CN208479487U - A kind of D.C. high voltage transmission mixing inverter - Google Patents
A kind of D.C. high voltage transmission mixing inverter Download PDFInfo
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- CN208479487U CN208479487U CN201821051109.8U CN201821051109U CN208479487U CN 208479487 U CN208479487 U CN 208479487U CN 201821051109 U CN201821051109 U CN 201821051109U CN 208479487 U CN208479487 U CN 208479487U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
Abstract
The utility model provides a kind of D.C. high voltage transmission mixing inverter, the inverter includes multiple identical bridge arms, each bridge arm is composed in series by can turn off pipe valve string with thyristor valve string, pipe valve string can each be turned off pipe can be turned off by m and be composed in series, m is the positive integer more than or equal to 1, each thyristor valve string is made of k Thyristors in series, and k is the integer more than or equal to 1.The commutation failure risk of conventional high-tension direct current transportation can be reduced using the D.C. high voltage transmission mixing inverter of the utility model.
Description
Technical field
The utility model belongs to direct current transportation field more particularly to a kind of D.C. high voltage transmission mixing inverter.
Background technique
High voltage dc transmission technology (HVDC, High-Voltage Direct Current) has using stable DC
Whether there is or not induction reactance, the advantages that capacitive reactance does not work yet, no stationary problem and the high-power remote direct current transportation that uses.High voltage direct current
Transmission of electricity is that three-phase alternating current is become direct current by converter station rectification, is then sent to another change of current by DC power transmission line
Station is reverse into the power transmission mode of three-phase alternating current.It is substantially made of two converter stations and DC transmission line, two converter stations
It is connected with the AC system at both ends.The equipment of HVDC transmission system includes: inverter, converter power transformer, flat wave reactance
Device, alternating current filter, direct current arrester and control protection equipment etc..Inverter is the core equipment of D.C. high voltage transmission, is shadow
Ring the key factor of HVDC system performance, the method for operation, equipment cost and running wastage etc..Inverter realizes direct current exchange
Electric mutually conversion, when its work is in rectification (or inversion) state, also known as rectifier (or inverter).Generally by two or more
A converter bridge forms commutation system, realizes the function of AC to DC, rheology exchange.
Commutation failure is one of higher failure of DC transmission system probability of happening.In inverter, the valve of conducting is exited
Fail to restore blocking ability within a period of time of backward voltage effect, or commutation process has not carried out during backward voltage
Finish, then when threshold voltage becomes forward direction, phase all will be switched to the original predetermined valve for exiting conducting by the valve of commutation, such case claims
For commutation failure.Commutation failure main cause is that fault in ac transmission system declines inverter side change of current busbar voltage, certain
Under the conditions of, some commutation failures can restore automatically, but in case of continuous commutation failure, converter valve will twice or repeatedly
Locking, interrupts the passway for transmitting electricity of direct current system, in severe cases it is possible that commutation mistake occurs simultaneously for multiple Inverter Stations
It loses, even results in mains breakdown.
Inverter mostly uses thyristor thyristor to form three-phase bridge rectification conduct in conventional high-tension direct current transportation
Basic unit, each bridge arm are made of thyristor valve string, due to thyristor valve string can not active control switch off current, inverter
With biggish change of current electric current and reactive power support, there are the risk of commutation failure, reliability is to be improved.
Summary of the invention
The purpose of the utility model is to overcome above-mentioned defects existing in the prior art, and tradition can be reduced by providing one kind
The inverter of the commutation failure risk of D.C. high voltage transmission.
In order to realize above-mentioned purpose of utility model, the utility model is provided the following technical solutions:
A kind of D.C. high voltage transmission mixing inverter, the inverter include multiple identical bridge arms, each bridge arm by
Pipe valve string composition can be turned off, pipe valve string can be each turned off pipe can be turned off by m and be composed in series, m is the positive integer greater than 1, can be closed
Series connection is realized in anode and cathode connection to disconnected pipe two-by-two, more specifically, the previous anode for turning off pipe and the latter can turn off the yin of pipe
Extremely it is connected and realizes series connection；Wherein, the pipe that turns off of pipe valve string first end can be turned off in the first bridge arm in the multiple bridge arm
Cathode is connect with DC voltage electrode, and the anode for turning off pipe and three-phase alternating current tie point that can turn off pipe valve string second end connect
It connects；The cathode for turning off pipe that pipe valve string first end can be turned off in the second bridge arm in the multiple bridge arm is electrically connected with three-phase alternating current
Contact connection, the anode for turning off pipe that can turn off pipe valve string second end are connect with DC voltage cathode.
