Valve control and sub-module multiplex communication device

Abstract

The embodiment of the present application provides a valve control and sub-module multi-path communication device, which comprises at least one valve control, at least two pulse boxes and a corresponding sub-module group of each pulse box; each sub-module group comprises at least one sub-module; each valve control is in communication connection with each pulse box; each pulse box is in communication connection with each corresponding sub-module group; each valve control is used for sending a control command to each sub-module group through each pulse box; each sub-module group is also used for sending a control command to a sub-module group in communication connection therewith, receiving second feedback information corresponding to the control command sent by the sub-module group in communication connection therewith and sending the second feedback information corresponding to the control command to each valve control through each pulse box. The device of the embodiment of the present application realizes multi-path redundant communication between the valve control and the sub-module, and improves the stability of the operation of the converter valve.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of communication technology, and in particular to a valve control and submodule multi-channel communication device. Background Technology

[0002] In the flexible DC transmission technology of modular multilevel converters, the converter valve system consists of several cascaded sub-modules. Each sub-module communicates point-to-point with the valve controller of the converter valve. The valve controller can send control commands to the sub-modules and receive relevant information returned by the sub-modules.

[0003] In existing converter valve systems, the valve controller is connected to each submodule via a pulse board through optical fiber. If one pulse board fails, all submodules connected to that board will cease to function. Furthermore, if any fiber optic cable between a submodule and the valve controller fails, the submodule controlled by that cable will report the communication failure, causing a significant negative impact on the stable operation of the entire converter valve. Summary of the Invention

[0004] This invention provides a valve control and submodule multi-channel communication device, which can realize multi-channel redundant communication between valve control and submodule, thereby improving the stability of converter valve operation.

[0005] In a first aspect, embodiments of the present invention provide a valve control and submodule multi-channel communication device, the valve control and submodule multi-channel communication device comprising: at least one valve control, at least two pulse boxes, and submodule groups corresponding to each pulse box; each submodule group includes at least one submodule; each valve control is communicatively connected to each pulse box; each pulse box is communicatively connected to its corresponding submodule groups.

[0006] Each valve control is used to send control commands to each submodule group through each pulse box;

[0007] Each submodule group is used to receive the control command; and send the first feedback information corresponding to the control command to each valve controller through each pulse box; and is also used to send the control command to the submodule group it communicates with; receive the second feedback information corresponding to the control command sent by the submodule group it communicates with; and send the second feedback information corresponding to the control command to each valve controller through each pulse box.

[0008] In the above embodiments, the valve control includes a control board; each pulse box includes at least one switching board; each control board and each switching board are cross-redundantly connected; the control board is used to send the control command to each switching board.

[0009] In the above embodiment, each pulse box comprises a pulse board; each switching board is in communication connection with the pulse board, and is configured to send the control command to the pulse board.

[0010] In the above embodiment, each sub-module group comprises at least one sub-module; each sub-module comprises a sub-module control board;

[0011] The pulse board is in communication connection with each sub-module control board, and is configured to receive second feedback information corresponding to the control command sent by each sub-module control board.

[0012] In the above embodiment, each sub-module group is further configured to, when any at least one pulse box fails, determine optimal unblocked connection lines between each pulse box in the any at least one pulse box and each valve control; and send the control command to the sub-module group corresponding to each pulse box in the any at least one pulse box based on the optimal unblocked connection lines.

[0013] In the above embodiment, each sub-module group is specifically configured to determine all unblocked connection lines between each pulse box in the any at least one pulse box and each valve control; calculate unblocked priority of all unblocked lines; and determine the optimal unblocked connection lines according to the unblocked priority.

[0014] In the above embodiment, each sub-module group is specifically configured to determine the number of nodes of each unblocked line in all unblocked connection lines; and determine the unblocked priority of all unblocked connection lines according to the number of nodes of each unblocked line.

[0015] In a second aspect, the embodiment of the present application provides a valve control and sub-module multi-way communication method, which comprises the following steps:

[0016] Each valve control sends a control command to each sub-module group through each pulse box.

[0017] Each sub-module group receives the control command, and sends first feedback information corresponding to the control command to each valve control through each pulse box.

[0018] In the above embodiment, each sub-module group sends the control command to the sub-module group in communication connection therewith.

