CN207588689U - A kind of superhigh voltage DC breaker power electronics tributary unit - Google Patents
A kind of superhigh voltage DC breaker power electronics tributary unit Download PDFInfo
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- CN207588689U CN207588689U CN201721812346.7U CN201721812346U CN207588689U CN 207588689 U CN207588689 U CN 207588689U CN 201721812346 U CN201721812346 U CN 201721812346U CN 207588689 U CN207588689 U CN 207588689U
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Abstract
The utility model provides a kind of superhigh voltage DC breaker power electronics tributary unit, including frame assembly and two PP IGBT modules being set in frame assembly, two diode (led) modules, 2/N RC buffer loops module, multiple control plate units, frame, multiple driving plates, driving power.The integrated all devices of the utility model unit, compact-sized, beautiful by power supply, control, electrical, structured set on a unit, circuit distribution is reasonable.Also using stacked structure, all modules, unit independently installed, dismounting and can all be safeguarded the utility model, effectively save the time of installation and wiring.
Description
Technical field
The utility model is related to super high voltage direct current electricity transmission technical field more particularly to a kind of superhigh voltage DC breaker electric power
Electronics tributary unit.
Background technology
In recent years, MTDC transmission system is fast-developing, and obtains certain practical application, such as three end of China's Generated By Nanao Wind Power Plants
Five end flexible DC power transmission demonstration project of direct current transportation demonstration project and Zhoushan.At present due to there is no high current to open in straight-flow system
The dc circuit breaker of cutting capacity, the safeguard measure of DC grid excision direct fault current are mainly latched transverter or cut-off friendship
Flow side breaker.According to existing method, entire direct-flow distribution system will stop transport in short-term, while to the AC system of parallel running
Enormous impact is caused, the serious reliability for reducing system power supply.High current is cut-off as being applied in several milliseconds in DC grid
Dc circuit breaker, it is quick to cut off faulty equipment or circuit, it is possible to ensure the stable operation of straight-flow system non-faulting part, pole
The earth improves system reliability.Therefore, the research and development of dc circuit breaker are one of key technologies for developing DC grid.
Invention content
To solve the above problems, the utility model provides a kind of superhigh voltage DC breaker power electronics tributary unit,
It is buffered back including frame assembly and two PP-IGBT modules being set in frame assembly, two diode (led) modules, 2/N RC
Road module, multiple control plate units, frame, multiple driving plates, driving power；
The frame assembly includes two side frames and the crossbeam between two side frames, and the side frame is by top frame and is located at
Bottom frame composition under top frame, the crossbeam both ends are respectively fixed on a bottom frame；Top frame is located at medium position on bottom frame top, long
Degree is shorter than bottom frame；Modules are set in frame；
The PP-IGBT modules include N number of PP-IGBT, 2N PP-IGBT radiator, N+1 insulating part, and wherein N is whole
Number；Each PP-IGBT radiators are evenly distributed in a row, and the PP-IGBT radiators inboard at both ends is provided with insulating part；From
PP-IGBT radiator row one end is arranged at intervals to the other end, PP-IGBT and insulating part；The both ends of PP-IGBT radiators row are respectively set
It puts there are one side guide, and an at least pull rod is provided between two side guides, the pull rod is fixed as with two side guides
One；Top bolt, each PP-IGBT radiators are provided between the adjacent side guide in one end of the PP-IGBT radiators row
The PP-IGBT installation directions of both sides are on the contrary, for one group of PP-IGBT；
The diode (led) module includes M diode, M+1 diode radiating device, and wherein M is integer；Each diode
Radiator is evenly distributed in a row, the diode radiating device inboard at both ends is provided with diode, remaining each diode dissipates
Hot device both sides are respectively provided with there are one diode, and the both ends of diode radiating device row are each provided with a side guide, and two side pressures
An at least pull rod is provided between plate, the pull rod is fixed as one with two side guides；The diode radiating device row
Top bolt is provided between the adjacent side guide in one end；
Two diode (led) modules respectively along crossbeam length direction be mounted on bottom frame upper end, and respectively be located at top frame both ends with
Between neighbouring arrester；Two PP-IGBT modules are arranged side by side along crossbeam length direction between two top frames.
Driving power mounting bracket, driving board mounting stand are respectively arranged with above described two diode (led) modules, is respectively used to
Installation driving power, the driving plate being sequentially arranged；
The RC buffer loops module includes several capacitances, several resistance, and each capacitance both ends pass through copper bus-bar string
It is linked togather, each capacitance is cascaded by copper bus-bar.
