CN114593925A - Brake conversion control method, system and device, storage medium and train - Google Patents
Brake conversion control method, system and device, storage medium and train Download PDFInfo
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The invention discloses a brake conversion control method, a system, a device, a storage medium and a train, and relates to the field of brake control. The test unit and the test unit in the train to be tested cooperate to realize the conversion of the brake mode of the test unit, and do not need to cooperate with other test vehicles or power companies, so that the cost is saved, the efficiency is higher, and the test for the subsequent test of the brake mode conversion of the test unit is realized.
Description
Technical Field
The invention relates to the field of brake control, in particular to a brake conversion control method, a brake conversion control system, a brake conversion control device, a storage medium and a train.
Background
To ensure proper braking of a train, it is common to test for a transition in the braking mode of the train, for example, to test for a transition from regenerative braking to resistive braking of the train.
In the prior art, when a train to be tested is tested for conversion from regenerative braking to resistance braking, whether an energy feed device capable of absorbing electric energy generated during regenerative braking of the train to be tested is arranged on a power grid of a testing section is determined, if the energy feed device is arranged, a first testing method is adopted, namely, the energy feed device is firstly started by being matched with a power company, the train to be tested is controlled to be dragged to the highest speed, the maximum common braking is applied to the train to be tested, the electric energy generated during braking of the train to be tested is absorbed by the energy feed device through the power grid, therefore, the train to be tested is in regenerative braking, then the energy feed device is closed by being matched with the power company again, the train to be tested is not stopped and is still applying braking, and because the energy feed device does not absorb the electric energy generated during braking any more, the electric energy generated during braking is fed back to the power grid to cause the grid pressure to rise to be larger than the resistance braking starting threshold value of the train to be tested, enabling the train to be tested to enter resistance braking, and realizing the conversion from regenerative braking to resistance braking of the train to be tested; if the energy feeder is not arranged in the power grid, a second testing method is adopted, namely, an additional test accompanying vehicle with the same model as the train to be tested is arranged, the train to be tested and the accompanying test car are powered by the same power grid of the power supply station, and after the train to be tested is controlled to be pulled to the highest speed, immediately controlling the test car to apply maximum traction, controlling the train to be tested to apply maximum service brake after the test car is run, absorbing the electric energy generated when the train to be tested is braked by a traction system of the test car through a power grid, therefore, the train to be tested is in regenerative braking, then the train to be tested is controlled to run down or enter a braking state, electric energy generated when the train to be tested is braked cannot be absorbed but is fed back to a power grid to cause the grid voltage to be increased to be larger than a resistance braking starting threshold value of the train to be tested, the train to be tested enters resistance braking, and conversion from the regenerative braking to the resistance braking of the train to be tested is achieved.
Although the two testing methods can realize the test of the conversion from regenerative braking to resistance braking of the train to be tested, the first testing method needs to be matched with an electric power company, and in the matching process, due to the time difference when the communication equipment and related departments inform operators to operate, the testing opportunity is missed or unmatched, so that the experiment fails, and an ideal testing effect cannot be achieved. The second test method needs additional test vehicles, more testers are needed, the test is complicated, the test process needs to be matched more accurately, the probability of errors in busy trains is higher, the failure rate of the test is higher, and the potential safety hazard is higher when two trains run on the same test road section.
Disclosure of Invention
The invention aims to provide a brake conversion control method, a brake conversion control system, a brake conversion control device, a brake storage medium and a train, wherein an accompanying test unit in the train to be tested is matched with a test unit to realize the conversion of the brake mode of the test unit, and the train to be tested does not need to be matched with other accompanying test vehicles or power companies, so that the cost is saved and the efficiency is higher.
