CN114030360A - Train operation control method and system - Google Patents

Train operation control method and system Download PDF

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Publication number
CN114030360A
CN114030360A CN202210018991.0A CN202210018991A CN114030360A CN 114030360 A CN114030360 A CN 114030360A CN 202210018991 A CN202210018991 A CN 202210018991A CN 114030360 A CN114030360 A CN 114030360A
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China
Prior art keywords
train
voltage value
braking
grid voltage
power supply
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CN202210018991.0A
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Chinese (zh)
Inventor
林颖
王资昌
胡志群
李洪飞
邢佳
彭萍萍
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Beijing Hollysys Co Ltd
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Beijing Hollysys Co Ltd
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Priority to CN202210018991.0A priority Critical patent/CN114030360A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L7/00—Electrodynamic brake systems for vehicles in general
    • B60L7/10—Dynamic electric regenerative braking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L55/00—Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/26—Rail vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

Disclosed herein is a train operation control method including: acquiring an actual grid voltage value of a power supply network of a power supply section where a train is located and a power state of the train in a running stage; and comparing the actual grid voltage value of the power supply network with a standard grid voltage value, and regulating the traction or the brake of the train according to the comparison result and the power state of the train. The scheme can improve the utilization rate of the regenerated energy of the train operation system.

Description

Train operation control method and system
Technical Field
The embodiment of the application relates to the field of rail transit train operation control, in particular to a train operation control method and system.
Background
In railway transportation, the subway is a large-scale urban infrastructure, provides basic services for social production and life, relieves urban traffic pressure, drives surrounding economic development, and is one of images of large cities. The subway has the advantages of good punctuality, good comfort, small interference from the outside, safety and reliability. The energy consumption ratio for rail transport is the lowest compared to road and aircraft, but the energy consumption for huge capacity is still not a little worth. Energy sources in China are relatively scarce, and energy conservation and emission reduction are increasingly emphasized. Therefore, the efficiency of the train operation system is further improved, the energy consumption is reduced, and the method is an important research direction of railway transportation.
Therefore, it is very important to evaluate the energy consumption of the subway during operation, plan the operation plan according to the line condition, or verify whether the operation plan can perform energy-saving control on the basis of ensuring the accuracy and comfort level, and reduce the train energy consumption. And part of the trains are provided with regenerative braking, kinetic energy of the trains can be converted into electric energy during braking, and when the voltage of a contact net or a three-rail is low, the kinetic energy can be transmitted to other vehicles through a power supply network for use.
Disclosure of Invention
The embodiment of the application provides a train operation control method, which comprises the following steps:
acquiring an actual grid voltage value of a power supply network of a power supply section where a train is located and a power state of the train in a running stage;
and comparing the actual grid voltage value of the power supply network with a standard grid voltage value, and regulating the traction or the brake of the train according to the comparison result and the power state of the train.
The embodiment of the application provides a train operation control system, includes:
the information acquisition module is configured to acquire an actual grid voltage value of a power supply network of a power supply section where the train is located and a power state of the train in a running stage;
and the regulating control module is configured to compare the actual grid voltage value of the power supply network with a standard grid voltage value and regulate the traction or braking of the train according to the comparison result and the power state of the train.
According to the train operation control method, the actual grid voltage value of the power supply network of the power supply section where the train is located and the power state of the train in the operation stage are obtained, the actual grid voltage value of the power supply network is compared with the standard grid voltage value, and the traction or the braking of the train is adjusted according to the comparison result and the power state of the train. The method regulates and controls the traction or braking of the train by monitoring the actual network voltage of the power supply network in the power supply section where the train is located, and can improve the utilization rate of the regenerated energy of the train operation system.
Other aspects will be apparent upon reading and understanding the attached drawings and detailed description.
Drawings
The accompanying drawings are included to provide an understanding of the present disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the examples serve to explain the principles of the disclosure and not to limit the disclosure.
Fig. 1 is a flowchart of a train operation control method according to an embodiment of the present application;
FIG. 2 is a schematic illustration of a train operating phase according to an embodiment of the present application;
fig. 3 is a schematic diagram of a train operation control system according to an embodiment of the present application.
Detailed Description
The present application describes embodiments, but the description is illustrative rather than limiting and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Any feature or element of any embodiment may be used in combination with or instead of any other feature or element in any other embodiment, unless expressly limited otherwise.