[0019] Each sub-module group receives second feedback information corresponding to the control command sent by the sub-module group in communication connection therewith, and sends the second feedback information corresponding to the control command to each valve control through each pulse box.

[0020] The valve control and sub-module multi-path communication device provided by the embodiment of the present application comprises at least one valve control, at least two pulse boxes and a corresponding sub-module group of each pulse box; each sub-module group comprises at least one sub-module; each valve control is in communication connection with each pulse box; each pulse box is in communication connection with each corresponding sub-module group; each valve control is configured to send a control command to each sub-module group through each pulse box; each sub-module group is configured to receive the control command and send first feedback information corresponding to the control command to each valve control through each pulse box; each sub-module group is also configured to send the control command to the sub-module group in communication connection therewith, receive second feedback information corresponding to the control command sent by the sub-module group in communication connection therewith and send the second feedback information corresponding to the control command to each valve control through each pulse box. In the embodiment of the present application, each sub-module is in communication connection with each other, and when any one of the connection lines of the pulse box or the sub-module and the valve control fails, the other circuits of the controlled sub-modules in the device will not be affected. Each sub-module can receive the control command of the valve control and the feedback information sent by other sub-modules for the control command, thereby realizing multi-path redundant communication between the valve control and the sub-modules and improving the stability of the converter valve operation. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A structure diagram of the valve control and sub-module multi-path communication device provided by the embodiment of the present application is shown in FIG. 1.

[0022] Figure 2 A structure diagram of the valve control and sub-module multi-path communication device provided by the embodiment of the present application is shown in FIG. 1.

[0023] Figure 3 A structure diagram of the pulse box and the sub-module communication in the embodiment of the present application is shown in FIG. 2.

[0024] Figure 4 A structure diagram of the pulse board and the sub-module control board communication provided by the embodiment of the present application is shown in FIG. 3.

[0025] Figure 5 A flowchart of the valve control and sub-module multi-path communication method provided by the embodiment of the present application is shown in FIG. 4. DETAILED DESCRIPTION

[0026] The present application will be further described below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the convenience of description, only the parts related to the present application are shown in the drawings, but not all the structures.

[0027] Figure 1 A structure diagram of the valve control and sub-module multi-path communication device provided by the embodiment of the present application is shown in FIG. 1. Figure 1As shown, the valve control and sub-module multi-way communication device comprises: at least one valve control 101, at least two pulse boxes 102, and a sub-module group 103 corresponding to each pulse box 102; each sub-module group comprises at least one sub-module; each valve control 101 is in communication connection with each pulse box 102; and each pulse box 102 is in communication connection with each sub-module group 103 corresponding thereto.

[0028] The valve control 101 is configured to send a control command to the sub-module group 103 through the pulse box 102.

[0029] The sub-module group 103 is configured to receive the control command, send first feedback information corresponding to the control command to the valve control 101 through the pulse box 102, send the control command to the sub-module group in communication connection therewith, receive second feedback information corresponding to the control command sent by the sub-module group in communication connection therewith, and send the second feedback information corresponding to the control command to the valve control 101 through the pulse box 102.

[0030] The valve control 101 is the core of the system control, and calculates which sub-modules are turned on or turned off through the system state feedback quantity, and sends the command to the corresponding pulse box. A plurality of valve controls 101 can be in communication connection with a plurality of pulse boxes 102. The valve control 101 comprises a control board, and the pulse box 102 comprises at least one switching board. The control board is a core circuit board in the valve control 101, and the control board can control the valve control 101 to send a control command. The switching boards in the pulse box 102 and the control board in the valve control 101 are cross-redundant, and when a fault occurs in one of the connection lines between the switching board and the control board, the control board can also send the control command of the valve control 101 through the connection line of the other switching board. The switching boards are not physically connected, and each switching board can directly receive the control command sent by the control board. Each pulse box 102 comprises a pulse board, and all the switching boards in the pulse box are connected to the pulse board, and the pulse board can simultaneously receive the control commands of the valve control sent by the plurality of switching boards. Each pulse box 102 is connected to a sub-module group 103 corresponding thereto, the sub-module group 103 comprises a plurality of sub-modules, and each sub-module comprises a sub-module control board. The sub-module is used for the sub-module control board to control the work of the sub-module.

