A control device and system

Abstract

The application discloses a control device and system, relates to the field of power electronics, and aims to avoid serious arc extinction phenomena caused by a loop when a pantograph and a steel rail are both connected to the loop. The application increases a vacuum circuit breaker, a voltage detection device, a current detection device, a controller and a steel rail connection condition determination device. The voltage detection device is used to verify whether the pantograph is successfully connected to the loop. The current detection device and the steel rail connection condition determination device are used to verify whether the steel rail is successfully connected to the loop. When the controller determines that the pantograph and the steel rail are both connected to the loop, the vacuum circuit breaker is closed based on the control of an upper computer. Since the vacuum circuit breaker has arc extinction capacity, the serious arc extinction phenomena caused by the connection of the pantograph and the steel rail can be avoided, and the devices in the loop are protected.

Description

Technical Field

[0001] This invention relates to the field of power electronics, and in particular to a control device and system. Background Technology

[0002] For existing rail power systems, there are usually multiple operating conditions. For example, in existing rail power systems, the pantograph that contacts the overhead contact line may be directly connected to the rail under special conditions to form a complete circuit. At this time, once the overhead contact line is controlled by the transformer station in the rail power system to output high voltage and high current electrical energy to the rail through the pantograph, the above circuit will experience severe arcing, which may burn out the components in the entire circuit. Summary of the Invention

[0003] The purpose of this invention is to provide a control device and system. To avoid severe arcing in the circuit when both the pantograph and the rail are connected, this solution adds a vacuum circuit breaker, a voltage detection device, a current detection device, a controller, and a rail connection determination device. The voltage detection device verifies whether the pantograph is successfully connected to the circuit, and the current detection device and the rail connection determination device verify whether the rail is successfully connected to the circuit. When the controller determines that both the pantograph and the rail are connected to the circuit, it will close the vacuum circuit breaker based on the control of the host computer. Because the vacuum circuit breaker has arc extinguishing capability, it can avoid severe arc extinguishing after the pantograph and rail are connected, thus protecting the components in the circuit.

[0004] To solve the above-mentioned technical problems, the present invention provides a control device, comprising: a vacuum circuit breaker, a voltage detection device, a current detection device, a controller, a drive module, and a connection module;

[0005] The first end of the vacuum circuit breaker is connected to the pantograph, and the second end is connected to the first end of the connection module.

[0006] The voltage detection device is connected to the first end of the vacuum circuit breaker and is used to detect the voltage output by the pantograph after the pantograph is connected to the vacuum circuit breaker;

[0007] The drive module is connected to the control terminal of the vacuum circuit breaker;

[0008] The first end of the connection module is connected to the current output module and the second end of the vacuum circuit breaker, the second end is connected to the rail, and the control end is connected to the controller, for connecting the vacuum circuit breaker and the rail based on the control of the controller;

[0009] The current detection device is connected to the second end of the connection module and is used to collect the current output by the current output module after the vacuum circuit breaker is connected to the rail;

[0010] The controller's control terminal is connected to the drive module, and is used to control the vacuum circuit breaker to close based on the voltage and the current through the drive module.

[0011] Optionally, the drive module includes: an air cylinder and a valve plate;

[0012] The first input end of the air cylinder is connected to outside air, and the output end is connected to the first end of the air valve plate.

[0013] The second end of the valve plate is connected to the valve of the vacuum circuit breaker, and the control end is connected to the control end of the controller, for opening or closing accordingly based on the control of the controller.

[0014] Optionally, the drive module further includes: a backup air source and an air pressure detection device;

[0015] The air pressure detection device is installed inside the air cylinder, and its output end is connected to the controller to collect the air pressure value inside the air cylinder.

[0016] The control terminal of the backup air source is connected to the controller, and the output terminal is connected to the second input terminal of the air cylinder. It is used to output gas to the air cylinder based on the control of the controller when the air pressure inside the air cylinder is lower than a preset pressure threshold.

