CN112230044A - Train and electric leakage detection method thereof, whole vehicle controller and traction control unit - Google Patents
Train and electric leakage detection method thereof, whole vehicle controller and traction control unit Download PDFInfo
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- CN112230044A CN112230044A CN201910577943.3A CN201910577943A CN112230044A CN 112230044 A CN112230044 A CN 112230044A CN 201910577943 A CN201910577943 A CN 201910577943A CN 112230044 A CN112230044 A CN 112230044A
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R19/145—Indicating the presence of current or voltage
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Abstract
The application provides a train and a detection method for electric leakage of the train, a vehicle control unit and a traction control unit, wherein the method comprises the following steps: recognizing the occurrence of electric leakage of the train; controlling a traction control unit in each carriage to perform high-voltage power-off isolation on the carriage where the traction control unit is located; sequentially sending leakage detection signals to the traction control units in each carriage so that the traction control units perform leakage detection on the carriages in which the traction control units are located; and aiming at each carriage, identifying whether the leakage signal sent by the traction control unit is received or not, and carrying out high-voltage power-off isolation on the carriage again when the leakage signal is received so as to realize the positioning of the leakage carriage and improve the maintenance efficiency.
Description
Technical Field
The invention relates to the technical field of trains, in particular to a train and a detection method of electric leakage of the train, a vehicle control unit and a traction control unit.
Background
In order to detect leakage of electricity in a train, in the related art, a diversion resistor is generally connected between a ground grid and a negative electrode of a dc traction system, so that leakage current can be detected when a fault such as a positive-electrode-to-ground short circuit or insulation reduction occurs in the dc traction system. However, the related art has problems in that the location of the electric leakage cannot be determined, the efficiency of maintenance or rescue is affected,
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the first objective of the present invention is to provide a method for detecting train leakage, so as to realize positioning of a leakage carriage and improve maintenance efficiency.
The second purpose of the invention is to provide another train leakage detection method.
The third purpose of the invention is to provide a vehicle control unit.
A fourth object of the invention is to propose a traction control unit.
A fifth object of the invention is to propose a vehicle.
In order to achieve the above object, an embodiment of a first aspect of the present invention provides a method for detecting train electric leakage, including: recognizing the occurrence of electric leakage of the train; controlling a traction control unit in each carriage to perform high-voltage power-off isolation on the carriage where the traction control unit is located; sequentially sending leakage detection signals to the traction control units in each carriage so that the traction control units perform leakage detection on the carriages in which the traction control units are located; and aiming at each carriage, identifying whether the leakage signal sent by the traction control unit is received or not, and carrying out high-voltage power-off isolation on the carriage again when the leakage signal is received.
According to an embodiment of the invention, before the identifying the train generates the electric leakage, the method further comprises: acquiring the leakage signal; identifying whether a power supply line leakage signal is received within a first preset time; if the power supply line electric leakage signal is received, determining that the power supply line has electric leakage; and if the power supply line electric leakage signal is not received, determining that the train has electric leakage.
According to an embodiment of the invention, before the identifying the train generates the electric leakage, the method further comprises: acquiring the leakage signal; identifying whether a train leakage signal is received within a second preset time; if the train electric leakage signal is received, determining that the train has electric leakage; and if the train electric leakage signal is not received, determining that the electric leakage occurs in the power supply line.
According to an embodiment of the present invention, the sequentially sending the leakage detection signal to the traction control unit in each car to enable the traction control unit to perform leakage detection on the car in which the traction control unit is located further includes: sending indication information for closing the negative relay to the traction control unit; judging whether a leakage signal sent by the traction control unit is received within a third preset time; if yes, the electric leakage of the compartment is determined.
According to an embodiment of the present invention, further comprising: and after the electric leakage detection is carried out on each carriage, the current residual power of the train is obtained, and when the residual power meets the power required by the continuous operation of the train, a power-on signal is sent to a traction control unit in the carriage without electric leakage so as to control the carriage without electric leakage to be powered on and operate.
According to the train electric leakage detection method provided by the embodiment of the invention, after the train is identified to have electric leakage, the electric leakage detection is sequentially carried out on each carriage, the carriage with the electric leakage can be accurately determined, and the carriage with the electric leakage is subjected to high-voltage power-off isolation according to the electric leakage detection result, so that the personal safety of passengers is ensured.
