Complete redundancy triggering device and method for extra-ultrahigh voltage direct current transmission converter valve

Abstract

The invention particularly relates to a complete redundancy triggering device and method for an extra-ultrahigh voltage direct current transmission converter valve. The complete redundancy triggering device comprises a valve control device and a converter valve, the valve control device comprises a first triggering and monitoring case and a second triggering and monitoring case. The first triggering and monitoring case comprises a first main control board and a first triggering optical link; the second triggering and monitoring case comprises a second main control board and a second triggering optical link; the converter valve comprises a first optical splitter and a plurality of thyristor control units. The first main control board is connected with the first optical splitter through a first trigger optical link, the second main control board is connected with the first optical splitter through a second trigger optical link, and the first optical splitter is connected with the plurality of thyristor control units. According to the invention, when the optical link fault is triggered and detected back, fault processing of all board cards and channels can be carried out without power cut and converter valve locking, complete redundancy configuration of a valve control system is realized, and the operation reliability and stability of a direct current system are greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of DC power transmission, and particularly relates to a fully redundant trigger device and method for an ultra-high voltage DC power transmission converter valve. Background Art

[0002] The DC power transmission system is an important means to achieve high-voltage, large-capacity, long-distance power transmission and grid interconnection across regions, and is an important foundation for ensuring the safe and stable operation of the power grid and the reliable supply of electric power. The converter valve control system is not only the core component of the DC system but also the key link in the control system. The converter valve control system, abbreviated as the valve control system, plays a role as a link that directly sends trigger pulses to the converter valve, real-time detects the state information of the converter valve and reports it to the DC control system. Once a failure occurs, it will cause the forced outage of the DC system.

[0003] Currently, in the existing technical route of the valve control system, when a circuit board for triggering and feedback detection fails in the valve control system connected to the high-potential board of the converter valve, the converter valve needs to be blocked before the board can be replaced. Therefore, there has been no breakthrough improvement in the overall topological structure, and there is still a risk of DC blocking caused by a single component failure in extreme cases, which restricts the reliability of the DC system operation. In some enterprises, there is a certain proportion of DC outages caused by valve control single-board failures over the years. Summary of the Invention

[0004] To overcome the problems existing in the above related technologies, the present invention provides a fully redundant trigger device and method for an ultra-high voltage DC power transmission converter valve.

[0005] According to the first aspect of the embodiment of the present invention, a fully redundant trigger device for an ultra-high voltage DC power transmission converter valve is provided, including: a valve control device and a converter valve; the valve control device includes: a first trigger and monitoring chassis and a second trigger and monitoring chassis; the first trigger and monitoring chassis includes: a first main control board and a first trigger optical link; the second trigger and monitoring chassis includes: a second main control board and a second trigger optical link; the converter valve includes: a first optical splitter and a plurality of thyristor control units;

[0006] The first main control board is connected to the first optical splitter through the first trigger optical link, the second main control board is connected to the first optical splitter through the second trigger optical link, and the first optical splitter is connected to the plurality of thyristor control units;

[0007] The first main control board is configured to generate a trigger signal when the first trigger and monitoring chassis is the primary system, and send the trigger signal to the first optical splitter through the first trigger optical link;

[0008] The second main control board is configured to be in a hot standby state when the second trigger and monitoring chassis is the standby system;

[0009] The first optical splitter is configured to perform optical splitting and multiplexing on the trigger signal, and send the trigger signal after optical splitting and multiplexing to the multiple thyristor control units.

[0010] Preferably, when the first trigger and monitoring chassis is a standby system, the first main control board is also in a hot standby state;

[0011] The second main control board is further configured to generate a trigger signal when the second trigger and monitoring chassis is a primary system, and send the trigger signal to the first optical splitter through the second trigger optical link.

[0012] Preferably, the first trigger optical link includes: a first transmitting board and a second transmitting board; the second trigger optical link includes: a third transmitting board and a fourth transmitting board;

[0013] The first main control board is connected to the first optical splitter through the first transmitting board and the second transmitting board;

[0014] The second main control board is connected to the first optical splitter through the third transmitting board and the fourth transmitting board.

[0015] Preferably, both the first transmitting board and the second transmitting board are configured to send the trigger signal generated by the first main control board to the first optical splitter;

[0016] Both the third transmitting board and the fourth transmitting board are configured to send the trigger signal generated by the second main control board to the first optical splitter.

[0017] Preferably, both the first transmitting board and the second transmitting board include: a plurality of high-power laser emitters.

