CN206211872U - Modular multilevel converter control system - Google Patents
Modular multilevel converter control system Download PDFInfo
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- CN206211872U CN206211872U CN201621272678.6U CN201621272678U CN206211872U CN 206211872 U CN206211872 U CN 206211872U CN 201621272678 U CN201621272678 U CN 201621272678U CN 206211872 U CN206211872 U CN 206211872U
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- Prior art keywords
- submodule
- control system
- power supply
- level converter
- modularization multi
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- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 239000013307 optical fiber Substances 0.000 claims description 18
- 230000005611 electricity Effects 0.000 claims description 5
- 238000004891 communication Methods 0.000 abstract description 12
- 239000000835 fiber Substances 0.000 abstract 1
- 230000008054 signal transmission Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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Abstract
The utility model discloses a many level of modularization transverter control system relates to direct current transmission technical field, has solved current many level of modularization transverter based on the direct current transmission system, when the optic fibre communication between certain submodule piece of many level of modularization transverter and the control module breaks down, this submodule piece just can't and the control module between the communication, lead to the control module can't control and the technical problem of protection to this submodule piece. The modular multilevel converter control system comprises: the modularized multi-level converter comprises a plurality of sub-modules, each sub-module is connected with a control module in a direct current transmission system, and two adjacent sub-modules are connected with each other. The utility model provides a many level of modularization transverter control system is applied to the many level of control modularization transverter.
Description
Technical field
The utility model is related to technical field of direct current power transmission, more particularly to a kind of modularization multi-level converter control system
System.
Background technology
With the development of Power Electronic Technique, the DC transmission system based on modularization multi-level converter is quickly sent out
Exhibition.In the DC transmission system based on modularization multi-level converter, due to the son that modularization multi-level converter includes
Number of modules is more, accordingly, it would be desirable to pass through control module be controlled to each submodule in the modularization multi-level converter.
But, in the existing DC transmission system based on modularization multi-level converter, control module is more with modularization
Optical-fibre communications between each submodule of level converter does not have redundant configuration, when a certain submodule of modularization multi-level converter
When optical-fibre communications between block and control module is broken down, the submodule cannot just be communicated between control module, cause control
Molding block cannot be controlled and protect to the submodule, so as to influence the entirely direct current based on modularization multi-level converter defeated
The reliability of electric system.
Utility model content
The purpose of this utility model is to provide a kind of modularization multi-level converter control system, and mould is based on for improving
The reliability of the DC transmission system of block multilevel converter.
To reach above-mentioned purpose, the utility model provides a kind of modularization multi-level converter control system, using as follows
Technical scheme：
The modularization multi-level converter control system includes：Modularization multi-level converter and control module, the mould
Block multilevel converter includes multiple submodule, and each described submodule is connected with the control module, and two neighboring
The submodule is connected with each other.
Compared with prior art, the modularization multi-level converter control system that the utility model is provided has following beneficial
Effect：
In the modularization multi-level converter control system that the utility model is provided, in modularization multi-level converter
Submodule is not only connected with control module, and two neighboring submodule is connected with each other, then when the modularization multi-level converter
In a certain submodule and control module between connection break down when, although control module directly can not be entered with the submodule
During the transmission of row signal, but control module can carry out letter by adjacent with the submodule and connection submodule with the submodule
Number transmission, and then the submodule is controlled, it is defeated so as to improve the direct current based on above-mentioned modularization multi-level converter
The reliability of electric system.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art, below will be to embodiment
The accompanying drawing to be used needed for description is briefly described, it should be apparent that, drawings in the following description are only new this practicality
Some embodiments of type, for those of ordinary skill in the art, on the premise of not paying creative work, can be with root
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of modularization multi-level converter control system provided including the utility model embodiment
Figure；
Fig. 2 shows for the structure of the modularization multi-level converter Neutron module power supply circuit that the utility model embodiment is provided
It is intended to.