In order to achieve the above object, a second embodiment of the present invention provides another method for detecting a train leakage, including: receiving a leakage detection signal sent by the vehicle controller; and carrying out electric leakage detection on the carriage where the vehicle is located according to the electric leakage detection signal, and sending an electric leakage signal to the vehicle control unit when the current carriage is detected to be in electric leakage.
According to an embodiment of the present invention, the detecting a leakage of a train according to the leakage detection signal, and sending a leakage signal to the vehicle control unit when detecting that a current car is leaked, further includes: receiving indication information for controlling the closing of a negative relay, and controlling the closing of the negative relay; and when the voltage of the electric leakage sensor is identified to be greater than the preset voltage and lasting for a fourth preset time, sending the electric leakage signal to the vehicle control unit.
According to an embodiment of the present invention, further comprising: acquiring a power-on signal sent by the vehicle control unit to a carriage without electric leakage; and controlling the compartment without electric leakage to be electrified and operated.
According to the train electric leakage detection method provided by the embodiment of the invention, after an electric leakage detection signal sent by the vehicle control unit is received, the carriage where the vehicle control unit is located can be subjected to electric leakage detection, and the carriage where the vehicle control unit is located is subjected to high-voltage power-off isolation according to the command of the vehicle control unit so as to ensure the personal safety of passengers.
In order to achieve the above object, a vehicle control unit according to a third aspect of the present invention includes: the control module is used for identifying the occurrence of electric leakage of the train and controlling the traction control unit in each carriage to perform high-voltage power-off isolation on the carriage where the traction control unit is located; the sending module is used for sending electric leakage detection signals to the traction control units in each carriage in sequence so that the traction control units can detect the electric leakage of the carriages in which the traction control units are located; for each car, the control module is further configured to: and identifying whether the leakage signal sent by the traction control unit is received or not, and carrying out high-voltage power-off isolation on the carriage again when the leakage signal is received.
According to an embodiment of the present invention, the control module is further configured to: acquiring the leakage signal; identifying whether a power supply line leakage signal is received within a first preset time; if the power supply line electric leakage signal is received, determining that the power supply line has electric leakage; and if the power supply line electric leakage signal is not received, determining that the train has electric leakage.
According to an embodiment of the present invention, the control module is further configured to: acquiring the leakage signal; identifying whether a train leakage signal is received within a second preset time; if the train electric leakage signal is received, determining that the train has electric leakage; and if the train electric leakage signal is not received, determining that the electric leakage occurs in the power supply line.
According to an embodiment of the present invention, the sending module is further configured to: sending indication information for closing the negative relay to the traction control unit; the control module is further configured to: judging whether a leakage signal sent by the traction control unit is received within a second preset time; if yes, the electric leakage of the compartment is determined.
According to an embodiment of the invention, the control module is further configured to: and acquiring the current residual power of the train, and sending a power-on signal to a traction control unit in a carriage without electric leakage when the residual power meets the power required by the continuous operation of the train so as to control the carriage without electric leakage to be powered on and operate.
According to the vehicle control unit provided by the embodiment of the invention, after the train is identified to have electric leakage, the electric leakage detection is carried out on each carriage in sequence, the carriage with the electric leakage can be accurately determined, and the high-voltage power-off isolation is carried out on the carriage with the electric leakage according to the electric leakage detection result, so that the personal safety of passengers is ensured, meanwhile, the normal running of the train is kept under the condition of sufficient power, and the probability of the train stopping and being late is reduced.
In order to achieve the above object, a fourth aspect of the present invention provides a traction control unit, including: the receiving module is used for receiving a leakage detection signal sent by the vehicle control unit; and the control module is used for carrying out electric leakage detection on the carriage where the control module is positioned according to the electric leakage detection signal and sending an electric leakage signal to the whole vehicle controller when the current carriage is detected to be in electric leakage.
According to an embodiment of the present invention, the control module is further configured to: receiving indication information for controlling the closing of a negative relay, and controlling the closing of the negative relay; and when the voltage of the electric leakage sensor is identified to be greater than the preset voltage and last for a third preset time, sending the electric leakage signal to the vehicle control unit.
According to an embodiment of the present invention, when the vehicle control unit identifies that the current remaining power of the train meets the power required by the train to continue running, the control module is further configured to: acquiring a power-on signal sent by the vehicle control unit to a carriage without electric leakage; and controlling the compartment without electric leakage to be electrified and operated.
