High-voltage isolation interlocking protection circuit and method, railway vehicle and train

Abstract

The invention provides a high-voltage isolation interlocking protection circuit and method, a rail vehicle and a train. The circuit comprises a pantograph rising vehicle selection module, a high-voltage isolation switch control module and a high-voltage isolation switch. Wherein the pantograph rising vehicle selection module selects a vehicle needing pantograph rising and generates a selection signal; the high-voltage isolation switch control module generates a high-voltage isolation switch closing instruction under the condition of receiving the selection signal; the high-voltage isolation switch is closed under the condition that the unselected vehicle is in a non-pantograph rising state and receives a high-voltage isolation switch closing instruction, so that the selected vehicle is subjected to pantograph rising; and when the unselected vehicle is in the pantograph rising state, the high-voltage isolation switch closing instruction is not executed, so that the selected vehicle does not rise the pantograph. The circuit is simple in structure, only one of the high-voltage isolating switches of the two vehicles is closed through interlocking logic of the control circuit, the purpose of electrically isolating the two pantographs is achieved, the cost is reduced, and the running safety and reliability of the train are improved.

Description

Technical Field

[0001] The present invention relates to the field of circuits and provides a high-voltage isolation interlocking protection circuit, method, rail vehicle and train. Background Art

[0002] With the rapid development of high-speed railways, the operating speed and traction performance requirements of high-speed trains are constantly increasing. As a key connecting component between the train traction system and the overhead power supply system, the performance of the pantograph has a direct impact on the operating speed and safety of the train. For vehicles in the train, when a single pantograph is running, in order to ensure safety, the two pantographs need to be electrically isolated. In existing technologies, the electrical isolation of pantographs usually relies on complex control logic and multiple electrical components, which not only increases costs, but also increases complexity and failure rate. Summary of the invention

[0003] The embodiment of the present invention provides a high-voltage isolation interlocking protection circuit, method, rail vehicle and train, which are used to solve the problem that the electrical isolation of pantographs in the related art usually relies on complex control logic and multiple electrical components, which not only increases the cost, but also increases the complexity and failure rate. The circuit structure of the present invention is simple. Through the interlocking logic of the control circuit, only one of the high-voltage isolating switches of the two vehicles is closed, so as to achieve the purpose of electrical isolation of the two pantographs, which not only reduces the cost, but also improves the operation safety and reliability of the train.

[0004] The present invention provides a high-voltage isolation interlock protection circuit, comprising: a vehicle selection module for selecting a vehicle that needs to raise the bow and generating a selection signal; a high-voltage isolating switch control module for generating a high-voltage isolating switch closing instruction when the selection signal is received; a high-voltage isolating switch for closing when an unselected vehicle is in a non-raised bow state and receives the high-voltage isolating switch closing instruction, so that the selected vehicle raises the bow; when the unselected vehicle is in a raised bow state, the high-voltage isolating switch closing instruction is not executed, so that the selected vehicle does not raise the bow.

[0005] According to a high-voltage isolation interlock protection circuit provided by the present invention, the bow-raising vehicle selection module is a rotary switch; the rotary switch is used to: in a first state, the vehicle that needs to be raised is selected as the first vehicle, and a first vehicle selection signal is generated; the first state is that the rotary switches of both vehicles are in the first gear position; in a second state, the vehicle that needs to be raised is not selected, and a non-selected vehicle signal is generated; the second state is that the rotary switches of both vehicles are in the second gear position, or the gear positions of the rotary switches of the two vehicles are different; in a third state, the vehicle that needs to be raised is selected as the second vehicle, and a second vehicle selection signal is generated; the third state is that the rotary switches of both vehicles are in the third gear position.

[0006] According to a high-voltage isolation interlock protection circuit provided by the present invention, the high-voltage isolation switch control module is a traction inverter; the input end of the traction inverter is used to receive the selection signal, and the output end of the traction inverter is used to output the high-voltage isolation switch closing instruction to the normally closed auxiliary contact of the unselected vehicle.