Further, according to the D.C. high voltage transmission mixing inverter, described turns off closing in pipe valve string
Disconnected pipe is one of IGCT or GTO or IGBT modified turn-off device with reverse blocking capability or a variety of.It is special at this
In benefit, for the simplicity and consistency of expression, the collector of IGBT is described as anode, the emitter of IGBT is described as cathode and retouches
It states.
Further, according to the D.C. high voltage transmission mixing inverter, described turns off turning off in pipe valve
Pipe is that the IGCT or GTO or IGBT turn-off device without reverse blocking capability are combined with Diode series, wherein diode
Anode be connected with the cathode of turn-off device realization series connection formed one can turn off pipe, the cathode of the diode in pipe can be turned off
For the cathode that can turn off pipe, the anode that can turn off the turn-off device in pipe is the anode that can turn off pipe.
Further, according to the D.C. high voltage transmission mixing inverter, described turns off turning off in pipe valve
Pipe is that the IGCT or GTO or IGBT turn-off device without reverse blocking capability are combined with diode inverse parallel, wherein two poles
The anode of pipe is connected with the cathode of turn-off device, and the cathode of diode is connected with the anode during can turning off realizes inverse parallel shape
Pipe can be turned off at one, the cathode that can turn off the diode in pipe is the cathode that can turn off pipe, can turn off the diode in pipe
Anode is the anode that can turn off pipe.
Further, according to the D.C. high voltage transmission mixing inverter, the pipe that turns off is selected from following any
Two or more the combination for turning off pipe: IGCT or GTO or the IGBT modified with reverse blocking capability can turn off
Device；IGCT or GTO or IGBT turn-off device without reverse blocking capability are combined with Diode series；Without anti-
It is combined to IGCT or GTO or the IGBT turn-off device of blocking ability with diode inverse parallel.
Further, the utility model also provides a kind of D.C. high voltage transmission mixing inverter, and the inverter includes more
A identical bridge arm, each bridge arm can turn off pipe by one and form, wherein can close in the first bridge arm in the multiple bridge arm
The cathode of disconnected pipe is connect with DC voltage electrode, and anode is connect with three-phase alternating current tie point, first in the multiple bridge arm
The cathode that pipe can be turned off in bridge arm is connect with three-phase alternating current tie point, anode and DC voltage cathode；Wherein, can turn off pipe is
One IGCT or GTO or the IGBT turn-off device for not having reverse blocking capability is combined with a Diode series, wherein two
The anode of pole pipe is connected realization series connection formation one with the cathode of turn-off device can turn off pipe, can turn off the diode in pipe
Cathode is the cathode that can turn off pipe, and the anode that can turn off the turn-off device in pipe is the anode that can turn off pipe.
Further, according to the D.C. high voltage transmission mixing inverter, wherein Guan Weiyi can be turned off and do not had instead
It is combined to IGCT or GTO or the IGBT turn-off device of blocking ability with a diode inverse parallel, wherein the anode of diode
It is connected with the cathode of turn-off device, the cathode of diode is connected with the anode during can turning off realizes that inverse parallel formation one can
Shutdown pipe, the cathode that can turn off the diode in pipe be the cathode that can turn off pipe, can turn off the anode of the diode in pipe as can
Turn off the anode of pipe.