[0031] The first feedback information is feedback information sent by the sub-module group 103 to the pulse board after executing the control command. The second feedback information is feedback information sent by the sub-module group 103 corresponding to the other pulse box 102 after executing the control command. Specifically, the control board of each sub-module is connected with the pulse board of the corresponding pulse box 102. The pulse board can send the control command of the valve control 101 to the sub-module control board, and the sub-module control board can receive and execute the control command and send the first feedback information corresponding to the control command to the pulse board after executing the control command. At the same time, each sub-module group 103 is in communication connection with the sub-module group 103 corresponding to the other pulse box 102. The sub-modules in the sub-module group 103 can send control commands to the sub-modules in the other sub-module group 103 and receive the second feedback information sent by the sub-modules in the other sub-module group 103. In the present scheme, the sub-module group can receive the control command and send the first feedback information and / or the second feedback information to the valve control according to a predetermined control period.

[0032] The device of the embodiment of the present application comprises at least one valve control, at least two pulse boxes, and a sub-module group corresponding to each pulse box; each sub-module group comprises at least one sub-module; each valve control is in communication connection with each pulse box; and each pulse box is in communication connection with each sub-module group corresponding thereto. Specifically, Figure 2 The structure diagram of the valve control and sub-module multi-channel communication device provided by the embodiment of the present application is shown. Taking the valve control and sub-module multi-channel communication device comprising two valve controls, three pulse boxes, and three sub-module groups, each of which comprises two sub-modules, as an example. Figure 2 As shown in the figure, the control boards in the valve control 1 and the valve control 2 are in cross-redundancy connection with six switching boards in the three pulse boxes. The switching boards in the pulse boxes are not connected, but the switching board in each pulse box is connected with the pulse board in the pulse box. Figure 2 The pulse board 1 in the pulse box can receive the control command sent by the switching board 1a and the switching board 1b. Each pulse box is connected with the corresponding sub-module group, such as the sub-module 1a and the sub-module 1b in the sub-module group 1, which are in communication connection with the pulse board 1 in the pulse box 1. The sub-module 1a and the sub-module 1b can receive the control command sent by the pulse board 1 and send the first feedback information corresponding to the control command to the pulse board 1.

[0033] Specifically, the sub-module group 1 connected by the pulse box 1 includes the sub-module 1a and the sub-module 1b. The sub-module group 2 connected by the pulse box 2 includes the sub-module 2a and the sub-module 2b. The sub-module group 3 connected by the pulse box 3 includes the sub-module 3a and the sub-module 3b. The sub-module 1a, the sub-module 2a and the sub-module 3a are connected two by two respectively, and the sub-module 1b, the sub-module 2b and the sub-module 3b are connected two by two respectively. The sub-module 1 can receive the second feedback information after the execution control command is sent by the sub-module 2a and the sub-module 3a, and send the second feedback information to the pulse board. The sub-module 1a can also send the second feedback information after the execution control command to the sub-module 2a and the sub-module 3a. Similarly, each sub-module can send the second feedback information to other sub-modules connected therewith, and can also receive the second feedback information sent by other sub-modules connected therewith.

[0034] The valve control and sub-module multi-way communication device provided by the embodiment of the present application includes at least one valve control, at least two pulse boxes and a sub-module group corresponding to each pulse box. Each sub-module group includes at least one sub-module. Each valve control is in communication connection with each pulse box. Each pulse box is in communication connection with each sub-module group corresponding thereto. Each valve control is configured to send a control command to each sub-module group through each pulse box. Each sub-module group is configured to receive the control command and send first feedback information corresponding to the control command to each valve control through each pulse box. Each sub-module group is also configured to send the control command to the sub-module group connected therewith and receive second feedback information corresponding to the control command sent by the sub-module group connected therewith, and send the second feedback information corresponding to the control command to each valve control through each pulse box. In the embodiment of the present application, each sub-module is in communication connection with each other. When any one of the connection lines between the pulse box or the sub-module and the valve control fails, the other circuits of the controlled sub-modules in the device will not be affected. Each sub-module can receive the control command of the valve control and the feedback information sent by other sub-modules for the control command, thereby realizing the multi-way redundant communication between the valve control and the sub-modules and improving the stability of the converter valve operation.

[0035] Figure 3 The structure diagram for the communication between the pulse box and the sub-module in the embodiment of the present application is shown in FIG. 1. Figure 3 As shown in FIG. 1, the valve control and sub-module multi-way communication device includes a valve control 101, a pulse box 102a and a pulse box 102b, a sub-module group 103a corresponding to the pulse box 102a and a sub-module group 103b corresponding to the pulse box 102b.