[0018] Preferably, the valve control device further includes: a second optical splitter; the first trigger and monitoring chassis further includes: a plurality of first receiving boards; the second trigger and monitoring chassis further includes: a plurality of second receiving boards; the plurality of first receiving boards and the plurality of second receiving boards form a feedback optical link;

[0019] The second optical splitter is connected to the multiple thyristor control units;

[0020] The second optical splitter, the first receiving board and the first main control board are connected in sequence;

[0021] The second optical splitter, the second receiving board and the second main control board are connected in sequence.

[0022] Preferably, the first optical splitter is further configured to:

[0023] Send the trigger link inspection signals to the first receiving board and the second receiving board respectively.

[0024] Preferably, the second optical splitter is used to distribute and multiplex the status signals reported by multiple thyristor control units, and send the distributed and multiplexed status signals to the first receiving board and the second receiving board;

[0025] The first receiving board is used to send the distributed and multiplexed status signals to the first main control board; and send the trigger link inspection signals to the first main control board;

[0026] The second receiving board is used to send the distributed and multiplexed status signals to the second main control board; and send the trigger link inspection signals to the second main control board.

[0027] Preferably, the first optical splitter is a 5-to-16 optical splitter based on a small-core 62.5 / 125um optical fiber;

[0028] The second optical splitter is a 1-to-2 optical splitter.

[0029] Preferably, the first optical splitter includes: 5 input interfaces and 16 output interfaces; the 5 input interfaces include: 4 main input interfaces and 1 spare input interface; the 16 output interfaces include: 13 main output interfaces, 1 spare output interface, a first inspection interface and a second inspection interface

[0030] Each of the first transmitting board, the second transmitting board, the third transmitting board and the fourth transmitting board is connected to one of the main input interfaces;

[0031] Each of the main output interfaces is connected to one of the thyristor control units, the first inspection interface is connected to the first receiving board, and the second inspection interface is connected to the second receiving board.

[0032] According to the second aspect of the embodiments of the present invention, a fully redundant triggering method for a UHVDC transmission converter valve is provided. The method is applied to the fully redundant triggering device of the UHVDC transmission converter valve as described above, and is characterized by including:

[0033] When the first trigger and monitoring chassis is the main system, generate a trigger signal by the first main control board, and send the trigger signal to the first optical splitter through the first trigger optical link;

[0034] When the second trigger and monitoring chassis is the standby system, keep the second main control board in a hot standby state;

[0035] The trigger signal is split and multiplexed by a first optical splitter, and the split and multiplexed trigger signal is sent to a plurality of thyristor control units.

[0036] Preferably, the method further includes:

[0037] When the first trigger and monitoring chassis are in the standby system, the first main control board is in the hot standby state;

[0038] When the second trigger and monitoring chassis are in the main system, the second main control board generates a trigger signal and sends the trigger signal to the first optical splitter through the second trigger optical link.

[0039] Preferably, sending the trigger signal to the first optical splitter through the first trigger optical link includes:

[0040] Using a first transmitting board and a second transmitting board to send the trigger signal generated by the first main control board to the first optical splitter.

[0041] Preferably, sending the trigger signal to the first optical splitter through the second trigger optical link includes:

[0042] Using a third transmitting board and a fourth transmitting board to send the trigger signal generated by the second main control board to the first optical splitter.

[0043] Preferably, the method further includes:

[0044] Using the first optical splitter to send the trigger link inspection signal to a first receiving board and a second receiving board respectively, so that the first receiving board sends the trigger link inspection signal to the first main control board, and the second receiving board sends the trigger link inspection signal to the second main control board.

[0045] Preferably, the method further includes:

[0046] Using a second optical splitter to distribute and multiplex the status signals reported by a plurality of thyristor control units, and sending the distributed and multiplexed status signals to the first receiving board and the second receiving board, so that the first receiving board sends the distributed and multiplexed status signals to the first main control board, and the second receiving board sends the distributed and multiplexed status signals to the second main control board.

[0047] According to the third aspect of the embodiments of the present invention, an electronic device is provided, including: at least one processor and a memory; the memory and the processor are connected by a bus;

[0048] The memory is used to store one or more programs;

[0049] When the one or more programs are executed by the at least one processor, the complete redundant triggering method for the UHVDC converter valve is implemented.

[0050] According to a fourth aspect of an embodiment of the present invention, there is provided a readable storage medium having a stored execution program, and when the execution program is executed, the complete redundant triggering method for the UHVDC converter valve is implemented.