Description of reference numerals：
1-modularization multi-level converter, 11-submodule, 2-control module,
21-pole control system, 22-valve control system, 111-submodule power supply unit,
112-wireless power transmission circuit, 1121-two-way changing circuit, 1122-coil,
3-control loop, 4-draw-out power supply, 41-main power source,
42-accessory power supply.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is a part of embodiment of the utility model, rather than whole implementation
Example.Based on the embodiment in the utility model, those of ordinary skill in the art are obtained under the premise of creative work is not made
The every other embodiment for obtaining, belongs to the scope of the utility model protection.
Embodiment one
The utility model embodiment provides a kind of modularization multi-level converter control system, specifically, as shown in figure 1,
The modularization multi-level converter control system includes：Modularization multi-level converter 1 and control module 2, modular multilevel
Transverter 1 includes multiple submodule 11, and each submodule 11 is connected with control module 2, and two neighboring submodule 11 is mutual
Connection, exemplarily, two neighboring submodule 11 can be connected with each other by two one-way communication optical fiber.
It should be noted that in the modularization multi-level converter control system of the utility model embodiment offer, it is not right
The topological structure of the submodule 11 in modularization multi-level converter 1 is improved, in above-mentioned modularization multi-level converter 1
The topological structure of submodule 11 can be existing half-bridge structure, full bridge structure or clamp structure etc., and the utility model is implemented
Example is not defined.
In above-mentioned modularization multi-level converter control system, when the Neutron module 11 of modularization multi-level converter 1 with
When connection between control module 2 is normal, control module 2 can directly carry out the transmission of signal by optical fiber with submodule 11, right
Submodule 11 is controlled and protects；When between a certain submodule 11 and control module 2 in modularization multi-level converter
When connection is broken down, control module 2 then can not directly carry out the transmission of signal with the submodule 11, and now, control module 2 can
By adjacent with the submodule 11 and connection submodule 11, and the transmission that the submodule 11 carries out signal, and then to the submodule
Block 11 is controlled.
In the technical scheme of the present embodiment, submodule 11 in modularization multi-level converter 1 not only with direct current transportation
Control module 2 in system is connected, and two neighboring submodule 11 is connected with each other, then when the modularization multi-level converter 1
In a certain submodule 11 and control module 2 between connection break down when, although control module 2 can not directly with the submodule
When block 11 carries out the transmission of signal, but control module 2 can be by adjacent with the submodule 11 and connection submodule 11, with the son
Module 11 carries out the transmission of signal, and then the submodule 11 is controlled, so as to improve based on above-mentioned modular multilevel
The reliability of the DC transmission system of transverter 1.
Exemplarily, as shown in figure 1, each submodule 11 can respectively pass through downlink optical fiber and uplink optical fibers and control module
2 are connected, naturally it is also possible to the connection of submodule 11 and control module 2 is realized using other similar connected modes.
Specifically, when the connection in modularization multi-level converter between 1 a certain submodule 11 and control module 2 occurs
During failure, control module 2 can not directly carry out the transmission of signal with the submodule 11, now, on the one hand, with control module 2 it
Between connection break down submodule 11, signal can be transmitted to connected adjacent submodule 11 by one-way optical fiber,
Adjacent submodule 11 can transmit a signal to control module 2 by uplink optical fibers；On the other hand, control module 2 obtains signal
Afterwards, the signal of the submodule 11 can will be controlled to be transmitted to connected adjacent submodule 11 by downlink optical fiber again, it is adjacent
Submodule 11 will control the signal transmission of the submodule 11 to the submodule by another one-way optical fiber, and then to the submodule
Block 11 is controlled.
Alternatively, as shown in figure 1, above-mentioned control module 2 includes the pole control system 21 and valve control system 22 that are connected with each other, often
Individual submodule 11 is connected with valve control system 22.
Exemplarily, pole control system 21 and valve control system 22 can respectively by signal optical fibre on duty, uplink optical fibers and descending
Optical fiber is connected with each other.
Additionally, as shown in Fig. 2 each submodule 11 may each comprise submodule power supply unit 111, and for making adjacent son
The wireless power transmission circuit 112 of the mutually power supply of module 11, is provided with control system for being the control loop 3 in control system
The draw-out power supply 4 of power supply, submodule power supply unit 111 and wireless power transmission circuit 112 are connected with draw-out power supply 4 respectively.