[0017] Optionally, the air pressure detection device is a pressure switch, which is installed inside the air cylinder and its output is connected to the controller to collect the air pressure value inside the air cylinder.

[0018] Optional, also includes:

[0019] The housing, the controller, the drive module, and the connection module are all disposed inside the housing, and a waterproof layer is provided on the inner surface of the housing.

[0020] Optional, also includes:

[0021] An external interface is provided, which is connected to the communication terminal of the controller and the host computer.

[0022] Optionally, the connection module includes: a first switch assembly, a second switch assembly, a top plate, an auxiliary interlocking device, an insulating rotating rod, a bottom plate, a cylinder, an air pipe, a power connection device, a contact, and a high-voltage cable. The first switch assembly, the second switch assembly, and the auxiliary interlocking device are all embedded in the top plate, and the cylinder, the insulating rotating rod, the contact, and the power connection device are all embedded in the bottom plate.

[0023] The first switching assembly is connected to the current output module;

[0024] The second switching assembly is connected to the current sensing device;

[0025] The auxiliary interlocking device is disposed between the first switch assembly and the second switch assembly, and its bottom is connected to the top of the insulating rotating rod. It is used to make the first switch assembly, the auxiliary interlocking device and the second switch assembly form a passage when the auxiliary interlocking device moves to a preset position.

[0026] The bottom of the insulating rotating rod is connected to the output end of the air pipe, and is used to control the rotation based on the gas output from the air pipe and drive the auxiliary interlocking device.

[0027] The output end of the cylinder is connected to the air pipe and the power connection device respectively, and the control end is connected to the controller. It is used to drive the power connection device to contact the rail based on the control of the controller, and to supply air to the air pipe based on the control of the controller.

[0028] The bow head contact end of the power connection device is connected to the rail;

[0029] The contacts are respectively connected to the second end of the vacuum circuit breaker and the first end of the high-voltage cable;

[0030] The second end of the high-voltage cable is connected to the bow head contact end of the power connection device.

[0031] Optionally, the connection module further includes: a first insulating post and a second insulating post, the tops of the first insulating post and the second insulating post being embedded in the top plate, and the bottoms of the first insulating post and the second insulating post being embedded in the bottom plate.

[0032] To solve the above-mentioned technical problems, the present invention also provides a control system, including: a pantograph, a rail, and a control device as described above, wherein the control device is connected to the pantograph and the rail respectively.

[0033] The purpose of this invention is to provide a control device and system. To avoid severe arcing in the circuit when both the pantograph and the rail are connected, this solution adds a vacuum circuit breaker, a voltage detection device, a current detection device, a controller, and a rail connection determination device. The voltage detection device verifies whether the pantograph is successfully connected to the circuit, while the current detection device and the rail connection determination device verify whether the rail is successfully connected to the circuit. When the controller determines that both the pantograph and the rail are connected to the circuit, it will close the vacuum circuit breaker based on the control of the host computer. Because the vacuum circuit breaker has arc extinguishing capability, it can avoid severe arc extinguishing after the pantograph and rail are connected, thus protecting the components in the circuit. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0035] Figure 1 A schematic diagram of the structure of a control device provided by the present invention;

[0036] Figure 2a A schematic diagram of the structure of a high-pressure chamber and a low-pressure chamber provided by the present invention;

[0037] Figure 2b This is a schematic diagram of another high-pressure chamber and low-pressure chamber provided by the present invention;

[0038] Figure 3 A connection diagram of a high-voltage indoor device provided by the present invention;

[0039] Figure 4 A schematic diagram of another control device provided by the present invention. Detailed Implementation

[0040] The core of this invention is to provide a control device and system. To avoid severe arcing in the circuit when both the pantograph and the rail are connected, this solution adds a vacuum circuit breaker, a voltage detection device, a current detection device, a controller, and a rail connection determination device. The voltage detection device verifies whether the pantograph is successfully connected to the circuit, while the current detection device and the rail connection determination device verify whether the rail is successfully connected to the circuit. Once the controller determines that both the pantograph and the rail are connected to the circuit, it will close the vacuum circuit breaker based on the control of the host computer. Because the vacuum circuit breaker has arc-extinguishing capability, it can avoid severe arcing after the pantograph and rail are connected, thus protecting the components in the circuit.