[0051] The technical solution provided by the present invention has the following beneficial effects:

[0052] A complete redundant triggering device and method for a UHVDC converter valve provided by the present invention includes: a valve control device and a converter valve; the valve control device includes: a first trigger and monitoring chassis, a second trigger and monitoring chassis, a first trigger optical link, and a second trigger optical link; the first trigger and monitoring chassis includes: a first main control board; the second trigger and monitoring chassis includes: a second main control board; the converter valve includes: a first optical splitter and a plurality of thyristor control units; the first main control board is connected to the first optical splitter through the first trigger optical link, the second main control board is connected to the first optical splitter through the second trigger optical link, and the first optical splitter is connected to the plurality of thyristor control units; the first main control board is configured to generate a trigger signal when the first trigger and monitoring chassis is the main system, and send the trigger signal to the first optical splitter through the first trigger optical link; the second main control board is configured to be in a hot standby state when the second trigger and monitoring chassis is the standby system; the first optical splitter is configured to perform optical splitting and multiplexing on the trigger signal, and send the optically split and multiplexed trigger signal to the plurality of thyristor control units. The present invention realizes that when a fault occurs in the trigger and feedback optical link, the fault handling of the transmitting board, trigger optical fiber, receiving board, and feedback optical fiber can be carried out without power outage and blocking the converter valve, realizes the complete redundant configuration of the valve control system, and all boards and channels can be replaced online, greatly improving the redundancy of the trigger link and the reliability and safety of the UHVDC transmission system. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings without creative efforts based on these drawings.

[0054] Figure 1 is a structural block diagram of a complete redundant triggering device for a UHVDC converter valve provided by an embodiment of the present invention;

[0055] Figure 2 is a schematic diagram of the 5-to-16 optical splitter interface design provided by an embodiment of the present invention;

[0056] Figure 3 It is a structural block diagram of a fully redundant trigger device for a UHVDC transmission converter valve provided by an embodiment of the present invention;

[0057] Figure 4 It is a schematic diagram of the VBE trigger channel of the valve control system provided by an embodiment of the present invention;

[0058] Figure 5 It is a flowchart of a fully redundant trigger method for a UHVDC transmission converter valve provided by an embodiment of the present invention;

[0059] Figure 6 It is a structural block diagram of an electronic device provided by an embodiment of the present invention;

[0060] Figure 3 In it, MSC1 - the first optical splitter, MSC2 - the second optical splitter, A - the first trigger and monitoring chassis, B - the second trigger and monitoring chassis, C1 - the first main control board, C2 - the second main control board, A1 - the first transmitting board, A2 - the second transmitting board, B1 - the third transmitting board, B2 - the fourth transmitting board, A3 - the first receiving board, B3 - the second receiving board, TCU - the thyristor control unit. Detailed implementation manners

[0061] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the following embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0062] Embodiment 1

[0063] The present invention provides a fully redundant trigger device for a UHVDC transmission converter valve, as Figure 1 shown, including: a valve control device and a converter valve; the valve control device includes: a first trigger and monitoring chassis and a second trigger and monitoring chassis; the first trigger and monitoring chassis includes: a first main control board and a first trigger optical link; the second trigger and monitoring chassis includes: a second main control board and a second trigger optical link; the converter valve includes: a first optical splitter and a plurality of thyristor control units;

[0064] The first main control board is connected to the first optical splitter through the first trigger optical link, the second main control board is connected to the first optical splitter through the second trigger optical link, and the first optical splitter is connected to the plurality of thyristor control units;

[0065] The first main control board is used to generate a trigger signal when the first trigger and monitoring chassis is the primary system, and send the trigger signal to the first optical splitter through the first trigger optical link.

[0066] The second main control board is used to be in the hot standby state when the second trigger and monitoring chassis is the standby system.

[0067] The first optical splitter is used to multiplex the trigger signal by splitting, and send the multiplexed trigger signal by splitting to multiple thyristor control units.

[0068] Further, the first main control board is also used to be in the hot standby state when the first trigger and monitoring chassis is the standby system.

[0069] The second main control board is also used to generate a trigger signal when the second trigger and monitoring chassis is the primary system, and send the trigger signal to the first optical splitter through the second trigger optical link.

[0070] It can be understood that both of the two trigger and monitoring chassis can be used as the primary system and the standby system, but they cannot be the primary system and the standby system at the same time, that is, the "one master and one slave" method is adopted, and when the primary system cannot be used, the standby system will be converted from the hot standby state to the working state.

