CN115622374B - Trigger system of converter valve and control system for direct current transmission system - Google Patents
Trigger system of converter valve and control system for direct current transmission system Download PDFInfo
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- CN115622374B CN115622374B CN202211170344.8A CN202211170344A CN115622374B CN 115622374 B CN115622374 B CN 115622374B CN 202211170344 A CN202211170344 A CN 202211170344A CN 115622374 B CN115622374 B CN 115622374B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 39
- 230000003287 optical effect Effects 0.000 claims abstract description 180
- 230000008878 coupling Effects 0.000 claims abstract description 29
- 238000010168 coupling process Methods 0.000 claims abstract description 29
- 238000005859 coupling reaction Methods 0.000 claims abstract description 29
- 230000001960 triggered effect Effects 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 9
- 230000006870 function Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000004590 computer program Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
- H02M1/092—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices the control signals being transmitted optically
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/268—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for dc systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
Abstract
The application relates to the technical field of control of a converter valve in direct-current transmission, and provides a trigger system of the converter valve and a control system for a direct-current transmission system. In the application, each two optical emission plates are used for emitting trigger pulses under the control of the same converter valve control system, each optical splitter at the first stage is used for receiving the trigger pulses emitted by one optical emission plate and distributing the trigger pulses to all optical splitters at the second stage, each optical splitter at the second stage is used for receiving and coupling the trigger pulses emitted by all optical splitters at the first stage, distributing the coupled trigger pulses to all optical splitters at the third stage, each optical splitter at the third stage is used for receiving and coupling the trigger pulses emitted by all optical splitters at the second stage and sending the trigger pulses to one thyristor in the converter valve so as to trigger the thyristor, and the effect that any optical splitter in a loop fails and normal triggering of the converter valve is not affected is realized.
Description
Technical Field
The application relates to the technical field of control of a converter valve in direct-current transmission, in particular to a trigger system of the converter valve and a control system for a direct-current transmission system.
Background
In a traditional direct current transmission system, a converter valve consists of a plurality of thyristors, each converter valve control system controls two light emitting plates to send trigger pulses to the same optical splitter, and the optical splitter couples the received trigger pulses and then distributes and outputs the received trigger pulses to the thyristors evenly for triggering the converter valve.
At this time, if the optical splitter fails, all thyristors receiving the trigger pulse of the optical splitter cannot be triggered, which directly causes tripping of the direct current transmission system, and the system stability is poor.
Disclosure of Invention
In view of the above, it is necessary to provide a trigger system for a converter valve and a control system for a dc power transmission system.
The application provides a triggering system of a converter valve, which comprises: an optical transmitting plate, three levels of optical splitters;
Each two light emitting plates are used for emitting trigger pulses under the control of the same converter valve control system;
Each optical splitter of the first stage is used for receiving the trigger pulse sent by one optical transmitting plate and distributing the trigger pulse to all optical splitters of the second stage;
each optical splitter of the second stage is used for receiving and coupling trigger pulses sent by all optical splitters of the first stage, and distributing the trigger pulses obtained by coupling to all optical splitters of the third stage;
each optical splitter of the third stage is used for receiving and coupling trigger pulses sent by all optical splitters of the second stage and sending the trigger pulses to a thyristor in the converter valve so as to trigger the thyristor;
and if the preset number of thyristors are not triggered normally, tripping the direct current transmission system.
In one embodiment, the trigger conditions for the light emitting panel to be controlled by the converter valve control system are: and the high-voltage direct-current control system transmits a trigger instruction to the converter valve control system.
In one embodiment, the converter valve control system includes: the main converter valve control system and the standby converter valve control system can be in intersystem communication, and when the main converter valve control system works normally, the standby converter valve control system does not work.
In one embodiment, the allocation for the above-described trigger is an average allocation.
In one embodiment, the ratio of the numbers among the converter valve control system, the optical transmitting plate, the optical splitter of the first stage, the optical splitter of the second stage, and the optical splitter of the third stage is 1:2:2: a: b, wherein a and b are natural numbers greater than 0.
Meanwhile, the application also provides a control system for the direct current transmission system, which comprises:
The triggering system, the converter valve control system and the converter valve of any embodiment; the converter valve comprises a plurality of groups of thyristors, each thyristor in each group of thyristors is connected in series, and the running state of each thyristor in the plurality of groups of thyristors is consistent;
The single converter valve control system is used for controlling the two light emitting plates of the trigger system to emit trigger pulses;
and if the preset number of thyristors in the converter valve are not triggered normally, tripping the direct current transmission system.
