CN206452122U - Bipolar flexible direct current transmission system and converter station thereof - Google Patents
Bipolar flexible direct current transmission system and converter station thereof Download PDFInfo
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- CN206452122U CN206452122U CN201621235873.1U CN201621235873U CN206452122U CN 206452122 U CN206452122 U CN 206452122U CN 201621235873 U CN201621235873 U CN 201621235873U CN 206452122 U CN206452122 U CN 206452122U
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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
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- 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]
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Abstract
The utility model provides a bipolar flexible direct current transmission system and current conversion station thereof relates to the power technology field, can restrain the short-circuit current that produces when bipolar flexible direct current transmission system direct current side breaks down. The converter station for a bipolar flexible direct current transmission system comprises a positive polarity converter part and a negative polarity converter part; the positive polarity current conversion part comprises a first current converter and a first current limiting module; the negative polarity current conversion part comprises a second current converter and a second current limiting module; the first current limiting module comprises a first reactor; one end of the first reactor is connected with the low-voltage end of the first converter, and the other end of the first reactor is connected with a neutral bus; the second current limiting module comprises a second reactor; one end of the second reactor is connected with the low-voltage end of the second converter, and the other end of the second reactor is connected with the neutral bus.
Description
Technical field
The utility model is related to technical field of electric power, more particularly to a kind of bipolar flexible direct current transmission system and its change of current
Stand.
Background technology
Technology of HVDC based Voltage Source Converter is a kind of VSC-HVDC technology, and rational control ＆ protection strategy determines flexible straight
Flow transmission system safe and stable operation.Its flexible Application performance makes it in urban distribution network interconnection, clean energy resource is grid-connected and orphan
The island field such as power has broad application prospects.
In order to realize the requirement of high-capacity power conveying, it is necessary to increase submodule quantity to improve its voltage class, but mistake
Multi-tool block is cascaded, and valve control equipment is controlled difficulty increase, therefore uses dipolar configuration form, is reducing single convertor unit
While module-cascade number, reach that same transimission power turns into a kind of feasible selection.
Dc-side short-circuit fault is one of subject matter that current bipolar flexible HVDC Transmission Technology is faced.When bipolar soft
Property DC transmission system DC side when breaking down, due to its special topological structure, very big short circuit current flow will be produced.Should
Short circuit current flow flows through transverter so that the current stress increase of transverter, or even causes the damage of transverter, while also serious prestige
The safety of relevant device in faulty line is coerced.
Utility model content
Embodiment of the present utility model provides a kind of bipolar flexible direct current transmission system and its current conversion station, can suppress bipolar soft
The short circuit current flow that property DC transmission system DC side is produced when breaking down.
To reach above-mentioned purpose, embodiment of the present utility model is adopted the following technical scheme that：
On the one hand there is provided a kind of current conversion station for bipolar flexible direct current transmission system, including positive polarity change of current part with
Negative polarity change of current part；The positive polarity change of current part includes the first transverter and the first current limliting module；The negative polarity change of current
Part includes the second transverter and the second current limliting module；The first current limliting module includes the first reactor；First reactance
One end of device is connected with the low-pressure end of first transverter, and the other end is connected with neutral bus；The second current limliting module bag
Include the second reactor；One end of second reactor is connected with the low-pressure end of second transverter, the other end with it is described in
Sexupara line is connected.
It is preferred that, the first current limliting module also includes the first arrester；One end of first arrester and described the
The low-pressure end connection of one transverter, other end ground connection.
Based on above-mentioned preferred, the second current limliting module also includes the second arrester；One end of second arrester
It is connected with the low-pressure end of second transverter, other end ground connection.
It is preferred that, first reactor includes at least one first sub- reactor；Wherein, when the first reactor bag
When including multiple first sub- reactors, multiple first sub- reactors are connected and/or are connected in parallel；And/or, second reactor
Including at least one the second sub- reactor；Wherein, when second reactor includes multiple second sub- reactors, multiple second
Sub- reactor is connected and/or is connected in parallel.
