CN106505897A - A kind of low-loss MMC submodules topology for possessing DC Line Fault ride-through capability - Google Patents
A kind of low-loss MMC submodules topology for possessing DC Line Fault ride-through capability Download PDFInfo
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- CN106505897A CN106505897A CN201611243314.XA CN201611243314A CN106505897A CN 106505897 A CN106505897 A CN 106505897A CN 201611243314 A CN201611243314 A CN 201611243314A CN 106505897 A CN106505897 A CN 106505897A
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- submodule
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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
- 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
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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
- H02H7/10—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 for converters; for rectifiers
- H02H7/12—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 for converters; for rectifiers for static converters or rectifiers
- H02H7/122—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 for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
The present invention provides a kind of low-loss MMC submodules topology for possessing DC Line Fault ride-through capability, it is made up of five switching tubes, two capacitors, a diode and corresponding wires, switching tube used by submodule is the power electronic devices for possessing self-switching-off capability, contains an anti-paralleled diode inside switching tube；The present invention is applied in modular multi-electrical-level voltage source current converter, Scavenging activity when DC side breaks down, with direct fault current.
Description
Technical field
The present invention relates to flexible direct-current transmission field, and in particular to a kind of low-loss for possessing DC Line Fault ride-through capability
MMC submodules topology.
Background technology
Modularization multi-level converter MMC is the developing direction of following HVDC Transmission Technology, and MMC is using submodule (Sub-
Module, SM) mode that cascades constructs converter valve, it is to avoid the direct series connection of big metering device, reduce conforming to device
Require, simultaneously facilitate dilatation and redundant configuration.With the rising of level number, output waveform is close to sine, can effectively make up low electricity
The defect of flat VSC-HVDC.
Dc-side short-circuit fault is one of subject matter that current MMC is faced.Half-bridge submodule is adopted in Practical Project
Block, when DC side breaks down, as anti-paralleled diode remains to provide path for fault current, there is three-phase in system approximation
Short circuit, and cannot be by locking transverter come disengagement failure electric current, the safe and stable operation of serious harm system.Simultaneously as
There is no zero crossing in DC current, blow-out is difficult, and the manufacturing process of high-voltage large-capacity dc circuit breaker is still immature, still locates at present
In the experimental stage, not yet large-scale application in engineering.Therefore, remove DC side failure and can only rely on and disconnect AC circuit breaker
Realize, but the method responsiveness is slow, system recovery time is long.
It is a kind of effective side using the submodule topology with DC Line Fault ride-through capability come disengagement failure electric current
The switching tube consumption of the bridge-type MMC submodules topology that commonly uses in method, but current engineering is more, relatively costly, and larger, institute is lost
Have great importance to study the low-loss MMC topologys for possessing DC Line Fault ride-through capability.
Content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the invention provides a kind of low damage for possessing DC Line Fault ride-through capability
Consumption MMC topologys.
Specific constituted mode of the invention is as follows.
A kind of possess DC Line Fault ride-through capability low-loss MMC submodules topology, each submodule by five switching tubes,
Two capacitors, a diode and corresponding wire composition, switching tube used by submodule is the electric power for possessing self-switching-off capability
Electronic device, internal containing an anti-paralleled diode.
The above-mentioned low-loss MMC submodules topology for possessing DC Line Fault ride-through capability, each phase all include by the submodule
The bottom of the upper and lower bridge arm of composition, the top of upper bridge arm and lower bridge arm is connected with direct current positive and negative electrode bus respectively, the bottom of upper bridge arm
The top of end and lower bridge arm is all connected to ac bus through a bridge arm reactor.
Description of the drawings
Fig. 1 is a kind of low-loss MMC submodules topology for possessing DC Line Fault ride-through capability.
Fig. 2 is a kind of electric current of low-loss MMC submodules topology for possessing DC Line Fault ride-through capability in DC Line Fault
Path.
Fig. 3 is a kind of electric current of low-loss MMC submodules topology for possessing DC Line Fault ride-through capability in DC Line Fault
Path.
Specific embodiment
Accompanying drawing in below in conjunction with the embodiment of the present application, to the embodiment of the present application in technical scheme carry out clear, complete
Site preparation is described.
Fig. 1 is a kind of low-loss MMC submodules topology for possessing DC Line Fault ride-through capability proposed by the present invention.Wherein open
Close pipe T4 identical with the triggering logic of T5, i.e., turned in normal condition together and turned off together, locking simultaneously under failure.Diode
D5 is in reverse blocking state due to the effect of electric capacity both end voltage, is equivalent to open a way.By the control of switch tube, the son
The voltage of exportable 0,1, the 2 sub- module capacitances of module.
Fig. 2 is and fault current path during all switching tube lockings in the case where DC side is short-circuited failure, this
When fault current direction for forward direction, be equivalent to give submodule electric capacity C1And C2Charge, when capacitance voltage sum exceedes alternating voltage
During amplitude, the diode in path will bear backward voltage and end, and reach the effect of fault current removing.
Fig. 3 is and fault current path during all switching tube lockings in the case where DC side is short-circuited failure, this
When fault current direction be reverse, be equivalent to give submodule electric capacity C1Charge, when capacitance voltage sum exceedes the width of alternating voltage
During value, the diode in path will bear backward voltage and end, and reach the effect of fault current removing.