[0071] The valve control device VBE of the present invention adopts a dual redundant design and has high reliability. The master and slave systems of VBE are determined by the master / slave selection signal of the pole control system. A "one-to-one" connection is adopted between VBE and the pole control system, and the "one master and one slave" method is adopted during normal operation, that is, the first trigger and monitoring chassis A is the master, and the second trigger and monitoring chassis B is the slave. The VBE system in the primary state is actually responsible for the control of the converter valve and outputs a blocking instruction. The VBE system in the standby state must be in the hot standby state unless it is unavailable, that is, except for not sending trigger pulses to the valve tower, other functions such as control, protection, alarm, blocking, monitoring, and events are the same as those of the primary system.

[0072] In some embodiments, the valve control device further includes: a communication and control chassis respectively connected to the first trigger and monitoring chassis and the second trigger and monitoring chassis;

[0073] The communication and control chassis is used to perform external communication between the first trigger and monitoring chassis and the second trigger and monitoring chassis.

[0074] It can be understood that all circuit boards of the valve control device VBE of the present invention adopt a fully dual redundant design. The trigger and monitoring chassis and the communication and control chassis in the master and slave systems are completely independent in hardware and are respectively placed in different chassis. Fault handling of one of the systems does not affect the normal operation of the other system.

[0075] Further, the first trigger optical link includes: a first transmitting board and a second transmitting board; the second trigger optical link includes: a third transmitting board and a fourth transmitting board;

[0076] The first main control board is connected to the first optical splitter through the first transmitting board and the second transmitting board;

[0077] The second main control board is connected to the first optical splitter through the third transmitting board and the fourth transmitting board.

[0078] It can be understood that the fully redundant trigger architecture proposed by the present invention is applicable to the converter valve of UHV DC transmission. In the present invention, the transmitting board realizes redundancy within the same system. Any set of systems in the redundant system is configured with dual-redundant optical transmitting boards. When a single transmitting board fails, it is still dual-system redundant. The VBE redundant system is configured with 4 redundant transmitting boards. Among the 4 transmitting boards of the dual systems, as long as 1 transmitting board works normally, it can provide trigger pulses with sufficient power to reliably trigger the thyristor. The redundancy of the trigger circuit is greatly improved.

[0079] Further, both the first transmitting board and the second transmitting board are used to send the trigger signal generated by the first main control board to the first optical splitter;

[0080] Both the third transmitting board and the fourth transmitting board are used to send the trigger signal generated by the second main control board to the first optical splitter. Further, both the first transmitting board and the second transmitting board include: a plurality of high-power laser emitters.

[0081] Further, the valve control device further includes: a second optical splitter; the first trigger and monitoring chassis further includes: a plurality of first receiving boards; the second trigger and monitoring chassis further includes: a plurality of second receiving boards; the plurality of first receiving boards and the plurality of second receiving boards form a feedback optical link;

[0082] The second optical splitter is connected to a plurality of thyristor control units;

[0083] The second optical splitter, the first receiving board and the first main control board are connected in sequence;

[0084] The second optical splitter, the second receiving board and the second main control board are connected in sequence.

[0085] It should be noted that the number of the first receiving boards and the second receiving boards is determined by the number of thyristor control units (i.e., the number of stages of the TCU). The present invention does not limit the "number of the first receiving boards and the second receiving boards", and it can be set by those skilled in the art according to engineering needs, experimental data or expert experience, etc.

[0086] In some embodiments, a plurality of receiving optical heads are configured on the receiving board, and each receiving optical head receives the return signal of 1 stage of thyristor stage.

[0087] Further, the first optical splitter is also configured to: separately send the trigger link inspection signal to the first receiving board and the second receiving board.

[0088] Further, the second optical splitter is configured to distribute and multiplex the status signals reported by multiple thyristor control units, and send the distributed and multiplexed status signals to the first receiving board and the second receiving board;

[0089] The first receiving board is configured to send the distributed and multiplexed status signals to the first main control board; and send the trigger link inspection signal to the first main control board;

[0090] The second receiving board is configured to send the distributed and multiplexed status signals to the second main control board; and send the trigger link inspection signal to the second main control board.

[0091] To enable both the optical emission board and the optical receiving board to be replaced online, the present invention proposes the above new optical path topology. An optical cable is used to connect the valve control device VBE and the converter valve. The valve control device VBE outputs a converter valve trigger signal to the high-potential board of the converter valve to turn on the thyristor and simultaneously detects the return signal of the high-potential board of the converter valve to monitor the thyristor status. Between the valve control device VBE and the high-potential board of the converter valve, both the trigger and the feedback inspection are connected by an optical splitter MSC. Among them, the trigger optical link uses a 5-to-16 optical splitter based on a small-core 62.5 / 125um optical fiber, and the feedback inspection optical link uses a 1-to-2 optical splitter. Further, the first optical splitter MSC1 is: a 5-to-16 optical splitter based on a small-core 62.5 / 125um optical fiber;

[0092] The second optical splitter MSC2 is: a 1-to-2 optical splitter.

