Communication device

Abstract

The invention provides a communication device. The communication device comprises a management module, a first valve base control device, a second valve base control device, a first light splitting module, a second light splitting module and a plurality of high-potential board cards. The first valve base control equipment and the second valve base control equipment are respectively connected with the management module, the first valve base control equipment is connected with the first light splitting module, and the first light splitting module is connected with part of or all the high-potential board cards. The second valve base control device is connected with the second light splitting module, and the second light splitting module is connected with part or all of the high-potential board cards. According to the communication device, redundant communication between the first valve base control device and the second valve base control device and the multiple high-potential board cards can be achieved, the number of optical fibers is greatly reduced, and then the cost and operation and maintenance difficulty of the communication device are greatly reduced. And the adjacent high-potential board cards are in cross communication, so that communication between each high-potential board card and the two valve base control devices is realized, and the reliability of the communication device is further improved on the premise of lower cost.

Description

Technical Field

[0001] The present application relates to the technical field of direct current transmission, and in particular to a communication device. Background Art

[0002] High-voltage direct current transmission has the advantages of large transmission capacity, long transmission distance, high voltage and low loss. It is an important way to transmit electric energy over long distances. The line-commutated converter (LCC) uses semi-controlled devices (such as thyristors) as the main switching devices and relies on the power grid to achieve natural commutation. LCC is usually prone to commutation failure, which will cause large fluctuations in DC power. In severe cases, it will cause the high-voltage direct current transmission system to lock, which will bring great challenges to the stable operation of the receiving power grid. The controllable-line-commutated converter (CLCC) composed of fully controlled devices and semi-controlled devices can solve the problem of commutation failure. CLCC is a converter with controllable shutdown capability, and each bridge arm includes a parallel main branch and an auxiliary branch. The main branch and the auxiliary branch are composed of multiple thyristors and insulated gate bipolar transistors (IGBTs).

[0003] Due to the electrical parameter limitations of thyristors and IGBTs, in order to support bridge arm voltages of hundreds of kilovolts or even thousands of kilovolts, the number of semiconductor devices in CLCC is huge, and each semiconductor device needs to be configured with a high-voltage board to achieve high-level energy extraction. In the communication device provided by the relevant technology, the high-voltage board and the valve base control device usually communicate point-to-point through an interface module. However, the number of long-distance optical fibers required is large, resulting in high costs and difficulty in operation and maintenance. Summary of the invention

[0004] In order to solve the problems of high cost and difficult operation and maintenance in the prior art, the present application provides a communication device, which may include a management module, a first valve base control device, a second valve base control device, a first splitter module, a second splitter module and multiple high-potential boards.

[0005] The first valve base control device and the second valve base control device are connected to the management module respectively, the first valve base control device is connected to the first light splitting module, the first light splitting module is connected to some or all high-potential boards. The second valve base control device is connected to the second light splitting module, the second light splitting module is connected to some or all high-potential boards.

[0006] Optionally, the first valve base control device is used to: send a trigger signal to some or all of the high-potential boards through the first splitter module, and also to receive first state information of some or all of the high-potential boards through the first splitter module, and determine the first working state of some or all of the high-potential boards based on the first state information.

[0007] The second valve base control device is used to: send the trigger signal to part or all of the high-potential boards through the second splitter module, and also to receive the second state information of part or all of the high-potential boards through the second splitter module, and determine the second working state of part or all of the high-potential boards according to the second state information.

[0008] The management module is used to filter the first working state and the second working state according to the respective states of the first communication link and the second communication link to obtain the working state of each high-potential board. The first communication link is used to indicate the communication link between each high-potential board and the first splitter module, and the second communication link is used to indicate the communication link between each high-potential board and the second splitter module.

[0009] In some possible implementations, the first optical splitter module includes a first optical splitter and a second optical splitter.

[0010] The input end of the first optical splitter is connected to the first valve base control device, and the output end of the first optical splitter is connected to part or all of the high potential boards. The input end of the second optical splitter is connected to part or all of the high potential boards, and the output end of the second optical splitter is connected to the first valve base control device.

[0011] In some other possible implementations, the second optical splitter module includes a third optical splitter and a fourth optical splitter.

[0012] The input end of the third optical splitter is connected to the second valve base control device, and the output end of the third optical splitter is connected to part or all of the high potential boards. The input end of the fourth optical splitter is connected to part or all of the high potential boards, and the output end of the fourth optical splitter is connected to the second valve base control device.