It should be noted that in the DC transmission system that provides of the utility model embodiment, including multiple independent take energy
Power supply 4 and multiple independent control loops 3, each submodule 11 stands alone as a draw-out power supply 4 and a control loop 3 is supplied
Electricity.
In above-mentioned modularization multi-level converter control system, when the Neutron module power supply unit 111 of any submodule 11
During failure, the submodule 11 can then be obtained and the son by the wireless power transmission circuit 112 set in the submodule 11
Module it is adjacent and connection submodule 11 electric energy, powered to the draw-out power supply 4 being connected with the submodule 11, make draw-out power supply 4
For control loop 3 is powered.
Alternatively, as shown in Fig. 2 wireless power transmission circuit 112 includes the He of two-way changing circuit 1121 being connected with each other
Coil 1122, two-way changing circuit 1121 is connected with draw-out power supply 4.
Exemplarily, as shown in Fig. 2 draw-out power supply 4 includes main power source 41 and accessory power supply 42, submodule power supply unit
111 are connected with main power source 41 and accessory power supply 42 respectively, and wireless power transmission circuit 112 is connected with accessory power supply 42.
Specifically, when the submodule power supply unit 111 in submodule 11 and 41 equal normal work of main power source, main power source 41
Energy is taken from a high position at submodule power supply unit 111 by the electric capacity in submodule power supply unit 111, is that control loop 3 is powered, this
When accessory power supply 42 do not work；The normal work of group module for power supply unit 111, when main power source 41 breaks down, accessory power supply 42
Energy can be taken from a high position at submodule power supply unit 111 by the electric capacity in submodule power supply unit 111, be that control loop 3 is powered；
When the submodule power supply unit 111 in the submodule 11 breaks down, then accessory power supply 42 can be by coupled nothing
Line electric energy transmission circuit 112 and coil 1122 receive the electric energy that the submodule 11 adjacent with the submodule 11 is provided, with its phase
Accessory power supply 42 in adjacent submodule 11 takes energy from a high position at the submodule power supply unit 111 in the submodule 11, and passes through
Wireless power transmission circuit 112 and coil 1122 in the submodule 11 transmit electric energy to the submodule 11 of the failure.
Embodiment two
The utility model embodiment provides a kind of modularization multi-level converter control method, is implemented using the utility model
The modularization multi-level converter control system provided in example one is controlled to modularization multi-level converter, specifically, should
The control method of modularization multi-level converter includes：Any submodule is connected with control module in modularization multi-level converter
During failure, submodule is communication failure submodule；Control module passes through the adjacent submodule of connecting communication failure submodule and leads to
The submodule communication of news failure.
Exemplarily, as shown in figure 1, when a certain submodule 11 in modularization multi-level converter and control module 2 it
Between connection break down when, control module 2 then can not directly carry out the transmission of signal with the submodule 11, now, control mould
Block 2 can be by adjacent with the submodule 11 and connection submodule 11, and the transmission that the submodule 11 carries out signal, and then to this
Submodule 11 is controlled.
In the technical scheme of the present embodiment, when a certain submodule in modularization multi-level converter and control module it
Between connection break down when, although control module directly can not carry out the transmission of signal with the communication failure submodule,
Control module can be communicated by connecting the submodule of the communication failure submodule with the communication failure submodule, and then to the communication
Failure submodule is controlled, so as to improve the reliability of the DC transmission system based on the modularization multi-level converter.
Additionally, above-mentioned modularization multi-level converter control method also includes：
When any submodule Neutron module power supply unit breaks down, submodule is power supply trouble submodule, power supply trouble
Submodule obtains the submodule adjacent with power supply trouble submodule by the wireless power transmission circuit in power supply trouble submodule
Electric energy, powered to the draw-out power supply being connected with power supply trouble submodule, draw-out power supply is powered for control loop.
Exemplarily, as shown in Fig. 2 when the submodule power supply unit 111 in submodule 11 breaks down, then aiding in electricity
Source 42 can receive the son adjacent with the submodule 11 by coupled wireless power transmission circuit 112 and coil 1122
The electric energy that module 11 is provided, accessory power supply 42 in submodule 11 adjacent thereto is powered list from the submodule in the submodule 11
Unit 111 at a high position take can, and by the wireless power transmission circuit 112 and coil 1122 in the submodule 11 by electric energy transmit to
The submodule 11 of the failure.