[0093] Further, as Figure 2 shown, the first optical splitter includes: 5 input interfaces and 16 output interfaces; the 5 input interfaces include: 4 main input interfaces and 1 spare input interface; the 16 output interfaces include: 13 main output interfaces, 1 spare output interface, a first inspection interface, and a second inspection interface

[0094] The first emission board, the second emission board, the third emission board, and the fourth emission board are each connected to a main input interface;

[0095] Each main output interface is connected to a thyristor control unit. The first inspection interface is connected to the first receiving board, and the second inspection interface is connected to the second receiving board.

[0096] The redundant topology for triggering the optical channel inspection proposed by the present invention is different from the previous design. In the previous design, after the triggering channel inspection signal is output from a 5-to-16 optical splitter in a single path, it is split by a 1-to-2 optical splitter and then enters the redundant system receiving board. In the present invention, after the triggering channel inspection signal is output from the 5-to-16 optical splitter, it directly enters the receiving boards of the redundant system respectively. The inspection signal link is independent and no longer passes through a single component, so the reliability is high.

[0097] To further illustrate the fully redundant trigger device for the above-mentioned ultra-high voltage direct current transmission converter valve, the present invention provides a specific example as Figure 3 shown, the fully redundant trigger device for the ultra-high voltage direct current transmission converter valve includes: a valve control device, a converter valve, a second optical splitter MSC2, and a feedback optical link;

[0098] The valve control device includes: a first trigger and monitoring chassis A, a second trigger and monitoring chassis B, a first trigger optical link, and a second trigger optical link; the first trigger and monitoring chassis includes: a first main control board C1; the second trigger and monitoring chassis includes: a second main control board C2; the first trigger optical link includes: a first transmitting board A1 and a second transmitting board A2; the second trigger optical link includes: a third transmitting board B1 and a fourth transmitting board B2;

[0099] The converter valve includes: a first optical splitter MSC1 and 13 thyristor levels;

[0100] The feedback optical link includes: a first receiving board A3 and a second receiving board B3;

[0101] The first main control board C1 is connected to the first optical splitter MSC1 through the first transmitting board A1 and the second transmitting board A2, the second main control board C2 is connected to the first optical splitter MSC1 through the third transmitting board B1 and the fourth transmitting board B2, and the first optical splitter MSC1 is connected to 13 thyristor levels;

[0102] The second optical splitter MSC2 is connected to a plurality of thyristor control units; the second optical splitter MSC2, the first receiving board A3, and the first main control board C1 are connected in sequence; the second optical splitter MSC2, the second receiving board B3, and the second main control board C2 are connected in sequence.

[0103] Among them, a plurality of high-power laser emitters are configured on each transmitting board, and the trigger signal emitted by each laser emitter can trigger and control the thyristor levels of one valve section after being split by a 5-to-16 optical splitter based on a small-core diameter 62.5 / 125um optical fiber. A plurality of receiving optical heads are configured on each receiving board, and each receiving optical head receives the return signal of 1 thyristor level.

[0104] The first trigger and monitoring chassis A is the main system, and the second trigger and monitoring chassis B is the slave system. Each of the master and slave systems has 2 emission boards that respectively send trigger signals. A total of 4 trigger signals are connected to the first optical splitter MSC1 (the first optical splitter MSC1 is installed on the valve tower). During normal operation, the main system executes the trigger instruction, which is sent to the high-potential board card after passing through MSC1. The trigger instructions of the master and slave systems come from different hardware boards respectively. Therefore, the emission channels are redundantly designed, and any optical emission board card failure can be replaced online.

[0105] As Figure 2 and Figure 4 shown, the 5-in-16 optical splitter has 5 input interfaces and 16 output interfaces. Among them, 4 input interfaces are connected to a total of 4 trigger signals from the A / B system. The fifth input port is the access end for the spare trigger optical fiber. When one of the four common trigger optical fibers fails, rapid replacement can be achieved.

[0106] The 2 emission boards within a single set of system are redundantly configured. After one of them fails, the system where the failed board card is located can still operate normally and maintain normal triggering. That is, after one emission board fails, the valve control system is still in a state where both systems are available. Among the 4 emission boards of the redundant system, as long as one emission board works normally, it can provide trigger pulses with sufficient power to reliably trigger the thyristor. That is, the trigger link of the valve control system adopts a dual redundant configuration, greatly improving the redundancy of the trigger optical link.