Further, the utility model also provides a kind of D.C. high voltage transmission mixing inverter, according to the high straightening
Stream transmission of electricity mixing inverter, each bridge arm further includes turning off the concatenated thyristor valve string of pipe valve string, Mei Gejing with described
Gate tube valve string is made of k Thyristors in series, and k is integer more than or equal to 1, wherein the anode of previous thyristor with it is latter
The cathode of a thyristor, which is connected, realizes series connection；Wherein, in the first bridge arm in the multiple bridge arm the cathode of thyristor valve string with
DC voltage electrode connection, the anode of thyristor valve string are connected with the cathode that can turn off pipe valve string；In the multiple bridge arm
The cathode of thyristor valve string is connect with three-phase alternating current tie point in two bridge arms, the anode of thyristor valve string and can turn off pipe valve string
Cathode be connected.
Further, the utility model also provides a kind of D.C. high voltage transmission mixing inverter, and the inverter includes more
A identical bridge arm, each bridge arm can turn off pipe by thyristor valve string and one and form, and each thyristor valve string is by k brilliant lock
Pipe is composed in series, and k is the integer more than or equal to 1, wherein the anode of previous thyristor is connected with the cathode of the latter thyristor
Realize series connection；Wherein, the cathode of thyristor valve string is connect with DC voltage electrode in the first bridge arm in the multiple bridge arm, brilliant
The anode of gate tube valve string is connected with the cathode that can turn off pipe valve string；Thyristor valve string in the second bridge arm in the multiple bridge arm
Cathode is connect with three-phase alternating current tie point, and the anode of thyristor valve string is connected with the cathode that can turn off pipe valve string.
Further, according to the D.C. high voltage transmission mixing inverter, wherein the pipe that turns off is selected from following
Any one turns off pipe: IGCT or GTO or IGBT the modified turn-off device with reverse blocking capability；Do not have
IGCT or GTO or the IGBT turn-off device of reverse blocking capability are combined with Diode series；Without reverse blocking capability
IGCT or GTO or IGBT turn-off device are combined with diode inverse parallel.
Mixing inverter provided by the utility model because using the specific bridge arm for turning off pipe structure, and can close
Bridge arm and the specific connection type of disconnected pipe valve string and thyristor valve string cascaded structure, thus it is defeated to reduce conventional high-tension direct current
The commutation failure risk of electricity.
It should be understood that foregoing general description and following detailed description are all exemplary, and it is intended to mention
For the further explanation of claimed technology.
Detailed description of the invention
The utility model embodiment is described in more detail in conjunction with the accompanying drawings, the utility model above-mentioned and its
Its purpose, feature and advantage will be apparent.Attached drawing is used to provide to further understand the utility model embodiment, and
And part of specification is constituted, it is used to explain the utility model together with the utility model embodiment, not constitute to this reality
With novel limitation.Unless explicitly stated otherwise, otherwise attached drawing is not considered as drawn to scale.In the accompanying drawings, identical reference label
Typically represent same components or step.In the accompanying drawings:
Fig. 1 is the structural schematic diagram for showing inverter in the prior art；
Fig. 2 is shown according to a kind of structural schematic diagram of the inverter of specific embodiment of the utility model；
Fig. 3 is shown according to a kind of structural schematic diagram of the inverter of specific embodiment of the utility model；
Fig. 4 is the structure for turning off pipe valve string for showing the inverter according to the utility model the first specific embodiment
Schematic diagram；
Fig. 5 is the structure for turning off pipe valve string for showing the inverter according to second of specific embodiment of the utility model
Schematic diagram；
Fig. 6 is the structure for turning off pipe valve string for showing the inverter according to the utility model the third specific embodiment
Schematic diagram.
Specific embodiment
In order to enable the purpose of this utility model, technical solution and advantage become apparent, retouch in detail below with reference to accompanying drawings
State example embodiment according to the present utility model.Obviously, described embodiment is only that a part of the utility model is implemented
Example, rather than the whole embodiments of the utility model, it should be appreciated that the utility model is not by the limit of example embodiment described herein
System.Based on embodiment described herein, those skilled in the art are obtained in the case where not making the creative labor
All other embodiment should all be fallen within the protection scope of the utility model.In the present description and drawings, it will use identical
Appended drawing reference indicate substantially the same element and function, and duplicate explanation to these elements and function will be omitted.This
Outside, for clarity and brevity, it is convenient to omit for the explanation of function and construction known in the art.