[0013] Furthermore, the plurality of high-potential boards include a first high-potential board and a second high-potential board.

[0014] The first optical splitter and the second optical splitter are connected to the first high potential board card respectively, the third optical splitter and the fourth optical splitter are connected to the second high potential board card respectively, and the first high potential board card is connected to the second high potential board card.

[0015] Exemplarily, the first high-potential board includes a first optical transceiver, a second optical transceiver, and a third optical transceiver. The second high-potential board includes a fourth optical transceiver, a fifth optical transceiver, and a sixth optical transceiver.

[0016] The first optical splitter and the second optical splitter are connected to the first optical transceiver respectively, and the second optical transceiver and the third optical transceiver are connected to the first optical transceiver respectively. The third optical splitter and the fourth optical splitter are connected to the fourth optical transceiver respectively, and the fifth optical transceiver and the sixth optical transceiver are connected to the fourth optical transceiver respectively; the second optical transceiver is connected to the fifth optical transceiver, and the third optical transceiver is connected to the sixth optical transceiver.

[0017] In a possible implementation manner, the first optical transceiver receives the trigger signal and transmits the trigger signal to the fifth optical transceiver through the second optical transceiver.

[0018] The fourth optical transceiver receives the trigger signal and transmits it to the second optical transceiver through the fifth optical transceiver.

[0019] In another possible implementation manner, the third optical transceiver receives the second state information transmitted by the sixth optical transceiver, and transmits the second state information to the second optical splitter through the first optical transceiver.

[0020] The sixth optical transceiver receives the first state information transmitted by the third optical transceiver, and transmits the first state information to the fourth optical splitter through the fourth optical transceiver.

[0021] Optionally, there are multi-channel communication links between the first optical splitter and the first valve base control device, between the second optical splitter and the first valve base control device, between the third optical splitter and the second valve base control device, and between the fourth optical splitter and the second valve base control device.

[0022] Exemplarily, the first working state and the second working state both include an operating state and a fault state.

[0023] The first state information and the second state information both include fault information of the high-voltage board or overvoltage protection action information.

[0024] Compared with the prior art, the beneficial effects of this application are:

[0025] The communication device provided in the present application may include a management module, a first valve base control device, a second valve base control device, a first splitter module, a second splitter module and a plurality of high-potential boards. The first valve base control device and the second valve base control device are respectively connected to the management module, the first valve base control device is connected to the first splitter module, and the first splitter module is connected to some or all of the high-potential boards. The second valve base control device is connected to the second splitter module, and the second splitter module is connected to some or all of the high-potential boards. It can be seen that the communication device provided in the present application can realize redundant communication between the first valve base control device and the second valve base control device and a plurality of high-potential boards through the first splitter module and the second splitter module, which greatly reduces the number of optical fibers, thereby greatly reducing the cost and operation and maintenance difficulty of the communication device.

[0026] The present application realizes the communication between part or all of the high-potential board cards and the first valve base control device through the first spectrometer and the second spectrometer, and also realizes the communication between part or all of the high-potential board cards and the second valve base control device through the third spectrometer and the fourth spectrometer, thereby improving the reliability of the entire communication device.

[0027] In the present application, cross communication is performed between adjacent high-potential boards, so that each high-potential board can communicate with two valve base control devices, further improving the reliability of the communication device at a lower cost.

[0028] In the present application, there are multiple communication links between the first optical splitter and the first valve base control device, between the second optical splitter and the first valve base control device, between the third optical splitter and the second valve base control device, and between the fourth optical splitter and the second valve base control device, which can improve communication efficiency.

[0029] The present application realizes a dual design through a first valve base control device, a second valve base control device and four optical splitters, and can realize online maintenance or replacement of the first valve base control device or the second valve base control device without stopping operation.

[0030] The present application realizes cross communication between trigger instructions and status information, thereby improving the communication redundancy of the communication device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 A schematic structural diagram of a communication device in an embodiment of the present application;

[0033] Figure 2 This is a schematic diagram of the connection between the first high-potential board and the second high-potential board in the embodiment of the present application;

[0034] Figure 3 A schematic diagram of the transmission process of a trigger instruction in an embodiment of the present application;

[0035] Figure 4 This is a schematic diagram of the transmission process of the first state information and the second state information in an embodiment of the present application;

[0036] Figure 5 This is a schematic diagram of the working principle of the communication device when the first optical transceiver fails in an embodiment of the present application. DETAILED DESCRIPTION

[0037] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0038] The terms "first", "second", etc. in the specification embodiments, claims, and drawings of the present application are only used for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, including a series of steps or units. The method, system, product, or device is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.