In order to solve the technical problem, the invention provides a brake conversion control method, which is applied to a train to be tested, wherein the train to be tested comprises a testing unit and an accompanying unit, the resistance brake starting threshold of the accompanying unit is smaller than the resistance brake starting threshold of the testing unit, and the method comprises the following steps:
after the train to be tested is pulled to the maximum running speed, controlling the train to be tested to apply first-level braking, and after electric energy generated when the train to be tested applies the first-level braking is applied to a power grid, the grid voltage of the power grid is greater than the resistance braking starting threshold value of the test accompanying unit and smaller than the resistance braking starting threshold value of the test unit;
after the test unit enters regenerative braking, the train to be tested is controlled to apply second-stage braking, after electric energy generated when the train to be tested applies the second-stage braking is applied to the power grid, the grid voltage of the power grid is larger than a resistance braking opening threshold value of the test unit, and the test unit enters resistance braking.
Preferably, after the train to be tested is pulled to the maximum running speed, before the train to be tested is controlled to apply the first level brake, the method further comprises the following steps:
and controlling the train to be tested to be pulled to the maximum running speed.
Preferably, after the train to be tested is pulled to the maximum running speed, before the train to be tested is controlled to apply the first level brake, the method further comprises the following steps:
and closing the energy feeding device of the test road section where the train to be tested currently runs.
Preferably, before the energy feeding device for the test section currently driven by the train to be tested is closed, the method further comprises the following steps:
judging whether the current running test road section of the train to be tested is provided with the energy feedback device or not;
if yes, the step of closing the energy feeding device of the test road section where the train to be tested currently runs is carried out.
Preferably, after judging whether the energy feedback device is arranged on the test road section where the train to be tested currently runs, the method further includes:
if not, controlling the train to be tested to apply the first-stage brake after the train to be tested is drawn to the maximum running speed.
Preferably, the train to be tested comprises N carriages; the first carriage to the ith carriage of the train to be tested are the test units; the (i + 1) th compartment to the Nth compartment of the train to be tested are the test accompanying units; n is more than i and is more than or equal to 1, and N and i are integers.
In order to solve the technical problem, the invention provides a brake conversion control system, which is applied to a train to be tested, wherein the train to be tested comprises a test unit and an accompanying test unit, the resistance brake starting threshold of the accompanying test unit is smaller than the resistance brake starting threshold of the test unit, and the system comprises:
the first control unit is used for controlling the train to be tested to apply first-level braking after the train to be tested is drawn to the maximum running speed, and after electric energy generated when the train to be tested applies the first-level braking is applied to a power grid, the grid voltage of the power grid is greater than the resistance braking starting threshold value of the test accompanying unit and smaller than the resistance braking starting threshold value of the test unit;
the second control unit is used for controlling the train to be tested to apply second-stage braking after the test unit enters regenerative braking, after electric energy generated when the train to be tested applies the second-stage braking is applied to the power grid, the grid voltage of the power grid is larger than the resistance braking opening threshold value of the test unit, and the test unit enters resistance braking.
In order to solve the above technical problem, the present invention provides a brake changeover control device, including:
a memory for storing a computer program;
a processor for implementing the steps of the brake changeover control method as described above when executing the computer program.
To solve the above technical problem, the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the brake changeover control method as described above.
In order to solve the technical problem, the invention provides a train, which comprises a testing unit and an accompanying unit, and further comprises the brake conversion control device.
The invention discloses a brake conversion control method, a system, a device, a storage medium and a train, and relates to the field of brake control. The test unit and the test unit in the train to be tested cooperate to realize the conversion of the brake mode of the test unit, and do not need to cooperate with other test vehicles or power companies, so that the cost is saved, the efficiency is higher, and the test for the subsequent test of the brake mode conversion of the test unit is realized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic flow chart of a brake changeover control method according to the present invention;
FIG. 2 is a flow chart illustrating a brake changeover control method according to the present invention;
FIG. 3 is a schematic structural diagram of a brake switching control system according to the present invention;
fig. 4 is a schematic structural diagram of a brake switching control device provided by the present invention.