[0007] According to a high-voltage isolation interlock protection circuit provided by the present invention, the high-voltage isolating switch includes a main contact, a normally closed auxiliary contact and a signal receiving end; when the unselected vehicle is in a non-raised state, the normally closed contact of the unselected vehicle is closed; the signal receiving end of the selected vehicle is used to receive the isolating switch closing instruction when the normally closed auxiliary contact of the unselected vehicle is closed; the normally closed auxiliary contact of the selected vehicle is used to disconnect according to the isolating switch closing instruction to close the high-voltage isolating switch of the selected vehicle; the main contact of the selected vehicle is used to control the power supply to the selected vehicle to raise the bow when the normally closed auxiliary contact of the selected vehicle is disconnected.

[0008] According to a high-voltage isolation interlock protection circuit provided by the present invention, when the unselected vehicle is in a bow-raising state, the normally closed contact of the unselected vehicle is disconnected; the signal receiving end of the selected vehicle is also used for not receiving the isolating switch closing instruction when the normally closed auxiliary contact of the unselected vehicle is disconnected; the normally closed auxiliary contact of the selected vehicle is also used for closing without executing the isolating switch closing instruction to disconnect the high-voltage isolating switch of the selected vehicle; the main contact of the selected vehicle is also used for controlling the power supply not to supply power to the selected vehicle when the normally closed auxiliary contact of the selected vehicle is closed.

[0009] According to a high-voltage isolation interlock protection circuit provided by the present invention, the high-voltage isolation switch is also used for not performing a closing action when the vehicle selection module for raising the bow does not select a vehicle that needs to raise the bow.

[0010] A high-voltage isolation interlock protection circuit provided according to the present invention further includes a prompt module; the prompt module is used to prompt the state of the high-voltage isolation switch.

[0011] A high-voltage isolation interlock protection circuit provided according to the present invention further includes an emergency disconnect module; the emergency disconnect module is used to control the high-voltage isolation switch to disconnect in the event of a vehicle failure.

[0012] A high-voltage isolation interlock protection circuit provided according to the present invention also includes an interaction module; the interaction module is used to determine the user's vehicle bow raising instruction; the vehicle bow raising instruction is used to control the state of the bow raising vehicle selection module.

[0013] The present invention also provides a high-voltage isolation interlock protection method, comprising: selecting a vehicle that needs to be raised through a bow-raising vehicle selection module, and generating a selection signal; the high-voltage isolating switch control module generates a high-voltage isolating switch closing instruction when receiving the selection signal; the high-voltage isolating switch is closed when an unselected vehicle is in a non-raised state and receives the high-voltage isolating switch closing instruction, so that the selected vehicle is raised; when the unselected vehicle is in a raised state, the high-voltage isolating switch closing instruction is not executed, so that the selected vehicle is not raised.

[0014] The present invention also provides a rail vehicle, comprising the above-mentioned high-voltage isolation interlocking protection circuit.

[0015] The present invention also provides a train, comprising the above-mentioned rail vehicle.

[0016] The present invention provides a high-voltage isolation interlocking protection circuit, method, rail vehicle and train, the circuit includes a pantograph raising vehicle selection module, a high-voltage isolating switch control module and a high-voltage isolating switch. The pantograph raising vehicle selection module selects the vehicle that needs to raise the pantograph and generates a selection signal; the high-voltage isolating switch control module generates a high-voltage isolating switch closing instruction when receiving the selection signal; the high-voltage isolating switch is closed when the unselected vehicle is in a non-pantograph raising state and receives the high-voltage isolating switch closing instruction, so that the selected vehicle raises the pantograph; when the unselected vehicle is in a pantograph raising state, the high-voltage isolating switch closing instruction is not executed, so that the selected vehicle does not raise the pantograph. The circuit structure of the present invention is simple, and through the interlocking logic of the control circuit, it is realized that only one of the high-voltage isolating switches of the two vehicles is closed, so as to achieve the purpose of electrical isolation of the two pantographs, which not only reduces the cost, but also improves the operation safety and reliability of the train. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a structural schematic diagram of the high-voltage isolation interlocking protection circuit provided by the present invention.

[0019] Figure 2 It is a schematic diagram of the principle of the high-voltage isolation interlock protection circuit provided by the present invention.

[0020] Figure 3 It is a flow chart of the high-voltage isolation interlocking protection method provided by the present invention.