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Please refer to Figure 1 , Figure 1This is a schematic diagram of a control device provided by the present invention. The control device includes: a vacuum circuit breaker 1, a voltage detection device 2, a current detection device 3, a controller 4, a drive module 5, and a connection module 6;

[0043] The first end of the vacuum circuit breaker 1 is connected to the pantograph, and the second end is connected to the first end of the connection module 6.

[0044] The voltage detection device 2 is connected to the first end of the vacuum circuit breaker 1 and is used to detect the voltage output by the pantograph after the pantograph is connected to the vacuum circuit breaker 1.

[0045] Drive module 5 is connected to the control terminal of vacuum circuit breaker 1;

[0046] The first end of the connection module 6 is connected to the current output module and the second end of the vacuum circuit breaker 1 respectively. The second end is connected to the rail. The control end is connected to the controller 4 and is used to connect the vacuum circuit breaker 1 and the rail based on the control of the controller 4.

[0047] The current detection device 3 is connected to the second end of the connection module 6 and is used to collect the current output by the current output module after the vacuum circuit breaker 1 is connected to the rail;

[0048] The control terminal of the controller 4 is connected to the drive module 5, and is used to control the vacuum circuit breaker 1 to close based on voltage and current through the drive module 5.

[0049] In this invention, considering that in existing rail power systems, the pantograph in contact with the overhead contact line may directly connect to the rail and form a complete circuit under special operating conditions, a vacuum circuit breaker 1 is added to prevent severe arcing of the entire circuit due to excessive voltage and current transmitted by the overhead contact line under such special conditions. Through the vacuum arc-extinguishing function of the vacuum circuit breaker 1, the circuit can be disconnected in time when overcurrent or overvoltage occurs, preventing severe arcing of the entire circuit. Furthermore, because the above operating conditions are quite special, in order to accurately control the vacuum circuit breaker 1, it is also necessary to clarify the pantograph and... To verify whether the rail is successfully connected to the circuit, this solution additionally includes a voltage detection device 2, a current detection device 3, a controller 4, a drive module 5, and a connection module 6. The voltage detection device 2 verifies whether the pantograph is successfully connected to the circuit. The current detection device 3 and the rail connection determination device verify whether the rail is successfully connected to the circuit. When the controller 4 determines that both the pantograph and the rail are connected to the circuit, it will close the vacuum circuit breaker 1 based on the control of the host computer. Because the vacuum circuit breaker 1 has arc extinguishing capability, it can avoid severe arc extinguishing after the pantograph is connected to the rail, thus protecting the devices in the circuit.

[0050] This embodiment provides a control device to avoid severe arcing in the circuit when both the pantograph and the rail are connected. This solution includes a vacuum circuit breaker 1, a voltage detection device 2, a current detection device 3, a controller 4, and a rail connection determination device. The voltage detection device 2 verifies whether the pantograph is successfully connected to the circuit, while the current detection device 3 and the rail connection determination device verify whether the rail is successfully connected to the circuit. When the controller 4 determines that both the pantograph and the rail are connected to the circuit, it closes the vacuum circuit breaker 1 based on the control of the host computer. Because the vacuum circuit breaker 1 has arc-extinguishing capabilities, it can prevent severe arcing caused by the connection between the pantograph and the rail, thus protecting the components in the circuit.

[0051] Based on the above embodiments:

[0052] As an optional embodiment, the drive module 5 includes: an air cylinder and a valve plate;

[0053] The first input end of the air cylinder is connected to outside air, and the output end is connected to the first end of the valve plate.