[0036] The sub-module group 103a and the sub-module group 103b are used for receiving the control commands sent by the pulse box 102a and the pulse box 102b, and sending the first feedback information corresponding to the control commands to the pulse box 102a and the pulse box 102b; the sub-module group 103a is further used for sending the control commands to the sub-module group 103b, receiving the second feedback information corresponding to the control commands sent by the sub-module group 103b, and sending the second feedback information corresponding to the control commands to the pulse box 102a.

[0037] The device provided by the embodiment of the application comprises at least two pulse boxes and a sub-module group corresponding to each pulse box, each sub-module group comprises at least one sub-module, and each pulse box is in communication connection with the corresponding sub-module group. Figure 4 The structure diagram of the communication between the pulse board and the sub-module control board is shown in the device comprising three pulse boxes, three sub-module groups, and one sub-module in each sub-module group. Figure 4 As shown in the figure, the pulse box 1 comprises the pulse board 1, the pulse board 1 comprises the command sending module 1 and the feedback receiving module 1, the sub-module 1 comprises the sub-module control board 1, the sub-module control board 1 comprises the command receiving module 1 and the feedback sending module 1, and the sub-module control board 1 further comprises the communication module 1a and the communication module 1b. The command sending module 1 can send the control commands to the command receiving module 1 through the connection line p1, the command receiving module 1 can send the first feedback information to the feedback sending module 1 through the communication module 1a and the communication module 1b after receiving the control commands, and the feedback sending module 1 can send the first feedback information to the feedback receiving module 1 through the connection line p2 after receiving the first feedback information. Similarly, the pulse board 2 and the sub-module control board 2 are in communication connection in the same way, and the pulse board 3 and the sub-module control board 3 are in communication connection in the same way.

[0038] Optionally, in the scheme, each sub-module is further used for determining the optimal unblocked connection line between each pulse box and each sub-module in any at least one pulse box when the any at least one pulse box fails, and sending the control commands to the sub-module corresponding to each pulse box in the any at least one pulse box based on the optimal unblocked connection line.

[0039] The optimal unblocked connection line is a connection line with the minimum number of nodes and the shortest path length in the line and capable of sending data. Specifically, the sub-module groups are cross-redundantly connected between the sub-module groups corresponding to other pulse boxes, and the sub-modules in the sub-module groups can receive the control commands through the unblocked connection lines with other sub-modules. The second feedback information can also be sent through the unblocked connection lines with other sub-modules.

[0040] In this scheme, each submodule is specifically used to: determine all unobstructed connection lines between each pulse box and each submodule in any at least one pulse box; determine the number of nodes in each unobstructed connection line; determine the unobstructed priority of all unobstructed connection lines based on the number of nodes in each unobstructed connection line; and determine the optimal unobstructed connection line based on the unobstructed priority.

[0041] In this context, nodes in a smooth connection line are electronic components, such as submodule control boards and pulse boards. Specifically, because the number of nodes varies across different smooth connection lines, the submodule, after identifying all smooth connection lines, determines the smoothness priority of each line based on the number of nodes within each line. A smooth line with fewer nodes has a higher priority, and vice versa. When the number of nodes in a smooth line is consistent, the optimal smooth path can be determined based on the path length.

[0042] For example, such as Figure 4 As shown, communication module 1a sends control commands to communication module 2a via line p7, and communication module 2a sends control commands to communication module 1a via line p8. Communication module 1b sends control commands to communication module 3b via line p9, and communication module 3b sends control commands to communication module 1b via line p10. Communication module 2b sends control commands to communication module 3a via line p11, and communication module 3a sends control commands to communication module 2a via line p12.