In one embodiment, the trigger conditions for the light emitting panel to be controlled by the converter valve control system are: and the high-voltage direct-current control system transmits a trigger instruction to the converter valve control system.
In one embodiment, the converter valve control system includes: the main converter valve control system and the standby converter valve control system can be in intersystem communication, and when the main converter valve control system works normally, the standby converter valve control system does not work.
In one embodiment, the allocation for the above-described trigger is an average allocation.
In one embodiment, the ratio of the numbers among the converter valve control system, the optical transmitting plate, the optical splitter of the first stage, the optical splitter of the second stage, and the optical splitter of the third stage is 1:2:2: a: b, wherein a and b are natural numbers greater than 0.
The trigger system of the converter valve and the control system aiming at the direct current transmission system are characterized in that each two light emitting plates are used for emitting trigger pulses under the control of the same converter valve control system; each optical splitter of the first stage is used for receiving the trigger pulse sent by one optical transmitting plate and distributing the trigger pulse to all optical splitters of the second stage; each optical splitter of the second stage is used for receiving and coupling trigger pulses sent by all optical splitters of the first stage, and distributing the trigger pulses obtained by coupling to all optical splitters of the third stage; each optical splitter of the third stage is used for receiving and coupling trigger pulses sent by all optical splitters of the second stage and sending the trigger pulses to a thyristor in the converter valve so as to trigger the thyristor; if the preset number of thyristors are not triggered normally, the direct current transmission system is tripped, so that each group of thyristors connected in series are redundant devices, and no one optical splitter in the loop fails, normal triggering of a converter valve is not affected, and working stability and reliability of the direct current transmission system are greatly improved.
Drawings
FIG. 1 is a diagram of electrical connections for a converter valve in a DC power transmission system according to one embodiment;
Fig. 2 is an application scenario diagram of a triggering system for a converter valve and a control system for a dc power transmission system in one embodiment;
FIG. 3 is a schematic diagram of a HVDC control system triggered converter valve control system in one embodiment;
FIG. 4 is an application scenario diagram based on a primary and backup converter valve control system in one embodiment;
fig. 5 is an application scenario diagram based on a non-redundant optical splitter in one embodiment.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the described embodiments of the application may be combined with other embodiments.
In a direct current transmission system, the normal triggering of a converter valve requires: the converter valve control system controls the light emitting plate to emit trigger pulse, and the trigger pulse is transmitted to the trigger end of the thyristor converter valve through the optical fiber. Fig. 1 is a diagram of the electrical connections of a common converter valve for engineering, where for one valve at the box in the diagram, 4 groups of 13 thyristors are typically connected in series at the engineering site, and the operation states of the 4×13 thyristors remain the same.
In one embodiment, taking the triggering of a group of 1×13 thyristors as an example, as shown in fig. 2, there is provided a triggering system of a converter valve, the triggering system including: an optical transmitting plate, three levels of optical splitters;
Each two light emitting plates are used for emitting trigger pulses under the control of the same converter valve control system;
Each optical splitter of the first stage is used for receiving the trigger pulse sent by one optical transmitting plate and distributing the trigger pulse to all optical splitters of the second stage;
each optical splitter of the second stage is used for receiving and coupling trigger pulses sent by all optical splitters of the first stage, and distributing the trigger pulses obtained by coupling to all optical splitters of the third stage;
Each optical splitter of the third stage is used for receiving and coupling trigger pulses sent by all optical splitters of the second stage and sending the trigger pulses to a thyristor in the converter valve so as to trigger the thyristor; and if the preset number of thyristors are not triggered normally, tripping the direct current transmission system.
In dc power transmission, when the converter valve control system considers that the number of thyristor faults exceeds a threshold (the number of faults cannot exceed 5 in each valve of 4×13 in current dc engineering), the corresponding dc power transmission system is directly tripped.
The triggering system of the converter valve comprises: an optical transmitting plate, three levels of optical splitters; each two light emitting plates send out trigger pulses under the control of the same converter valve control system; each optical splitter of the first stage is used for receiving the trigger pulse sent by one optical transmitting plate and distributing the trigger pulse to all optical splitters of the second stage; each optical splitter of the second stage is used for receiving and coupling trigger pulses sent by all optical splitters of the first stage, and distributing the trigger pulses obtained by coupling to all optical splitters of the third stage; each optical splitter of the third stage is used for receiving and coupling trigger pulses sent by all optical splitters of the second stage and sending the trigger pulses to a thyristor in the converter valve so as to trigger the thyristor; if the preset number of thyristors are not triggered normally, the direct current transmission system is tripped, so that each group of thyristors connected in series are redundant devices, and no one optical splitter in the loop fails, normal triggering of a converter valve is not affected, and working stability and reliability of the direct current transmission system are greatly improved.