The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements disclosed in the present application may also be combined with any conventional features or elements to form a unique inventive concept as defined by the appended claims. Any feature or element of any embodiment may also be combined with features or elements from other inventive aspects to form yet another unique inventive aspect, as defined by the appended claims. Thus, it should be understood that any of the features shown and/or discussed in this application may be implemented alone or in any suitable combination. Accordingly, the embodiments are not limited except as by the appended claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of the appended claims.
Further, in describing representative embodiments, the specification may have presented the method and/or process as a particular sequence of steps. However, to the extent that the method or process does not rely on the particular order of steps set forth herein, the method or process should not be limited to the particular sequence of steps described. Other orders of steps are possible as will be understood by those of ordinary skill in the art. Accordingly, the particular order of the steps set forth in the specification should not be construed as limitations on the claims appended hereto. Further, the claims directed to the method and/or process should not be limited to the performance of their steps in the order written, and one skilled in the art can readily appreciate that the sequences may be varied and still remain within the spirit and scope of the embodiments of the present application.
The traction train can cause a contact net or a third rail to generate voltage drop, energy generated by regenerative braking of the braking train can supplement the voltage drop generated by the traction train, and energy generated by regenerative braking power generation can be fed back to the power grid, so that energy used by the traction train can be supplemented. The green CBTC (Communication Based Train Control System) is a next generation Train Control System integrating transportation organization, traction power supply, vehicles, lines, and signal Control. The application provides an ATO (Automatic Train Operation) Train control method based on a green CBTC (communication based Train control) system to improve the utilization rate of regenerated energy.
As shown in fig. 1, an embodiment of the present application provides a train operation control method, including:
step S10, acquiring the actual grid voltage value of the power supply network of the power supply section where the train is located and the power state of the train in the operation stage;
step S20, comparing the actual grid voltage value of the power supply network with a standard grid voltage value, and adjusting the traction or braking of the train according to the comparison result and the power state of the train;
wherein the power states include: traction state or braking state.
The train operation control method of the embodiment obtains the actual grid voltage value of the power supply network of the power supply section where the train is located in the operation stage and the power state of the train, compares the actual grid voltage value of the power supply network with the standard grid voltage value, and adjusts traction or braking of the train according to the comparison result and the power state of the train. The method regulates and controls the traction or braking of the train by monitoring the actual network voltage of the power supply network in the power supply section where the train is located, and can improve the utilization rate of the regenerated energy of the train operation system.
As shown in fig. 2, the operation phase of the train includes any one of the following: a stationary phase, a starting phase, an interval operation phase and a stopping phase.
The stationary phase is a phase in which the train operation speed is 0. The starting phase refers to the running phase that the train accelerates from a standstill until the running speed of the train reaches the target configuration speed. The interval running stage is an automatic speed regulation running stage in which the running speed of the train is greater than or equal to the target configuration speed after the train passes through the starting stage, and the distance between the train and the stopping point is greater than or equal to the target configuration distance. The parking stage refers to a running stage in which the distance from the train to a parking point after the train passes through the section running stage is less than or equal to the target configuration distance.
In some exemplary embodiments, the adjusting the traction of the train according to the comparison result and the power state of the train includes:
the train is in an interval operation stage and the power state is a traction state, and if the absolute value of the voltage difference between the actual grid voltage value and the standard grid voltage value of the power supply network is less than or equal to a first threshold value, the traction of the current train is kept unchanged; if the actual grid voltage value of the power supply grid is greater than the sum of the standard grid voltage value and the first threshold value, loading the traction of the train; if the actual grid voltage value of the power supply grid is less than the standard grid voltage value minus the first threshold value, the traction of the train is unloaded.
In some exemplary embodiments, adjusting the traction of the train based on the comparison and the power state of the train further comprises:
the method comprises the steps that a train is in an interval operation stage and a power state is a traction state, a traction speed regulation table is searched according to the absolute value of the voltage difference between the actual network voltage value and the standard network voltage value of a power supply network, the adjustment rate of traction is determined according to the search result, and the traction of the train is loaded or unloaded according to the determined adjustment rate; the traction speed regulation meter records a plurality of groups of traction speed regulation gears corresponding to the absolute value of the voltage difference between the actual network voltage value and the standard network voltage value of the power supply network.