Further, every group of pp-IGBT corresponds to diode die four diodes in the block, composition diode bridge structure electricity
Road；In diode bridge structural circuit, each pp-IGBT source electrodes, drain electrode are all connected with there are one diode, and source electrode is and two poles
Anode connection, the drain electrode of pipe are connect with diode cathode；In entire diode bridge structural circuit, connect with source electrode two
Diode cathode links together, and links together with two diode cathodes of drain electrode connection；Each diode bridge structure
Circuit is connected.
Further, arrester module is further included, the arrester module is connect with diode radiating device by copper bus-bar,
Arrester number is N/2 in arrester module, each arrester difference RC buffer loop in parallel.
Further, each diode bridge structural circuit is in parallel with a RC buffer loop.
Further, it is arranged with butterfly spring outside the top bolt of PP-IGBT modules and/or diode (led) module.
Further, there are four the pull rod of PP-IGBT modules and/or diode (led) module tools, a cubical area is surrounded,
PP-IGBT modules and/or diode (led) module are located in cubical area.
Further, M is twice of N.
Further, arrester module is set to bottom frame side along crossbeam length direction.
The beneficial effects of the invention are as follows：
The integrated all devices of invention unit, by power supply, control, electrical, structured set on a unit, structure is tight
It gathers, is beautiful, circuit distribution is reasonable.The present invention also using stacked structure, all modules, unit all can independently installed, dismounting and
It safeguards, effectively saves the time of installation and wiring.Power electronic component in unit has cut-off current big, is in after failure
The characteristics of short circuit curve, small driving power.The present invention is reduced in design and serial number, improves and reliability of connecting, on-state
Nearly zero is lost, supports current difference alienation configuration.
The present invention is at low cost, supports that reclosing, floor space is small, reliability is high, controllability is strong, technical price has optimization
Prospect.
Description of the drawings
Fig. 1 is power electronics tributary unit front graphics.
Fig. 2 is power electronics tributary unit back side graphics.
Fig. 3 is frame assembly graphics.
Fig. 4 is PP-IGBT module graphics.
Fig. 5 is diode (led) module graphics.
Fig. 6 is RC buffer loop module graphics.
Fig. 7 is left arrester unit three-dimensional figure.
Fig. 8 is diode bridge structure buffering branch topological circuit figure.
In figure：1. left arrester unit, 2. left diode (led) modules, 3.PP-IGBT modules, 4. right diode (led) modules, 5. is right
Arrester module, 6.RC buffer loop modules, 7. control plate units, 8. driving plates, 9. driving powers, 10.PP-IGBT,
11.PP-IGBT radiators, 12. insulating parts, 13. diodes, 14. diode radiating devices, 15. capacitances, 16. resistance, 17. bronze medals are female
Row, 18. arrester modules, 19. diode bridge structural circuits, 20. snubber circuits, 21. diode bridge structures buffering
Branch.
Specific embodiment
As shown in Figure 1 and Figure 2, superhigh voltage DC breaker power electronics tributary unit of the present invention includes frame assembly
And it is set to two PP-IGBT modules, 3, two diode (led) modules in frame assembly, multiple RC buffer loops modules 6, multiple
Control plate unit 7, frame assembly, multiple driving plates 8, driving power 9.
Various pieces are illustrated below.
1. frame assembly
As shown in figure 3, frame assembly includes two side frames and the crossbeam between two side frames, the side frame is by top frame
And the bottom frame composition under top frame, the crossbeam both ends are respectively fixed on a bottom frame；Top frame is located at middle part on bottom frame top
Position, length are shorter than bottom frame.The effect of frame is for installing modules, it can be seen from the figure that modules are set to
In the space that side frame is surrounded with crossbeam.
2. PP-IGBT modules 3
As shown in figure 4, the PP-IGBT modules 3 include N number of PP-IGBT 10,2N PP-IGBT radiator 11, N+1
Insulating part 12, wherein N are integer.N is 22 in the present embodiment.
Each PP-IGBT radiators 11 are evenly distributed in a row, are provided with positioned at 11 inboard of PP-IGBT radiators at both ends
Insulating part 12 arranges one end to the other end from PP-IGBT radiators 11, and PP-IGBT 10 is arranged at intervals with insulating part 12.PP-IGBT
Radiator 11 is not only acted as to 10 device cooling effect of PP-IGBT, and plays the role of current lead-through.Each PP-IGBT dissipates
10 installation directions of PP-IGBT of hot 11 both sides of device are on the contrary, for one group of PP-IGBT 10.