[0043] Take the pulse box 1 failure as an example. When the pulse box 1 works normally, the pulse board 1 can send control commands to the sub-module control board 1 through the command sending module 1->p1->command receiving module 1->communication module 1a and communication module 1b. When the pulse box 1 fails, the sub-module 1 cannot receive the control commands sent by the pulse board 1. At this time, the sub-module 1 can receive the control commands sent by the pulse board 2 and the pulse board 3, and the available paths used by the sub-module 1 to receive the control commands sent by the pulse board 2 and the pulse board 3 are: path 1: command sending module 2->p3->command receiving module 2->communication module 2a->p8->communication module 1a; path 2: command sending module 3->p5->command receiving module 3->communication module 3a->communication module 3b->p10->communication module 1b->communication module 1a; path 3: command sending module 2->p3->command receiving module 2->communication module 2a->communication module 2b->p11->communication module 3a->communication module 3b->p10->communication module 1b->communication module 1a; path 4: command sending module 3->p5->command receiving module 3->communication module 3a->p12->communication module 2b->communication module 2a->p8->communication module 1a. After determining the four available connection lines, the number of nodes of the four available connection lines is determined as: path 1: 1 node (sub-module control board 2); path 2: 1 node (sub-module control board 3) path 3: 2 nodes (sub-module control board 2 and sub-module control board 3) path 4: 2 nodes (sub-module control board 2 and sub-module control board 3). It can be seen from Figure 4 the above that the size relationship of the path length of each available connection line is path 1< path 2< path 3< path 4. Further, according to the number of nodes and the path length of each available connection line, the priority of each available connection line is determined as path 1> path 2> path 3> path 4. Therefore, when the pulse box 1 fails, the sub-module 1 preferentially receives the control commands through path 1. Similarly, when the pulse box 1 fails, the sub-module 1 preferentially sends the second feedback information through communication module 1b->communication module 1a->p7->communication module 2a->communication module 2b.

[0044] When the pulse box fails, the available connection lines that can reach the sub-module group corresponding to the failed pulse box can be determined, and the optimal available connection line can be determined according to the number of nodes and the path length of the available connection line. The intelligentization provides multiple safeguards for the converter valve system, and avoids the situation that the entire converter valve fails due to the failure of any one circuit of the sub-module and the valve control.

[0045] The valve control and sub-module multi-path communication device provided by the embodiment of the present application comprises at least one valve control, at least two pulse boxes, and a sub-module group corresponding to each pulse box; each sub-module group comprises at least one sub-module; each valve control is in communication connection with each pulse box; each pulse box is in communication connection with each sub-module group corresponding to the pulse box; each sub-module group is configured to receive a control command, send first feedback information corresponding to the control command to each valve control through each pulse box, send the control command to a sub-module group in communication connection with the sub-module group, receive second feedback information corresponding to the control command sent by the sub-module group in communication connection with the sub-module group, and send the second feedback information corresponding to the control command to each valve control through each pulse box. Each sub-module is further configured to determine an optimal unblocked connection line between each pulse box in any at least one pulse box and each sub-module when a fault occurs in the any at least one pulse box, and send the control command to the sub-module corresponding to each pulse box in the any at least one pulse box based on the optimal unblocked connection line. The device provided by the embodiment of the present application can intelligently determine the optimal unblocked connection line according to the number of nodes and the path length of the unblocked connection line when a fault occurs in any one of the connection lines between the pulse box or the sub-module and the valve control, realize multi-path redundant communication between the valve control and the sub-module, and improve the stability of the converter valve operation.

[0046] Figure 5 The valve control and sub-module multi-path communication method provided by the embodiment of the present application is shown in a flowchart. Figure 5 As shown in the flowchart, the method comprises the following steps.

[0047] Step 501: Each valve control sends a control command to each sub-module group through each pulse box.

[0048] Specifically, each valve control is in communication connection with each pulse box, and each valve control can send a control command to each pulse box. Each pulse box is in communication connection with a sub-module group corresponding to the pulse box, and is configured to send a control command to the sub-module group.

[0049] Step 502: Each sub-module group receives a control command, and sends first feedback information corresponding to the control command to each valve control through each pulse box.

[0050] Each sub-module group can receive a control command sent by a corresponding pulse box, and send first feedback information corresponding to the control command to each valve control after receiving the control command.

[0051] Step 503: Each sub-module is in mutual communication connection, each sub-module group is further configured to send a control command to a sub-module group in communication connection with the sub-module group, receive second feedback information corresponding to the control command sent by the sub-module group in communication connection with the sub-module group, and send the second feedback information corresponding to the control command to each valve control through each pulse box.