[0054] The second end of the valve plate is connected to the air valve of the vacuum circuit breaker 1, and the control end is connected to the control end of the controller 4, for opening or closing accordingly based on the control of the controller 4.

[0055] In this invention, considering that the function of the drive module 5 is to control the opening and closing of the vacuum circuit breaker 1, and that the vacuum circuit breaker 1 contains a pneumatic switch (i.e., it needs to be driven by gas to control the opening of the vacuum circuit breaker 1), the drive module 5 of this solution includes a cylinder and a valve plate. The function of the cylinder is to output gas absorbed from the outside, while the valve plate is equivalent to a switch. When the controller 4 controls it to open, the valve plate opens, and the gas in the cylinder is output to the pneumatic switch of the vacuum circuit breaker 1 through the open valve plate, pushing the pneumatic switch and closing the vacuum circuit breaker 1. Conversely, if the controller 4 does not control the valve plate to open, the vacuum circuit breaker 1 is closed, ensuring the integrity and accuracy of the solution.

[0056] As an optional embodiment, the drive module 5 also includes: a backup air source and an air pressure detection device;

[0057] The air pressure detection device is installed inside the air cylinder, and its output end is connected to the controller 4 to collect the air pressure value inside the air cylinder.

[0058] The control terminal of the backup air source is connected to the controller 4, and the output terminal is connected to the second input terminal of the air cylinder. It is used to output gas to the air cylinder based on the control of the controller 4 when the air pressure inside the air cylinder is lower than the preset pressure threshold.

[0059] In this invention, considering that the pneumatic switch inside the vacuum circuit breaker 1 requires sufficient gas pressure to open, this solution includes a gas pressure detection device. Its function is to detect the gas pressure inside the air cylinder so that the controller 4 knows whether the gas pressure inside the air cylinder is sufficient to close the vacuum circuit breaker 1. Furthermore, considering that in practical applications there may be insufficient gas pressure inside the air cylinder, if closing the vacuum circuit breaker 1 is required, the gas pressure output to the vacuum circuit breaker 1 needs to be sufficient. Therefore, a backup air source is added. When the gas pressure inside the air cylinder is lower than a preset pressure threshold, the backup air source will output gas to the air cylinder under the control of the controller 4, ensuring that the gas pressure inside the air cylinder is sufficient to close the vacuum circuit breaker 1, thus improving the reliability of the solution.

[0060] As an optional embodiment, the air pressure detection device is a pressure switch, which is installed inside the air cylinder and its output is connected to the controller 4 to collect the air pressure value inside the air cylinder.

[0061] In this invention, because different models of vacuum circuit breakers 1 require different gas pressure values, a pressure switch is selected as the gas pressure detection device to adapt to various models of vacuum circuit breakers 1. Because the pressure switch is adjustable, users can set the working threshold of the pressure switch as needed, thereby adapting to various models of vacuum circuit breakers 1. In addition, the pressure switch also has an alarm function. When the pressure is too high or too low, it can actively issue an alarm to promptly remind the user. In this way, when the pressure switch alarms continuously, the user can determine that the controller 4 is likely to be faulty and repair or replace it in time, thus improving the safety of the solution.

[0062] As an optional embodiment, it also includes:

[0063] The housing, controller 4, drive module 5, and connection module 6 are all housed inside the housing, and a waterproof layer is provided on the inner surface of the housing.

[0064] In this invention, considering that the waterproof capabilities of the controller 4, drive module 5, and connection module 6 are relatively limited, a housing is added to prevent problems with the entire device due to external environmental factors such as rainfall. The controller 4, drive module 5, and connection module 6 are all housed within the housing. Furthermore, a waterproof layer is provided on the inner surface of the housing. This prevents the controller 4, drive module 5, and connection module 6 from malfunctioning due to contact with water, thereby improving the safety and reliability of the solution.