In one embodiment, the trigger conditions for the light emitting panel to be controlled by the converter valve control system are: and the high-voltage direct-current control system transmits a trigger instruction to the converter valve control system.
Referring to fig. 3, when the converter valve control system receives a trigger command issued by the high-voltage direct-current control system, control information is sent to the corresponding transmitting plate, and the corresponding light transmitting plate is controlled to send trigger pulses.
In one embodiment, the converter valve control system includes: the main converter valve control system and the standby converter valve control system can be in intersystem communication, and when the main converter valve control system works normally, the standby converter valve control system does not work.
Referring to fig. 4, the converter valve control system a is a main converter valve control system, and the converter valve control system B is a standby converter valve control system.
In one embodiment, the allocation for the above-described trigger is an average allocation.
The optical splitter realizes the function of internally coupling trigger pulses of all input ends and then averagely distributing the trigger pulses into a plurality of trigger pulses to be output through an output end.
In one embodiment, the ratio of the numbers among the converter valve control system, the optical transmitting plate, the optical splitter of the first stage, the optical splitter of the second stage, and the optical splitter of the third stage is 1:2:2: a: b, wherein a and b are natural numbers greater than 0.
As described with reference to fig. 4, the main converter valve control system a controls 2 optical transmitting boards A1 and A2, the optical transmitting board A1 transmits a trigger pulse to a first-stage optical splitter a11, the optical transmitting board A2 transmits a trigger pulse to a first-stage optical splitter a22, at this time, the optical splitters a11 and a22 of the first stage transmit the trigger pulse to each of the optical splitters 1 and 2 of the second stage, the optical splitters 1 and 2 of the second stage couple and transmit the trigger pulse to each of the optical splitters of the third stage, and each of the optical splitters of the third stage transmits the trigger pulse to a thyristor for triggering the thyristor. The standby converter valve control system B controls 2 optical transmitting plates B1 and B2, the optical transmitting plate B1 transmits a trigger pulse to a first-stage optical splitter B11, the optical transmitting plate B2 transmits a trigger pulse to a first-stage optical splitter B22, at this time, the optical splitters B11 and B22 of the first stage transmit the trigger pulse to each of the optical splitters 1 and 2 of the second stage in a distributed manner, the optical splitters 1 and 2 of the second stage couple and transmit the trigger pulse to each of the optical splitters of the third stage, and each of the optical splitters of the third stage transmits the trigger pulse to a thyristor for triggering the thyristor. Under the condition, no matter what change happens to the number of the second-stage optical splitters and the number of the third-stage optical splitters, as long as each second-stage optical splitter receives the trigger pulse sent by each first-stage optical splitter, each third-stage optical splitter receives the laser pulse sent by each second-stage optical splitter and sends the trigger pulse to each thyristor, any optical splitter in the loop fails, and normal triggering of the converter valve is not affected.
In one embodiment, a control system for a dc power transmission system is provided, and referring to fig. 2, the control system includes:
a triggering system, a converter valve control system, a converter valve according to any of the embodiments; the converter valve comprises a plurality of groups of thyristors, each thyristor in each group of thyristors is connected in series, and the running state of each thyristor in the plurality of groups of thyristors is consistent;
The single converter valve control system is used for controlling the two light emitting plates of the trigger system to emit trigger pulses;
and if the preset number of thyristors in the converter valve are not triggered normally, tripping the direct current transmission system.
The control system for the direct current transmission system is characterized in that each two light emitting plates are used for emitting trigger pulses under the control of the same converter valve control system; each optical splitter of the first stage is used for receiving the trigger pulse sent by one optical transmitting plate and distributing the trigger pulse to all optical splitters of the second stage; each optical splitter of the second stage is used for receiving and coupling trigger pulses sent by all optical splitters of the first stage, and distributing the trigger pulses obtained by coupling to all optical splitters of the third stage; each optical splitter of the third stage is used for receiving and coupling trigger pulses sent by all optical splitters of the second stage and sending the trigger pulses to a thyristor in the converter valve so as to trigger the thyristor; if the preset number of thyristors are not triggered normally, the direct current transmission system is tripped, so that each group of thyristors connected in series are redundant devices, and no one optical splitter in the loop fails, normal triggering of a converter valve is not affected, and working stability and reliability of the direct current transmission system are greatly improved.