According to the traction control unit provided by the embodiment of the invention, after the leakage detection signal sent by the vehicle control unit is received, the leakage detection is carried out on the carriage where the traction control unit is positioned, and the high-voltage power-off isolation is carried out on the carriage where the traction control unit is positioned according to the instruction of the vehicle control unit, so that the personal safety of passengers is ensured.
To achieve the above object, an embodiment of a fifth aspect of the present invention provides a vehicle, including: the vehicle control unit; and the traction control unit.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a circuit for train leakage detection according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the connection of the traction control unit in an embodiment of the present invention;
fig. 3 is a flowchart of a train leakage detection method according to an embodiment of an aspect of the present invention;
FIG. 4 is a flow chart of a method for detecting train leakage according to an embodiment of an aspect of the present invention;
FIG. 5 is a flow chart of a train leakage detection method according to another embodiment of an aspect of the present invention;
fig. 6 is a flowchart of a train leakage detection method according to an embodiment of an aspect of the present invention;
FIG. 7 is a flow chart of a method for detecting train leakage in accordance with another embodiment of the present invention;
FIG. 8 is a flow chart of a method for detecting train leakage, according to an embodiment of the present invention;
FIG. 9 is a flow chart of a train leakage detection method according to another embodiment of the present invention;
fig. 10 is a schematic block diagram of a vehicle control unit according to an embodiment of the present invention;
FIG. 11 is a block diagram of a traction control unit according to an embodiment of the present invention;
fig. 12 is a block diagram of a train according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the related art, the train leakage can be detected by connecting a diversion resistor between the ground grid and the dc traction system. However, a rail train usually consists of a group, and each carriage is grounded and has a common negative pole, so that leakage of electricity in any carriage can cause the whole train to detect leakage information, and then a maintainer needs to check the leakage carriage first and then can check the leakage problem, a large amount of time is wasted, and if the train is in a running stage, the whole train running diagram is influenced.
The train and the method for detecting electric leakage thereof, the vehicle control unit and the traction control unit according to the embodiment of the invention are described below with reference to the accompanying drawings.
Fig. 1 is a schematic circuit diagram for train leakage detection according to an embodiment of the present invention. As shown in fig. 1 and 2, each car of the train has a high-voltage distribution box and at least one set of traction control system, wherein the traction control system includes a traction inverter and a traction control unit TCU, and the traction control unit TCU is used for controlling the on/off of high-speed circuit breakers (HSCB1, HSCB2 … … HSCBn) connected with a high-voltage positive pole, negative relays (KM1, KM2 … … KMn) connected with a high-voltage negative pole and traction contactors (KT1, KT2 … … KTn). Wherein, high-speed circuit breaker, negative pole relay and traction contactor all set up in high voltage distribution box.
Further, still be provided with the electric leakage detection sensor GR that is used for carriage electric leakage to detect and be used for detecting the hall device of electric leakage detection sensor GR voltage in the block terminal, wherein, electric leakage detection sensor GR sets up between high-pressure negative pole and ground (automobile body) for realize the electric leakage detection to the carriage. And the vehicle head and the vehicle tail are respectively provided with a set of CCU of the whole vehicle controller.
Fig. 3 is a flowchart of a train leakage detection method according to an embodiment of an aspect of the present invention. As shown in fig. 1, the method for detecting train leakage according to the embodiment of the present invention includes the following steps:
s101: and recognizing the occurrence of electric leakage of the train.
S102: and controlling a traction control unit in each carriage to perform high-voltage power-off isolation on the carriage where the traction control unit is located.
Wherein, the high-voltage power-off isolation at least comprises the disconnection of a high-speed circuit breaker and a negative relay.
That is to say, in the embodiment of the present invention, when it is recognized that the electric leakage occurs in the whole train, the high voltage power-off instruction is sent to the traction control unit in each car, so that the traction control unit controls the high-speed circuit breaker and the negative relay to be disconnected, thereby realizing the high voltage isolation of the whole train and avoiding the danger caused by the electric leakage.
S103: and sequentially sending a leakage detection signal to the traction control unit in each carriage so that the traction control unit can detect the leakage of the carriage in which the traction control unit is positioned.
According to an embodiment of the present invention, as shown in fig. 4, step S103 further includes:
s201: and sending indication information for closing the negative relay to the traction control unit.
Note that the leakage detection signal includes information indicating that the negative relay is closed.
S202: and judging whether the leakage signal sent by the traction control unit is received within the third preset time.
S203: if yes, the electric leakage of the compartment is determined.