Fig. 1 is the structural schematic diagram of prior art inverter.Existing high voltage direct current converter mostly uses the three-phase bridge change of current
Circuit, also referred to as six pulse conversion devices, there are six identical bridge arm (Ap, Bp, Cp, An, Bn, Cn) for tool, and each bridge arm is by brilliant lock
Pipe valve string composition.Thyristor valve string can not active control switch off current, inverter have biggish change of current electric current and reactive power support,
There are the risk of commutation failure, reliability is to be improved.
Fig. 2 is a kind of converter structure schematic diagram of specific embodiment of technical solutions of the utility model, with reference first to Fig. 2
The converter structure of the specific embodiment is described in detail.The D.C. high voltage transmission mixing inverter packet of the utility model
Multiple identical bridge arms are included, include 6 using the high voltage direct current converter of three-phase bridge converter circuit to be in the present embodiment
For identical bridge arm.D.C. high voltage transmission mixing inverter share 6 identical bridge arms (Ap, An, Bp, Bn,
Cp, Cn), each bridge arm is formed by that can turn off pipe valve string, and can each turn off pipe valve string by m can turn off pipe (Q1 ... Qm)
It is composed in series, m is the positive integer more than or equal to 1.Wherein, P point and N point are respectively DC voltage tie point, and P is anode, and N is negative
Pole, A, B, C point connect three-phase alternating current.Wherein, pipe valve string can be turned off in the first bridge arm (Ap, Bp, Cp) in 6 bridge arms
First end turns off pipe (Q1) cathode connect with DC voltage electrode (P), can turn off pipe valve string second end turns off pipe
(Qm) anode connect with three-phase alternating current tie point (A, B, C)；In the second bridge arm (An, Bn, Cn) in 6 bridge arms
Pipe valve string first end can be turned off turns off pipe (Q1) cathode connect with three-phase alternating current tie point (A, B, C), second end
Pipe (Q can be turned offm) anode connect with DC voltage cathode (P).
Specifically, the pipe that turns off refers to the device with automatic shutoff function, i.e., can both be controlled by controlling signal
Device processed it is open-minded, and can control device shutdown power electronic devices.The turn-off device can include but is not limited to,
GTO (gate level turn-off thyristor), IGCT (integrated gate commutated thyristor), IGBT (insulated gate bipolar transistor), GTR (electricity
Power transistor), MOSFET (electric power field effect transistor) etc..The turn-off device can be one, or it is multiple, when
It is concatenated relationship between multiple turn-off devices, wherein previous to turn off when turn-off device is two or more
The anode of pipe is connected with the cathode that the latter can turn off pipe realizes series connection, and multiple turn-off devices can closing for same type
Disconnected device, such as two GTO series connection or three GTO series connection etc.；It is also possible to different types of turn-off device to be gone here and there
Connection, such as a GTO connects with a GTR or a GTO connects etc. with GTR and IGBT three
Deng.
Further, the structure for turning off pipe valve string of the inverter of the first specific embodiment as shown in Figure 4, can
Shutdown pipe valve string can turn off pipe (Q1 ... Qm) by m and be composed in series, and m is the positive integer greater than 1 at this time, described to turn off pipe Qm
For IGCT or GTO or one of the modifieds turn-off device such as IGBT or a variety of with reverse blocking capability.It can switching off device
Part two-by-two connect by connected realize of anode and cathode, can turn off the turn-off device (Q of pipe valve string first end1) cathode be can turn off pipe valve
The cathode of string can turn off the turn-off device (Q of pipe valve string second endm) anode be the anode that can turn off pipe valve string.It is incorporated in
In embodiment shown in Fig. 2, in the first bridge arm (Ap, Bp, Cp) of the bridge arm, turning off for pipe valve string first end can be turned off
Device (Q1) cathode connect with DC voltage electrode (P), the turn-off device (Q of pipe valve string second end can be turned offm) anode with
The connection of three-phase alternating current tie point；Pipe valve string first end can be turned off in the second bridge arm (An, Bn, Cn) in the multiple bridge arm
Turn-off device (Q1) cathode connect with three-phase alternating current tie point (A, B, C), turning off for pipe valve string second end can be turned off
Device (Qm) anode connect with DC voltage cathode.