In one embodiment, the trigger conditions for the light emitting panel to be controlled by the converter valve control system are: and the high-voltage direct-current control system transmits a trigger instruction to the converter valve control system.
In one embodiment, the converter valve control system includes: the main converter valve control system and the standby converter valve control system can be in intersystem communication, and when the main converter valve control system works normally, the standby converter valve control system does not work.
In one embodiment, the allocation for the above-described trigger is an average allocation.
In one embodiment, the ratio of the numbers among the converter valve control system, the optical transmitting plate, the optical splitter of the first stage, the optical splitter of the second stage, and the optical splitter of the third stage is 1:2:2: a: b, wherein a and b are natural numbers greater than 0.
For a better understanding of the above method, an example of the application of the control system of the present application to a dc power transmission system is described in detail below.
In dc power transmission, the normal triggering of the converter valve requires: the converter valve control system controls the light emitting plate to emit trigger pulse, and the trigger pulse is transmitted to the trigger end of the thyristor converter valve through the optical fiber. Fig. 1 is a diagram of the electrical connections of a common converter valve for engineering, where for one valve at the box in the diagram, 4 groups of 13 thyristors are typically connected in series at the engineering site, and the operation states of the 4×13 thyristors remain the same. Taking a trigger loop of a group of 1×13 thyristors as an example, the system structure of the prior art is described with reference to fig. 5:
The converter valve control system is divided into an AB (primary converter valve control system and a secondary converter valve control system) and is not operated when the primary converter valve control system is in normal operation, the converter valve control system is used for receiving a trigger instruction issued by the high-voltage direct-current control system, controlling the two light emitting board cards to emit trigger laser pulses, the trigger pulses are input into the light splitter (the light splitter realizes the function of internally coupling the trigger pulses of all input ends and then evenly distributing the trigger pulses into a plurality of trigger pulses to be output through the output ends, the number of the input ends is n, the number of the output ends is m and then can be called as an n multiplied by m light splitter), and the light splitter outputs 13 paths of trigger pulses to each thyristor to trigger the thyristor.
Referring to fig. 5, it can be seen that the optical splitter is a non-redundant device (each group of thyristors connected in series only corresponds to 1 optical splitter), if the optical splitter is damaged, 13 thyristors corresponding to the optical splitter cannot be triggered normally, and when the converter valve control system considers that the number of faults of the thyristors exceeds a threshold value (the number of faults in each valve of 4×13 in the current direct current engineering cannot exceed 5), the corresponding direct current transmission system is directly tripped, which greatly influences the stability and reliability of the work of the direct current transmission system.
As described with reference to fig. 4, in this embodiment, the converter valve includes a plurality of sets of thyristors, and each thyristor in each set of thyristors is connected in series, where the operating states of each thyristor in the plurality of sets of thyristors are consistent;
Each two light emitting plates are used for emitting trigger pulses under the control of the same converter valve control system;
The triggering conditions of the light emitting plate controlled by the converter valve control system are as follows: and the high-voltage direct-current control system transmits a trigger instruction to the converter valve control system. When the converter valve control system receives a trigger instruction issued by the high-voltage direct-current control system, control information is sent to the corresponding transmitting plate, and the corresponding light transmitting plate is controlled to send trigger pulses. The converter valve control system includes: the main converter valve control system and the standby converter valve control system can be in intersystem communication, and when the main converter valve control system works normally, the standby converter valve control system does not work.
Each optical splitter of the first stage is used for receiving the trigger pulse sent by one optical transmitting plate and distributing the trigger pulse to all optical splitters of the second stage; each optical splitter of the second stage is used for receiving and coupling trigger pulses sent by all optical splitters of the first stage, and distributing the trigger pulses obtained by coupling to all optical splitters of the third stage; each optical splitter of the third stage is used for receiving and coupling trigger pulses sent by all optical splitters of the second stage and sending the trigger pulses to a thyristor in the converter valve so as to trigger the thyristor;
and if the preset number of thyristors are not triggered normally, tripping the direct current transmission system.
The trigger pulse distribution is average distribution, and the function realized by the optical splitter is to distribute the trigger pulses of all the input ends into a plurality of trigger pulses again after internal coupling and output the trigger pulses through the output end. In this embodiment, the ratio of the numbers of the converter valve control system, the optical transmitting plate, the optical splitter of the first stage, the optical splitter of the second stage, and the optical splitter of the third stage is 1:2:2: a: b, wherein a and b are natural numbers greater than 0.