In some exemplary embodiments, the traction speed regulation table records three traction speed regulation gears, and the absolute value of the voltage difference between the actual grid voltage value and the standard grid voltage value of the power supply grid is less than or equal to a second threshold value, which corresponds to slow speed regulation traction; the voltage difference absolute value between the actual grid voltage value and the standard grid voltage value of the power supply network is greater than a second threshold value and smaller than a third threshold value, and the medium-speed regulation traction is corresponding to the medium-speed regulation traction; the absolute value of the voltage difference between the actual grid voltage value of the power supply grid and the standard grid voltage value being greater than or equal to a third threshold value corresponds to a fast regulation of the traction; the second threshold is less than a third threshold; the second threshold is greater than the first threshold. In other embodiments, the traction governing meter may also record more governing gears or only record two governing gears according to actual requirements.
The speed of loading or unloading traction is determined by searching the traction speed regulation table, so that the traction regulation and control of the train can be more refined. When the difference between the actual network voltage value of the power supply network and the standard network voltage value is large, the actual network voltage can be quickly close to the standard network voltage; when the difference between the actual net pressure and the standard net pressure is small, the actual net pressure can be slowly close to the standard net pressure.
In some exemplary embodiments, the adjusting the braking of the train according to the comparison result and the power state of the train includes:
when the train is in an interval operation stage and the power state is a braking state, if the absolute value of the voltage difference between the actual grid voltage value and the standard grid voltage value of the power supply network is less than or equal to a fourth threshold value, keeping the current braking of the train unchanged; if the actual grid voltage value of the power supply network is smaller than the difference of the standard grid voltage value minus the fourth threshold value and the actual braking percentage of the train is larger than or equal to the maximum braking percentage during pure electric braking at the current speed of the train, keeping the current braking of the train unchanged; if the actual grid voltage value of the power supply network is smaller than the difference of the standard grid voltage value minus the fourth threshold value and the actual train braking percentage is larger than or equal to the maximum braking percentage during pure electric braking at the current speed of the train, loading the braking of the train; and if the actual grid voltage value of the power supply grid is greater than the sum of the standard grid voltage value and the first threshold value and the actual acceleration absolute value of the train is greater than the target acceleration absolute value, unloading the braking of the train.
In some exemplary embodiments, said adjusting the braking of the train according to the comparison result and the power state of the train further comprises:
the method comprises the steps that a train is in an interval operation stage and a power state is a braking state, a braking speed regulation table is searched according to the absolute value of the voltage difference between the actual network voltage value and the standard network voltage value of a power supply network, the adjustment rate of braking is determined according to the search result, and the braking of the train is loaded or unloaded according to the determined adjustment rate; the braking speed regulation meter records a plurality of groups of braking speed regulation gears corresponding to the absolute value of the voltage difference between the actual network voltage value and the standard network voltage value of the power supply network.
In some exemplary embodiments, the brake governor table records three brake governor gears, and the absolute value of the voltage difference between the actual grid voltage value of the power supply grid and the standard grid voltage value is less than or equal to a fifth threshold value corresponds to a slow-speed regulation brake; the voltage difference absolute value between the actual grid voltage value and the standard grid voltage value of the power supply network is greater than a fifth threshold value and less than a sixth threshold value, and the medium-speed regulation brake is corresponding to the medium-speed regulation brake; the absolute value of the voltage difference between the actual grid voltage value of the power supply grid and the standard grid voltage value is greater than or equal to the sixth threshold value, and the fast regulation braking is corresponding to the fast regulation braking; the fifth threshold is less than a sixth threshold, and the fifth threshold is greater than the fourth threshold. In other embodiments, the traction governing meter may also record more governing gears or only record two governing gears according to actual requirements.
The speed of loading or unloading the brake is determined by searching the brake speed regulation table, so that the brake regulation and control of the train can be more refined. When the difference between the actual network voltage value of the power supply network and the standard network voltage value is large, the actual network voltage can be quickly close to the standard network voltage; when the difference between the actual net pressure and the standard net pressure is small, the actual net pressure can be slowly close to the standard net pressure.