[0021] Figure 4 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0022] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] In recent years, with the development of high-speed railways, the speed of trains has continued to rise, and the performance requirements for train traction have also increased. As a bridge connecting the power grid and the train power system, the operating status of the pantograph directly affects the increase in the speed of the EMU. For vehicles in the train, when a single pantograph is running, in order to ensure safety, the two pantographs need to be electrically isolated. In existing technologies, the electrical isolation of pantographs usually relies on complex control logic and multiple electrical components, which not only increases costs, but also increases complexity and failure rates.

[0024] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of the high-voltage isolation interlock protection circuit provided by the present invention.

[0025] In order to solve the technical problems existing in the prior art, the present invention provides a high-voltage isolation interlock protection circuit, including: a bow-raising vehicle selection module 1, used to select a vehicle that needs to raise the bow and generate a selection signal; a high-voltage isolating switch control module 2, used to generate a high-voltage isolating switch closing instruction when receiving the selection signal; a high-voltage isolating switch 3, used to close when an unselected vehicle is in a non-bow-raising state and receives a high-voltage isolating switch closing instruction, so that the selected vehicle raises the bow; when the unselected vehicle is in a bow-raising state, the high-voltage isolating switch closing instruction is not executed, so that the selected vehicle does not raise the bow.

[0026] In this embodiment, the high-voltage isolation interlock protection circuit includes a pantograph raising vehicle selection module 1, a high-voltage isolating switch control module 2 and a high-voltage isolating switch 3. Among them, the pantograph raising vehicle selection module 1 selects the vehicle that needs to raise the pantograph according to the needs of train operation and generates a selection signal. The high-voltage isolating switch control module 2 receives the selection signal from the pantograph raising vehicle selection module 1 and generates a corresponding high-voltage isolating switch closing instruction according to the selection signal. The high-voltage isolating switch 3 is closed or remains in an open state according to the high-voltage isolating switch closing instruction issued by the high-voltage isolating switch control module 2. The design of the high-voltage isolating switch 3 must be able to withstand high voltage and high current, ensure that it can stably transmit power when closed, and can safely isolate power when disconnected. When the unselected vehicle is in a non-pantograph raising state and receives a high-voltage isolating switch closing instruction, the high-voltage isolating switch 3 of the selected vehicle is closed, allowing the selected vehicle to raise the pantograph and obtain power from the contact network. If the unselected vehicle has already raised the pantograph, even if the high-voltage isolating switch closing instruction is received, the high-voltage isolating switch 3 of the selected vehicle will not be closed, and the selected vehicle will not raise the pantograph, thereby preventing the unraised pantograph from being accidentally energized and avoiding possible electrical failures or accidents.

[0027] The high-voltage isolation interlocking protection circuit of the present invention has a simple circuit structure and can ensure that vehicles in the electrified railway system can obtain power safely and efficiently. Through precise vehicle selection and the interlocking logic of the control circuit, only one of the high-voltage isolating switches 3 of the two vehicles is closed, so as to achieve the purpose of electrical isolation of the two pantographs, which not only reduces the cost, reduces the complexity and potential risks of the power system, but also improves the reliability and safety of train operation.

[0028] In addition, the circuit can also be integrated with other train monitoring systems (such as train control systems, fault diagnosis systems) to achieve more advanced monitoring and control functions, such as remote control, automatic fault detection and diagnosis, etc. This integrated design further improves the automation level and maintenance efficiency of train operation.

[0029] Please refer to Figure 2 , Figure 2 This is a schematic diagram of the principle of the high-voltage isolation interlock protection circuit provided by the present invention.

[0030] As a preferred embodiment, the bow raising vehicle selection module 1 is a rotary switch; the rotary switch is used to: in the first state, select the vehicle that needs to be raised as the first vehicle, and generate a first vehicle selection signal; the first state is that the rotary switches of both vehicles are in the first gear position; in the second state, no vehicle that needs to be raised is selected, and a non-selected vehicle signal is generated; the second state is that the rotary switches of both vehicles are in the second gear position, or the gear positions of the rotary switches of the two vehicles are different; in the third state, select the vehicle that needs to be raised as the second vehicle, and generate a second vehicle selection signal; the third state is that the rotary switches of both vehicles are in the third gear position.