It is preferred that, first transverter and second transverter include multiple valve modules；Each valve module is wrapped
Include insulated gate bipolar transistor converter valve.
On the other hand there is provided a kind of bipolar flexible direct current transmission system, including sending end current conversion station and receiving end current conversion station；
The sending end current conversion station and/or the receiving end current conversion station are above-mentioned current conversion station.
It is further preferred that the sending end current conversion station and the receiving end current conversion station are the current conversion station；It is described to send
Electric end current conversion station is that exchange turns DC converter station；The receiving end current conversion station is that direct current delivers stream current conversion station.
It is further preferred that the exchange end of the first transverter and the second transverter is connected with converter power transformer；The power transmission
Hold the first transverter high-pressure side of positive polarity change of current part and positive polarity change of current part in the receiving end current conversion station in current conversion station
The first transverter high-pressure side, the second transverter high-pressure side of negative polarity change of current part and institute in the sending end current conversion station
The the second transverter high-pressure side for stating negative polarity change of current part in receiving end current conversion station passes through bipolarity high-voltage dc transmission electric wire
Connection.
The utility model provides a kind of bipolar flexible direct current transmission system and its current conversion station, by positive polarity change of current part
Middle setting includes the first current limliting module of the first reactor, and being set in negative polarity change of current part includes the second of the second reactor
Current limliting module, when short trouble occurs for the DC side of positive polarity change of current part or negative polarity change of current part, that breaks down changes
The electric current of the reactor of stream part can increase suddenly, and according to the characteristic of reactor, it can produce reverse current to limit electric current
Unexpected increase, thus the short circuit current flow of positive polarity change of current part or negative polarity change of current Partial DC side can be suppressed, it is ensured that change
The security of transverter in stream station and the relevant device on faulty line.On this basis, due to the first current limliting module and
Second current limliting module is independently arranged, and positive polarity change of current part or the negative polarity change of current can be only occurred in the failure of the current conversion station
During the wherein pole of part, it is ensured that significant change does not occur for another pole, i.e. the influence to normal work pole is smaller.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
A kind of topology for current conversion station for bipolar flexible direct current transmission system that Fig. 1 provides for the utility model embodiment
Schematic diagram；
Fig. 2 limits for a kind of current conversion station for bipolar flexible direct current transmission system first that the utility model embodiment is provided
The topological schematic diagram of flow module；
Second in a kind of current conversion station for bipolar flexible direct current transmission system that Fig. 3 provides for the utility model embodiment
The topological schematic diagram of current limliting module；
First in a kind of current conversion station for bipolar flexible direct current transmission system that Fig. 4 provides for the utility model embodiment
With the topological schematic diagram one of the second current limliting module；
First in a kind of current conversion station for bipolar flexible direct current transmission system that Fig. 5 provides for the utility model embodiment
With the topological schematic diagram two of the second current limliting module；
First in a kind of current conversion station for bipolar flexible direct current transmission system that Fig. 6 provides for the utility model embodiment
With the topological schematic diagram three of the second current limliting module；
First in a kind of current conversion station for bipolar flexible direct current transmission system that Fig. 7 provides for the utility model embodiment
With the topological schematic diagram four of the second current limliting module；
A kind of topological schematic diagram for bipolar flexible direct current transmission system that Fig. 8 provides for the utility model embodiment.
Brief description of the drawings：
01- sending end current conversion stations；02- receiving end current conversion stations；100- positive polarity changes of current part；The transverters of 110- first；
111- the first transverter low-pressure ends；112- the first transverter high-pressure sides；120- the first current limliting modules；The reactors of 121- first；
The arresters of 122- first；The sub- reactors of 123- first；200- negative polarity changes of current part；The transverters of 210- second；211- second is changed
Flow device low-pressure end；212- the second transverter high-pressure sides；220- the second current limliting modules；The reactors of 221- second；222- second is kept away
Thunder device；The sub- reactors of 223- second；300- neutral buses；400- commutating reactors；500- converter power transformers.