The both ends that PP-IGBT radiators 11 arrange are each provided with a side guide, and be provided at least between two side guides
A piece pull rod, the pull rod are fixed on two sides for being fixed as one with two side guides, by the row of PP-IGBT radiators 11
Between pressing plate.Top bolt is provided between the adjacent side guide in one end that the PP-IGBT radiators 11 arrange, and pushes up and is arranged outside bolt
There is at least one butterfly spring（As shown in Figure 4）.Top bolt is threadedly attached on the utility model.When valve string module device needs
When replacing, the pressure of module entirety can be laid down by adjusting the position of top bolt, carry out replacement maintenance.It is only critical when installing again
It is completed Gu module can be pressed by screw thread.
In the present embodiment, there are three butterfly spring tools.Butterfly spring plays the role of ensureing pressure after compressing, it is ensured that PP-
The conductive requirement of IGBT 10.
Further, four pull rods are preferably provided with, surround a cubical area, the row of PP-IGBT radiators 11 are located at vertical
In cube region.Pull rod is fixed together by the nut bolt side guide neighbouring with butterfly spring.
3. diode (led) module
As shown in figure 5, superhigh voltage DC breaker diode 1 described in the utility model, which is pressed valve string modular structure, includes N
A diode 13, N+1 diode radiating device 14, wherein N are integer.Diode has 22 in the present embodiment.
Each diode radiating device 14 is evenly distributed in a row, and 14 inboard of diode radiating device at both ends is provided with one
A diode 13, remaining each 14 both sides of diode radiating device are respectively provided with there are one diode 13.Diode radiating device 14 is not only
Play the role of to 13 cooling effect of diode, and play current lead-through.
The both ends that diode radiating device 14 arranges are each provided with a side guide, and be provided at least one between two side guides
Root pull rod, the pull rod are fixed on two side pressures for being fixed as one with two side guides, by the row of diode radiating device 14
Between plate.Top bolt is provided between the adjacent side guide 3 in one end that the diode radiating device 14 arranges, and pushes up and is arranged with outside bolt
Butterfly spring.Top bolt is threadedly attached on the utility model.When valve string module device needs replacing, the position of top bolt is adjusted
The pressure of module entirety can be laid down by putting, and carry out replacement maintenance.When installing again, as long as module can be pressed by fastening thread
Into.
In the present embodiment, there are three butterfly spring tools.Butterfly spring plays the role of ensureing pressure after compressing, it is ensured that two poles
The conductive requirement of pipe.
On 14 column direction of diode radiating device, in pairs, the installation direction of every group of diode is opposite for diode.When
So, diode press fitting direction can be changed according to the circuit of superhigh voltage DC breaker, and the installation direction of every group of diode can be with
It is identical.
Further, four pull rods are preferably provided with, surround a cubical area, the row of diode radiating device 14 are located at cube
In body region.Pull rod is fixed together by the nut bolt side guide neighbouring with butterfly spring.
Two diode (led) modules are mounted on bottom frame upper end respectively along crossbeam length direction, and are located at top frame both ends respectively,
Left diode (led) module 2 as shown in Figure 1, right diode (led) module 4；Two PP-IGBT modules 3 are set side by side along crossbeam length direction
It is placed between two top frames.
9 mounting bracket of driving power, 8 mounting bracket of driving plate are respectively arranged with above described two diode (led) modules, is used respectively
In installation driving power 9, the driving plate 8 being sequentially arranged.
4. driving power 9, driving plate 8, control plate unit 7
9 mounting bracket of driving power, control 7 mounting bracket of plate unit are respectively arranged with above described two diode (led) modules, point
The control plate unit 7 for driving power 9 Yong Yu not installed, being sequentially arranged.Driving plate 8 is provided with above described two diode (led) modules
Mounting bracket, for installing the driving plate 8 being sequentially arranged.From figure 1 it appears that the both ends of each mounting bracket are mounted under it
On two side guides of face mould block, several horizontal stripes are sequentially arranged on mounting bracket, horizontal stripe will be used to install driving power 9, driving
Plate 8, control plate unit 7.
The each two PP-IGBT 10 of PP-IGBT modules 3 and 4 diodes of neighbouring diode (led) module form one two
Pole pipe bridge architecture circuit 19, all diode bridge structural circuits 19 are together in series.PP-IGBT modules 3 and diode (led) module
It is formed by connecting by copper bus-bar 17.
