WO2019218523A1

WO2019218523A1 - High-voltage network side circuit of motor train in motor train unit and control method therefor

Info

Publication number: WO2019218523A1
Application number: PCT/CN2018/102645
Authority: WO
Inventors: 樊运新; 李希宁; 王位; 陈哲; 陈娟; 刘华; 孙达明
Original assignee: 中车株洲电力机车有限公司
Priority date: 2018-05-18
Filing date: 2018-08-28
Publication date: 2019-11-21
Also published as: CN108572574A; CN108572574B

Abstract

A high-voltage network side circuit of a motor train in a motor train unit and a control method and device therefor, a computer readable storage medium, the high-voltage network side circuit comprising a plurality of receiving branches (1) connected in parallel, a bypass branch (2), a mode input detection circuit (3) and a controller (4), wherein the bypass branch (2) comprises a high-voltage disconnecting switch of which a first end is connected to an output end of the receiving branches (1), and a second end of the high-voltage disconnecting switch serves as a bypass point and is connected to bypass points of other motor trains; the mode input detection circuit (3) is used to detect a mode selection instruction inputted by a user; and the controller (4) is used to send a closing instruction to the high-voltage disconnecting switch when the user inputs a double-motor-train traction mode instruction, and send a shut-off instruction to the high-voltage disconnecting switch when the user inputs a single-motor-train traction mode instruction; and any of the receiving branches (1) is controlled to turn on so as to output a power supply. The present application may improve the flexibility and safety of the circuit under different grouping modes.

Description

High-voltage network side circuit of power car in electric train and control method thereof

This application claims priority to Chinese Patent Application No. 201810479788.7, entitled "High-voltage network side circuit of a power car in an EMU and its control method", which was submitted to the Chinese Patent Office on May 18, 2018. The entire contents are incorporated herein by reference.

Technical field

The present application relates to the technical field of rail vehicle power supply, and in particular, to a high voltage network side circuit of a power vehicle in an EMU, a control method thereof, a device and a computer readable storage medium.

Background technique

With the development of China's science and technology, great progress has been made in the field of rail transit technology.

In the field of rail transit, an EMU is a group of vehicles that are connected by several power cars and several section trailers. Among them, the power centralized EMU refers to the EMU of the power car in which the power devices are installed at both ends of the train, which has the advantages of convenient maintenance and high safety.

For a power-concentrated EMU, there are generally two grouping modes, namely a single-powered traction mode and a dual-powered traction mode. Among them, the single-power vehicle traction mode is suitable for small passenger traffic scenarios because there is only one power car, and its vehicle structure is “power car + trailer + control car”; and the dual-power vehicle traction mode can be used because it has two power cars. In the case of large passenger traffic, more trailers can be towed, and the structure of the train is "power car + trailer + power car".

These two different grouping modes have different structural requirements for the high-voltage network side circuit of the power car. However, in the prior art, the high-voltage network side circuit of the power car cannot be applied to both of the grouping modes at the same time, or the redundancy protection of the main components in the circuit cannot be taken into consideration, and therefore needs to be improved.

It can be seen that the high-voltage network side circuit of the power car in the EMU is used to realize the flexible grouping in different modes and the redundancy protection of the circuit, thereby improving the flexibility applicability and safety at the same time, which is urgently needed by those skilled in the art. Solved technical problems.

Summary of the invention

The purpose of the application is to provide a high-voltage network side circuit of a power car in an EMU, a control method thereof, a device and a computer readable storage medium, so as to simultaneously realize flexible grouping in different modes and redundancy protection of the circuit, and at the same time Improve flexibility and security.

