CN106655846A - Modular multi-level converter control system and control method - Google Patents
Modular multi-level converter control system and control method Download PDFInfo
- Publication number
- CN106655846A CN106655846A CN201611051390.0A CN201611051390A CN106655846A CN 106655846 A CN106655846 A CN 106655846A CN 201611051390 A CN201611051390 A CN 201611051390A CN 106655846 A CN106655846 A CN 106655846A
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- Prior art keywords
- submodule
- level converter
- power supply
- control system
- modularization multi
- Prior art date
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Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 34
- 239000013307 optical fiber Substances 0.000 claims abstract description 19
- 238000004891 communication Methods 0.000 claims abstract description 18
- 230000005611 electricity Effects 0.000 claims description 5
- 230000008054 signal transmission Effects 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/483—Converters with outputs that each can have more than two voltages levels
-
- 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
Abstract
The invention discloses a modular multi-level converter control system and control method and belongs to direct current transmission technical field. According to an existing modular multi-level converter-based direct-current transmission system, when optical fiber communication between a certain sub-module of a modular multi-level converter and a control module fails, the sub-module cannot communicate with the control module, and as a result, the control module cannot control the sub-module, and the invention aims to solve the problem. The modular multi-level converter control system includes a modular multi-level converter and a control module; the modular multi-level converter comprises a plurality of sub-modules; each of the sub-modules is connected with a control module in a direct-current power transmission system; and two adjacent sub-modules are connected with each other. The modular multi-level converter control system of the present invention is applied to controlling a modular multi-level converter.
Description
Technical field
The present invention relates to technical field of direct current power transmission, more particularly to a kind of modularization multi-level converter control system and control
Method processed.
Background technology
With the development of Power Electronic Technique, quickly sent out based on the DC transmission system of modularization multi-level converter
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 modularity
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 just cannot be communicated between control module, cause control
Molding block cannot be controlled to the submodule, so as to affect DC transmission system entirely based on modularization multi-level converter
Reliability.
The content of the invention
It is an object of the invention to provide a kind of modularization multi-level converter control system and control method, for improving
Reliability based on the DC transmission system of modularization multi-level converter.
To reach above-mentioned purpose, the present invention provides a kind of modularization multi-level converter control system, using following technology
Scheme：
The modularization multi-level converter control system includes：Modularization multi-level converter and control module, the mould
Massing 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 present invention is provided has following beneficial effect
Really：
In the modularization multi-level converter control system that the present invention is provided, the submodule in modularization multi-level converter
Block is not only connected with control module, and two neighboring submodule is connected with each other, then when in the modularization multi-level converter
When connection between a certain submodule and control module is broken down, although control module directly can not carry out letter with the submodule
Number transmission when, but control module can by it is adjacent with the submodule and connect submodule, carry out signal with the submodule
Transmission, and then the submodule is controlled, so as to improve the DC power transmission system based on above-mentioned modularization multi-level converter
The reliability of system.
The embodiment of the present invention also provides a kind of modularization multi-level converter control method, adopts the following technical scheme that：
The modularization multi-level converter control method is using above-mentioned modularization multi-level converter control system to described
Modularization multi-level converter is controlled, and the modularization multi-level converter control method includes：
When arbitrary submodule is with the control module connecting fault in the modularization multi-level converter, the submodule
For communication failure submodule；Adjacent submodule and the communication of the control module by the connection communication failure submodule
Failure submodule is communicated.
Compared with prior art, the present invention provide modularization multi-level converter control method beneficial effect with it is above-mentioned
The beneficial effect of modularization multi-level converter control system is identical, therefore is no longer repeated herein.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, embodiment will be described below
Needed for the accompanying drawing to be used be briefly described, it should be apparent that, drawings in the following description be only the present invention some
Embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can be with attached according to these
Figure obtains other accompanying drawings.
Fig. 1 is the structural representation for including modularization multi-level converter control system provided in an embodiment of the present invention；
Fig. 2 is the structural representation of modularization multi-level converter Neutron module power supply circuits provided in an embodiment of the present invention
Figure.
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 embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is a part of embodiment of the invention, rather than the embodiment of whole.Based on this
Embodiment in bright, the every other enforcement that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to the scope of protection of the invention.
Embodiment one
The embodiment of the present invention provides a kind of modularization multi-level converter control system, specifically, as shown in figure 1, the mould
Massing multilevel converter control system includes：Modularization multi-level converter 1 and control module 2, the modular multilevel change of current
Device includes multiple submodule 11, and each submodule 11 is connected with control module 2, and two neighboring submodule 11 is connected with each other,
Exemplarily, two neighboring submodule 11 can be connected with each other by two one-way communication optical fiber.