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 only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
The utility model embodiment provides a kind of current conversion station for bipolar flexible direct current transmission system, as shown in figure 1, bag
Include positive polarity change of current part 100 and negative polarity change of current part 200；Positive polarity change of current part 100 includes the first transverter 110 and the
One current limliting module 120；Negative polarity change of current part 200 includes the second transverter 210 and the second current limliting module 220.
First current limliting module 120 includes the first reactor 121；One end of first reactor 121 and the first transverter low pressure
End 111 is connected, and the other end is connected with neutral bus 300；Second current limliting module 220 includes the second reactor 221；Second reactor
221 one end is connected with the second transverter low-pressure end 211, and the other end is connected with neutral bus 300.
Wherein, the first current limliting module 120 is used for when positive polarity change of current part 100 is broken down, i.e. positive polarity change of current part
During 100 generation dc-side short-circuit, short circuit current flow is reduced；Second current limliting module 220 is used for when event occurs in negative polarity change of current part 200
Barrier, i.e. when dc-side short-circuit occurs for negative polarity change of current part 200, reduces short circuit current flow.
It should be noted that the first, the first transverter 110 and the second transverter 210 can be used for being converted to alternating current directly
Stream electricity, it can also be used to which direct current is converted into alternating current.
No matter the first transverter 110 and the second transverter 210 are used to alternating current being converted to direct current, or by direct current
Alternating current is converted to, the first transverter high-pressure side 112 and the second transverter high-pressure side 212 are all that connection positive high voltage direct current is defeated respectively
Electric wire and negative high voltage DC transmission line.
Second, the specific structure of the first transverter 110 and the inside of the second transverter 210 is not defined, as long as according to
Need, alternating current can be converted to direct current, or direct current is converted into alternating current.
3rd, the specific current conversion station that the design parameter of the first reactor 121 and the second reactor 221 can be applied according to it
Set, as long as ensureing that, when occurring dc-side short-circuit, the component in current conversion station is not destroyed.
The utility model embodiment provides a kind of current conversion station, includes first by being set in positive polarity change of current part 100
First current limliting module 120 of reactor 121, being set in negative polarity change of current part 200 includes the second of the second reactor 221
Current limliting module 220, when short trouble occurs for the DC side of positive polarity change of current part 100 or negative polarity change of current part 200, occurs
The electric current of the reactor of the change of current part of failure can increase suddenly, and according to the characteristic of reactor, it can produce reverse current
The unexpected increase of electric current is limited, thus the short of positive polarity change of current part 100 or the DC side of negative polarity change of current part 200 can be suppressed
Road electric current, it is ensured that the security of the relevant device on transverter and faulty line in current conversion station.On this basis, due to
First current limliting module 120 and the second current limliting module 220 are independently arranged, and can only occur in positive polarity in the failure of the current conversion station
During a 200 wherein pole of change of current part 100 or negative polarity change of current part, it is ensured that significant change does not occur for another pole, i.e. to normal
The influence of work pole is smaller.
In view of when there is short trouble in the DC side of positive polarity change of current part 100, the first transverter high-pressure side 112 with
First transverter low-pressure end 111 is connected, so that cause the voltage spikes of the first transverter low-pressure end 111, in the case, in order to
Avoid device in positive polarity change of current part 100 destroyed, it is necessary to the first transverter low-pressure end 111 insulation against ground level compared with
Height, so as to cause the raising of the cost of the first transverter 110.Based on this, it is preferred that as shown in Fig. 2 the first current limliting module 120 is also
Including the first arrester 122；One end of first arrester 122 is connected with the first transverter low-pressure end 111, other end ground connection.
It should be noted that it will be recognized by those skilled in the art that arrester can reduce the voltage and current in circuit,
Electric equipment is protected from the harm of high transient overvoltage.