In order to solve the above technical problem, the present application provides a high-voltage network side circuit of a power vehicle in an EMU, including a plurality of parallel power receiving branches, and a bypass branch for electrically connecting with other power vehicles in the EMU. Road, mode input detection circuit and controller;

Wherein the power receiving branch includes a main breaker and a pantograph installed between the first end of the main breaker and a contact line of the high voltage power grid; the second ends of each of the main breakers are connected to each other, As an output end of each of the power receiving branches connected in parallel, for connecting with a primary winding of the traction transformer of the power vehicle;

The bypass branch includes a high-voltage isolating switch connected to the output end of the power receiving branch at a first end, and the second end of the high-voltage isolating switch serves as a bypass point for use in the driving train The side joints of other power vehicles are connected;

The mode input detecting circuit is configured to detect a mode selection instruction input by a user;

The controller is coupled to the mode input detection circuit and coupled to the main circuit breaker, the pantograph and the high voltage isolation switch, respectively; for selecting a command in the mode to be a dual power vehicle traction mode command And sending a closing command to the high-voltage isolating switch, sending a shutdown command to the high-voltage isolating switch when the mode selection command is a single-power vehicle traction mode command; and controlling any of the power receiving branches to be turned on for outputting power supply .

Optionally, the power receiving branches are two;

The controller is specifically configured to:

Determining whether the pantograph and the main breaker in the first power receiving branch are both faultless;

If yes, sending a lifting command to the pantograph in the first power receiving branch, and sending a closing command to the main circuit breaker in the first power receiving branch; The power receiving branch is turned on to output power;

If not, determining whether the pantograph and the main breaker in the second power receiving branch are faultless; if yes, sending a bow to the pantograph in the second power receiving branch Directing and transmitting a closing command to the main breaker in the second power receiving branch; so that the second power receiving branch is turned on to output power.

Optionally, the bypass point is specifically used to:

The high voltage jumper is connected to the bypass point of other power vehicles in the motor train.

Optionally, the pantograph models in each of the power receiving branches are the same.

The present application also provides a control method for a high-voltage network side circuit of a power car in an EMU, which is applied to the controller in the high-voltage network side circuit as described above, including:

Obtaining a mode input command input by the user; the mode selection instruction includes a dual power vehicle traction mode command or a single power vehicle traction mode command;

Determining whether the mode selection instruction is a dual power vehicle traction mode command;

If yes, sending a closing instruction to the high voltage isolation switch; if not, sending a shutdown command to the high voltage isolation switch;

Controlling any of the power receiving branches to be turned on to output power.

Optionally, the power receiving branches are two;

The controlling any of the power receiving branches to be closed for outputting power includes:

Determining whether the pantograph and the main breaker in the first power receiving branch are faultless;

Optionally, the bypass point is specifically used to:

The application also provides a control device for a high-voltage network side circuit of a power car in an EMU, comprising:

Memory: used to store computer programs;

Processor: The step of executing the computer program to implement the control method of the high voltage grid side circuit of the power car in any of the EMUs as described above.

The present application also provides a computer readable storage medium having stored therein a computer program that, when executed by a processor, implements a high voltage of a power car in any of the EMUs as described above The steps of the control method of the network side circuit.

The high-voltage network side circuit of the power car in the EMU provided by the present application includes a plurality of parallel power receiving branches, a bypass branch for electrically connecting with other power cars in the EMU, and a mode input detecting circuit. And a controller; wherein the power receiving branch includes a main breaker and a pantograph installed between the first end of the main breaker and a high voltage grid contact line; and the second end of each of the main breakers Connected to each other as an output end of each of the power receiving branches connected in parallel for connection with a primary winding of a traction transformer of the power vehicle; the bypass branch includes a first end and the received power a high-voltage isolating switch connected to the output end of the branch, the second end of the high-voltage isolating switch is used as a bypass point for connecting with the side contact point of other power vehicles in the motor train; the mode input detection a circuit for detecting a mode selection command input by a user; the controller being coupled to the mode input detection circuit and coupled to the main circuit breaker, the pantograph and the high voltage isolation switch, respectively; Mode selection And sending a closing command to the high-voltage isolating switch when the dual-power vehicle traction mode command is issued, and sending a shutdown command to the high-voltage isolating switch when the mode selection command is a single-power vehicle traction mode command; and controlling any of the The electrical branch is turned on to output power.

It can be seen that, compared with the prior art, in the high-voltage network side circuit of the power car of the EMU provided by the present application, when multiple sets of parallel power receiving branches are provided to effectively realize redundancy protection of the circuit, The utility model can flexibly adapt to the single-power traction mode and the dual-power traction mode by controlling the on-off of the bypass branch, so the application can effectively improve the flexible applicability and safety of the circuit at the same time. The method, device and computer readable storage medium for controlling the high-voltage network side circuit of the power car in the EMU provided by the present application are applicable to the above-mentioned high-voltage network side circuit, and have the above beneficial effects.