[0031] In this embodiment, the pantograph raising vehicle selection module 1 is a three-position switch (SAEDS, Switch for Alternating Electric Drive Systems) set in the electrical cabinet, and each position corresponds to a different function. The design of the rotary switch allows the train operator to manually select which vehicle should raise the pantograph according to the operation requirements.

[0032] When the rotary switches of the two vehicles are both set to the first gear, the generated first vehicle selection signal is a signal for selecting the first vehicle to raise the bow. After receiving the first vehicle selection signal, the high-voltage isolating switch control module 2 will start the high-voltage isolating switch 3 control logic and only allow the high-voltage isolating switch 3 of the first vehicle to be closed.

[0033] When the rotary switches of the two vehicles are both set to the second gear, or the gears of the rotary switches of the two vehicles are different, the generated unselected vehicle signal is a signal that does not select any vehicle to raise the bow. After receiving the unselected vehicle signal, the high-voltage disconnector control module 2 will maintain the current state of all high-voltage disconnectors 3 and will not perform any closing or opening operations.

[0034] When the rotary switches of the two vehicles are both set to the third gear, the second vehicle selection signal generated is a signal for selecting the second vehicle to raise the bow. After receiving the second vehicle selection signal, the high-voltage isolating switch control module 2 will start the high-voltage isolating switch 3 control logic and only allow the high-voltage isolating switch 3 of the second vehicle to be closed.

[0035] Through this rotary switch design, the high-voltage isolation interlock protection circuit provides a simple and intuitive way to control the pantograph raising operation in a multi-vehicle marshaling. The operator can intuitively understand which car is currently selected for pantograph raising through the physical position of the rotary switch, while ensuring the safety and reliability of the operation.

[0036] In addition, the design of the rotary switch also allows for quick switching of the pantograph raising vehicle in an emergency, improving the system's flexibility and ability to respond to emergencies. For example, if the first vehicle fails to raise the pantograph due to a malfunction, the operator can immediately switch to the third gear and select another vehicle to raise the pantograph, thus ensuring the continuous operation of the train.

[0037] In short, this high-voltage isolation interlock protection circuit using a rotary switch not only improves the convenience and safety of train operation, but also provides a strong guarantee for the stable operation of electrified railways through its intuitive design and reliable control logic.

[0038] As a preferred embodiment, the high-voltage disconnect switch control module 2 is a traction inverter; the input end of the traction inverter is used to receive a selection signal, and the output end of the traction inverter is used to output a high-voltage disconnect switch closing instruction to the normally closed auxiliary contacts of an unselected vehicle.

[0039] In this embodiment, the high-voltage disconnect switch control module 2 is a traction converter. The traction converter is not only responsible for converting high-voltage AC into an electric energy form suitable for the traction motor, but also controls the closing of the high-voltage disconnect switch 3. The traction converter includes multiple power semiconductor devices, such as IGBT (Insulated Gate Bipolar Transistor) or IGCT (Integrated Gate Commutated Thyristor), which can efficiently convert AC to DC (AC / DC, Alternating Current / Direct Current) or DC to AC (DC / AC, Direct Current / Alternating Current). The traction converter also integrates control logic for receiving the selection signal of the lifting vehicle selection module 1 and outputting a high-voltage disconnect switch closing instruction to the normally closed auxiliary contacts of the unselected vehicle. This high-voltage disconnect switch closing instruction can be a high-level signal for triggering the closing mechanism of the high-voltage disconnect switch 3.

[0040] The present invention simplifies the circuit architecture, reduces the additional hardware requirements, and improves the reliability of the system and the convenience of maintenance. In addition, the integrated control logic of the traction converter can respond to the selection signal changes of the pantograph vehicle selection module 1 in real time, ensuring the accurate and timely control of the high-voltage disconnector 3, thereby ensuring the safe and efficient operation of the electrified railway system.