Specifically, an instruction to close the negative relay may be sent to the traction control unit in each car, and as shown in fig. 1, the leakage sensor GR can detect leakage from the voltage between the high-voltage negative electrode and the ground (vehicle body). And then judging whether a leakage signal sent by the traction control unit is received within a third preset time, if the leakage signal sent by the traction control unit is received, determining that the carriage where the traction control unit is located leaks electricity, and if the leakage signal sent by the traction control unit is not received, determining that the carriage where the traction control unit is located does not leak electricity. The power supply line leakage and the train leakage are required to be identified within the third preset time, and when the train leakage occurs, the leakage detection of each carriage is required to be sequentially performed, so that the third preset time is required to be far longer than the first preset time and the second preset time to ensure that the leakage detection of all carriages can be finished, and specifically, the third preset time can be set to 10 s.
S104: and aiming at each carriage, identifying whether a leakage signal sent by the traction control unit is received or not, and carrying out high-voltage power-off isolation on the carriage again when the leakage signal is received.
That is, after the whole train is isolated under high voltage, the leakage detection signal may be sequentially sent to the traction control unit in each car, for example, the leakage detection signal may be sent to the traction control unit in each car at preset time intervals according to the sequence from the head to the tail or from the tail to the head, the traction control unit may perform leakage detection on the car where the traction control unit is located according to the leakage detection signal, and receive the leakage signal sent by the traction control unit when the traction control unit detects that the car where the traction control unit is located has leakage, and determine that the car has leakage and then isolate the car under high voltage power failure again.
Specifically, after the electric leakage of the train is acquired, a high-voltage power-off instruction is sent to a traction control unit in each carriage of the train, so that the whole train is isolated from the high-voltage power-off. Then, a leakage detection signal is sent to a traction control unit in a first carriage, the traction control unit in the first carriage controls a negative electricity saver to be closed according to the leakage detection signal so as to perform leakage detection on the first carriage through a leakage sensor GR, if the first carriage leaks electricity, the leakage signal sent by the traction control unit in the first carriage is received within a third preset time, at the moment, the train is determined to leak electricity, a high-voltage power-off instruction is sent to the traction control unit in the first carriage again, the traction control unit in the first carriage controls a negative relay to be disconnected, the carriage which leaks electricity is isolated in a high-voltage power-off mode, if the first carriage does not leak electricity, the leakage signal sent by the traction control unit in the first carriage cannot be received within the third preset time, and at the moment, the first carriage is determined not to leak electricity.
And sending a leakage detection signal to the traction control unit in the second carriage no matter the electric leakage or no electric leakage of the carriage is acquired, so that the traction control unit in the second carriage performs electric leakage detection on the second carriage, and so on until each carriage in the whole train is subjected to electric leakage detection.
It should be understood that when the leakage signal is not received within the third preset time, the high-voltage power-off instruction may also be sent before the leakage detection signal is sent to the next car, so that the whole train is still in the high-voltage power-off isolation state, and the safety of the train is ensured.
Before the leakage detection is carried out on each carriage, the train can be controlled to open the door, so that the train cannot run.
According to an embodiment of the present invention, after the electric leakage detection is performed for each car, the method further includes: and acquiring the current residual power of the train, and sending a power-on signal to a traction control unit in a carriage without electric leakage when the residual power meets the power required by the continuous operation of the train so as to control the power-on operation of the train without electric leakage.
That is to say, after the electric leakage detection is performed on each carriage, the number of the specific carriage with the electric leakage and the number of the carriages with the electric leakage can be acquired, at this time, the power which can be provided by the carriages without the electric leakage can be calculated, the current residual power of the train is acquired, then whether the residual power is greater than or equal to the power required by the continuous operation of the train is judged, if so, a power-on signal is sent to a traction control unit in the carriages without the electric leakage, so that the traction control unit in the carriages without the electric leakage controls the high-speed circuit breaker and the negative relay to be closed, the carriages are powered on to operate, and if not, the whole train is controlled to be in a high-voltage power-off isolation state and waits for maintenance by a.
It should be noted that the power required for the train to continue to operate may include power required for operation to the destination and power required for operation to the overhaul storage, where the power required for operation to the destination is greater than the power required for operation to the overhaul storage. It should be understood that when the residual power meets the power required by the operation to the destination and the power required by the operation to the overhaul storehouse simultaneously, the train is controlled to operate to the destination so as to reduce the probability of the occurrence of late or outage of the train, and if the current residual power can not meet the power required by the operation to the destination and can only meet the power required by the operation to the overhaul storehouse, the train is controlled to operate to the overhaul storehouse so as to prevent the influence of the vehicle outage overhaul on the train operation diagram.