DRAWINGS

In order to more clearly illustrate the technical solutions in the prior art and the embodiments of the present application, a brief description of the drawings in the prior art and the description of the embodiments of the present application will be briefly made. Of course, the following description of the embodiments of the present application is merely a part of the embodiments of the present application. For those skilled in the art, other work can be obtained according to the provided drawings without any creative work. The drawings, the other drawings obtained are also within the scope of protection of the present application.

1 is a structural diagram of a high-voltage network side circuit of a power car in an EMU provided by the present application;

2 is a flow chart of a method for controlling a high-voltage network side circuit of a power car in an EMU provided by the present application.

Detailed ways

The core of the application is to provide a high-voltage network side circuit of a power car in an EMU, a control method thereof, a device and a computer readable storage medium, so as to simultaneously realize flexible grouping in different modes and redundancy protection of the circuit, and at the same time Improve flexibility and security.

For a more complete and complete description of the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. It is apparent that the described embodiments are only a part of the embodiments of the present application, and not all of them. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

Please refer to FIG. 1. FIG. 1 is a structural diagram of a high-voltage network side circuit of a power car in an EMU provided by the present application; and includes a plurality of parallel power receiving branches 1 for use with other power vehicles in the EMU Electrically connected bypass branch 2, mode input detection circuit 3 and controller 4;

The power receiving branch 1 includes a main circuit breaker and a pantograph installed between the first end of the main circuit breaker and the contact line of the high voltage power grid; the second ends of the main circuit breakers are connected to each other as parallel The output end of the power receiving branch 1 is connected to the primary winding of the traction transformer of the power vehicle;

The bypass branch 2 includes a high-voltage isolating switch connected to the output end of the power receiving branch 1 at the first end, and the second end of the high-voltage isolating switch is used as a bypass point for connecting with the bypass point of other power vehicles in the EMU;

The mode input detecting circuit 3 is configured to detect a mode selection instruction input by the user;

The controller 4 is connected to the mode input detecting circuit 3 and coupled to the main circuit breaker, the pantograph and the high voltage isolating switch respectively (as indicated by a broken line in FIG. 1); when the mode selection command is the dual power vehicle traction mode command Sending a closing command to the high-voltage isolating switch, and sending a shutdown command to the high-voltage isolating switch when the mode selection command is the single-power vehicle traction mode command; and controlling any of the power receiving branches 1 to be turned on to output the power supply.

Specifically, for the EMU, the function of the high-voltage network side circuit of the power car is to obtain electric energy from the high-voltage grid side, and supply power to the primary side of the traction transformer to output electric energy from the secondary side of the traction transformer to supply power to the EMU. Conventionally, devices in high voltage grid side circuits typically include pantographs, main breakers, and grounding devices. When the pantograph is raised and the main breaker is closed, the high-voltage grid side is in the path state, and the electric energy can be output backward through the traction transformer; when the pantograph is lowered or the main breaker is disconnected, the high-voltage grid side is in the open state. . Also, in order to achieve arc extinguishing, the main breaker usually needs to be closed after the pantograph is raised, and is disconnected before the pantograph is lowered.

In order to perform redundancy protection on the high-voltage network side circuit, the high-voltage network side circuit provided by the present application specifically sets a plurality of power-receiving branches 1 composed of a pantograph and a main breaker in parallel (only symbolically in FIG. 1) Show two). Since each of the power receiving branches is connected in parallel between the high-voltage network side contact line and the input terminal of the primary winding of the traction transformer, as long as one of the power receiving branches 1 is turned on, the power of the high-voltage network side can smoothly pass through the traction transformer. Output. With the redundancy protection setting, after the pantograph or main breaker in one of the power receiving branches 1 fails, the controller can make other normal power receiving branches 1 conduct, thereby maintaining the train power system. The normal operation.