[0041] As a preferred embodiment, the high-voltage isolating switch 3 includes a main contact, a normally closed auxiliary contact and a signal receiving end; when an unselected vehicle is in a non-raised state, the normally closed contact of the unselected vehicle is closed; the signal receiving end of the selected vehicle is used to receive an isolating switch closing instruction when the normally closed auxiliary contact of the unselected vehicle is closed; the normally closed auxiliary contact of the selected vehicle is used to disconnect according to the isolating switch closing instruction to close the high-voltage isolating switch 3 of the selected vehicle; the main contact of the selected vehicle is used to control the power supply to the selected vehicle to raise the bow when the normally closed auxiliary contact of the selected vehicle is disconnected.

[0042] As a preferred embodiment, when the unselected vehicle is in the bow raising state, the normally closed contacts of the unselected vehicle are disconnected; the signal receiving end of the selected vehicle is also used for not receiving the isolating switch closing instruction when the normally closed auxiliary contacts of the unselected vehicle are disconnected; the normally closed auxiliary contacts of the selected vehicle are also used for closing without executing the isolating switch closing instruction, so that the high-voltage isolating switch 3 of the selected vehicle is disconnected; the main contacts of the selected vehicle are also used for controlling the power supply not to supply power to the selected vehicle when the normally closed auxiliary contacts of the selected vehicle are closed.

[0043] The high-voltage disconnect switch 3 (EDS, Electrical Disconnect Switch) includes a main contact, a normally closed auxiliary contact and a signal receiving end. The high-voltage disconnect switch 3 can be set in a high-voltage box (high-voltage electrical box). Among them, the signal receiving end is used to receive the high-voltage disconnect switch closing instruction from the traction inverter to determine the closing or opening of the high-voltage disconnect switch 3. The normally closed auxiliary contact is used to determine whether the unselected vehicle is in a non-raised state. The normally closed auxiliary contact is closed for the high-voltage disconnect switch 3 of the selected vehicle to be opened, and the normally closed auxiliary contact is opened for the high-voltage disconnect switch 3 of the selected vehicle to be closed. The main contact is responsible for controlling the on and off of the current in the high-voltage circuit, which is directly related to the pantograph raising operation to achieve electrical isolation of the pantograph.

[0044] In this embodiment, to close one of the high-voltage disconnectors 3 of the two vehicles, the knob switches of the two vehicles need to be rotated to the first gear position or the third gear position. In other cases, the two vehicles cannot be closed.

[0045] If the pantograph of the first vehicle is raised, the high-voltage disconnector 3 of the first vehicle (the selected vehicle) needs to be closed, that is, the knob switches of the two vehicles need to be rotated to the first gear. The input end of the traction inverter of the first vehicle receives a high level (selection signal), and the output end outputs a high level (high-voltage disconnector closing instruction).

[0046] If the normally closed auxiliary contact of the high-voltage disconnector 3 of the second vehicle (unselected vehicle) is closed, the high level output by the output end of the traction inverter of the first vehicle returns to the signal receiving end of the high-voltage box of the first vehicle through the normally closed auxiliary contact of the high-voltage box of the second vehicle. After receiving the high level, the signal receiving end of the high-voltage box of the first vehicle closes the high-voltage disconnector 3 of the first vehicle.

[0047] If the normally closed auxiliary contact of the high-voltage disconnector 3 of the second vehicle is disconnected, the high level outputted from the output end of the traction inverter of the first vehicle cannot return to the signal receiving end of the high-voltage box of the first vehicle through the normally closed auxiliary contact of the high-voltage box of the second vehicle. The signal receiving end of the high-voltage box of the first vehicle receives a low level, and the high-voltage disconnector 3 of the first vehicle does not execute the high-voltage disconnector closing command, and the main contact control power supply does not supply power to the first vehicle.

[0048] In this embodiment, if the pantograph of the second vehicle is raised, the high-voltage disconnector 3 of the second vehicle (the selected vehicle) needs to be closed, that is, the knob switches of the two vehicles need to be rotated to the third gear. The input end of the traction inverter of the second vehicle receives a high level (selection signal), and the output end outputs a high level (high-voltage disconnector closing instruction).

[0049] If the normally closed auxiliary contact of the high-voltage disconnector 3 of the first vehicle (unselected vehicle) is closed, the high level output by the output end of the traction inverter of the second vehicle returns to the signal receiving end of the high-voltage box of the second vehicle through the normally closed auxiliary contact of the high-voltage box of the first vehicle. After receiving the high level, the signal receiving end of the high-voltage box of the second vehicle closes the high-voltage disconnector 3 of the second vehicle.