[0065] It should be noted that in practical applications, the controller 4, drive module 5, and connection module 6 are all housed in one enclosure, which can be referred to as the low-voltage chamber, while the vacuum circuit breaker 1, voltage detection device 2, and current detection device 3 are housed in another enclosure, which can be referred to as the high-voltage chamber. The specific structure is as follows: Figure 2a and Figure 2b As shown, the structural schematic diagrams of the vacuum circuit breaker 1, voltage detection device 2, and current detection device 3 in the high-voltage chamber are as follows. Figure 3 As shown.

[0066] It should also be noted that: 1) The control device provided in this solution is a short-time high-current active control device with high and low voltage isolation, which mainly includes a high-voltage chamber and a low-voltage chamber. The high-voltage chamber is used to install the main circuit equipment, and the low-voltage chamber is used to install the control air circuit, control circuit, control system and other equipment.

[0067] 2) The main circuit equipment in the high-voltage room includes vacuum circuit breakers, voltage transformers, current transformers, and high-voltage cables. The selection of these components meets the voltage and current requirements of the project. The high-voltage room is designed with an open structure to facilitate external connection of the main circuit equipment. All of the above equipment is selected for outdoor use to meet waterproof requirements.

[0068] 3) The control equipment in the low-pressure chamber mainly includes controller 4, air cylinder, air valve plate, air pipeline, air interface and control circuit interface. The low-pressure chamber is designed with a closed structure to avoid electromagnetic interference from the high-pressure equipment in the high-pressure chamber from affecting the low-pressure control signal, while ensuring the waterproof requirements of the low-pressure chamber.

[0069] 4) The main circuit principle of the system is as follows: the pantograph is connected to the input terminal of vacuum circuit breaker 1 via a high-voltage cable, the output terminal of vacuum circuit breaker 1 is connected to the rail, a voltage transformer is connected to the input terminal of vacuum circuit breaker 1, and the high-voltage cable passes through a current transformer to detect the voltage and current of the main circuit. The active connection and disconnection of the pantograph and rail is achieved by controlling the opening and closing of vacuum circuit breaker 1. Depending on the actual application requirements, one or two sets of current transformers and high-voltage cables can be selected. The structural diagram of the control device when two sets of current transformers and high-voltage cables are used is shown below. Figure 4 As shown.

[0070] 5) The system control method is to control the gas flow to open and close the vacuum circuit breaker, thereby enabling the pantograph and rail to be actively connected and disconnected.

[0071] Specifically: a) Main circuit connection: External air enters the air cylinder through the air inlet of the low-pressure chamber. The control system controls the air valve plate to open the air passage, allowing gas to enter vacuum circuit breaker 1 and drive it to close, thus connecting the pantograph and the rail. A voltage transformer detects the main circuit voltage, and a current transformer detects the main circuit current to determine if the main circuit is connected. Vacuum circuit breaker 1 is equipped with a feedback signal to determine if it is closed. b) Main circuit disconnection: Controller 4 controls the air valve plate to close the air passage, causing vacuum circuit breaker 1 to disconnect, thus disconnecting the pantograph and the rail. A voltage transformer detects the main circuit voltage, and a current transformer detects the main circuit current to determine if the main circuit is disconnected. Vacuum circuit breaker 1 is equipped with a feedback signal to determine if it is open.

[0072] 6) The above-mentioned air cylinder is equipped with a pressure switch. The set pressure value can be set according to actual needs to ensure sufficient pressure inside the air cylinder. When the pressure is lower than the set pressure value, the pressure switch outputs a signal to the controller 4, and the controller 4 feeds back an external air source to supply air to the air cylinder.

[0073] 7) The above control system is equipped with two control modes: local and remote. Local control is achieved through the buttons on controller 4 and is used for debugging in the absence of power. Remote control is achieved through CAN network transmission and is used for operation in the presence of power.

[0074] As an optional embodiment, it also includes:

[0075] External interfaces are connected to the communication terminal of controller 4 and the host computer, respectively.