For each power receiving branch 1, the pantograph is mounted on the high voltage grid contact line and the first end of the main breaker, and when it is raised, the high voltage grid contact line is connected to the first end of the main breaker. The second ends of the main circuit breakers in each of the power receiving branches 1 are short-circuited to each other as the output ends of the respective power receiving branches 1 for being connected to the input ends of the primary windings of the traction transformer of the power car to output electric energy.

Of course, conventionally, in order to monitor, calculate, and control the state of the circuit, those skilled in the art can generally set some devices such as detection or protection in the circuit. For example, a high voltage voltage transformer is arranged in the power receiving branch 1 to monitor the input voltage on the high voltage network side; a high voltage current transformer is arranged between the output end of the power receiving branch 1 and the input end of the primary winding of the traction transformer, In order to monitor the input current of the high-voltage network side; a grounding current transformer is arranged between the output end of the primary winding of the traction transformer and the grounding device to monitor the grounding current of the high-voltage network side; at the output end and the grounding end of the power receiving branch 1 Arresters are placed between them to protect circuit components. The content can be set by a person skilled in the art according to conventional technical means, which is not limited in this application.

On the other hand, as shown in FIG. 1 , in order to ensure that the high-voltage network side circuit of the power vehicle can be applied to both the single-power vehicle traction mode and the dual-power traction mode, the high-voltage network side circuit provided by the present application also includes other The bypass transformer 2 of the electric vehicle's traction transformer is electrically connected. Specifically, the bypass branch 2 mainly includes a high-voltage isolating switch, and the first end of the high-voltage isolating switch is connected to the output end of the power receiving branch 1 of the power vehicle, and the other end is used as a bypass point of the power vehicle, and is used for Connect to the side points of other power cars.

Therefore, when the bypass points of the two power vehicles are connected to each other and the high-voltage isolating switches of the two power vehicles are all in the on state, the primary windings of the traction transformers of the two power vehicles are connected in parallel, and at the same time, the two power vehicles The power receiving branches 1 are also connected in parallel with each other, and the power receiving branch 1 that is normally turned on by any of the two power vehicles can simultaneously supply power to the two power vehicles, that is, the dual power vehicle traction mode is realized. . When only the single-powered vehicle traction mode is required, the high-voltage isolating switch can be disconnected and the connection line between the two power-supplying side points can be cancelled. Therefore, the circuit structure switching in the two grouping modes can be easily realized by the high-voltage network side circuit provided by the present application.

In order to implement the switching in the two grouping modes according to the user's intention, the high-voltage network side circuit provided by the present application further includes a mode input detecting circuit 3 for receiving a mode selection instruction input by the user. When the user selects the single-power vehicle traction mode command, the controller 4 controls the high-voltage isolating switch to be turned off, and then controls any one of the power-receiving branches 1 to be turned on to output the power supply; and when the user completes the connection between the two-powered vehicle side-by-side contacts When the dual power vehicle traction mode command is input, the controller 4 controls the high voltage isolation switch to be turned on, and then controls any one of the power receiving branches 1 to be turned on to output power. As for the mode input detection circuit 3, the person skilled in the art can select a setting, such as a button detection circuit or a switch detection circuit, which is not limited in this application.

It can be seen that the high-voltage network side circuit of the power car in the EMU provided by the present application can effectively realize the redundancy protection of the circuit by setting a plurality of parallel connected power receiving branches 1 , and can also control the bypass branch 2 The continuity of the switch is applicable to the single-power traction mode and the dual-power traction mode, so this application can effectively improve the flexible applicability and safety of the circuit at the same time.

The high-voltage network side circuit of the power car in the EMU provided by the present application is based on the above embodiments:

As a preferred embodiment, the power receiving branch 1 is two;

The controller 4 is specifically used to:

If yes, sending a lifting command to the pantograph in the first power receiving branch, and sending a closing command to the main circuit breaker in the first power receiving branch; so that the first power receiving branch is turned on to output power;

If not, it is determined whether the pantograph and the main breaker in the second power receiving branch are not faulty; if yes, the bowing command is sent to the pantograph in the second power receiving branch, and the second power receiving is performed The main breaker in the branch sends a closing command; so that the second power receiving branch is turned on to output power.