As described with reference to fig. 4, the main converter valve control system a controls 2 optical transmitting boards A1 and A2, the optical transmitting board A1 transmits a trigger pulse to a first-stage optical splitter a11, the optical transmitting board A2 transmits a trigger pulse to a first-stage optical splitter a22, at this time, the optical splitters a11 and a22 of the first stage transmit the trigger pulse to each of the optical splitters 1 and 2 of the second stage, the optical splitters 1 and 2 of the second stage couple and transmit the trigger pulse to each of the optical splitters of the third stage, and each of the optical splitters of the third stage transmits the trigger pulse to a thyristor for triggering the thyristor. The standby converter valve control system B controls 2 optical transmitting plates B1 and B2, the optical transmitting plate B1 transmits a trigger pulse to a first-stage optical splitter B11, the optical transmitting plate B2 transmits a trigger pulse to a first-stage optical splitter B22, at this time, the optical splitters B11 and B22 of the first stage transmit the trigger pulse to each of the optical splitters 1 and 2 of the second stage in a distributed manner, the optical splitters 1 and 2 of the second stage couple and transmit the trigger pulse to each of the optical splitters of the third stage, and each of the optical splitters of the third stage transmits the trigger pulse to a thyristor for triggering the thyristor. Under the condition, no matter what change happens to the number of the second-stage optical splitters and the number of the third-stage optical splitters, as long as each second-stage optical splitter receives the trigger pulse sent by each first-stage optical splitter, each third-stage optical splitter receives the laser pulse sent by each second-stage optical splitter and sends the trigger pulse to each thyristor, any optical splitter in the loop fails, and normal triggering of the converter valve is not affected.
The control system for the direct current transmission system is characterized in that each two light emitting plates are used for emitting trigger pulses under the control of the same converter valve control system; each optical splitter of the first stage is used for receiving the trigger pulse sent by one optical transmitting plate and distributing the trigger pulse to all optical splitters of the second stage; each optical splitter of the second stage is used for receiving and coupling trigger pulses sent by all optical splitters of the first stage, and distributing the trigger pulses obtained by coupling to all optical splitters of the third stage; each optical splitter of the third stage is used for receiving and coupling trigger pulses sent by all optical splitters of the second stage and sending the trigger pulses to a thyristor in the converter valve so as to trigger the thyristor; if the preset number of thyristors are not triggered normally, the direct current transmission system is tripped, so that each group of thyristors connected in series are redundant devices, and no one optical splitter in the loop fails, normal triggering of a converter valve is not affected, and working stability and reliability of the direct current transmission system are greatly improved.
Those skilled in the art will appreciate that implementing all or part of the above-described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, or the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory. By way of illustration, and not limitation, RAM can be in various forms such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), etc.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (10)
1. A trigger system for a converter valve, the trigger system comprising: an optical transmitting plate, three levels of optical splitters;
Each two light emitting plates are used for emitting trigger pulses under the control of the same converter valve control system;
Each optical splitter of the first stage is used for receiving the trigger pulse sent by one optical transmitting plate and equally distributing all the optical splitters of the second stage;
Each optical splitter of the second stage is used for receiving and coupling trigger pulses sent by all optical splitters of the first stage, and distributing the trigger pulses obtained by coupling to all optical splitters of the third stage in an average mode;
each optical splitter of the third stage is used for receiving and coupling trigger pulses sent by all optical splitters of the second stage and sending the trigger pulses to a thyristor in the converter valve so as to trigger the thyristor;
and if the preset number of thyristors are not triggered normally, tripping the direct current transmission system.
2. The triggering system as recited in claim 1, wherein the triggering conditions for the light emitting panel to be controlled by the converter valve control system are: and the high-voltage direct-current control system transmits a trigger instruction to the converter valve control system.
3. The trigger system of claim 1, wherein when the converter valve control system receives a trigger command issued by the high voltage dc control system, control information is sent to the corresponding light emitting plate to control the corresponding light emitting plate to send a trigger pulse.
4. The trigger system of claim 1, wherein the converter valve control system comprises: the main converter valve control system and the standby converter valve control system can be in intersystem communication, and when the main converter valve control system works normally, the standby converter valve control system does not work.