It should be noted that in modularization multi-level converter control system provided in an embodiment of the present invention, not to module
The topological structure for changing the submodule 11 in multilevel converter 1 is improved, the submodule in above-mentioned modularization multi-level converter 1
The topological structure of block 11 can be existing half-bridge structure, full bridge structure or clamp structure etc., and the embodiment of the present invention is not carried out
Limit.
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 pass through optical fiber directly carries out the transmission of signal 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 directly can not carry out the transmission of signal with the submodule 11, and now, control module 2 can
By submodule 11 that is adjacent with the submodule 11 and connecting, 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, the submodule 11 in modularization multi-level converter 1 not only with control module 2
Be connected, and two neighboring submodule 11 is connected with each other, then when a certain submodule 11 in the modularization multi-level converter 1 with
When connection between control module 2 is broken down, although control module 2 directly can not carry out the transmission of signal with the submodule 11
When, but control module 2 can be by submodule 11 that is adjacent with the submodule 11 and connecting, with the biography that the submodule 11 carries out signal
Pass, and then the submodule 11 is controlled, so as to improve the DC power transmission system based on above-mentioned modularization multi-level converter 1
The reliability of system.
Exemplarily, as shown in figure 1, each submodule 11 can respectively by downlink optical fiber and uplink optical fibers and control module
2 are connected, naturally it is also possible to realize the connection of submodule 11 and control module 2 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 directly can not carry out the transmission of signal with the submodule 11, now, on the one hand, with control module 2 it
Between the submodule 11 that breaks down of connection, 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 for controlling the submodule 11 can 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 pole control system 21 and the valve control system 22 being 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 for for the control loop 3 in control system 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 respectively with draw-out power supply 4.
It should be noted that in control system provided in an embodiment of the present invention, including multiple independent draw-out power supplies 4 and many
Individual independent control loop 3, each submodule 11 stands alone as a draw-out power supply 4 and a control loop 3 is powered.
In above-mentioned modularization multi-level converter control system, when the Neutron module power supply unit 111 of arbitrary submodule 11
When breaking down, the wireless power transmission circuit 112 that the submodule 11 then can pass through to be arranged in the submodule 11 is obtained and the son
Module it is adjacent and connect submodule 11 electric energy, power to the draw-out power supply 4 being connected with the submodule 11, make draw-out power supply 4
Power for control loop 3.
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 respectively with main power source 41 and accessory power supply 42, 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
A high position takes energy at submodule power supply unit 111 of the accessory power supply 42 in adjacent submodule 11 from the submodule 11, and passes through
Electric energy is transmitted wireless power transmission circuit 112 and coil 1122 in the submodule 11 submodule 11 broken down to this.
Embodiment two
The embodiment of the present invention provides a kind of modularization multi-level converter control method, using carrying in the embodiment of the present invention one
For modularization multi-level converter control system modularization multi-level converter is controlled, specifically, the modularity is more
The control method of level converter includes：When arbitrary submodule is with control module connecting fault in modularization multi-level converter,
Submodule is communication failure submodule；Control module is by the adjacent submodule of connecting communication failure submodule and communication failure
Module communication.
Exemplarily, as shown in figure 1, when a certain submodule 11 in modularization multi-level converter and control module 2 it
Between connection when breaking down, control module 2 then directly can not carry out the transmission of signal with the submodule 11, now, control mould
Block 2 can be by submodule 11 that is adjacent with the submodule 11 and connecting, 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 when breaking down, although control module directly can not carry out the transmission of signal with the communication failure submodule,
Control module can pass through submodule and the communication failure submodule communication for connecting the communication failure submodule, and then to the communication
Failure submodule is controlled, so as to improve the reliability based on the DC transmission system of the modularization multi-level converter.
Additionally, above-mentioned modularization multi-level converter control method also includes：
When arbitrary submodule Neutron module power supply unit breaks down, submodule be 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, power to the draw-out power supply being connected with power supply trouble submodule, make draw-out power supply power 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, submodule of the accessory power supply 42 in the submodule 11 being adjacent from the submodule 11 is powered list
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 that this breaks down.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, all should contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be defined by the scope of the claims.