Detailed Description
The core of the invention is to provide a brake conversion control method, a brake conversion control system, a brake conversion control device, a storage medium and a train, wherein an accompanying test unit in the train to be tested is matched with a test unit to realize the conversion of the brake mode of the test unit, and the train to be tested does not need to be matched with other accompanying test vehicles or power companies, so that the cost is saved and the efficiency is higher.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic flow chart of a brake conversion control method provided by the present invention, the method is applied to a train to be tested, the train to be tested includes a testing unit and an accompanying testing unit, a resistance brake on threshold of the accompanying testing unit is smaller than a resistance brake on threshold of the testing unit, and the method includes:
s11: after the train to be tested is pulled to the maximum running speed, controlling the train to be tested to apply first-level braking, and after electric energy generated when the train to be tested applies the first-level braking is applied to a power grid, the grid voltage of the power grid is greater than a resistance braking starting threshold value of the test accompanying unit and smaller than a resistance braking starting threshold value of the test unit;
the applicant considers that in the prior art, when a train is controlled to perform the conversion of a braking mode, the train is usually required to be matched with a power company to control an energy feeding device, or a test car is additionally arranged, however, no matter the train is matched with the power company or the test car, the waste of human resources and test resources is caused, and the safety and the accuracy during the test cannot be guaranteed.
In order to solve the technical problems, firstly, an energy feedback device is not needed to be arranged in a test route, a train to be tested in the application comprises a test unit and an accompanying test unit, namely, an accompanying test unit is not needed to be additionally arranged, the accompanying test unit of the train to be tested replaces the accompanying test unit in the prior art to be matched with the test unit to realize the conversion of the braking mode, the test unit and the accompanying test unit share one power grid because the test unit and the accompanying test unit belong to the same train, when the train to be tested applies first-level braking, the electric energy generated during the braking of the train to be tested is fed back to the power grid, the network voltage of the power grid is increased to be larger than the resistance braking opening threshold of the accompanying test unit and smaller than the resistance braking opening threshold of the test unit, so the accompanying test unit enters resistance braking, the electric energy generated by the test unit and the self-body during braking is consumed, so that the test unit enters into regenerative braking.
S12: after the test unit enters into regenerative braking, the train to be tested is controlled to apply second-stage braking, after electric energy generated when the train to be tested applies the second-stage braking is applied to the power grid, the grid voltage of the power grid is larger than the resistance braking starting threshold value of the test unit, and the test unit enters into resistance braking.
After the test unit enters into regenerative braking, the train to be tested applies second-stage braking, at the moment, after electric energy generated during braking of the train to be tested is applied to the power grid, the voltage of the power grid rises to be larger than a resistance braking opening threshold value of the test unit, and the test unit enters into resistance braking to realize conversion from the regenerative braking to the resistance braking.
Referring to fig. 2, fig. 2 is a specific flowchart of a braking conversion control method according to the present invention.
After the train to be tested is pulled to the maximum running speed, before controlling the train to be tested to apply the first level brake, the method also preferably comprises the following steps: and controlling the train to be tested to be towed to the maximum driving speed. The train to be tested is controlled to be pulled to the maximum running speed firstly, so that the longer braking time of the train to be tested is ensured, the conversion from regenerative braking to resistance braking is realized, and the success rate of the braking conversion test is ensured.
In addition, after the train to be tested is pulled to the maximum driving speed and before the train to be tested is controlled to apply the first-stage brake, the method can further include, but is not limited to: and closing the energy feed device of the test road section where the train to be tested currently runs. In order to avoid the energy in the test line to feed the device and absorb the voltage applied to the power grid when braking the train to be tested, the train to be tested cannot be converted to be braked by the resistor, the energy in the test line is preferentially closed, the electric energy generated when the test unit is braked is consumed by the test accompanying unit, and the success rate of the test is further ensured.