Specifically, two parallel power receiving branches 1 may be provided for the high-voltage network side circuit of each power car, and one of them is preferentially used by default, that is, the first power receiving branch. When any one of the pantograph and the main breaker in the first power receiving branch fails, the second power receiving branch is switched. Moreover, the corresponding fault prompt information can also be generated at the same time, so that the staff can perform maintenance in time.

As mentioned above, when controlling the power-receiving branch 1 to be turned on, the pantograph can be lifted first and then the main breaker can be closed; and when the controlled power-receiving branch is closed, the main breaker can be disconnected first. Then let the pantograph bow down to achieve the purpose of arc extinguishing.

As a preferred embodiment, the bypass point is specifically used to:

The high voltage jumper is connected to the side point of other power vehicles in the EMU.

Specifically, in the dual-power vehicle traction mode, it is necessary to connect the bypass points of the two power vehicles to each other, and specifically, the high-voltage jumper can be realized. Certainly, other connection manners may be used by those skilled in the art, which are not limited in this embodiment of the present application.

As a preferred embodiment, the pantographs in each of the power receiving branches 1 are of the same type.

Specifically, in order to facilitate management and control, and also to reduce variations in circuit parameters and the like when using different power receiving branches 1, it is preferable to use the same type of pantographs in the respective power receiving branches.

The control method of the high-voltage network side circuit of the power car in the EMU provided by the present application is introduced below.

Please refer to FIG. 2. FIG. 2 is a flowchart of a method for controlling a high-voltage network side circuit of a power car in an EMU according to the present application, which is applied to a controller in a high-voltage network side circuit as described in the above embodiment. 4, mainly includes the following steps:

Step 1: Obtain a mode selection instruction input by the user; the mode selection instruction includes a dual power vehicle traction mode command or a single power vehicle traction mode command.

Step 2: Determine whether the mode selection command is a dual power vehicle traction mode command; if yes, proceed to step 3; if not, proceed to step 4.

Step 3: Send a closing command to the high voltage disconnector and proceed to step 5.

Step 4: Send a shutdown command to the high voltage isolation switch and proceed to step 5.

Step 5: Control any power-receiving branch 1 to be turned on to output power.

It is worth noting that when the user selects the dual-power vehicle traction mode, the arbitrary power-receiving branch 1 mentioned in step 5 includes not only any power-receiving branch 1 of the power vehicle, but also any other power-bearing vehicle. Electric branch 1.

It can be seen that, in the control method of the high-voltage network side circuit of the power car in the EMU provided by the embodiment of the present application, by providing a plurality of sets of parallel power receiving branches 1 to effectively realize redundancy protection of the circuit, The control of the bypass of the bypass branch 2 is flexibly applicable to the single-power traction mode and the dual-power traction mode, and therefore the present application can effectively improve the flexible applicability and safety of the circuit.

The control method of the high-voltage network side circuit of the power car in the EMU provided by the present application is based on the above embodiments:

As a preferred embodiment, the power receiving branch 1 is two;

Controlling any of the power receiving branches 1 to be closed so that the output power supply includes:

Determining whether the pantograph and the main breaker in the first power receiving branch are not faulty;

As a preferred embodiment, the bypass point is specifically used to:

Memory: used to store computer programs;

The present application also provides a computer readable storage medium having a computer program stored therein, when executed by a processor, implementing the high voltage network side circuit of the power car in any of the EMUs as described above. The steps of the control method.

The specific method for controlling the high-voltage network side circuit of the power car in the EMU provided by the present application and the computer-readable storage medium can be mutually referenced with the high-voltage network side circuit of the power car in the EMU described above. , I won't go into details here.

The various embodiments in the present application are described in a progressive manner, and each embodiment focuses on differences from other embodiments, and the same similar parts between the various embodiments may be referred to each other. For the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

It should also be noted that in the present application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another entity or operation, without necessarily requiring Or imply any such actual relationship or order between these entities or operations. In addition, the terms "including", "comprising" or "comprising" or "comprising" or "comprising" or "the" Other elements, or elements that are inherent to such a process, method, item, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

The technical solutions provided by the present application are described in detail above. The principles and implementations of the present application have been described in the context of specific examples, and the description of the above embodiments is only to assist in understanding the method of the present application and its core idea. It should be noted that those skilled in the art can make several modifications and changes to the present application without departing from the scope of the present application. These modifications and modifications are also within the scope of the appended claims.