[0050] If the normally closed auxiliary contact of the high-voltage disconnector 3 of the first vehicle is disconnected, the high level outputted by the output end of the traction inverter of the second vehicle cannot return to the signal receiving end of the high-voltage box of the second vehicle through the normally closed auxiliary contact of the high-voltage box of the first vehicle. The signal receiving end of the high-voltage box of the second vehicle receives a low level, and the high-voltage disconnector 3 of the second vehicle does not execute the high-voltage disconnector closing command, and the main contact control power supply does not supply power to the second vehicle.

[0051] As a preferred embodiment, the high-voltage disconnector 3 is also used for not performing a closing action when the pantograph-raising vehicle selection module 1 does not select a vehicle that needs to raise the pantograph.

[0052] In this embodiment, the knob switches of the two vehicles are rotated to the second gear position, or rotated to different gear positions, and the input ends of the traction inverters of the two vehicles cannot receive a high level, indicating that the knob switch has not selected the vehicle that needs to be raised, and the high-voltage isolating switches 3 of the two vehicles do not perform the closing action, and the power supply does not need to supply power to the two vehicles.

[0053] As a preferred embodiment, it also includes a prompt module; the prompt module is used to prompt the state of the high-voltage disconnect switch 3.

[0054] In this embodiment, the high-voltage isolation interlock protection circuit also includes a prompt module, which is used to provide the operator with real-time status information of the high-voltage isolation switch 3, thereby enhancing the user's interactivity and the convenience of operation, ensuring that the operator can accurately grasp the operating status of the circuit, make corresponding operation decisions in time, and reduce operation errors caused by misunderstanding the system status. The prompt module can prompt the operator of the status of the high-voltage isolation switch 3 through visual and / or auditory signals. The prompt module can be a status indicator light, a display screen, and a sound prompt unit.

[0055] The status indicator light may be a group of LED (Light Emitting Diode) lights, which are used to display the current state of the high-voltage disconnect switch 3. For example, a green LED indicates that the switch is closed, a red LED indicates that the switch is open, and a yellow LED indicates that the circuit is waiting for a closing instruction.

[0056] The display screen may be an LCD (Liquid Crystal Display) or LED display screen or OLED (Organic Light Emitting Diode) display screen for displaying more detailed status information, such as "waiting for closing instruction", "closing", "closing completed", etc.

[0057] The sound prompt unit can issue sound prompts during key operations or status changes, such as receiving a closing instruction, completing switch closing, etc.

[0058] As a preferred embodiment, it also includes an emergency disconnect module; the emergency disconnect module is used to control the high-voltage disconnect switch 3 to disconnect in the event of a vehicle failure.

[0059] In this embodiment, the high-voltage isolation interlock protection circuit also includes an emergency disconnection module, which is used to quickly cut off the high-voltage disconnector 3 when a vehicle fault is detected to ensure safety, improve the safety and reliability of the electrified railway system, and prevent the fault from spreading to other vehicles or systems. The emergency disconnection module automatically determines whether it is necessary to emergency disconnect the high-voltage disconnector 3 by monitoring key parameters of the vehicle such as temperature, current, voltage, etc., as well as the operating status of the vehicle.

[0060] As a preferred embodiment, it also includes an interaction module; the interaction module is used to determine the user's vehicle raising command; the vehicle raising command is used to control the state of the raising vehicle selection module 1.

[0061] In this embodiment, the high-voltage isolation interlock protection circuit also includes an interaction module for receiving and processing the user's vehicle bow raising command. This interaction module is a bridge for communication between the circuit and the user, ensuring that the user's vehicle bow raising command can accurately affect the state of the bow raising vehicle selection module 1, thereby controlling the vehicle bow raising operation. The interaction module allows the user to input the vehicle bow raising command through an intuitive interface (a touch screen or a button panel).

[0062] The high-voltage isolation interlock protection method provided by the present invention is described below. The high-voltage isolation interlock protection method described below and the high-voltage isolation interlock protection circuit described above can be referred to each other.