In the utility model embodiment, by making the first current limliting module 120 also include the first arrester 122, work as positive polarity
Short trouble occurs for the DC side of change of current part 100, and when the voltage of the first transverter low-pressure end 111 rises to the first arrester
During 122 protection voltage level, the first arrester 122 works, and the portion of electrical current in short-circuit loop is passed through the first arrester 122
The earth is flowed into, so as to reduce the current stress of the first reactor 121, pair of the first transverter low-pressure end 111 can also be improved
Ground dielectric level, and then the requirement of the insulation against ground level to the first transverter low-pressure end 111 can be reduced.
Similarly, it is contemplated that when short trouble occurs in the DC side of negative polarity change of current part 200, the second transverter high-pressure side
212 connect with the second transverter low-pressure end 211, so as to cause the voltage spikes of the second transverter low-pressure end 211, in this situation
Under, in order to avoid the device in negative polarity change of current part 200 is destroyed, it is necessary to the insulation against ground of the second transverter low-pressure end 211
Level is higher, so as to cause the raising of the cost of the second transverter 210.Based on this, it is preferred that as shown in figure 3, the second current limliting mould
Block 220 also includes the second arrester 222；One end of second arrester 222 is connected with the second transverter low-pressure end 211, the other end
Ground connection.
In the utility model embodiment, by making the second current limliting module 220 also include the second arrester 222, work as negative polarity
Short trouble occurs for the DC side of change of current part 200, and when the voltage of the second transverter low-pressure end 211 rises to the second arrester
During 222 protection voltage level, the second arrester 222 works, and the portion of electrical current in short-circuit loop is passed through the second arrester 222
The earth is flowed into, so as to reduce the current stress of the first reactor 121, pair of the second transverter low-pressure end 211 can also be improved
Ground dielectric level, and then the requirement of the insulation against ground level to the second transverter low-pressure end 211 can be reduced.
On the basis of the above, as shown in Figure 4, it is preferred that the first current limliting module 120 also includes the first arrester 122；First
One end of arrester 122 is connected with the first transverter low-pressure end 111, other end ground connection.Second current limliting module 220 also includes second
Arrester 222；One end of second arrester 222 is connected with the second transverter low-pressure end 211, other end ground connection.
Relative dc circuit breaker and its relevant device using bigger connecting-disconnecting function, due to high-tension electricity, the direct current of Large Copacity
Breaker can not be temporarily directly applied in engineering still in the development stage, and its cost of manufacture is high, thus limit its
Practical application in DC engineering；Or, it is relative to use traditional restrictor apparatus, but traditional restrictor apparatus is occurring
Open-circuit line, the trend distribution of influence system and stability are needed after failure；Or it is relative using based on the fast of current-carrying isolator
Fast fault current limiter, does not need open-circuit line, failure terminates rear electric current can continue to circulate from by-pass switch after breaking down,
Do not influence system normally run under trend distribution, but its equipment is complicated, and manufacturing cost is higher.The utility model embodiment by
The first reactor 121 and the first arrester 122 are included up in the first current limliting module 120, the second current limliting module 220 is included up to
Second reactor 221 and the second arrester 222 so that the topology of the current conversion station is free of device for high-power power electronic, cost
Relative moderate, small volume realizes simple and excellent performance, thus is easy to practical application popularization.
Because metal oxide arrester (Metal Oxide Arrester, MOA) has, action response is fast, it is multiple to be resistant to
The advantages of lightning surge or switching overvoltage, energy absorption capability are big, resistance to pollution performance is good, accordingly, it is preferred that first is lightning-arrest
The arrester 222 of device 122 and second is metal oxide arrester.
It is preferred that, the first reactor 121 includes at least one first sub- reactor 123；Wherein, when first reactor
121 include multiple first sub- reactors 123 when, multiple first sub- reactors 123 are connected and/or are connected in parallel；And/or, second
Reactor 221 includes at least one second sub- reactor 223；Wherein, when the second reactor 221 includes the multiple second sub- reactors
When 223, multiple second sub- reactors 223 are connected and/or are connected in parallel.