5. The trigger system of claim 1, wherein the ratio of the number of the converter valve control system, the optical transmitting plate, the first-stage optical splitter, the second-stage optical splitter, and the third-stage optical splitter is 1:2:2: a: b, wherein a and b are natural numbers greater than 0.
6. A control system for a direct current transmission system, the control system comprising:
a trigger system, a converter valve control system, a converter valve according to any of claims 1 to 5; the converter valve comprises a plurality of groups of thyristors, each thyristor in each group of thyristors is connected in series, and the running state of each thyristor in the plurality of groups of thyristors is consistent;
The single converter valve control system is used for controlling the two light emitting plates of the trigger system to emit trigger pulses;
and if the preset number of thyristors in the converter valve are not triggered normally, tripping the direct current transmission system.
7. The control system of claim 6, wherein the converter valve control system is configured to control the light emitting plate of the trigger system to emit a trigger pulse when receiving a trigger command issued by the hvdc control system.
8. The control system of claim 6, wherein when the converter valve control system receives a trigger command issued by the high voltage dc control system, control information is sent to the corresponding light emitting panel to control the corresponding light emitting panel to send a trigger pulse.
9. The control system of claim 6, wherein the converter valve control system comprises: the main converter valve control system and the standby converter valve control system can be in intersystem communication, and when the main converter valve control system works normally, the standby converter valve control system does not work.
10. The control system according to claim 6, wherein a ratio of the number of the converter valve control system, the optical transmitting plate, the optical splitter of the first stage, the optical splitter of the second stage, and the optical splitter of the third stage is 1:2:2: a: b, wherein a and b are natural numbers greater than 0.
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| CN202211170344.8A CN115622374B (en) | 2022-09-22 | 2022-09-22 | Trigger system of converter valve and control system for direct current transmission system |
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| CN202211170344.8A CN115622374B (en) | 2022-09-22 | 2022-09-22 | Trigger system of converter valve and control system for direct current transmission system |
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| CN115622374B true CN115622374B (en) | 2024-04-26 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101576639A (en) * | 2009-03-30 | 2009-11-11 | 中国科学院等离子体物理研究所 | Redundancy-synchronization-isolation control method for parallel connection or serial connection of power devices |
| CN101964926A (en) * | 2009-07-22 | 2011-02-02 | 华为技术有限公司 | Light signal transmission method and system |
| JP2011193263A (en) * | 2010-03-15 | 2011-09-29 | Nec Access Technica Ltd | Optical signal redundant system, optical signal distribution device and optical signal redundant method |
| CN103828389A (en) * | 2011-07-07 | 2014-05-28 | 阿尔卡特朗讯 | Apparatus and method for protection in a data center |
| CN110994566A (en) * | 2019-12-04 | 2020-04-10 | 南京南瑞继保工程技术有限公司 | Mechanical switch trigger circuit and control method |
| CN112039588A (en) * | 2020-07-24 | 2020-12-04 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Optical fiber communication architecture and method for conventional direct current converter valve control protection system |
| KR20210048204A (en) * | 2019-10-23 | 2021-05-03 | 한국전자통신연구원 | Method and apparatus for high voltage direct current system |
-
2022
- 2022-09-22 CN CN202211170344.8A patent/CN115622374B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101576639A (en) * | 2009-03-30 | 2009-11-11 | 中国科学院等离子体物理研究所 | Redundancy-synchronization-isolation control method for parallel connection or serial connection of power devices |
| CN101964926A (en) * | 2009-07-22 | 2011-02-02 | 华为技术有限公司 | Light signal transmission method and system |
| JP2011193263A (en) * | 2010-03-15 | 2011-09-29 | Nec Access Technica Ltd | Optical signal redundant system, optical signal distribution device and optical signal redundant method |
| CN103828389A (en) * | 2011-07-07 | 2014-05-28 | 阿尔卡特朗讯 | Apparatus and method for protection in a data center |
| KR20210048204A (en) * | 2019-10-23 | 2021-05-03 | 한국전자통신연구원 | Method and apparatus for high voltage direct current system |
| CN110994566A (en) * | 2019-12-04 | 2020-04-10 | 南京南瑞继保工程技术有限公司 | Mechanical switch trigger circuit and control method |
| CN112039588A (en) * | 2020-07-24 | 2020-12-04 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Optical fiber communication architecture and method for conventional direct current converter valve control protection system |
| WO2022017246A1 (en) * | 2020-07-24 | 2022-01-27 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Optical fiber communication architecture and method for conventional direct-current converter valve control and protection system |
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