[0063] Please refer to Figure 3 , Figure 3A schematic flow chart of the high-voltage isolation interlocking protection method provided by the present invention.

[0064] The present invention also provides a high-voltage isolation interlocking protection method, comprising: 301: Selecting a vehicle that needs to be raised through the vehicle selection module 1, and generating a selection signal; 302: The high-voltage isolating switch control module 2 generates a high-voltage isolating switch closing instruction when receiving the selection signal; 303: The high-voltage isolating switch 3 is closed when the unselected vehicle is in the non-raised state and receives the high-voltage isolating switch closing command, so that the selected vehicle raises the bow; when the unselected vehicle is in the raised bow state, the high-voltage isolating switch closing command is not executed, so that the selected vehicle does not raise the bow.

[0065] The rail vehicle provided by the present invention is described below. The rail vehicle described below and the high-voltage isolation interlocking protection circuit described above can be referred to each other.

[0066] The present invention also provides a rail vehicle, comprising the above-mentioned high-voltage isolation interlocking protection circuit.

[0067] The train provided by the present invention is described below. The train described below and the high-voltage isolation interlocking protection circuit described above can be referenced to each other.

[0068] The present invention also provides a train, comprising the above-mentioned rail vehicle.

[0069] Figure 4 The schematic diagram of the structure of the electronic device is shown as an example. Figure 4 As shown, the electronic device may include: a processor 410 (processor), a communication interface 420 (Communications Interface), a memory 430 (memory) and a communication bus 440, wherein the processor 410, the communication interface 420, and the memory 430 complete mutual communication through the communication bus 440. The processor 410 may call the logic instructions in the memory 430 to execute the high-voltage isolation interlock protection method, including: selecting a vehicle that needs to be raised through the bow raising vehicle selection module 1, and generating a selection signal; the high-voltage isolation switch control module 2 generates a high-voltage isolation switch closing instruction when receiving the selection signal; the high-voltage isolation switch 3 is closed when the unselected vehicle is in a non-raised bow state and receives the high-voltage isolation switch closing instruction, so that the selected vehicle is raised; when the unselected vehicle is in a raised bow state, the high-voltage isolation switch closing instruction is not executed, so that the selected vehicle is not raised.

[0070] In addition, the logic instructions in the above-mentioned memory 430 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present invention, or the part that contributes to the relevant technology or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0071] An embodiment of the present invention discloses a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the high-voltage isolation interlock protection method provided by the above-mentioned method embodiments, including: selecting a vehicle that needs to be raised through a bow-raising vehicle selection module 1, and generating a selection signal; the high-voltage isolating switch control module 2 generates a high-voltage isolating switch closing instruction when receiving the selection signal; the high-voltage isolating switch 3 is closed when an unselected vehicle is in a non-raised bow state and receives a high-voltage isolating switch closing instruction, so that the selected vehicle raises the bow; when the unselected vehicle is in a raised bow state, the high-voltage isolating switch closing instruction is not executed, so that the selected vehicle does not raise the bow.

[0072] On the other hand, an embodiment of the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, it is implemented to execute the high-voltage isolation interlock protection method provided in the above-mentioned embodiments, including: selecting a vehicle that needs to be raised through the bow-raising vehicle selection module 1, and generating a selection signal; the high-voltage isolating switch control module 2 generates a high-voltage isolating switch closing instruction when receiving the selection signal; the high-voltage isolating switch 3 is closed when an unselected vehicle is in a non-raised bow state and receives a high-voltage isolating switch closing instruction, so that the selected vehicle raises the bow; when the unselected vehicle is in a raised bow state, the high-voltage isolating switch closing instruction is not executed, so that the selected vehicle does not raise the bow.

[0073] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0074] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the relevant technology can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiment.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high voltage isolation interlock protection circuit, characterized in that: include: A vehicle selection module for raising the bow is used to select a vehicle that needs to raise the bow and generate a selection signal; A high-voltage isolating switch control module, configured to generate a high-voltage isolating switch closing instruction upon receiving the selection signal; The high-voltage isolating switch is used to close when an unselected vehicle is in a non-raised bow state and receives a closing instruction of the high-voltage isolating switch, so that the selected vehicle raises the bow; when the unselected vehicle is in a raised bow state, the closing instruction of the high-voltage isolating switch is not executed, so that the selected vehicle does not raise the bow.