Two the first sub- reactors 123 are included with the first reactor 121, the second reactor 221 includes two second son electricity
Exemplified by anti-device 223, as shown in figure 5, two the first sub- reactors 123 in the first reactor 121 are connected in parallel, the second reactor
Two the second sub- reactors 223 in 221 are connected in parallel.Or, as shown in fig. 6, two first sons in the first reactor 121
Reactor 123 is connected in series, and two the second sub- reactors 223 in the second reactor 221 are connected in series.
Three the first sub- reactors 123 are included with the first reactor 121, the second reactor 221 includes three second son electricity
Exemplified by anti-device 223, as shown in fig. 7, the sub- reactor 123 of two of which first is connected in parallel in the first reactor 121, and with it is another
Individual first sub- reactor 123 is connected in series, and the sub- reactor 223 of two of which second is connected in parallel in the second reactor 221, and with
Another second sub- reactor 223 is connected in series.
It should be noted that many sub- reactors are set by the way of string and/or parallel connection with a variety of situations, figure
5-7 is that sets forth a kind of situation in three kinds of set-up modes.
The utility model embodiment is gone here and there and/or simultaneously using the multiple first sub- reactors 123 and multiple second sub- reactors 223
The mode limiting short-circuit current that joint group is closed, can reduce the relevant parameter of every sub- reactor, so as to reduce cost.
It is out in view of insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, IGBT)
Logical, shut-off controllable wholly-controled device, control of the IGBT converter valves to transmission system is more flexible, can control reactive power and
Make current conversion station without huge reactive power compensator, and the switching frequency of IGBT converter valves is of a relatively high, makes the defeated of current conversion station
Go out that voltage harmonic amount is smaller, so that the capacity for the filter installed using the current conversion station of IGBT converter valves is greatly reduced.Base
In this, it is preferred that the first transverter 110 and the second transverter 210 include multiple valve modules；Each valve module includes IGBT
Converter valve.
The utility model embodiment also provides a kind of bipolar flexible direct current transmission system, as shown in Fig. 8, including sending end
Current conversion station 01 and receiving end current conversion station 02；Sending end current conversion station 01 and/or receiving end current conversion station 02 are foregoing any embodiment
Current conversion station.
It should be noted that Fig. 8 is foregoing any embodiment with sending end current conversion station 01 and receiving end current conversion station 02
Current conversion station is illustrated.
The utility model embodiment is by the current conversion station in bipolar flexible direct current transmission system in positive polarity change of current part
Being set in 100 includes the first current limliting module 120 of the first reactor 121, and being set in negative polarity change of current part 200 includes second
Second current limliting module 220 of reactor 221, when the DC side of positive polarity change of current part 100 or negative polarity change of current part 200 is sent out
During raw short trouble, the electric current of the reactor for the change of current part broken down can increase suddenly, and according to the characteristic of reactor, its
Reverse current can be produced to limit the unexpected increase of electric current, thus positive polarity change of current part 100 or negative polarity change of current portion can be suppressed
Divide the short circuit current flow of 200 DC sides, it is ensured that the security of the relevant device on transverter and faulty line in current conversion station.
On this basis, can be in the former of the current conversion station because the first current limliting module 120 and the second current limliting module 220 are independently arranged
When barrier only occurs in a 200 wherein pole of positive polarity change of current part 100 or negative polarity change of current part, it is ensured that another pole does not occur
Significant change, i.e. the influence to normal work pole is smaller.
It is preferred that, as shown in figure 8, before sending end current conversion station 01 and receiving end current conversion station 02 are the utility model embodiment
State the current conversion station of any embodiment；Sending end current conversion station 01 is that exchange turns DC converter station；Receiving end current conversion station 02 turns for direct current
Exchange current conversion station.
Wherein, when the current conversion station is sending end current conversion station 01, the first transverter 110 and the second transverter 210 are used for
Alternating current is changed into the direct current that multi-line power transmission ability is strong, loss is small；When the current conversion station is sending end current conversion station 01, first
The transverter 210 of transverter 110 and second be used for will the DC conversion that receive for can large area transmission of electricity alternating current.