[0107] After the 4 trigger signals are multiplexed by the 5-in-16 optical splitter, 13 trigger signals are output from 13 output interfaces of the 5-in-16 optical splitter and are connected one-to-one to the corresponding thyristor stage trigger unit (i.e., the high-potential board card). This saves more than 60% of the trigger optical fibers compared to the original. The failure of one of the trigger signal inputs of the 5-in-16 optical splitter does not affect the trigger control of the corresponding valve section. As long as at least one of the 4 trigger signal inputs is normal, the normal trigger control of the corresponding valve section can be ensured.

[0108] 2 output interfaces of the 5-in-16 optical splitter output 2 inspection signals that are respectively connected to the receiving boards of the master and slave systems. The inspection signals are directly connected from the output of the 5-in-16 optical splitter to the receiving board of the VBE, without passing through the optical splitter device for splitting in the middle. The inspection signal link is independent and does not pass through a single component. The redundant systems respectively detect the trigger channels of their own systems, with high reliability. The last 1 output interface of the 5-in-16 optical splitter is a spare interface.

[0109] A fully redundant trigger device for a UHVDC transmission converter valve provided by the present invention provides a new trigger architecture for the converter valve, realizes the full redundancy of the trigger board cards and circuits, and reliably monitors the trigger channels, solving the problem of DC outage caused by a single component failure;

[0110] The present invention realizes a fully redundant trigger architecture design by using a 1 to 16 optical splitter based on a small core diameter 62.5 / 125um optical fiber, filling the domestic gap;

[0111] As long as one emission board in the present invention works normally, it can provide trigger pulses with sufficient power to reliably trigger thyristors;

[0112] When any one emission board in the present invention fails, another emission board in the main system can still keep the trigger channel working normally. When both emission boards in the main system fail, VBE can request to switch to another set of slave systems, and the converter valve can maintain the normal operation of a single system, that is, when the emission board of the system circuit board fails, VBE can still maintain the normal operation of a single system; when the trigger optical fiber corresponding to any emission board fails, it can be replaced with a spare optical fiber, allowing the converter valve to handle the failures of the emission board and the trigger optical fiber without outage;

[0113] Compared with the traditional scheme, the redundancy of the trigger circuit in the present invention is greatly improved, solving the problem that power outage is required to restore redundancy when the emission board, trigger optical fiber, receiving board, and feedback optical fiber fail.

[0114] Embodiment 2

[0115] The present invention also provides a fully redundant trigger method for a UHVDC transmission converter valve, which is applied to the fully redundant trigger device of the above-mentioned UHVDC transmission converter valve, as Figure 5 shown, including:

[0116] Step 11: When the first trigger and monitoring chassis is the main system, use the first main control board to generate a trigger signal, and send the trigger signal to the first optical splitter through the first trigger optical link;

[0117] When the second trigger and monitoring chassis is the standby system, use the second main control board to be in a hot standby state;

[0118] Step 12: Use the first optical splitter to perform optical multiplexing on the trigger signal, and send the optically multiplexed trigger signal to multiple thyristor control units.

[0119] Further, in step 11, sending the trigger signal to the first optical splitter through the first trigger optical link includes:

[0120] Use the first emission board and the second emission board to send the trigger signal generated by the first main control board to the first optical splitter.

[0121] Further, the method further includes:

[0122] When the first trigger and monitoring chassis is the standby system, use the first main control board to be in a hot standby state;

[0123] When the second trigger and the monitoring chassis are the primary systems, a trigger signal is generated by the second main control board and sent to the first optical splitter through the second trigger optical link.

[0124] Further, sending the trigger signal to the first optical splitter through the second trigger optical link includes:

[0125] Using the third transmitting board and the fourth transmitting board to send the trigger signal generated by the second main control board to the first optical splitter.

[0126] Further, the method further includes:

[0127] Using the first optical splitter to send the trigger link inspection signal to the first receiving board and the second receiving board respectively, so that the first receiving board sends the trigger link inspection signal to the first main control board, and the second receiving board sends the trigger link inspection signal to the second main control board.

[0128] Further, the method further includes:

[0129] Using the second optical splitter to distribute and multiplex the status signals reported by multiple thyristor control units, and sending the distributed and multiplexed status signals to the first receiving board and the second receiving board, so that the first receiving board sends the distributed and multiplexed status signals to the first main control board, and the second receiving board sends the distributed and multiplexed status signals to the second main control board.

[0130] It can be understood that the method embodiments provided above correspond to the above device embodiments, and the corresponding specific contents can be referred to each other, which will not be elaborated here.

[0131] It can be understood that the same or similar parts in the above embodiments can be referred to each other, and the content not detailed in some embodiments can be seen in the same or similar content of other embodiments.