2. The high voltage isolation interlock protection circuit according to claim 1, characterized in that: The lifting vehicle selection module is a rotary switch; the rotary switch is used to: In the first state, the vehicle that needs to be raised is selected as the first vehicle, and a first vehicle selection signal is generated; the first state is that the rotary switches of the two vehicles are both in the first gear position; In the second state, no vehicle that needs to be raised is selected, and a vehicle-not-selected signal is generated; the second state is that the rotary switches of the two vehicles are both in the second gear position, or the gear positions of the rotary switches of the two vehicles are different; In the third state, the vehicle that needs to raise the bow is selected as the second vehicle, and a second vehicle selection signal is generated; the third state is a state in which the rotary switches of the two vehicles are both in the third gear position.

3. The high voltage isolation interlock protection circuit according to claim 1, characterized in that: The high-voltage isolating switch control module is a traction inverter; the input end of the traction inverter is used to receive the selection signal, and the output end of the traction inverter is used to output the high-voltage isolating switch closing instruction to the normally closed auxiliary contact of the unselected vehicle.

4. The high-voltage isolation interlock protection circuit according to claim 3, characterized in that: The high-voltage isolating switch comprises a main contact, a normally closed auxiliary contact and a signal receiving terminal; The unselected vehicle is in a non-raised state, and the normally closed contact of the unselected vehicle is closed; The signal receiving end of the selected vehicle is used to receive the disconnect switch closing instruction when the normally closed auxiliary contact of the unselected vehicle is closed; The normally closed auxiliary contact of the selected vehicle is used to open according to the disconnector closing instruction, so that the high-voltage disconnector of the selected vehicle is closed; The main contact of the selected vehicle is used to control the power supply to the selected vehicle when the normally closed auxiliary contact of the selected vehicle is disconnected.

5. The high voltage isolation interlock protection circuit according to claim 4, characterized in that: The unselected vehicle is in the raised state, and the normally closed contact of the unselected vehicle is disconnected; The signal receiving end of the selected vehicle is also used for not receiving the disconnector closing instruction when the normally closed auxiliary contact of the unselected vehicle is disconnected; The normally closed auxiliary contact of the selected vehicle is also used to close without executing the disconnector closing instruction, so that the high-voltage disconnector of the selected vehicle is disconnected; The main contact of the selected vehicle is also used to control the power supply not to supply power to the selected vehicle when the normally closed auxiliary contact of the selected vehicle is closed.

6. The high-voltage isolation interlock protection circuit according to claim 1, characterized in that: The high-voltage isolating switch is also used for not performing a closing action when the vehicle that needs to raise the bow is not selected by the bow raising vehicle selection module.

7. The high voltage isolation interlock protection circuit according to claim 1, characterized in that: It also includes a prompt module; the prompt module is used to prompt the state of the high-voltage disconnector.

8. The high voltage isolation interlock protection circuit according to claim 1, characterized in that: It also includes an emergency disconnect module; the emergency disconnect module is used to control the high-voltage disconnect switch to disconnect in the event of a vehicle failure.

9. The high voltage isolation interlock protection circuit according to claim 1, characterized in that: It also includes an interaction module; the interaction module is used to determine the user's vehicle raising command; the vehicle raising command is used to control the state of the raising vehicle selection module.

10. A high voltage isolation interlocking protection method, characterized in that: include: The vehicle that needs to be raised is selected through the vehicle selection module, and a selection signal is generated; The high-voltage isolating switch control module generates a high-voltage isolating switch closing instruction when receiving the selection signal; The high-voltage isolating switch is closed when the unselected vehicle is in a non-raised state and receives a closing command of the high-voltage isolating switch, so that the selected vehicle raises the bow; when the unselected vehicle is in a raised bow state, the closing command of the high-voltage isolating switch is not executed, so that the selected vehicle does not raise the bow.

11. A rail vehicle, characterized in that: It comprises a high-voltage isolation interlock protection circuit as described in any one of claims 1 to 9.

12. A train, characterized in that: Comprising the rail vehicle of claim 11.

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