In second specific embodiment of the utility model inverter, second of specific embodiment party as shown in connection with fig. 5
The structure for turning off pipe valve string of the inverter of formula, can turn off pipe valve string and can turn off pipe (Q1 ... Qm) by m and be composed in series,
M is the positive integer more than or equal to 1 at this time, and the pipe that turns off is in IGCT or GTO or IGBT without reverse blocking capability
Any turn-off device and Diode series combination, difference can turn off turn-off devices in pipe can it is identical also with
It is different.Wherein, the anode of diode is connected with the cathode (or emitter) of turn-off device, and pipe structure can be turned off by forming one
(Qi, 2≤i≤m).In the present embodiment, can turn off pipe valve string can be can to turn off pipe structure described in one, or two or
Above pipe structures in series that turns off forms；When it is described turn off pipe valve string be two or more described in can turn off pipe
When structures in series, the cathode (or emitter) of diode in pipe (Qi) can be turned off and pipe (Q can be turned offi-1) in turn-off device
Anode (or collector) is connected.The cathode that the diode in pipe can be turned off is the cathode that can turn off pipe, can turn off closing in pipe
The anode of disconnected device is the anode that can turn off pipe.In conjunction in the embodiment shown in Figure 2, the bridge arm the first bridge arm (Ap,
Bp, Cp) in, can turn off pipe valve string first end turns off pipe (Q1) in diode cathode and DC voltage electrode (P) even
It connects, can turn off pipe valve string second end turns off pipe (Qm) in turn-off device anode and three-phase alternating current tie point connect
It connects；Pipe valve string first end can be turned off in the second bridge arm (An, Bn, Cn) in the multiple bridge arm turns off pipe (Q1) in
The cathode of diode is connect with three-phase alternating current tie point (A, B, C), and can turn off pipe valve string second end turns off pipe (Qm) in
The anode of turn-off device connect with DC voltage cathode.
In the third specific embodiment of the utility model inverter, the third specific embodiment party as shown in connection with fig. 6
The structure for turning off pipe valve string of the inverter of formula, can turn off pipe valve string and can turn off pipe (Q1 ... Qm) by m and be composed in series,
M is the positive integer more than or equal to 1 at this time, and the pipe Qm that turns off is IGCT or GTO or IGBT without reverse blocking capability
Equal turn-off devices are combined with diode inverse parallel.Wherein, inverse parallel combination refers specifically to, the anode of diode with can turn off
The cathode (or emitter) of device is connected, and the cathode of diode is connected with the anode (or collector) of turn-off device.This implementation
In example, can turn off pipe valve string can be can to turn off pipe structure described in one, or two or more described to turn off pipe
Structures in series forms；When that can turn off pipe valve string and can turn off pipe by two or more and be connected in series, turn-off device in Qi
Anode (or collector) be connected with the cathode (or emitter) of turn-off device in Qi-1.The diode turned off in pipe
Cathode be the cathode that can turn off pipe, the anode that can turn off the diode in pipe is the anode that can turn off pipe.In conjunction with shown in Fig. 2
Embodiment in, in the first bridge arm (Ap, Bp, Cp) of the bridge arm, can turn off pipe valve string first end turns off pipe (Q1)
In the cathode of diode connect with DC voltage electrode (P), can turn off pipe valve string second end turns off pipe (Qm) in two
The anode of pole pipe is connect with three-phase alternating current tie point；Pipe can be turned off in the second bridge arm (An, Bn, Cn) in the multiple bridge arm
Valve string first end turns off pipe (Q1) in the cathode of diode connect with three-phase alternating current tie point (A, B, C), can turn off
Pipe valve string second end turns off pipe (Qm) in the anode of diode connect with DC voltage cathode.