[0052] The embodiment of the present application provides a valve control and sub-module multi-way communication method, which comprises that each valve control sends a control command to each sub-module group through each pulse box; each sub-module group receives the control command; and each valve control sends first feedback information corresponding to the control command to each sub-module group through each pulse box, each sub-module is connected in communication with each other, each sub-module group is further used for sending the control command to the sub-module group connected in communication therewith; receiving second feedback information corresponding to the control command sent by the sub-module group connected in communication therewith; and sending the second feedback information corresponding to the control command to each valve control through each pulse box. That is, in the embodiment of the present application, each sub-module is connected in communication with each other, when any one line in the connection line of the pulse box or the sub-module and the valve control is faulty, other circuits of the controlled sub-module in the device are not affected. Each sub-module can receive the control command of the valve control, and can also receive the feedback information sent by other sub-modules for the control command, so that multi-way redundant communication between the valve control and the sub-module is realized, and the stability of the converter valve operation is improved.

[0053] It should be noted that the above only describes the preferred embodiments of the present application and the applied technical principles. Those skilled in the art should understand that the present application is not limited to the specific embodiments described herein, and various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present application. Therefore, although the present application has been described in detail through the above embodiments, the present application is not limited to the above embodiments, and more other equivalent embodiments can be included without departing from the concept of the present application, and the scope of the present application is determined by the appended claims.

Claims

1. A valve control and submodule multi-channel communication device, characterized in that, The device includes: at least one valve control, at least two pulse boxes, and a submodule group corresponding to each pulse box; each submodule group includes at least one submodule; each valve control is communicatively connected to each pulse box; each pulse box is communicatively connected to its corresponding submodule group. Each valve control is used to send control commands to each submodule group through each pulse box; Each submodule group is used to receive the control command; and send the first feedback information corresponding to the control command to each valve controller through each pulse box; and is also used to send the control command to the submodule group with which it is communicatively connected; receive the second feedback information corresponding to the control command sent by the submodule group with which it is communicatively connected; and send the second feedback information corresponding to the control command to each valve controller through each pulse box. Each submodule is also used to determine the optimal unobstructed connection line between each pulse box and each submodule when any at least one pulse box fails; and to send the control command to the submodule corresponding to each pulse box in any at least one pulse box based on the optimal unobstructed connection line; wherein, the optimal unobstructed connection line is the data transmission connection line with the fewest number of nodes and the shortest path length.

2. The apparatus according to claim 1, characterized in that, The valve control includes a control board; each pulse box includes at least one switching board; each control board and each switching board are cross-redundantly connected; the control board is used to send the control commands to each switching board.

3. The apparatus according to claim 2, characterized in that, Each pulse box includes a pulse board; each switching board is communicatively connected to the pulse board and is used to send the control commands to the pulse board.

4. The apparatus according to claim 3, characterized in that, Each submodule includes a submodule control board; The pulse board is communicatively connected to each submodule control board and is used to receive the second feedback information corresponding to the control commands sent by each submodule control board.

5. The apparatus according to claim 1, characterized in that, Each submodule is specifically used to determine all unobstructed connection lines between each pulse box and each submodule in any at least one pulse box; calculate the unobstructed priority of all unobstructed lines; and determine the optimal unobstructed connection line based on the unobstructed priority.

6. The apparatus according to claim 5, characterized in that, Each submodule is specifically used to determine the number of nodes and path length of each smooth connection in all smooth connections; and to determine the smoothness priority of all smooth connections based on the number of nodes and path length of each smooth connection.

7. The apparatus according to claim 1, characterized in that, Each submodule group is specifically used to receive the control command according to a predetermined control cycle and send the first feedback information and / or the second feedback information to the valve control.

8. A method for multiplexing communication between valve control and submodules, characterized in that, The method includes: Each valve controller sends control commands to each submodule group through its respective pulse box; Each submodule group receives the control command and sends the first feedback information corresponding to the control command to each valve control through each pulse box; Each submodule is further configured to determine the optimal unobstructed connection line between each pulse box and each submodule when at least one pulse box fails; and to send the control command to the submodule corresponding to each pulse box based on the optimal unobstructed connection line; the optimal unobstructed connection line is the data transmission connection line with the fewest number of nodes and the shortest path length.

9. The method according to claim 8, characterized in that, The method further includes: Each submodule group sends the control commands to the submodule group it communicates with; It receives the second feedback information corresponding to the control command sent by the submodule group with which it is in communication; and sends the second feedback information corresponding to the control command to each valve control through each pulse box.

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