According to an embodiment of the present invention, before recognizing that a train has an electrical leakage, as shown in fig. 5, the method further includes:
s301: and acquiring a leakage signal.
S302: and identifying whether a power supply line leakage signal is received within a first preset time.
S303: and if the power supply line leakage signal is received, determining that the power supply line leaks electricity.
S304: and if the power supply line electric leakage signal is not received, determining that the train has electric leakage.
It should be noted that, when a power supply end supplying power to a train leaks electricity, the leakage sensor GR disposed on the train can also detect leakage information and enable the traction control unit to send a leakage signal, but because the sensor for detecting the leakage information of the power supply end cannot complete the detection of the leakage of the power supply end and send the leakage signal of the power supply line, at this time, it is necessary to wait until the first preset time is over, and then determine whether the leakage signal of the power supply line is received within the first preset time, if the leakage signal of the power supply line is received, it is determined that the power supply line leaks electricity, the vehicle is controlled to stop and the high-voltage power-off isolation waits for maintenance by a maintenance worker, if the leakage signal of the power supply line is not received, it is determined that the train leaks electricity, and.
That is to say, if the power supply line leaks electricity, the train can only wait for rescue or power supply restoration, if the train leaks electricity, the train with the electricity leakage is detected, and when the number of the train with the electricity leakage is small, the train can be dragged to run by the power of other carriages, so that the aim of continuing the running of the train is fulfilled.
It should be understood that when the leakage signal is received, a high-voltage power-off command is sent to the traction control unit in each carriage, so that the train is isolated at high voltage as soon as possible, and the personal safety of passengers is ensured.
It should also be understood that, when the train leakage and the power supply line leakage are identified, the train leakage signal can be identified whether or not the train leakage signal is received. Specifically, after the leakage signal is acquired, whether the train leakage signal is received within a second preset time is identified, if the train leakage signal is received, it is determined that the train leaks electricity, and if the train leakage signal is not received, it is determined that the power supply line leaks electricity.
That is to say, in practical application, the mode of only using the train leakage signal or the power supply line leakage signal can be adopted to identify the train leakage and the power supply line leakage, and the two modes can also be adopted to identify at the same time, so that the accuracy of identification is improved. In the embodiment of the present invention, the first preset time may be set to be greater than the second preset time according to a parameter of the electrical leakage detection sensor GR, for example, the first preset time is 1-2s, and the second preset time is 800 s.
According to one embodiment of the invention, a reminding device can be further arranged, when a leakage signal is received, a train leakage reminding is sent to train drivers and train operation diagram commanders through the reminding device, and when a specific leakage compartment is detected, the position of the specific leakage compartment and the number of the leakage compartments are sent through the reminding device, so that the maintenance time is saved, and the probability of late train or outage is reduced.
According to one embodiment of the invention, whether the train is provided with the emergency power supply can be identified, if so, the emergency power supply can be controlled to supply power to enable the train to run to a destination or overhaul a warehouse when a leakage signal of a power supply line is identified, so that the influence on a train running chart is reduced as much as possible.
According to an embodiment of the present invention, as shown in fig. 6, the method comprises the following steps:
s401: and acquiring a leakage signal sent by a traction control unit in any carriage.
S402: and sending a high-voltage power-off instruction to a traction control unit in each carriage to isolate the whole train from high-voltage power-off.
S403: and judging whether a power supply line leakage signal is received within a first preset time. Wherein, the first preset time can be 1-2 s.
If yes, determining that the power supply line leaks electricity, and controlling the vehicle to wait for rescue or recover power supply;
if not, determining that the train generates electric leakage, and executing step S404.
S404: and sending a leakage detection signal to a traction control unit in the first carriage.
S405: and judging whether the leakage signal is received within the third preset time.
If yes, determining that the first compartment has electric leakage, and sending a high-voltage power-off instruction to a traction control unit of the first compartment;
if not, step S406 is performed.
S406: and sending a leakage detection signal to a traction control unit in the next carriage.
S407: and judging whether the leakage signal is received within the third preset time.
If yes, determining that the compartment leaks electricity, and sending a high-voltage power-off instruction to a traction control unit of the compartment;
if not, step S408 is performed.
S408: and judging whether the last carriage is reached.
If yes, go to step S409; if not, return to step S406.