As shown in fig. 2, an embodiment of the present disclosure provides a train operation control system, including:
the information acquisition module 100 is configured to acquire an actual grid voltage value of a power supply network of a power supply section where a train is located and a power state of the train in a running stage; wherein the power states include: traction state or braking state;
and the adjusting control module 200 is configured to compare the actual grid voltage value of the power supply network with a standard grid voltage value and adjust the traction or braking of the train according to the comparison result and the power state of the train.
The train operation control system comprises an information acquisition module and an adjustment control module, wherein the information acquisition module acquires an actual network voltage value of a power supply network of a power supply section where a train is located and a power state of the train in an operation stage; and the regulating control module compares the actual grid voltage value of the power supply network with a standard grid voltage value and regulates the traction or braking of the train according to the comparison result and the power state of the train. The train operation control system regulates and controls the traction or braking of the train by monitoring the actual network voltage of the power supply network in the power supply section where the train is located, and can improve the utilization rate of the regenerated energy of the train operation system.
In some exemplary embodiments, the regulation control module is configured to regulate the traction of the train based on the comparison and the power state of the train in the following manner: when the train is in an interval operation stage and the power state is a traction state, if the absolute value of the voltage difference between the actual grid voltage value and the standard grid voltage value of the power supply network is less than or equal to a first threshold value, keeping the traction of the current train unchanged; if the actual grid voltage value of the power supply grid is greater than the sum of the standard grid voltage value and the first threshold value, loading the traction of the train; if the actual grid voltage value of the power supply grid is less than the standard grid voltage value minus the first threshold value, the traction of the train is unloaded.
In some exemplary embodiments, the regulation control module is further configured to, when the train is in the interval operation stage and the power state is the traction state, search a traction speed regulation table according to an absolute value of a voltage difference between an actual grid voltage value and a standard grid voltage value of the power supply network, determine a regulation rate of traction according to a search result, and load or unload traction of the train according to the determined regulation rate; the traction speed regulation meter records a plurality of groups of traction speed regulation gears corresponding to the absolute value of the voltage difference between the actual network voltage value and the standard network voltage value of the power supply network.
In some exemplary embodiments, the traction speed regulation table records three traction speed regulation gears, and the absolute value of the voltage difference between the actual grid voltage value and the standard grid voltage value of the power supply grid is less than or equal to a second threshold value, which corresponds to slow speed regulation traction; the voltage difference absolute value between the actual grid voltage value and the standard grid voltage value of the power supply network is greater than a second threshold value and smaller than a third threshold value, and the medium-speed regulation traction is corresponding to the medium-speed regulation traction; the absolute value of the voltage difference between the actual grid voltage value of the power supply grid and the standard grid voltage value being greater than or equal to a third threshold value corresponds to a fast regulation of the traction; the second threshold is less than a third threshold; the second threshold is greater than the first threshold.
The speed of loading or unloading traction is determined by searching the traction speed regulation table, so that the traction regulation and control of the train can be more refined. When the difference between the actual network voltage value of the power supply network and the standard network voltage value is large, the actual network voltage can be quickly close to the standard network voltage; when the difference between the actual net pressure and the standard net pressure is small, the actual net pressure can be slowly close to the standard net pressure.
In some exemplary embodiments, the regulation control module is configured to regulate braking of the train based on the comparison and the power state of the train in the following manner: when the train is in an interval operation stage and the power state is a braking state, if the absolute value of the voltage difference between the actual grid voltage value and the standard grid voltage value of the power supply network is less than or equal to a fourth threshold value, keeping the current braking of the train unchanged; if the actual grid voltage value of the power supply network is smaller than the difference of the standard grid voltage value minus the fourth threshold value and the actual braking percentage of the train is larger than or equal to the maximum braking percentage during pure electric braking at the current speed of the train, keeping the current braking of the train unchanged; if the actual grid voltage value of the power supply network is smaller than the difference of the standard grid voltage value minus the fourth threshold value and the actual train braking percentage is larger than or equal to the maximum braking percentage during pure electric braking at the current speed of the train, loading the braking of the train; and if the actual grid voltage value of the power supply grid is greater than the sum of the standard grid voltage value and the first threshold value and the actual acceleration absolute value of the train is greater than the target acceleration absolute value, unloading the braking of the train.