[0039] It should be understood that in the present application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0040] The present application provides a communication device, such as Figure 1 As shown. The communication device 100 may include a management module 10, a first valve base control device 11, a second valve base control device 12, a first light splitting module 13, a second light splitting module 14 and N high potential boards. N≥2, N may be an odd number or an even number. The N high potential boards include a high potential board 151, a high potential board 152, a high potential board 153, a high potential board 15(N-1) and a high potential board 15N.

[0041] The first valve base control device 11 and the second valve base control device 12 are respectively connected to the management module 14. The first valve base control device 11 is connected to the first light splitting module 13, and the first light splitting module 13 is connected to some or all high-potential boards. The second valve base control device 12 is connected to the second light splitting module 14, and the second light splitting module 14 is connected to some or all high-potential boards.

[0042] Optionally, the first valve base control device 11 is used to: send the trigger signal to some or all of the high-potential boards through the first light splitting module 13, and also to receive the first state information of some or all of the high-potential boards through the first light splitting module 13, and determine the first working state of some or all of the high-potential boards according to the first state information. For example, the first valve base control device 11 sends the trigger signal to the high-potential board 151 through the first light splitting module 13, and sends the trigger signal to the high-potential board 152 through the high-potential board 151. In other words, the first valve base control device 11 directly sends the trigger signal to the high-potential board 151, the high-potential board 153, ..., the high-potential board 15 (N-1) through the first light splitting module 13. At the same time, the first valve base control device 11 indirectly sends the trigger signal to the high potential board 152, high potential board 154, ..., high potential board 15N through the first splitter module 13 and the high potential board 151, high potential board 153, ..., high potential board 15 (N-1).

[0043] The second valve base control device 12 is used to send the trigger signal to some or all of the high-potential boards through the second light splitting module 14, and is also used to receive the second state information of some or all of the high-potential boards through the second light splitting module 14, and determine the second working state of some or all of the high-potential boards according to the second state information. For example, the second valve base control device 12 sends the trigger signal to the high-potential board 152 through the second light splitting module 14, and sends the trigger signal to the high-potential board 151 through the high-potential board 152. In other words, the second valve base control device 12 directly sends the trigger signal to the high-potential board 152, the high-potential board 154, ..., the high-potential board 15N through the second light splitting module 3. At the same time, the second valve base control device 12 indirectly sends the trigger signal to the high potential board 151, high potential board 153, ..., high potential board 15 (N-1) through the second splitter module 14 and the high potential board 152, high potential board 154, ..., high potential board 15N.

[0044] The management module 14 is used to filter the first working state and the second working state according to the respective states of the first communication link and the second communication link to obtain the working state of each high-potential board. The first communication link is used to indicate the communication link between each high-potential board and the first optical splitter module 13, and the second communication link is used to indicate the communication link between each high-potential board and the second optical splitter module 14.

[0045] Exemplarily, the first working state and the second working state both include the operating state and the fault state of the high-potential board. The first state information and the second state information both include the fault information or the overvoltage protection action information of the high-potential board.

[0046] Optionally, each high-potential board may include a logic processing chip to transparently transmit the received trigger signal and the status information that needs to be reported to the adjacent high-potential board, thereby shortening the link delay.

[0047] In some embodiments, reference Figure 1 The first optical splitter module 13 includes a first optical splitter 131 and a second optical splitter 132 .

[0048] The input end of the first optical splitter 131 is connected to the first valve base control device 11, and the output end of the first optical splitter 131 is connected to part or all of the high-potential boards. The input end of the second optical splitter 132 is connected to part or all of the high-potential boards, and the output end of the second optical splitter 132 is connected to the first valve base control device 11.

[0049] For example, the output end of the first optical splitter 131 can be connected to the high potential board 151, the high potential board 153, ..., the high potential board 15 (N-1). The input end of the second optical splitter 132 can be connected to the high potential board 151, the high potential board 153, ..., the high potential board 15 (N-1).

[0050] It can be seen that in the embodiment of the present application, communication decoupling is achieved between the first optical splitter receiving the trigger signal and the second optical splitter responsible for transmitting the second state information, and the state information of each high-potential board is transmitted in time-division multiplexing.

[0051] In some other embodiments, continue to refer to Figure 1 The second optical splitter module 14 includes a third optical splitter 141 and a fourth optical splitter 142 .