[0132] Embodiment III

[0133] As Figure 6 shown, the present invention further provides an electronic device, which may be a computer device, a single-chip microcomputer device, a smart mobile device, etc. The electronic device in this embodiment may include a processor, a memory, a transceiver component, etc. The memory, the processor, and the transceiver component are connected through a bus; the memory can be used to store an execution program, and the exemplary execution program may include instructions; the processor is used to execute the instructions stored in the memory. The memory can also be used to store data, and the data can be called and / or modified when the instructions are executed.

[0134] The processor may be a Central Processing Unit (CPU), or may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field-Programmable Gate Arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. It is the computing core and control core of the terminal, and is suitable for implementing one or more instructions. Specifically, it is suitable for loading and executing one or more instructions in the storage medium to implement the corresponding method flow or corresponding function, so as to implement the steps of a fully redundant triggering method for a UHVDC converter valve in the above embodiments.

[0135] Embodiment 4

[0136] Based on the same inventive concept, the present invention also provides a readable storage medium, specifically an electronic device-readable storage medium (Memory). The electronic device-readable storage medium is a memory device in the electronic device, used to store programs and data. It can be understood that the storage medium here can include both the built-in storage medium in the electronic device and, of course, the extended storage medium supported by the electronic device. The storage medium provides a storage space, and this storage space stores the operating system of the terminal. And, in this storage space, there are also stored one or more instructions suitable for being loaded and executed by the processor. These instructions can be one or more executable programs (including program codes). It should be noted that the storage medium here can be a high-speed RAM memory or a non-volatile memory, such as at least one disk memory. By the processor loading and executing one or more instructions stored in the storage medium, the steps of a fully redundant triggering method for a UHVDC converter valve in the above embodiments can be implemented.

[0137] Those skilled in the art should understand that the embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memories, CD-ROMs, optical memories, etc.) containing computer-usable program codes.

[0138] The present invention is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to embodiments of the present invention. It should be understood that each flow and / or block in the flowchart and / or block diagram, and the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices generate means for implementing the functions specified in one flow Figure 1 one flow or multiple flows and / or blocks Figure 1 or in multiple blocks.

[0139] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including instruction means that implement the functions specified in one flow Figure 1 one flow or multiple flows and / or blocks Figure 1 or in multiple blocks.

[0140] These computer program instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one flow Figure 1 one flow or multiple flows and / or blocks Figure 1 or in multiple blocks.

[0141] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications or equivalent replacements can still be made to the specific embodiments of the present invention. Any modification or equivalent replacement without departing from the spirit and scope of the present invention shall be covered by the protection scope of the claims of the present invention.

Claims

1. A fully redundant trigger device for a UHVDC converter valve, characterized in that, Including: A valve control device and a converter valve; The valve control device includes: a first trigger and monitoring chassis and a second trigger and monitoring chassis; the first trigger and monitoring chassis includes: a first main control board and a first trigger optical link; the second trigger and monitoring chassis includes: a second main control board and a second trigger optical link; the converter valve includes: a first optical splitter and a plurality of thyristor control units; The first main control board is connected to the first optical splitter through the first trigger optical link, the second main control board is connected to the first optical splitter through the second trigger optical link, and the first optical splitter is connected to the plurality of thyristor control units; The first main control board is configured to generate a trigger signal when the first trigger and monitoring chassis is the main system, and send the trigger signal to the first optical splitter through the first trigger optical link; The second main control board is configured to be in a hot standby state when the second trigger and monitoring chassis is the standby system; The first optical splitter is configured to perform optical splitting multiplexing on the trigger signal and send the optically split multiplexed trigger signal to the plurality of thyristor control units.

2. The device according to claim 1, characterized in that The first main control board is further configured to be in a hot standby state when the first trigger and monitoring chassis is the standby system; The second main control board is further configured to generate a trigger signal when the second trigger and monitoring chassis is the main system, and send the trigger signal to the first optical splitter through the second trigger optical link.

3. The device according to claim 1, wherein The first trigger optical link includes: a first transmitting board and a second transmitting board; the second trigger optical link includes: a third transmitting board and a fourth transmitting board; The first main control board is connected to the first optical splitter through the first transmitting board and the second transmitting board; The second main control board is connected to the first optical splitter through the third transmitting board and the fourth transmitting board.

4. The device according to claim 3, characterized in that, Both the first transmitting board and the second transmitting board are configured to send the trigger signal generated by the first main control board to the first optical splitter; Both the third transmitting board and the fourth transmitting board are configured to send the trigger signal generated by the second main control board to the first optical splitter.