[0076] In this invention, considering that the entire control device needs to be applied to the track power system, and for long-distance track power systems, a host computer is needed to uniformly manage the control devices of each section, this solution sets up an external interface, which makes it easier for the controller 4 in the control device to establish a stable communication with the host computer through the external interface, and is more convenient for practical use.

[0077] As an optional embodiment, the connection module 6 includes: a first switch assembly, a second switch assembly, a top plate, an auxiliary interlocking device, an insulating rotating rod, a bottom plate, a cylinder, an air pipe, a power connection device, a contact, and a high-voltage cable. The first switch assembly, the second switch assembly, and the auxiliary interlocking device are all embedded in the top plate, and the cylinder, the insulating rotating rod, the contact, and the power connection device are all embedded in the bottom plate.

[0078] The first switching assembly is connected to the current output module;

[0079] The second switching assembly is connected to the current sensing device 3;

[0080] An auxiliary interlocking device is installed between the first switch assembly and the second switch assembly, with its bottom connected to the top of the insulating rotating rod. It is used to create a circuit between the first switch assembly, the auxiliary interlocking device, and the second switch assembly when the auxiliary interlocking device moves to a preset position.

[0081] The bottom of the insulated rotating rod is connected to the output end of the air tube, and is used to control the rotation based on the gas output from the air tube and drive the auxiliary interlocking device;

[0082] The output end of the cylinder is connected to the air pipe and the power connection device respectively, and the control end is connected to the controller 4. It is used to drive the power connection device to contact the rail based on the control of the controller 4, and to supply air to the air pipe based on the control of the controller 4.

[0083] The bow head contact end of the power connection device is connected to the rail;

[0084] The contacts are respectively connected to the second terminal of the vacuum circuit breaker 1 and the first terminal of the high-voltage cable;

[0085] The second end of the high-voltage cable is connected to the bow head contact end of the power connection device.

[0086] In this invention, considering that the function of the connecting module 6 is to connect the rail, this solution uses the gas output from the cylinder inside the connecting module 6 to drive the power connecting device and the insulating rotating rod respectively. The power connecting device generally extends downward to connect the rail, while the insulating rotating rod drives the auxiliary interlocking device to rotate. When the power connecting device contacts the rail, the auxiliary interlocking device should also rotate to a pre-set angle, forming a circuit with the first switch assembly and the second switch assembly. Because the first switch assembly is connected to the current output module and receives the electrical signal output by the current output module, and the second switch assembly is connected to the current detection device 3, when the connecting module 6 is connected to the rail, the current detection device 3 can collect the current value and transmit it to the controller 4 so that the controller 4 can know the connection status of the rail, ensuring the stability of the solution.

[0087] It should be noted that in practical applications, the current output module can be the controller 4, that is, the electrical signal output terminal of the controller 4 is directly connected to the first switch component and outputs the corresponding electrical signal. In this way, the controller 4 only needs to compare the current value of its own output electrical signal with the current value detected by the current detection device 3 to know whether the connection module 6 has been successfully connected to the rail.

[0088] As an optional embodiment, the connection module 6 further includes: a first insulating post and a second insulating post, the tops of the first insulating post and the second insulating post being embedded in a top plate, and the bottoms of the first insulating post and the second insulating post being embedded in a bottom plate.

[0089] In this invention, considering that the current output module may output a small current, which is a weak current environment, while the cylinder, high-voltage cable and other devices may be in a strong current environment, this solution adds a first insulating post and a second insulating post to isolate the strong and weak current environments, thereby improving the safety of the solution.

[0090] The present invention also provides an embodiment of a control system, comprising: a pantograph, a rail, and a control device as described above, wherein the control device is connected to the pantograph and the rail respectively.

[0091] The control system provided in this embodiment corresponds to the control device described above, and therefore has the same beneficial effects as the control device described above. Therefore, for the embodiment of the control system, please refer to the description of the embodiment of the control device, which will not be repeated here.