Claims

A high-voltage network side circuit of a power vehicle in an EMU, comprising: a plurality of parallel power receiving branches, a bypass branch for electrically connecting with other power vehicles in the EMU, and mode input detection Circuit and controller;

Wherein the power receiving branch includes a main breaker and a pantograph installed between the first end of the main breaker and a contact line of the high voltage power grid; the second ends of each of the main breakers are connected to each other, As an output end of each of the power receiving branches connected in parallel, for connecting with a primary winding of the traction transformer of the power vehicle;

The bypass branch includes a high-voltage isolating switch connected to the output end of the power receiving branch at a first end, and the second end of the high-voltage isolating switch serves as a bypass point for use in the driving train The side joints of other power vehicles are connected;

The mode input detecting circuit is configured to detect a mode selection instruction input by a user;

The controller is coupled to the mode input detection circuit and coupled to the main circuit breaker, the pantograph and the high voltage isolation switch, respectively; for selecting a command in the mode to be a dual power vehicle traction mode command And sending a closing command to the high-voltage isolating switch, sending a shutdown command to the high-voltage isolating switch when the mode selection command is a single-power vehicle traction mode command; and controlling any of the power receiving branches to be turned on for outputting power supply .
The high-voltage network side circuit according to claim 1, wherein the power receiving branches are two;

The controller is specifically configured to:

Determining whether the pantograph and the main breaker in the first power receiving branch are both faultless;

If yes, sending a lifting command to the pantograph in the first power receiving branch, and sending a closing command to the main circuit breaker in the first power receiving branch; The power receiving branch is turned on to output power;

If not, determining whether the pantograph and the main breaker in the second power receiving branch are faultless; if yes, sending a bow to the pantograph in the second power receiving branch Directing and transmitting a closing command to the main breaker in the second power receiving branch; so that the second power receiving branch is turned on to output power.
The high voltage network side circuit according to claim 2, wherein said side contact is specifically for:

The high voltage jumper is connected to the bypass point of other power vehicles in the motor train.
The high-voltage network side circuit according to any one of claims 1 to 3, characterized in that the pantograph models of the respective power receiving branches are the same.
A control method for a high-voltage network side circuit of a power vehicle in an EMU, which is applied to the controller in the high-voltage network side circuit according to claim 1, characterized in that it comprises:

Obtaining a mode input command input by the user; the mode selection instruction includes a dual power vehicle traction mode command or a single power vehicle traction mode command;

Determining whether the mode selection instruction is a dual power vehicle traction mode command;

If yes, sending a closing instruction to the high voltage isolation switch; if not, sending a shutdown command to the high voltage isolation switch;

Controlling any of the power receiving branches to be turned on to output power.
The control method according to claim 5, wherein the power receiving branches are two;

The controlling any of the power receiving branches to be closed for outputting power includes:

Determining whether the pantograph and the main breaker in the first power receiving branch are faultless;

If yes, sending a lifting command to the pantograph in the first power receiving branch, and sending a closing command to the main circuit breaker in the first power receiving branch; The power receiving branch is turned on to output power;

If not, determining whether the pantograph and the main breaker in the second power receiving branch are faultless; if yes, sending a bow to the pantograph in the second power receiving branch Directing and transmitting a closing command to the main breaker in the second power receiving branch; so that the second power receiving branch is turned on to output power.
The control method according to claim 6, wherein the bypass point is specifically used for:

The high voltage jumper is connected to the bypass point of other power vehicles in the motor train.
The control method according to any one of claims 5 to 7, characterized in that the pantograph models of the respective power receiving branches are the same.
A control device for a high-voltage network side circuit of a power vehicle in an EMU, characterized in that:

Memory: used to store computer programs;

Processor: The step of executing the computer program to implement the control method of the high voltage network side circuit of the power car in the EMU according to any one of claims 5 to 8.
A computer readable storage medium, wherein the computer readable storage medium stores a computer program, the computer program being executed by a processor to implement the motor train set according to any one of claims 5 to 8. The steps of the control method of the high-voltage network side circuit of the power car.