[0052] The input end of the third optical splitter 141 is connected to the second valve base control device 12, and the output end of the third optical splitter 141 is connected to part or all of the high-potential boards. The input end of the fourth optical splitter 142 is connected to part or all of the high-potential boards, and the output end of the fourth optical splitter 142 is connected to the second valve base control device 12.

[0053] For example, the output end of the third optical splitter 141 can be connected to the high potential board 152, the high potential board 154, ..., the high potential board 15N. The input end of the fourth optical splitter 142 can be connected to the high potential board 152, the high potential board 154, ..., the high potential board 15N.

[0054] It can be seen that in the embodiment of the present application, communication decoupling is achieved between the third optical splitter receiving the trigger signal and the fourth optical splitter responsible for transmitting the first state information, and the state information of each high-potential board is transmitted in time-division multiplexing.

[0055] Optional, reference Figure 1There are multi-channel communication links between the first optical splitter 131 and the first valve base control device 11, between the second optical splitter 132 and the first valve base control device 11, between the third optical splitter 141 and the second valve base control device 12, and between the fourth optical splitter 142 and the second valve base control device 12.

[0056] For further reference, Figure 2 and Figure 3 The multiple high-potential boards include a high-potential board 151 (ie, a first high-potential board) and a high-potential board 153 (ie, a second high-potential board).

[0057] The first optical splitter 131 and the second optical splitter 132 are respectively connected to the high potential board 151 , the third optical splitter 141 and the fourth optical splitter 142 are respectively connected to the high potential board 152 , and the high potential board 151 is connected to the high potential board 153 .

[0058] Exemplary, reference Figure 2 The high potential board 151 includes a first optical transceiver 1511 , a second optical transceiver 1512 , and a third optical transceiver 1513 . The high potential board 153 includes a fourth optical transceiver 1534 , a fifth optical transceiver 1535 , and a sixth optical transceiver 1536 .

[0059] The first optical splitter 131 and the second optical splitter 132 are respectively connected to the first optical transceiver 1511, and the second optical transceiver 1512 and the third optical transceiver 1513 are respectively connected to the first optical transceiver 1511. The third optical splitter 141 and the fourth optical splitter 142 are respectively connected to the fourth optical transceiver 1534, and the fifth optical transceiver 1535 and the sixth optical transceiver 1536 are respectively connected to the fourth optical transceiver 1534. The second optical transceiver 1512 is connected to the fifth optical transceiver 1535, and the third optical transceiver 1513 is connected to the sixth optical transceiver 1536.

[0060] In one possible implementation, Figure 3 As shown, the first optical transceiver 1511 receives the trigger signal from the first optical splitter 131 and transmits it to the fifth optical transceiver 1535 through the second optical transceiver 1512. It can be seen that the trigger signal from the first optical splitter 131 can be transmitted to the high potential board 153 through the high potential board 151.

[0061] The fourth optical transceiver 1534 receives the trigger signal from the third optical splitter 141 and transmits it to the second optical transceiver 1512 through the fifth optical transceiver 1535. It can be seen that the trigger signal from the second optical splitter 132 can be transmitted to the high potential board 151 through the high potential board 152.

[0062] In another possible implementation, Figure 4As shown, the third optical transceiver 1513 receives the second state information transmitted by the sixth optical transceiver 1536, and transmits it to the second optical splitter 132 through the first optical transceiver 1511. It can be seen that the second state information transmitted by the high potential board 153 can be transmitted to the second optical splitter 132 through the high potential board 151.

[0063] The sixth optical transceiver 1536 receives the first state information transmitted by the third optical transceiver 1513 and transmits it to the fourth optical splitter 142 via the fourth optical transceiver 1534. It can be seen that the first state information transmitted by the high potential board 151 can be transmitted to the fourth optical splitter 142 via the high potential board 153.

[0064] like Figure 5 As shown, in the case of a failure of the high-potential board 151, the first valve base control device 11 cannot obtain the first state information of the high-potential board 151 and the high-potential board 152 through the second optical splitter 132. Therefore, the second valve base control device 12 can obtain the first state information of the high-potential board 151 and the high-potential board 152 through the fourth optical splitter 142. It can be seen that the failure of any high-potential board will not lead to the acquisition of state information of other high-potential boards. It can be seen that the communication device 100 provided in the embodiment of the present application has high reliability.