S409: and acquiring the current residual power of the whole train.
S410: and judging whether the residual power meets the power required by the continuous operation of the train.
If yes, go to step S411; if not, step S412 is performed.
S411: and sending a power-on signal to a traction control unit in the carriage without electric leakage to control the power-on operation of the carriage with electric leakage.
S412: and controlling the whole train to wait for maintenance.
In summary, according to the train leakage detection method provided by the embodiment of the invention, after the train is identified to have electric leakage, the train can be accurately determined by sequentially performing electric leakage detection on each carriage, and the carriage with the electric leakage can be isolated by high-voltage power failure according to the electric leakage detection result, so that the personal safety of passengers can be ensured, meanwhile, the train can be kept in normal operation under the condition of sufficient power, and the probability of the train stopping and late is reduced.
Fig. 7 is a flowchart of a train leakage detection method according to another embodiment of the present invention. As shown in fig. 7, the method for detecting train leakage according to the embodiment of the present invention includes the following steps:
s501: and receiving a leakage detection signal sent by the vehicle control unit.
S502: and carrying out electric leakage detection on the carriage where the vehicle is located according to the electric leakage detection signal, and sending an electric leakage signal to the vehicle control unit when the current carriage is detected to have electric leakage.
That is to say, the leakage detection signal sent by the vehicle control unit can be used for detecting the leakage of the vehicle cabin where the vehicle control unit is located, and when the vehicle control unit detects that the vehicle cabin where the vehicle control unit is located has the leakage, the leakage signal is sent to the vehicle control unit, so that the vehicle control unit can determine that the current vehicle cabin has the leakage fault.
Further, the method of detecting leakage of a train according to a leakage detection signal and sending the leakage signal to the vehicle control unit when detecting that leakage occurs in a current car includes:
s601: and receiving indication information for controlling the closing of the negative relay and controlling the closing of the negative relay.
S602: and when the voltage of the electric leakage sensor is identified to be greater than the preset voltage and lasting for a fourth preset time, sending an electric leakage signal to the whole vehicle controller.
It should be noted that the leakage detection signal includes indication information for controlling the closing of the negative relay, so when the leakage detection information is received, that is, the indication information for controlling the closing of the negative relay is received, the closing of the negative relay is controlled according to the indication information, at this time, the leakage sensor GR performs leakage detection, whether the voltage of the leakage sensor GR reaches a preset voltage is determined, and when the preset voltage is reached, timing is started, if the voltage of the leakage sensor GR is greater than the preset voltage and lasts for a fourth preset time, it is determined that the vehicle compartment where the leakage sensor GR is located leaks electricity, and the leakage signal is sent to the vehicle control unit. In order to ensure that the vehicle control unit can receive the leakage signal within the third preset time, the fourth preset time can be set to be 1-2 s.
According to an embodiment of the present invention, as shown in fig. 9, the method further includes:
s701: and acquiring a power-on signal sent by the vehicle control unit to a compartment without electric leakage.
S702: and controlling the car without electric leakage to be electrified and operated.
That is to say, after the vehicle control unit detects the electric leakage of each compartment, when the current residual power of the whole train meets the power required by the continuous operation of the train, the power-on signal sent by the vehicle control unit to the compartment without electric leakage is acquired, and the compartment without electric leakage is controlled to be powered on and operated, wherein the step of controlling the power-on operation of the compartment without electric leakage comprises the step of controlling the high-speed circuit breaker and the negative relay in the compartment without electric leakage to be closed.
In summary, according to the train electric leakage detection method provided by the embodiment of the invention, after receiving the electric leakage detection signal sent by the vehicle control unit, the train carriage where the train carriage is located can be subjected to electric leakage detection, and the train carriage where the train carriage is located can be subjected to high-voltage power-off isolation according to the instruction of the vehicle control unit, so that the personal safety of passengers can be ensured.
In order to realize the embodiment, the invention further provides a vehicle control unit.
Fig. 10 is a schematic block diagram of a vehicle control unit according to an embodiment of the present invention. As shown in fig. 10, the vehicle control unit 100 includes: a control module 101 and a sending module 102.
The control module 101 is used for identifying the occurrence of electric leakage of the train and controlling the traction control unit in each carriage to perform high-voltage power-off isolation on the carriage where the traction control unit is located; the sending module 20 is configured to send a leakage detection signal to the traction control unit in each car in sequence, so that the traction control unit performs leakage detection on the car where the traction control unit is located. Wherein, the high-voltage power-off isolation at least comprises the disconnection of a high-speed circuit breaker and a negative relay.