[0092] It should be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0093] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A control device, characterized in that, include: Vacuum circuit breakers, voltage detection devices, current detection devices, controllers, drive modules, and connection modules; The first end of the vacuum circuit breaker is connected to the pantograph, and the second end is connected to the first end of the connection module. The voltage detection device is connected to the first end of the vacuum circuit breaker and is used to detect the voltage output by the pantograph after the pantograph is connected to the vacuum circuit breaker; The drive module is connected to the control terminal of the vacuum circuit breaker; The first end of the connection module is connected to the current output module and the second end of the vacuum circuit breaker, the second end is connected to the rail, and the control end is connected to the controller, for connecting the vacuum circuit breaker and the rail based on the control of the controller; The current detection device is connected to the second end of the connection module and is used to collect the current output by the current output module after the vacuum circuit breaker is connected to the rail; The controller's control terminal is connected to the drive module, and is used to control the vacuum circuit breaker to close based on the voltage and the current through the drive module. The drive module includes: an air cylinder and a valve plate; The first input end of the air cylinder is connected to outside air, and the output end is connected to the first end of the air valve plate. The second end of the valve plate is connected to the valve of the vacuum circuit breaker, and the control end is connected to the control end of the controller, for opening or closing accordingly based on the control of the controller. The connection module includes: a first switch assembly, a second switch assembly, a top plate, an auxiliary interlocking device, an insulating rotating rod, a bottom plate, a cylinder, an air pipe, a power connection device, a contact, and a high-voltage cable. The first switch assembly, the second switch assembly, and the auxiliary interlocking device are all embedded in the top plate, and the cylinder, the insulating rotating rod, the contact, and the power connection device are all embedded in the bottom plate. The first switching assembly is connected to the current output module; The second switching assembly is connected to the current sensing device; The auxiliary interlocking device is disposed between the first switch assembly and the second switch assembly, and its bottom is connected to the top of the insulating rotating rod. It is used to make the first switch assembly, the auxiliary interlocking device and the second switch assembly form a passage when the auxiliary interlocking device moves to a preset position. The bottom of the insulating rotating rod is connected to the output end of the air pipe, and is used to control the rotation based on the gas output from the air pipe and drive the auxiliary interlocking device. The output end of the cylinder is connected to the air pipe and the power connection device respectively, and the control end is connected to the controller. It is used to drive the power connection device to contact the rail based on the control of the controller, and to supply air to the air pipe based on the control of the controller. The bow head contact end of the power connection device is connected to the rail; The contacts are respectively connected to the second end of the vacuum circuit breaker and the first end of the high-voltage cable; The second end of the high-voltage cable is connected to the bow head contact end of the power connection device.

2. The control device as described in claim 1, characterized in that, The drive module also includes: a backup air source and an air pressure detection device; The air pressure detection device is installed inside the air cylinder, and its output end is connected to the controller to collect the air pressure value inside the air cylinder. The control terminal of the backup air source is connected to the controller, and the output terminal is connected to the second input terminal of the air cylinder. It is used to output gas to the air cylinder based on the control of the controller when the air pressure inside the air cylinder is lower than a preset pressure threshold.

3. The control device as described in claim 2, characterized in that, The air pressure detection device is a pressure switch, which is installed inside the air cylinder and its output is connected to the controller to collect the air pressure value inside the air cylinder.

4. The control device as described in claim 1, characterized in that, Also includes: The housing, the controller, the drive module, and the connection module are all disposed inside the housing, and a waterproof layer is provided on the inner surface of the housing.

5. The control device as described in claim 1, characterized in that, Also includes: An external interface is provided, which is connected to the communication terminal of the controller and the host computer.

6. The control device as described in claim 1, characterized in that, The connection module further includes: a first insulating post and a second insulating post, the tops of the first insulating post and the second insulating post being embedded in the top plate, and the bottoms of the first insulating post and the second insulating post being embedded in the bottom plate.

7. A control system, characterized in that, include: The pantograph, the rail, and the control device as described in any one of claims 1 to 6, wherein the control device is connected to the pantograph and the rail respectively.

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