[0065] If the first valve base control device 11 needs to be repaired, the first valve base control device 11 stops outputting trigger instructions, and the high-potential board 151 and the like can receive the trigger instruction from the second valve base control device 12 through the high-potential board 152 (i.e., the adjacent high-potential board), thereby performing maintenance, power-off replacement, and other operations on the first valve base control device 11. After the operation is completed, the first valve base control device 11 is powered on and exits the maintenance mode, and a trigger instruction can be sent to the high-potential board 151.

[0066] The above are merely embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are included in the scope of the claims of the present invention to be approved.

Claims

1. A communication device, characterized in that: It includes a management module, a first valve base control device, a second valve base control device, a first light splitting module, a second light splitting module and a plurality of high potential boards; The first valve base control device and the second valve base control device are connected to the management module respectively. The first valve base control device is connected to the first splitter module, and the first splitter module is connected to some or all of the high-potential boards; the second valve base control device is connected to the second splitter module, and the second splitter module is connected to some or all of the high-potential boards.

2. The communication device according to claim 1, characterized in that The first valve base control device is used to: send a trigger signal to some or all of the high-potential boards through the first light splitting module, and is also used to receive first state information of some or all of the high-potential boards through the first light splitting module, and determine a first working state of some or all of the high-potential boards according to the first state information; The second valve base control device is used to: send the trigger signal to some or all of the high-potential boards through the second light splitting module, and receive second state information of some or all of the high-potential boards through the second light splitting module, and determine the second working state of some or all of the high-potential boards according to the second state information; The management module is used to: filter the first working state and the second working state according to the respective states of the first communication link and the second communication link to obtain the working state of each high-potential board card; the first communication link is used to indicate the communication link between each high-potential board card and the first splitter module, and the second communication link is used to indicate the communication link between each high-potential board card and the second splitter module.

3. The communication device according to claim 1, characterized in that The first optical splitter module includes a first optical splitter and a second optical splitter; The input end of the first optical splitter is connected to the first valve base control device, and the output end of the first optical splitter is connected to part or all of the high-potential board cards; The input end of the second optical splitter is connected to part or all of the high-potential board cards, and the output end of the second optical splitter is connected to the first valve base control device.

4. The communication device according to claim 3, characterized in that: The second optical splitter module includes a third optical splitter and a fourth optical splitter; The input end of the third optical splitter is connected to the second valve base control device, and the output end of the third optical splitter is connected to part or all of the high-potential board cards; The input end of the fourth optical splitter is connected to part or all of the high-potential board cards, and the output end of the fourth optical splitter is connected to the second valve base control device.

5. The communication device according to claim 4, characterized in that: The plurality of high-potential boards include a first high-potential board and a second high-potential board; The first optical splitter and the second optical splitter are respectively connected to the first high potential board card, the third optical splitter and the fourth optical splitter are respectively connected to the second high potential board card, and the first high potential board card is connected to the second high potential board card.

6. The communication device according to claim 5, characterized in that: The first high-potential board includes a first optical transceiver, a second optical transceiver and a third optical transceiver; the second high-potential board includes a fourth optical transceiver, a fifth optical transceiver and a sixth optical transceiver; The first optical splitter and the second optical splitter are respectively connected to the first optical transceiver, and the second optical transceiver and the third optical transceiver are respectively connected to the first optical transceiver; The third optical splitter and the fourth optical splitter are respectively connected to the fourth optical transceiver, the fifth optical transceiver and the sixth optical transceiver are respectively connected to the fourth optical transceiver; the second optical transceiver is connected to the fifth optical transceiver, and the third optical transceiver is connected to the sixth optical transceiver.

7. The communication device according to claim 6, characterized in that: The first optical transceiver receives the trigger signal and transmits it to the fifth optical transceiver through the second optical transceiver; The fourth optical transceiver receives the trigger signal and transmits the trigger signal to the second optical transceiver through the fifth optical transceiver.

8. The communication device according to claim 6, characterized in that: The third optical transceiver receives the second state information transmitted by the sixth optical transceiver, and transmits the second state information to the second optical splitter through the first optical transceiver; The sixth optical transceiver receives the first state information transmitted by the third optical transceiver, and transmits the first state information to the fourth optical splitter through the fourth optical transceiver.

9. The communication device according to any one of claims 4 to 8, characterized in that: There are multi-way communication links between the first optical splitter and the first valve base control device, between the second optical splitter and the first valve base control device, between the third optical splitter and the second valve base control device, and between the fourth optical splitter and the second valve base control device.

10. The communication device according to claim 2, characterized in that: The first working state and the second working state both include a running state and a fault state; The first status information and the second status information both include fault information or overvoltage protection action information of the high-potential board.

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