For each car, the control module 101 is further configured to: and identifying whether a leakage signal sent by the traction control unit is received or not, and carrying out high-voltage power-off isolation on the carriage again when the leakage signal is received.
Further, the control module 101 is further configured to: acquiring a leakage signal; identifying whether a power supply line leakage signal is received within a first preset time; if a power supply line leakage signal is received, determining that the power supply line has leakage; and if the power supply line electric leakage signal is not received, determining that the train has electric leakage.
Further, the control module 101 is further configured to: acquiring a leakage signal; identifying whether a train leakage signal is received within a second preset time; if a train electric leakage signal is received, determining that the train has electric leakage; and if the train leakage signal is not received, determining that the power supply line has leakage.
Further, the sending module 102 is further configured to: sending indication information for closing the negative relay to a traction control unit; the control module is further configured to: judging whether a leakage signal sent by the traction control unit is received within second preset time; if yes, the electric leakage of the compartment is determined.
Further, the control module 101 is further configured to: and acquiring the current residual power of the train, and sending a power-on signal to a traction control unit in a carriage without electric leakage when the residual power meets the power required by the continuous operation of the train so as to control the power-on operation of the carriage without electric leakage.
It should be noted that the foregoing explanation of the embodiment of the train leakage detection method is also applicable to the vehicle control unit of the embodiment, and is not repeated herein.
In order to implement the above embodiments, the present invention further provides a traction control unit.
Fig. 11 is a block diagram of a traction control unit according to an embodiment of the present invention. As shown in fig. 11, the traction control unit 200 includes: a receiving module 201 and a control module 202.
The receiving module 201 is configured to receive a leakage detection signal sent by the vehicle control unit; the control module 202 is configured to perform leakage detection on the carriage where the control module is located according to the leakage detection signal, and send a leakage signal to the vehicle control unit when detecting that the current carriage has leakage.
Further, the control module 202 is further configured to: receiving indication information for controlling the closing of the negative relay and controlling the closing of the negative relay; and when the voltage of the electric leakage sensor is identified to be greater than the preset voltage and last for a third preset time, sending an electric leakage signal to the vehicle control unit.
Further, the control module 202 is further configured to: acquiring a power-on signal sent by the vehicle control unit to a compartment without electric leakage; and controlling the car without electric leakage to be electrified and operated.
It should be noted that the foregoing explanation of the embodiment of the method for detecting train leakage on the other hand is also applicable to the traction control unit of the embodiment, and is not repeated here.
In order to implement the above embodiment, the present invention further provides a vehicle, as shown in fig. 12, a vehicle 1000 includes a vehicle control unit 100 and a traction control unit 200.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
Claims (17)
1. A train electric leakage detection method is characterized by comprising the following steps:
recognizing the occurrence of electric leakage of the train;
controlling a traction control unit in each carriage to perform high-voltage power-off isolation on the carriage where the traction control unit is located;
sequentially sending leakage detection signals to the traction control units in each carriage so that the traction control units perform leakage detection on the carriages in which the traction control units are located;
and aiming at each carriage, identifying whether the leakage signal sent by the traction control unit is received or not, and carrying out high-voltage power-off isolation on the carriage again when the leakage signal is received.
2. The method for detecting train electric leakage according to claim 1, further comprising, before said identifying that electric leakage occurs in the train:
acquiring the leakage signal;
identifying whether a power supply line leakage signal is received within a first preset time;
if the power supply line electric leakage signal is received, determining that the power supply line has electric leakage;
and if the power supply line electric leakage signal is not received, determining that the train has electric leakage.
3. The method for detecting train electric leakage according to claim 1, further comprising, before said identifying that electric leakage occurs in the train:
acquiring the leakage signal;
identifying whether a train leakage signal is received within a second preset time;
if the train electric leakage signal is received, determining that the train has electric leakage;
and if the train electric leakage signal is not received, determining that the electric leakage occurs in the power supply line.
4. The method for detecting train electric leakage according to claim 1, wherein the step of sequentially sending an electric leakage detection signal to a traction control unit in each car to enable the traction control unit to perform electric leakage detection on the car where the traction control unit is located further comprises the steps of:
sending indication information for closing the negative relay to the traction control unit;
judging whether a leakage signal sent by the traction control unit is received within a third preset time;
if yes, the electric leakage of the compartment is determined.