In some exemplary embodiments, the regulation control module is further configured to, when the train is in the section operation stage and the power state is the braking state, find a braking speed regulation table according to an absolute value of a voltage difference between an actual grid voltage value and a standard grid voltage value of the power supply grid, determine a regulation rate of braking according to the finding result, and load or unload the braking of the train according to the determined regulation rate; the braking speed regulation meter records a plurality of groups of braking speed regulation gears corresponding to the absolute value of the voltage difference between the actual network voltage value and the standard network voltage value of the power supply network.
In some exemplary embodiments, the brake governor table records three brake governor gears, and the absolute value of the voltage difference between the actual grid voltage value of the power supply grid and the standard grid voltage value is less than or equal to a fifth threshold value corresponds to a slow-speed regulation brake; the voltage difference absolute value between the actual grid voltage value and the standard grid voltage value of the power supply network is greater than a fifth threshold value and less than a sixth threshold value, and the medium-speed regulation brake is corresponding to the medium-speed regulation brake; the absolute value of the voltage difference between the actual grid voltage value of the power supply grid and the standard grid voltage value is greater than or equal to the sixth threshold value, and the fast regulation braking is corresponding to the fast regulation braking; the fifth threshold is less than a sixth threshold, and the fifth threshold is greater than the fourth threshold.
The speed of loading or unloading the brake is determined by searching the brake speed regulation table, so that the brake regulation and control of the train can be more refined. When the difference between the actual network voltage value of the power supply network and the standard network voltage value is large, the actual network voltage can be quickly close to the standard network voltage; when the difference between the actual net pressure and the standard net pressure is small, the actual net pressure can be slowly close to the standard net pressure.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.

Claims (10)

1. A train operation control method comprising:
acquiring an actual grid voltage value of a power supply network of a power supply section where a train is located and a power state of the train in a running stage;
comparing the actual grid voltage value of the power supply network with a standard grid voltage value, and adjusting the traction or braking of the train according to the comparison result and the power state of the train;
wherein the power states include: traction state or braking state.
2. The control method according to claim 1, characterized in that:
the traction of the train is adjusted according to the comparison result and the power state of the train, and the method comprises the following steps:
the train is in an interval operation stage and the power state is a traction state, and if the absolute value of the voltage difference between the actual grid voltage value and the standard grid voltage value of the power supply network is less than or equal to a first threshold value, the traction of the current train is kept unchanged; if the actual grid voltage value of the power supply grid is greater than the sum of the standard grid voltage value and the first threshold value, loading the traction of the train; if the actual grid voltage value of the power supply grid is less than the standard grid voltage value minus the first threshold value, the traction of the train is unloaded.
3. The control method according to claim 2, characterized in that:
adjusting the traction of the train according to the comparison result and the power state of the train, further comprising:
the method comprises the steps that a train is in an interval operation stage and a power state is a traction state, a traction speed regulation table is searched according to the absolute value of the voltage difference between the actual network voltage value and the standard network voltage value of a power supply network, the adjustment rate of traction is determined according to the search result, and the traction of the train is loaded or unloaded according to the determined adjustment rate; the traction speed regulation meter records a plurality of groups of traction speed regulation gears corresponding to the absolute value of the voltage difference between the actual network voltage value and the standard network voltage value of the power supply network.
4. A control method according to claim 3, characterized in that:
recording a three-gear traction speed regulation gear in the traction speed regulation meter, wherein the absolute value of the voltage difference between the actual network voltage value and the standard network voltage value of the power supply network is less than or equal to a second threshold value and corresponds to slow speed regulation traction; the voltage difference absolute value between the actual grid voltage value and the standard grid voltage value of the power supply network is greater than a second threshold value and smaller than a third threshold value, and the medium-speed regulation traction is corresponding to the medium-speed regulation traction; the absolute value of the voltage difference between the actual grid voltage value of the power supply grid and the standard grid voltage value being greater than or equal to a third threshold value corresponds to a fast regulation of the traction; the second threshold is less than a third threshold; the second threshold is greater than the first threshold.