The above, specific embodiment only of the present utility model, but protection domain of the present utility model do not limit to
In this, any one skilled in the art can readily occur in change in the technical scope that the utility model is disclosed
Or replace, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with the power
The protection domain that profit is required is defined.
Claims (7)
1. a kind of modularization multi-level converter control system, it is characterised in that including：Modularization multi-level converter and control
Module, the modularization multi-level converter includes multiple submodule, and each described submodule is connected with the control module,
And the two neighboring submodule is connected with each other.
2. modularization multi-level converter control system according to claim 1, it is characterised in that each described submodule
Include submodule power supply unit, and the wireless power transmission circuit for making the adjacent submodule mutually power, it is described
The draw-out power supply for being powered for the control loop in the control system, the submodule power supply unit are provided with control system
It is connected with the draw-out power supply respectively with the wireless power transmission circuit.
3. modularization multi-level converter control system according to claim 2, it is characterised in that the radio energy is passed
Transmission of electricity road includes the two-way changing circuit and coil that are connected with each other, and the two-way changing circuit is connected with the draw-out power supply.
4. the modularization multi-level converter control system according to Claims 2 or 3, it is characterised in that described taking can electricity
Source includes main power source and accessory power supply；
The submodule power supply unit is connected with the main power source and the accessory power supply respectively, the wireless power transmission electricity
Road is connected with the accessory power supply.
5. modularization multi-level converter control system according to claim 1, it is characterised in that each described submodule
It is connected with the control module by downlink optical fiber and uplink optical fibers respectively.
6. modularization multi-level converter control system according to claim 1 or 5, it is characterised in that the control mould
Block includes the pole control system and valve control system that are connected with each other, and each described submodule is connected with the valve control system.
7. modularization multi-level converter control system according to claim 6, it is characterised in that the pole control system and
Valve control system is connected with each other by signal optical fibre on duty, uplink optical fibers and downlink optical fiber respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621272678.6U CN206211872U (en) | 2016-11-24 | 2016-11-24 | Modular multilevel converter control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621272678.6U CN206211872U (en) | 2016-11-24 | 2016-11-24 | Modular multilevel converter control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206211872U true CN206211872U (en) | 2017-05-31 |
Family
ID=58747349
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621272678.6U Expired - Fee Related CN206211872U (en) | 2016-11-24 | 2016-11-24 | Modular multilevel converter control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206211872U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655846A (en) * | 2016-11-24 | 2017-05-10 | 南方电网科学研究院有限责任公司 | Modular multilevel converter control system and control method |
| CN110932773A (en) * | 2019-12-20 | 2020-03-27 | 西安西电电力系统有限公司 | Data transmission control method in modular multilevel converter and related device |
-
2016
- 2016-11-24 CN CN201621272678.6U patent/CN206211872U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655846A (en) * | 2016-11-24 | 2017-05-10 | 南方电网科学研究院有限责任公司 | Modular multilevel converter control system and control method |
| CN106655846B (en) * | 2016-11-24 | 2023-11-17 | 南方电网科学研究院有限责任公司 | Modularized multi-level converter control system and control method |
| CN110932773A (en) * | 2019-12-20 | 2020-03-27 | 西安西电电力系统有限公司 | Data transmission control method in modular multilevel converter and related device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210611 Address after: 510700 3rd, 4th and 5th floors of building J1 and 3rd floor of building J3, No.11 Kexiang Road, Science City, Luogang District, Guangzhou City, Guangdong Province Patentee after: China South Power Grid International Co.,Ltd. Address before: 510080 West Tower 13-20 Floor, Shui Jungang 6 and 8 Dongfeng East Road, Yuexiu District, Guangzhou City, Guangdong Province Patentee before: China South Power Grid International Co.,Ltd. Patentee before: POWER GRID TECHNOLOGY RESEARCH CENTER. CHINA SOUTHERN POWER GRID |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170531 |