reliability of the motor train unit are guaranteed. The distance between the advance notice signal and the forcing signal is the phase separation load shedding distance. The phase separation load shedding distance is equal to the distance between the forcing signal and the advance notice signal. The number of the vehicles is the number of the master control vehicles and the slave control vehicles, and the machine length is the total length of the master control vehicles and the slave control vehicles.