5. The device according to claim 3, characterized in that, Both the first transmitting board and the second transmitting board include: a plurality of high-power laser transmitters.

6. The device according to claim 3, characterized in that, The valve control device further includes: a second optical splitter; the first trigger and monitoring chassis further includes: a plurality of first receiving boards; the second trigger and monitoring chassis further includes: a plurality of second receiving boards; the plurality of first receiving boards and the plurality of second receiving boards form a feedback optical link; The second optical splitter is connected to the plurality of thyristor control units; The second optical splitter, the first receiving board and the first main control board are connected in sequence; The second optical splitter, the second receiving board and the second main control board are connected in sequence.

7. The device according to claim 6, characterized in that, The first optical splitter is further configured to: Send trigger link inspection signals to the first receiving board and the second receiving board respectively.

8. The device according to claim 7, characterized in that, The second optical splitter is configured to perform distribution multiplexing on the status signals reported by the plurality of thyristor control units and send the distribution multiplexed status signals to the first receiving board and the second receiving board; The first receiving board is used to send the status signal after distribution multiplexing to the first main control board; and send the trigger link inspection signal to the first main control board; The second receiving board is used to send the status signal after distribution multiplexing to the second main control board; and send the trigger link inspection signal to the second main control board.

9. The device according to claim 6, wherein The first optical splitter is a 5-to-16 optical splitter based on a small-core 62.5 / 125um optical fiber; The second optical splitter is a 1-to-2 optical splitter.

10. The device according to claim 9, characterized in that, The first optical splitter includes: 5 input interfaces and 16 output interfaces; the 5 input interfaces include: 4 main input interfaces and 1 spare input interface; the 16 output interfaces include: 13 main output interfaces, 1 spare output interface, a first inspection interface and a second inspection interface The first transmitting board, the second transmitting board, the third transmitting board and the fourth transmitting board are each connected to one of the main input interfaces; Each main output interface is connected to one thyristor control unit, the first inspection interface is connected to the first receiving board, and the second inspection interface is connected to the second receiving board.

11. A complete redundancy triggering method for a converter valve of extra-high voltage direct current transmission, the method being applied to the complete redundancy triggering device of the converter valve of extra-high voltage direct current transmission according to any one of claims 1-10, characterized in that, Including: When the first trigger and monitoring chassis is the primary system, a trigger signal is generated by the first main control board and sent to the first optical splitter through the first trigger optical link; When the second trigger and monitoring chassis is the standby system, the second main control board is in a hot standby state; The first optical splitter is used to perform optical splitting multiplexing on the trigger signal and send the trigger signal after optical splitting multiplexing to multiple thyristor control units.

12. The method according to claim 11, wherein It also includes: When the first trigger and monitoring chassis is the standby system, the first main control board is in a hot standby state; When the second trigger and monitoring chassis is the primary system, a trigger signal is generated by the second main control board and sent to the first optical splitter through the second trigger optical link.

13. The method according to claim 11, wherein The sending of the trigger signal to the first optical splitter through the first trigger optical link includes: Using the first transmitting board and the second transmitting board to send the trigger signal generated by the first main control board to the first optical splitter.

14. The method according to claim 12, wherein The sending of the trigger signal to the first optical splitter through the second trigger optical link includes: Using the third transmitting board and the fourth transmitting board to send the trigger signal generated by the second main control board to the first optical splitter.

15. The method according to claim 11, wherein It also includes: Using the first optical splitter to send the trigger link inspection signal to the first receiving board and the second receiving board respectively, so that the first receiving board sends the trigger link inspection signal to the first main control board, and the second receiving board sends the trigger link inspection signal to the second main control board.

16. The method according to claim 15, characterized in that It also includes: Using the second optical splitter to perform distribution multiplexing on the status signals reported by multiple thyristor control units and send the status signals after distribution multiplexing to the first receiving board and the second receiving board, so that the first receiving board sends the status signals after distribution multiplexing to the first main control board, and the second receiving board sends the status signals after distribution multiplexing to the second main control board.

17. An electronic device, characterized in that, Including: At least one processor and a memory; The memory and the processor are connected by a bus; The memory is configured to store one or more programs; When the one or more programs are executed by the at least one processor, a complete redundancy triggering method for an extra-high voltage direct current (UHVDC) transmission converter valve as claimed in any one of claims 11 to 16 is implemented.

18. A readable storage medium, characterized in that, An execution program is stored thereon, and when the execution program is executed, a complete redundancy triggering method for an extra-high voltage direct current (UHVDC) transmission converter valve as claimed in any one of claims 11 to 16 is implemented.

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