Fig. 3 is the converter structure schematic diagram of technical solutions of the utility model another kind specific embodiment, referring to Fig. 3
The converter structure of the specific embodiment is described in detail.In the present embodiment, D.C. high voltage transmission mixing inverter
6 identical bridge arms (Ap, An, Bp, Bn, Cp, Cn) are shared, each bridge arm is by thyristor valve string and can turn off pipe valve string
Composition, each thyristor valve string are composed in series by k thyristor (S1~Sk), and k is the positive integer more than or equal to 1, can each be closed
Disconnected pipe valve string can turn off pipe (Q1 ... Qm) by m and be composed in series, and m is the positive integer more than or equal to 1, wherein previous crystalline substance lock
The anode of pipe is connected with the cathode of the latter thyristor realizes series connection, and thyristor valve string and the tie point that can turn off pipe valve string are T.
P point and N point are respectively DC voltage tie point, and P is anode, and N is cathode, and A, B, C point connect three-phase alternating current.Wherein, described
Thyristor is unidirectional thyristor, and the pipe that turns off can turn off pipe structure for any of the above-described kind.It is equivalent to aforementioned such as Fig. 2
Shown on the basis of specific embodiment, a thyristor valve string is added in series connection on each bridge arm.The of the bridge arm
In one bridge arm (Ap, Bp, Cp), the thyristor (S of thyristor valve string first end1) cathode connect with DC voltage electrode (P), it is brilliant
Thyristor (the S of gate tube valve string second endk) anode and the thyristor valve string and the tie point T of pipe valve string can be turned off connect；
Thyristor (the S of thyristor valve string first end in the second bridge arm (An, Bn, Cn) in the multiple bridge arm1) in thyristor
Cathode is connect with three-phase alternating current tie point (A, B, C), the thyristor (S of thyristor valve string second endk) anode and the crystalline substance
Gate tube valve string is connected with the tie point T that can turn off pipe valve string.
More specifically, in this embodiment, it is described turn off pipe be IGCT with reverse blocking capability or GTO or
The modifieds such as IGBT turn-off device (as shown in Figure 4).When it is described turn off pipe valve string be one described in can turn off pipe structure when,
The cathode (or emitter) that pipe Q1 can be turned off is connected with tie point T.When the pipe valve string that turns off is two or more institute
It states when can turn off pipe structures in series, QiCathode (or emitter) and Qi-1Anode (or collector) be connected, can turn off in pipe valve
The cathode (or emitter) and tie point T-phase that pipe Q1 can be turned off connect.
More specifically, in this embodiment, the pipe structure that turns off turned off in pipe valve string is without reversed resistance
The combination (as shown in Figure 5) of the turn-off devices such as the IGCT or GTO of cutting capacity or IGBT and Diode series.Wherein, diode
Anode be connected with the cathode (or emitter) of turn-off device, formed one can turn off pipe structure Qi.In the present embodiment, it can close
Disconnected pipe valve string can be can to turn off pipe structure described in one, or it is two or more it is described turn off pipe structures in series and
At.More specifically, diode in pipe structure Q1 can be turned off when the pipe valve string that can turn off is that can turn off pipe structure described in one
Cathode and tie point T-phase connect；When it is described turn off pipe valve string be two or more described in can turn off pipe structures in series when, Qi
The cathode (or emitter) of middle diode is connected with the anode (or collector) of turn-off device in Qi-1, can turn off in pipe Q1
The cathode (or emitter) of diode is connected with tie point T.
More specifically, the pipe structure that turns off turned off in pipe valve string is without reversed resistance when in the embodiment
The turn-off devices such as the IGCT or GTO of cutting capacity or IGBT combine (as shown in Figure 6) with diode inverse parallel.Wherein, described anti-
Parallel combination refers specifically to, and the anode of diode is connected with the cathode (or emitter) of turn-off device, the cathode of diode with can
The anode (or collector) for turning off device is connected.In the present embodiment, can turn off pipe valve string can be that can turn off pipe knot described in one
Structure, or the two or more pipe structures in series that turn off form, more specifically, can turn off pipe valve string when described and be
Pipe structure can be turned off described in one, can turn off pipe Q1The cathode and tie point T-phase of middle diode connect；Pipe valve string is turned off when described
When can turn off pipe series connection for two or more, QiThe anode (or collector) and Q of middle turn-off devicei-1In can switching off device
The cathode (or emitter) of part is connected, and can turn off can turn off pipe Q in pipe valve string1In turn-off device anode (or collector)
Connect with tie point T-phase, can also turn off can turn off pipe Q in pipe valve string1In diode cathode (or emitter) and tie point T
It is connected.