5. The method for detecting train electric leakage according to claim 1, further comprising:
and after the electric leakage detection is carried out on each carriage, the current residual power of the train is obtained, and when the residual power meets the power required by the continuous operation of the train, a power-on signal is sent to a traction control unit in the carriage without electric leakage so as to control the carriage without electric leakage to be powered on and operate.
6. A train electric leakage detection method is characterized by comprising the following steps:
receiving a leakage detection signal sent by the vehicle controller;
and carrying out electric leakage detection on the carriage where the vehicle is located according to the electric leakage detection signal, and sending an electric leakage signal to the vehicle control unit when the current carriage is detected to be in electric leakage.
7. The method for detecting train electric leakage according to claim 6, wherein the detecting the train electric leakage according to the electric leakage detection signal and sending an electric leakage signal to the vehicle control unit when detecting that the current car is in electric leakage, further comprises:
receiving indication information for controlling the closing of a negative relay, and controlling the closing of the negative relay;
and when the voltage of the electric leakage sensor is identified to be greater than the preset voltage and lasting for a fourth preset time, sending the electric leakage signal to the vehicle control unit.
8. The method for detecting train electric leakage according to claim 6, further comprising: acquiring a power-on signal sent by the vehicle control unit to a carriage without electric leakage;
and controlling the compartment without electric leakage to be electrified and operated.
9. A vehicle control unit, comprising:
the control module is used for identifying the occurrence of electric leakage of the train and controlling the traction control unit in each carriage to perform high-voltage power-off isolation on the carriage where the traction control unit is located; the sending module is used for sending electric leakage detection signals to the traction control units in each carriage in sequence so that the traction control units can detect the electric leakage of the carriages in which the traction control units are located;
for each car, the control module is further configured to: and identifying whether the leakage signal sent by the traction control unit is received or not, and carrying out high-voltage power-off isolation on the carriage again when the leakage signal is received.
10. The vehicle control unit of claim 9, wherein the control module is further configured to:
acquiring the leakage signal;
identifying whether a power supply line leakage signal is received within a first preset time;
if the power supply line electric leakage signal is received, determining that the power supply line has electric leakage;
and if the power supply line electric leakage signal is not received, determining that the train has electric leakage.
11. The vehicle control unit of claim 9, wherein the control module is further configured to:
acquiring the leakage signal;
identifying whether a train leakage signal is received within a second preset time;
if the train electric leakage signal is received, determining that the train has electric leakage;
and if the train electric leakage signal is not received, determining that the electric leakage occurs in the power supply line.
12. The vehicle control unit of claim 9, wherein the transmitting module is further configured to:
sending indication information for closing the negative relay to the traction control unit;
the control module is further configured to: judging whether a leakage signal sent by the traction control unit is received within a second preset time; if yes, the electric leakage of the compartment is determined.
13. The vehicle control unit of claim 9, wherein the control module is further configured to:
and acquiring the current residual power of the train, and sending a power-on signal to a traction control unit in a carriage without electric leakage when the residual power meets the power required by the continuous operation of the train so as to control the carriage without electric leakage to be powered on and operate.
14. A traction control unit, comprising:
the receiving module is used for receiving a leakage detection signal sent by the vehicle control unit;
and the control module is used for carrying out electric leakage detection on the carriage where the control module is positioned according to the electric leakage detection signal and sending an electric leakage signal to the whole vehicle controller when the current carriage is detected to be in electric leakage.
15. The traction control unit of claim 14, wherein the control module is further configured to:
receiving indication information for controlling the closing of a negative relay, and controlling the closing of the negative relay;
and when the voltage of the electric leakage sensor is identified to be greater than the preset voltage and last for a third preset time, sending the electric leakage signal to the vehicle control unit.
16. The traction control unit of claim 14, wherein the control module is further configured to:
acquiring a power-on signal sent by the vehicle control unit to a carriage without electric leakage;
and controlling the compartment without electric leakage to be electrified and operated.
17. A vehicle, characterized by comprising:
the vehicle control unit of any one of claims 9-13; and
the traction control unit of any one of claims 14-16.
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| CN201910577943.3A CN112230044B (en) | 2019-06-28 | 2019-06-28 | Train and electric leakage detection method thereof, whole vehicle controller and traction control unit |
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| CN201910577943.3A CN112230044B (en) | 2019-06-28 | 2019-06-28 | Train and electric leakage detection method thereof, whole vehicle controller and traction control unit |
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