The utility model embodiment makes the sending end current conversion station 01 and receiving end current conversion station of the bipolar flexible transmission system
02 includes the first current limliting module 120 and the second current limliting module 220, it is ensured that when the direct current of the bipolar flexible transmission system
When short circuit occurs for side failure, the positive polarity change of current part 100 of sending end current conversion station 01 and receiving end current conversion station 02 and negative pole
Property change of current part 200 circuit in short circuit current flow be suppressed so that the component in protection circuit is not destroyed.
It is further preferred that as shown in figure 8, the exchange end of the first transverter 110 and the second transverter 210 becomes with the change of current
Depressor 500 is connected；First transverter high-pressure side 112 of positive polarity change of current part 100 is changed with receiving end in sending end current conversion station 01
Negative polarity change of current part in first transverter high-pressure side 112 of positive polarity change of current part 100, sending end current conversion station 01 in stream station 02
200 the second transverter high-pressure side 212 and the second transverter high-pressure side of negative polarity change of current part 200 in receiving end current conversion station 02
212 are connected by bipolarity high-voltage dc transmission electric wire.
Wherein, the bipolar flexible direct current transmission system also includes commutating reactor 400, converter power transformer 500 and handed over
Streaming system.
Commutating reactor 400 is connected with the exchange end of the first transverter 110, the second transverter 210, to reduce electric power half
To the influence of AC system waveform during conductor device commutation, and limiting AC side short circuit current flow.
Converter power transformer 500 is connected by commutating reactor 400 with the end that exchanges of the first transverter 110, the second transverter 210
Connect.
It should be noted that the exchange end of the first transverter 110 and the second transverter 210 is connected with converter power transformer 500,
That is the first transverter 110 of sending end current conversion station 01 and receiving end current conversion station 02 and the exchange end of the second transverter 210 is with changing
Convertor transformer 500 is connected.
The utility model embodiment is by by the exchange end of the first transverter 110 and the second transverter 210 and change of current transformation
Device 500 is connected, on the one hand, the connection between AC network and direct current network can be achieved；On the other hand, it is possible to achieve the change of voltage
Change, the AC voltage of the DC voltage of sending end current conversion station 01 or receiving end current conversion station 02 is met its rated voltage and is allowed
Variation.On this basis, sending end current conversion station 01 and receiving end current conversion station are connected by bipolarity high-voltage dc transmission electric wire
02, the power consumption during line transmission ability, reduction line transmission can be improved.
It is described above, 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, it 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 (8)
1. a kind of current conversion station for bipolar flexible direct current transmission system, it is characterised in that including positive polarity change of current part and negative
Polarity change of current part；The positive polarity change of current part includes the first transverter and the first current limliting module；The negative polarity change of current portion
Dividing includes the second transverter and the second current limliting module；
The first current limliting module includes the first reactor；One end of first reactor and the low pressure of first transverter
End connection, the other end is connected with neutral bus；
The second current limliting module includes the second reactor；One end of second reactor and the low pressure of second transverter
End connection, the other end is connected with the neutral bus.
2. current conversion station according to claim 1, it is characterised in that the first current limliting module also includes the first arrester；
One end of first arrester is connected with the low-pressure end of first transverter, other end ground connection.
3. current conversion station according to claim 1 or 2, it is characterised in that the second current limliting module also includes second and taken shelter from the thunder
Device；One end of second arrester is connected with the low-pressure end of second transverter, other end ground connection.
4. current conversion station according to claim 1, it is characterised in that first reactor includes at least one first son electricity
Anti- device；Wherein, when first reactor includes multiple first sub- reactors, multiple first sub- reactors series connection and/or simultaneously
Connection connection；And/or,
Second reactor includes at least one second sub- reactor；Wherein, when second reactor includes multiple second
During sub- reactor, multiple second sub- reactors are connected and/or are connected in parallel.