Mixing inverter provided by the utility model because using the specific bridge arm for turning off pipe structure, and can close
Bridge arm and the specific connection type of disconnected pipe valve string and thyristor valve string cascaded structure, thus it is defeated to reduce conventional high-tension direct current
The commutation failure risk of electricity.
Specifically, those skilled in the art can select the specific component with principle according to the present utility model
Property setting, as long as can be realized the principle of the control method of the utility model.
It should be noted that purpose of the term as used in this specification merely for description particular implementation, rather than
It is intended to limit the utility model.Unless the context clearly indicates otherwise, otherwise singular as used herein
" one ", "one" and "the" be also intended to including plural form.The terms "include", "comprise" or its any other variant are intended to
Cover non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or setting
Standby intrinsic element.In the absence of more restrictions, the element limited by sentence " including ... ", it is not excluded that wrapping
Include in the process, method, article or equipment of the element that there is also other identical elements.
Those skilled in the art should understand that: the above various embodiments is only to illustrate the technical side of the utility model
Case, rather than its limitations；Although the present invention has been described in detail with reference to the aforementioned embodiments, but the skill of this field
Art personnel are possible to modify the technical solutions described in the foregoing embodiments, or special to some or all of technologies
Sign is equivalently replaced；And these are modified or replaceed, the utility model right that it does not separate the essence of the corresponding technical solution
The range of claim.
Claims (10)
1. a kind of D.C. high voltage transmission mixing inverter, the inverter includes multiple identical bridge arms, and each bridge arm is by can
Pipe valve string composition is turned off, pipe valve string can be each turned off pipe can be turned off by m and be composed in series, m is the positive integer greater than 1, wherein preceding
One anode that can turn off pipe is connected with the cathode that the latter can turn off pipe realizes series connection；Wherein, in the multiple bridge arm
The cathode for turning off pipe that pipe valve string first end can be turned off in one bridge arm is connect with DC voltage electrode, can turn off pipe valve string second
The anode for turning off pipe at end is connect with three-phase alternating current tie point；Pipe valve can be turned off in the second bridge arm in the multiple bridge arm
The cathode for turning off pipe of string first end is connect with three-phase alternating current tie point, can turn off the pipe that turns off of pipe valve string second end
Anode is connect with DC voltage cathode.
2. D.C. high voltage transmission mixing inverter according to claim 1, described turns off turning off in pipe valve string
Pipe is one of IGCT or GTO or IGBT modified turn-off device with reverse blocking capability or a variety of.
3. D.C. high voltage transmission mixing inverter according to claim 1, described turning off in pipe valve turns off pipe
For without reverse blocking capability IGCT or GTO or IGBT turn-off device combined with Diode series, wherein diode
Anode is connected with the cathode of turn-off device, and the cathode that can turn off the diode in pipe is the cathode that can turn off pipe, can turn off pipe
In the anode of turn-off device be the anode that can turn off pipe.
4. D.C. high voltage transmission mixing inverter according to claim 1, described turning off in pipe valve turns off pipe
For without reverse blocking capability IGCT or GTO or IGBT turn-off device combined with diode inverse parallel, wherein diode
Anode be connected with the cathode of turn-off device, the cathode of diode is connected with the anode during can turning off, and can turn off in pipe
The cathode of diode is the cathode that can turn off pipe, and the anode that can turn off the diode in pipe is the anode that can turn off pipe.
5. D.C. high voltage transmission mixing inverter according to claim 1, the pipe that turns off is selected from following any two
Kind or the two or more combinations for turning off pipe: IGCT or GTO or the IGBT modified with reverse blocking capability can switching off device
Part；IGCT or GTO or IGBT turn-off device without reverse blocking capability are combined with Diode series；Without reversed resistance
IGCT or GTO or the IGBT turn-off device of cutting capacity are combined with diode inverse parallel.