It should be further noted that before the energy feeding device for the test section currently driven by the train to be tested is closed, the method may further include, but is not limited to: judging whether a current running test road section of the train to be tested is provided with an energy feedback device or not; if yes, the step of closing the energy feedback device of the test road section where the train to be tested currently runs is carried out; if not, controlling the train to be tested to apply the first-stage brake after the train to be tested is drawn to the maximum running speed. It can be seen that, in the present application, it is determined whether an energy feedback device is arranged at a test road section, if the energy feedback device is arranged, the energy feedback device is closed, if the energy feedback device is not arranged, the train to be tested can be directly controlled to be drawn to the maximum driving speed, and after the train to be tested is drawn to the maximum driving speed, the train to be tested is controlled to apply a first-stage brake, so that the situation that the energy feedback device is included in a test route to cause the energy feedback device to consume electric energy generated when the test unit brakes and the test unit cannot be converted into a resistance brake is avoided, and the situation that the energy feedback device is not arranged in the test route to communicate with a power company to close the energy feedback device is also avoided, thereby improving the test efficiency and the success rate.
Therefore, the energy feeding device does not need to be matched with an electric power company to control the energy feeding device, the energy feeding device consumes electric energy generated when the train to be tested is braked, time difference generated when the train to be tested is matched with the electric power company is eliminated, the control flow is simplified, test failure caused by missing of control opportunity or mismatching of operation and test opportunity is avoided, and the success rate of the test is improved; also need not additionally to set up and accompany the test run, control accompanying the test run, so that accompany the test run and consume the electric energy that produces when waiting to examine the train braking, the cost of setting up of accompanying the test run has been saved, and only await measuring the train operation on the test circuit, it is higher than the security of awaiting measuring the train and accompanying the test run when simultaneously on with the test circuit, still saved and communicated with the power company and control accompany the test run and with accompany the test run and carry out the manpower resources that communicates, the success rate of test is also higher.
On the basis of the above-described embodiment:
as a preferred embodiment, the train to be tested comprises N cars; the first carriage to the ith carriage of the train to be tested are test units; the (i + 1) th compartment to the Nth compartment of the train to be tested are accompanying and testing units; n is more than i and is more than or equal to 1, and both N and i are integers.
In the embodiment, the train to be tested is divided into two parts, the ith carriage and the preceding carriages are all testing units, the (i + 1) th carriage and the following carriages are all test accompanying units, and the testing units and the test accompanying units belong to the train to be tested, so that only one train to be tested on a testing road section is tested, the safety of the train to be tested is ensured, the test accompanying units and the testing units realize that regenerative braking and resistance braking exist on the same train to be tested at the same time, the test accompanying units can consume electric energy generated when the testing units brake through self resistance braking, and the testing units enter the regenerative braking to meet the testing requirements.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a brake conversion control system provided by the present invention, the system is applied to a train to be tested, the train to be tested includes a testing unit and an accompanying testing unit, a resistance brake on threshold of the accompanying testing unit is smaller than a resistance brake on threshold of the testing unit, the system includes:
the first control unit 31 is used for controlling the train to be tested to apply first-level braking after the train to be tested is pulled to the maximum running speed, and after electric energy generated when the train to be tested applies the first-level braking is applied to a power grid, the grid voltage of the power grid is greater than a resistance braking starting threshold value of the test unit and less than a resistance braking starting threshold value of the test unit;
and the second control unit 32 is used for controlling the train to be tested to apply second-stage braking after the test unit enters into regenerative braking, and after the electric energy generated when the train to be tested applies the second-stage braking is applied to the power grid, the grid voltage of the power grid is greater than the resistance braking opening threshold value of the test unit, and the test unit enters into resistance braking.
For the description of the braking conversion control system provided by the present invention, please refer to the above method embodiments, and the present invention is not repeated herein.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a brake conversion control device provided in the present invention, the device includes:
a memory 41 for storing a computer program;
and a processor 42 for implementing the steps of the brake changeover control method described above when executing a computer program.
For the description of the braking conversion control device provided by the present invention, please refer to the above method embodiments, and the present invention is not repeated herein.
The computer readable storage medium in the present invention has stored thereon a computer program which, when executed by the processor 42, implements the steps of the brake switching control method as described above.
For the introduction of the computer-readable storage medium provided by the present invention, please refer to the above method embodiments, which are not repeated herein.