Claims (9)
1. a kind of modularization multi-level converter control system, it is characterised in that include：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 powering 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 two-way changing circuit and the coil being 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 respectively with the main power source and the accessory power supply, 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 pole control system and the valve control system being 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 respectively by signal optical fibre on duty, uplink optical fibers and downlink optical fiber.
8. a kind of modularization multi-level converter control method, it is characterised in that many using modularity as claimed in claim 1
Level converter control system is controlled to the modularization multi-level converter, the modularization multi-level converter control
Method includes：
When arbitrary submodule is with the control module connecting fault in the modularization multi-level converter, the submodule is logical
News failure submodule；Adjacent submodule and the communication failure that the control module passes through the connection communication failure submodule
Submodule is communicated.
9. modularization multi-level converter control method according to claim 8, 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 powering 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, the modularization multi-level converter control method is also
Including：
When arbitrary submodule Neutron module power supply unit breaks down, the submodule is power supply trouble submodule, described
Power supply trouble submodule is obtained and power supply trouble by the wireless power transmission circuit in the power supply trouble submodule
The electric energy of the adjacent submodule of module, powers to the draw-out power supply being connected with the power supply trouble submodule, makes described the taking can electricity
Source powers for the control loop.
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| CN201611051390.0A CN106655846B (en) | 2016-11-24 | 2016-11-24 | Modularized multi-level converter control system and control method |
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| CN201611051390.0A CN106655846B (en) | 2016-11-24 | 2016-11-24 | Modularized multi-level converter control system and control method |
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| CN106655846B CN106655846B (en) | 2023-11-17 |
Family
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Cited By (10)
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| CN108631436A (en) * | 2018-02-07 | 2018-10-09 | 许继电气股份有限公司 | A kind of multiple redundancy control system suitable for direct current transportation |
| CN110725987A (en) * | 2019-09-17 | 2020-01-24 | 国家电网有限公司 | Converter valve system |
| CN110932568A (en) * | 2019-11-19 | 2020-03-27 | 广东安朴电力技术有限公司 | Communication structure and communication method of control module and submodule based on MMC |
| CN111030427A (en) * | 2019-12-26 | 2020-04-17 | 荣信汇科电气技术有限责任公司 | High-reliability power unit module of modular multi-level converter valve |
| CN111371663A (en) * | 2020-03-03 | 2020-07-03 | 南京南瑞继保电气有限公司 | Ring network communication system and communication method for multi-level converter control system |
| CN111726161A (en) * | 2019-03-21 | 2020-09-29 | 南京南瑞继保工程技术有限公司 | Online detection method for optical fiber link of modular multilevel converter control system |
| CN111813608A (en) * | 2020-06-04 | 2020-10-23 | 国家电网有限公司 | Submodule interface unit, redundancy system and redundancy control method |
| CN112543052A (en) * | 2019-09-20 | 2021-03-23 | 南京南瑞继保工程技术有限公司 | Redundant communication topology of distributed equipment |
| CN113497724A (en) * | 2020-03-20 | 2021-10-12 | 南京南瑞继保电气有限公司 | Communication system and communication method of modular multilevel converter |
| WO2022061927A1 (en) * | 2020-09-28 | 2022-03-31 | 西门子股份公司 | Submodule of modular multilevel converter, and control system, method and apparatus for modular multilevel converter |
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| CN111726161A (en) * | 2019-03-21 | 2020-09-29 | 南京南瑞继保工程技术有限公司 | Online detection method for optical fiber link of modular multilevel converter control system |
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| CN111371663A (en) * | 2020-03-03 | 2020-07-03 | 南京南瑞继保电气有限公司 | Ring network communication system and communication method for multi-level converter control system |
| CN113497724A (en) * | 2020-03-20 | 2021-10-12 | 南京南瑞继保电气有限公司 | Communication system and communication method of modular multilevel converter |
| CN113497724B (en) * | 2020-03-20 | 2024-02-06 | 南京南瑞继保电气有限公司 | Communication system and communication method of modularized multi-level converter |
| CN111813608A (en) * | 2020-06-04 | 2020-10-23 | 国家电网有限公司 | Submodule interface unit, redundancy system and redundancy control method |
| CN111813608B (en) * | 2020-06-04 | 2024-02-09 | 国家电网有限公司 | Sub-module interface unit, redundancy system and redundancy control method |
| WO2022061927A1 (en) * | 2020-09-28 | 2022-03-31 | 西门子股份公司 | Submodule of modular multilevel converter, and control system, method and apparatus for modular multilevel converter |
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