5. The control method according to claim 1, characterized in that:
the regulating the braking of the train according to the comparison result and the power state of the train comprises the following steps:
when the train is in an interval operation stage and the power state is a braking state, if the absolute value of the voltage difference between the actual grid voltage value and the standard grid voltage value of the power supply network is less than or equal to a fourth threshold value, keeping the current braking of the train unchanged; if the actual grid voltage value of the power supply network is smaller than the difference of the standard grid voltage value minus the fourth threshold value and the actual braking percentage of the train is larger than or equal to the maximum braking percentage during pure electric braking at the current speed of the train, keeping the current braking of the train unchanged; if the actual grid voltage value of the power supply network is smaller than the difference of the standard grid voltage value minus the fourth threshold value and the actual train braking percentage is larger than or equal to the maximum braking percentage during pure electric braking at the current speed of the train, loading the braking of the train; and if the actual grid voltage value of the power supply grid is greater than the sum of the standard grid voltage value and the first threshold value and the actual acceleration absolute value of the train is greater than the target acceleration absolute value, unloading the braking of the train.
6. The control method according to claim 5, characterized in that:
the brake of train is adjusted according to the comparison result and the power state of train, still includes:
the method comprises the steps that a train is in an interval operation stage and a power state is a braking state, a braking speed regulation table is searched according to the absolute value of the voltage difference between the actual network voltage value and the standard network voltage value of a power supply network, the adjustment rate of braking is determined according to the search result, and the braking of the train is loaded or unloaded according to the determined adjustment rate; the braking speed regulation meter records a plurality of groups of braking speed regulation gears corresponding to the absolute value of the voltage difference between the actual network voltage value and the standard network voltage value of the power supply network.
7. The control method according to claim 6, characterized in that:
recording a three-gear braking speed regulation gear in the braking speed regulation meter, wherein the absolute value of the voltage difference between the actual network voltage value and the standard network voltage value of the power supply network is less than or equal to a fifth threshold value and corresponds to slow speed regulation braking; the voltage difference absolute value between the actual grid voltage value and the standard grid voltage value of the power supply network is greater than a fifth threshold value and less than a sixth threshold value, and the medium-speed regulation brake is corresponding to the medium-speed regulation brake; the absolute value of the voltage difference between the actual grid voltage value of the power supply grid and the standard grid voltage value is greater than or equal to the sixth threshold value, and the fast regulation braking is corresponding to the fast regulation braking; the fifth threshold is less than a sixth threshold, and the fifth threshold is greater than the fourth threshold.
8. A train operation control system comprising:
the information acquisition module is configured to acquire an actual grid voltage value of a power supply network of a power supply section where the train is located and a power state of the train in a running stage; wherein the power states include: traction state or braking state;
and the regulating control module is configured to compare the actual grid voltage value of the power supply network with a standard grid voltage value and regulate the traction or braking of the train according to the comparison result and the power state of the train.
9. The control system of claim 8, wherein:
and the adjusting control module is configured to adjust the traction of the train according to the comparison result and the power state of the train in the following modes: when the train is in an interval operation stage and the power state is a traction state, if the absolute value of the voltage difference between the actual grid voltage value and the standard grid voltage value of the power supply network is less than or equal to a first threshold value, keeping the traction of the current train unchanged; if the actual grid voltage value of the power supply grid is greater than the sum of the standard grid voltage value and the first threshold value, loading the traction of the train; if the actual grid voltage value of the power supply grid is less than the standard grid voltage value minus the first threshold value, the traction of the train is unloaded.
10. The control system of claim 8, wherein:
and the adjusting control module is configured to adjust the braking of the train according to the comparison result and the power state of the train in the following modes: when the train is in an interval operation stage and the power state is a braking state, if the absolute value of the voltage difference between the actual grid voltage value and the standard grid voltage value of the power supply network is less than or equal to a fourth threshold value, keeping the current braking of the train unchanged; if the actual grid voltage value of the power supply network is smaller than the difference of the standard grid voltage value minus the fourth threshold value and the actual braking percentage of the train is larger than or equal to the maximum braking percentage during pure electric braking at the current speed of the train, keeping the current braking of the train unchanged; if the actual grid voltage value of the power supply network is smaller than the difference of the standard grid voltage value minus the fourth threshold value and the actual train braking percentage is larger than or equal to the maximum braking percentage during pure electric braking at the current speed of the train, loading the braking of the train; and if the actual grid voltage value of the power supply grid is greater than the sum of the standard grid voltage value and the first threshold value and the actual acceleration absolute value of the train is greater than the target acceleration absolute value, unloading the braking of the train.
CN202210018991.0A 2022-01-10 2022-01-10 Train operation control method and system Pending CN114030360A (en)

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Application publication date: 20220211