Finally it should be noted that：Described embodiment is only some embodiments of the present application, rather than whole realities
Apply example.Embodiment in based on the application, those of ordinary skill in the art are obtained under the premise of creative work is not made
Every other embodiment, belong to the application protection scope.
Claims (3)
1. a kind of low-loss MMC submodules topology for possessing DC Line Fault ride-through capability, it is characterised in that each submodule is by five
Individual switching tube, two capacitors, a diode and corresponding wire composition, switching tube used by submodule are possess automatic shutoff energy
The power electronic devices of power, internal containing an anti-paralleled diode, by the control of switch tube, can independent control submodule
The input of two interior capacitors and excision, switching tube is all-controlling power electronics device, such as IGBT, IGCT etc..
2. a kind of low-loss MMC submodules for possessing DC Line Fault ride-through capability according to claim 1 are topological, its feature
It is, the topology is applied in direct current transportation occasion, when DC side occurs one pole ground short circuit failure, along with submodule institute
There is the locking of switching tube, the electric capacity in submodule will be electrically charged, these capacitance voltage sums are exceeded rapidly alternating voltage
Amplitude, so as to realize the reverse cut-off of diode, reaches the effect of fault current removing.
3. a kind of low-loss MMC submodules for possessing DC Line Fault ride-through capability according to claim 1 are topological, its feature
It is, the topology is applied in direct current transportation occasion, when DC side occurs bipolar short trouble, opens along with submodule is all
The locking of pipe is closed, the electric capacity in submodule will be electrically charged, these capacitance voltage sums are exceeded rapidly the amplitude of alternating voltage,
So as to realize the reverse cut-off of diode, the effect of fault current removing is reached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611243314.XA CN106505897A (en) | 2016-12-29 | 2016-12-29 | A kind of low-loss MMC submodules topology for possessing DC Line Fault ride-through capability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611243314.XA CN106505897A (en) | 2016-12-29 | 2016-12-29 | A kind of low-loss MMC submodules topology for possessing DC Line Fault ride-through capability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106505897A true CN106505897A (en) | 2017-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611243314.XA Pending CN106505897A (en) | 2016-12-29 | 2016-12-29 | A kind of low-loss MMC submodules topology for possessing DC Line Fault ride-through capability |
Country Status (1)
| Country | Link |
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| CN (1) | CN106505897A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109861512A (en) * | 2019-03-08 | 2019-06-07 | 西安交通大学 | A kind of clamper Shuangzi module with DC Line Fault self-cleaning ability |
| CN110429843A (en) * | 2019-07-30 | 2019-11-08 | 西安交通大学 | A kind of MMC Shuangzi module topology with DC side failure self-cleaning ability |
| CN110890742A (en) * | 2019-11-25 | 2020-03-17 | 上海交通大学 | Direct-current side fault ride-through method of low-loss modular multilevel direct-current transformer |
| CN110943636A (en) * | 2019-11-25 | 2020-03-31 | 国网山东省电力公司潍坊供电公司 | Multi-level module for clearing direct current short-circuit current |
| CN116722760A (en) * | 2023-08-10 | 2023-09-08 | 华北电力大学（保定） | Bridge arm topological structure for blocking-free fault ride through and control method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904926A (en) * | 2014-03-17 | 2014-07-02 | 华北电力大学 | Improved modular multilevel transverter submodule topology |
| CN203968008U (en) * | 2014-05-30 | 2014-11-26 | 荣信电力电子股份有限公司 | A kind of modular multilevel converter valve for flexible DC power transmission system |
-
2016
- 2016-12-29 CN CN201611243314.XA patent/CN106505897A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904926A (en) * | 2014-03-17 | 2014-07-02 | 华北电力大学 | Improved modular multilevel transverter submodule topology |
| CN203968008U (en) * | 2014-05-30 | 2014-11-26 | 荣信电力电子股份有限公司 | A kind of modular multilevel converter valve for flexible DC power transmission system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109861512A (en) * | 2019-03-08 | 2019-06-07 | 西安交通大学 | A kind of clamper Shuangzi module with DC Line Fault self-cleaning ability |
| CN110429843A (en) * | 2019-07-30 | 2019-11-08 | 西安交通大学 | A kind of MMC Shuangzi module topology with DC side failure self-cleaning ability |
| CN110890742A (en) * | 2019-11-25 | 2020-03-17 | 上海交通大学 | Direct-current side fault ride-through method of low-loss modular multilevel direct-current transformer |
| CN110943636A (en) * | 2019-11-25 | 2020-03-31 | 国网山东省电力公司潍坊供电公司 | Multi-level module for clearing direct current short-circuit current |
| CN110890742B (en) * | 2019-11-25 | 2020-11-20 | 上海交通大学 | Direct-current side fault ride-through method of low-loss modular multilevel direct-current transformer |
| CN110943636B (en) * | 2019-11-25 | 2023-04-28 | 国网山东省电力公司潍坊供电公司 | Multi-level module for eliminating direct current short-circuit current |
| CN116722760A (en) * | 2023-08-10 | 2023-09-08 | 华北电力大学（保定） | Bridge arm topological structure for blocking-free fault ride through and control method thereof |
| CN116722760B (en) * | 2023-08-10 | 2023-10-24 | 华北电力大学（保定） | Bridge arm topological structure for blocking-free fault ride through and control method thereof |
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Application publication date: 20170315 |
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