6. a kind of D.C. high voltage transmission mixing inverter, the inverter includes multiple identical bridge arms, and each bridge arm is by one
It is a to turn off pipe composition, wherein the cathode and DC voltage electrode that pipe can be turned off in the first bridge arm in the multiple bridge arm connect
It connects, anode is connect with three-phase alternating current tie point, and the cathode and three-phase of pipe can be turned off in the second bridge arm in the multiple bridge arm
The connection of alternating current tie point, anode and DC voltage cathode；Wherein, Guan Weiyi can be turned off and do not have reverse blocking capability
IGCT or GTO or IGBT turn-off device are combined with a Diode series, wherein the anode of diode and turn-off device
Cathode is connected, and the cathode that can turn off the diode in pipe is the cathode that can turn off pipe, can turn off the sun of the turn-off device in pipe
The anode of pipe can extremely be turned off.
7. D.C. high voltage transmission mixing inverter according to claim 6, wherein Guan Weiyi can be turned off and do not had reversely
IGCT or GTO or the IGBT turn-off device of blocking ability are combined with a diode inverse parallel, wherein the anode of diode with
The cathode of turn-off device is connected, and the cathode of diode is connected with the anode during can turning off, and can turn off the diode in pipe
Cathode is the cathode that can turn off pipe, and the anode that can turn off the diode in pipe is the anode that can turn off pipe.
8. any D.C. high voltage transmission mixing inverter according to claim 1~7, each bridge arm further includes and institute
The concatenated thyristor valve string of pipe valve string can be turned off by stating, and each thyristor valve string is made of k Thyristors in series, and k is more than or equal to 1
Integer, wherein the anode of previous thyristor be connected with the cathode of the latter thyristor realization series connection；Wherein, the multiple
The cathode of thyristor valve string is connect with DC voltage electrode in the first bridge arm in bridge arm, the anode of thyristor valve string with can turn off
The cathode of pipe valve string is connected；The cathode of thyristor valve string and three-phase alternating current tie point in the second bridge arm in the multiple bridge arm
Connection, the anode of thyristor valve string are connected with the cathode that can turn off pipe valve string.
9. a kind of D.C. high voltage transmission mixing inverter, the inverter includes multiple identical bridge arms, and each bridge arm is by crystalline substance
Gate tube valve string and one can turn off pipe valve string composition, and each thyristor valve string is made of k Thyristors in series, and k is more than or equal to 1
Integer, wherein the anode of previous thyristor be connected with the cathode of the latter thyristor realization series connection；Wherein, the multiple
The cathode of thyristor valve string is connect with DC voltage electrode in the first bridge arm in bridge arm, the anode of thyristor valve string with can turn off
The cathode of pipe valve string is connected；The cathode of thyristor valve string and three-phase alternating current tie point in the second bridge arm in the multiple bridge arm
Connection, the anode of thyristor valve string are connected with the cathode that can turn off pipe valve string.
10. D.C. high voltage transmission mixing inverter according to claim 9, wherein the pipe that turns off is selected from following
Any one turns off pipe: IGCT or GTO or IGBT the modified turn-off device with reverse blocking capability；Without anti-
It is combined to IGCT or GTO or the IGBT turn-off device of blocking ability with Diode series；Without reverse blocking capability
IGCT or GTO or IGBT turn-off device are combined with diode inverse parallel.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108712090A (en) * | 2018-07-03 | 2018-10-26 | 清华大学 | A kind of D.C. high voltage transmission mixing transverter |
| CN108712090B (en) * | 2018-07-03 | 2024-04-19 | 清华大学 | High-voltage direct-current transmission hybrid converter |
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2018
- 2018-07-03 CN CN201821051109.8U patent/CN208479487U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108712090A (en) * | 2018-07-03 | 2018-10-26 | 清华大学 | A kind of D.C. high voltage transmission mixing transverter |
| CN108712090B (en) * | 2018-07-03 | 2024-04-19 | 清华大学 | High-voltage direct-current transmission hybrid converter |
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