The invention also provides a train, which comprises a test unit, an accompanying unit and the brake conversion control device
For the train introduction provided by the present invention, please refer to the above method embodiment, and the present invention is not repeated herein.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A brake conversion control method is applied to a train to be tested, the train to be tested comprises a testing unit and an accompanying testing unit, the resistance brake opening threshold value of the accompanying testing unit is smaller than the resistance brake opening threshold value of the testing unit, and the method comprises the following steps:
after the train to be tested is pulled to the maximum running speed, controlling the train to be tested to apply first-level braking, and after electric energy generated when the train to be tested applies the first-level braking is applied to a power grid, the grid voltage of the power grid is greater than the resistance braking starting threshold value of the test accompanying unit and smaller than the resistance braking starting threshold value of the test unit;
after the test unit enters regenerative braking, the train to be tested is controlled to apply second-stage braking, after electric energy generated when the train to be tested applies the second-stage braking is applied to the power grid, the grid voltage of the power grid is larger than a resistance braking opening threshold value of the test unit, and the test unit enters resistance braking.
2. The brake conversion control method of claim 1, wherein after the train to be tested is drawn to the maximum driving speed, before controlling the train to be tested to apply the first level of braking, further comprising:
and controlling the train to be tested to be pulled to the maximum running speed.
3. The brake conversion control method of claim 1, wherein after the train to be tested is drawn to the maximum driving speed, before controlling the train to be tested to apply the first level of braking, further comprising:
and closing the energy feeding device of the test road section where the train to be tested currently runs.
4. The brake conversion control method according to claim 3, wherein before the closing of the energy feeding device of the test section on which the train to be tested is currently running, the method further comprises:
judging whether the current running test road section of the train to be tested is provided with the energy feedback device or not;
if yes, the step of closing the energy feeding device of the test road section where the train to be tested currently runs is carried out.
5. The brake conversion control method according to claim 4, wherein after determining whether the energy feeding device is installed on the test section where the train to be tested currently travels, the method further comprises:
if not, controlling the train to be tested to apply the first-stage brake after the train to be tested is drawn to the maximum running speed.
6. The brake conversion control method according to any one of claims 1 to 5, wherein the train to be tested includes N cars; the first carriage to the ith carriage of the train to be tested are the test units; the (i + 1) th compartment to the Nth compartment of the train to be tested are the accompanying and testing units; n is more than i and is more than or equal to 1, and both N and i are integers.
7. The brake conversion control system is applied to a train to be tested, the train to be tested comprises a testing unit and an accompanying testing unit, the resistance brake opening threshold value of the accompanying testing unit is smaller than that of the testing unit, and the system comprises:
the first control unit is used for controlling the train to be tested to apply first-level braking after the train to be tested is drawn to the maximum running speed, and after electric energy generated when the train to be tested applies the first-level braking is applied to a power grid, the grid voltage of the power grid is greater than the resistance braking starting threshold value of the test accompanying unit and smaller than the resistance braking starting threshold value of the test unit;
the second control unit is used for controlling the train to be tested to apply second-stage braking after the test unit enters regenerative braking, after electric energy generated when the train to be tested applies the second-stage braking is applied to the power grid, the grid voltage of the power grid is larger than the resistance braking opening threshold value of the test unit, and the test unit enters resistance braking.
8. A brake changeover control device characterized by comprising:
a memory for storing a computer program;
a processor for implementing the steps of the brake changeover control method as claimed in any one of claims 1 to 6 when executing said computer program.
9. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps of the brake conversion control method according to one of claims 1 to 6.
10. A train comprising a test unit and an accompanying test unit, further comprising a brake switching control device according to claim 8.
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| CN202210367069.2A CN114593925B (en) | 2022-04-08 | 2022-04-08 | Brake conversion control method, system, device, storage medium and train |
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| CN202210367069.2A CN114593925B (en) | 2022-04-08 | 2022-04-08 | Brake conversion control method, system, device, storage medium and train |
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