5. current conversion station according to claim 1, it is characterised in that first transverter and second transverter are wrapped
Include multiple valve modules；
Each valve module includes insulated gate bipolar transistor converter valve.
6. a kind of bipolar flexible direct current transmission system, it is characterised in that including sending end current conversion station and receiving end current conversion station；
The sending end current conversion station and/or the receiving end current conversion station are the current conversion station described in claim any one of 1-5.
7. transmission system according to claim 6, it is characterised in that the sending end current conversion station and the receiving end change of current
Station is the current conversion station；
The sending end current conversion station is that exchange turns DC converter station；The receiving end current conversion station is that direct current delivers stream current conversion station.
8. transmission system according to claim 7, it is characterised in that the exchange end of the first transverter and the second transverter with
Converter power transformer is connected；
In the sending end current conversion station in the first transverter high-pressure side of positive polarity change of current part and the receiving end current conversion station just
Second change of current of negative polarity change of current part in the first transverter high-pressure side of polarity change of current part, the sending end current conversion station
Device high-pressure side and the second transverter high-pressure side of negative polarity change of current part in the receiving end current conversion station are high by bipolarity
Press DC transmission line connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621235873.1U CN206452122U (en) | 2016-11-17 | 2016-11-17 | Bipolar flexible direct current transmission system and converter station thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621235873.1U CN206452122U (en) | 2016-11-17 | 2016-11-17 | Bipolar flexible direct current transmission system and converter station thereof |
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| CN206452122U true CN206452122U (en) | 2017-08-29 |
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| CN (1) | CN206452122U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451523A (en) * | 2016-11-17 | 2017-02-22 | 南方电网科学研究院有限责任公司 | Bipolar flexible direct current transmission system and converter station thereof |
| CN109802428A (en) * | 2018-12-24 | 2019-05-24 | 中国电力科学研究院有限公司 | A kind of soft straight power grid Safety system converter station locking failure measure amount calculating method and system |
| CN110247560A (en) * | 2019-07-10 | 2019-09-17 | 南方电网科学研究院有限责任公司 | Flexible direct current converter station valve hall and converter valve inlet wire system |
| CN111541265A (en) * | 2020-06-11 | 2020-08-14 | 南方电网科学研究院有限责任公司 | Converter station debugging method adopting single-station bipolar back-to-back operation mode |
| EP3747100B1 (en) | 2018-01-30 | 2022-03-16 | Hitachi Energy Switzerland AG | Surge arrestor dimensioning in a dc power transmission system |
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2016
- 2016-11-17 CN CN201621235873.1U patent/CN206452122U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451523A (en) * | 2016-11-17 | 2017-02-22 | 南方电网科学研究院有限责任公司 | Bipolar flexible direct current transmission system and converter station thereof |
| EP3747100B1 (en) | 2018-01-30 | 2022-03-16 | Hitachi Energy Switzerland AG | Surge arrestor dimensioning in a dc power transmission system |
| CN109802428A (en) * | 2018-12-24 | 2019-05-24 | 中国电力科学研究院有限公司 | A kind of soft straight power grid Safety system converter station locking failure measure amount calculating method and system |
| CN109802428B (en) * | 2018-12-24 | 2021-11-05 | 中国电力科学研究院有限公司 | Method and system for calculating locking fault measure quantity of converter station of flexible direct current power grid safety control system |
| CN110247560A (en) * | 2019-07-10 | 2019-09-17 | 南方电网科学研究院有限责任公司 | Flexible direct current converter station valve hall and converter valve inlet wire system |
| CN111541265A (en) * | 2020-06-11 | 2020-08-14 | 南方电网科学研究院有限责任公司 | Converter station debugging method adopting single-station bipolar back-to-back operation mode |
| CN111541265B (en) * | 2020-06-11 | 2022-04-12 | 南方电网科学研究院有限责任公司 | Converter station debugging method adopting single-station bipolar back-to-back operation mode |
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Effective date of registration: 20210608 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 |