5. RC buffer loops module 6
Each RC buffer loops module 6 is set to 3 lower end of PP-IGBT modules, is fixed on above crossbeam.It is effective in structure
Space is utilized, structure is compacter.Diode (led) module is placed in parallel with RC buffer loops module 6.Not only may be used on this spline structure
In order to installing and dismounting, the connection distance of copper bar can be also reduced, reduces Material Cost.The modules of RC buffer loops shown in Fig. 66 are three-dimensional
Figure, RC buffer loops are made of capacitance 15, resistance 16 and copper bus-bar 17.Wherein capacitance 15, resistance 16 are cascaded, and are formed
Snubber circuit 20.Capacitance 15, resistance 16 are fixed on copper bus-bar 17, this connection mode can reduce stray inductance.
Further, arrester module 18, the arrester module 18 and diode radiating device 14 are further included and passes through copper mother
Row 17 connects, and arrester number is N/2 in arrester module 18, each arrester difference RC buffer loop in parallel.Such as Fig. 1
Shown, arrester has been allocated as two groups by the present embodiment, is respectively arranged at the left and right both sides of unit, referred to as left arrester unit 1,
Right arrester unit 5.In every group, each take shelter from the thunder is fixed by isolation beam（As shown in Figure 6）.Such as, left arrester unit 1 is provided with
6 arrester units are fixed by 6 arresters by isolation beam.Right arrester unit 5 passes through insulation by 5 arresters
Beam is fixed.Arrester module 18 is set to along crossbeam length direction by bottom frame.
Further, every group of pp-IGBT corresponds to diode die four diodes 13 in the block, forms diode bridge structure
Circuit 19；In diode bridge structural circuit 19, the source electrode of each pp-IGBT10, drain electrode are all connected with there are one diode 13, and
Source electrode is that connect, drain with the anode of diode 13 connect with 13 cathode of diode；Entire diode bridge structural circuit 19
In, two diode cathodes being connect with source electrode link together, and link together with two diode cathodes of drain electrode connection；
Each diode bridge structural circuit 19 is connected, composition diode bridge structure buffering branch 21.
Claims (8)
1. a kind of superhigh voltage DC breaker power electronics tributary unit, which is characterized in that including frame assembly and be set to frame
Two PP-IGBT modules, two diode (led) modules, 2/N RC buffer loops module in frame component, multiple control plate units,
Frame, multiple driving plates, driving power；
The frame assembly includes two side frames and the crossbeam between two side frames, and the side frame is by top frame and positioned at top frame
Under bottom frame composition, the crossbeam both ends are respectively fixed on a bottom frame；Top frame is located at medium position on bottom frame top, length ratio
Bottom frame is short；Modules are set in frame；
The PP-IGBT modules include N number of PP-IGBT, 2N PP-IGBT radiator, N+1 insulating part, and wherein N is integer；
Each PP-IGBT radiators are evenly distributed in a row, and the PP-IGBT radiators inboard at both ends is provided with insulating part；From PP-
IGBT radiator row one end is arranged at intervals to the other end, PP-IGBT and insulating part；The both ends of PP-IGBT radiators row are respectively set
There are one side guide, and an at least pull rod is provided between two side guides, the pull rod and two side guides are fixed as one
Body；Top bolt, each PP-IGBT radiators two are provided between the adjacent side guide in one end of the PP-IGBT radiators row
The PP-IGBT installation directions of side are on the contrary, for one group of PP-IGBT；
The diode (led) module includes M diode, M+1 diode radiating device, and wherein M is integer；Each diode radiating
Device is evenly distributed in a row, the diode radiating device inboard at both ends is provided with diode, remaining each diode radiating device
Both sides are respectively provided with there are one diode, and the both ends of diode radiating device row are each provided with a side guide, and two side guides it
Between be provided with an at least pull rod, the pull rod is fixed as one with two side guides；One end of the diode radiating device row
Top bolt is provided between adjacent side guide；
Two diode (led) modules are mounted on bottom frame upper end respectively along crossbeam length direction, and are located at top frame both ends respectively；Two
PP-IGBT modules are arranged side by side along crossbeam length direction between two top frames；
Driving power mounting bracket, driving board mounting stand are respectively arranged with above described two diode (led) modules, is respectively used to install
Driving power, the driving plate being sequentially arranged；
The RC buffer loops module includes several capacitances, several resistance, and each capacitance both ends are connected on by copper bus-bar
Together, each capacitance is cascaded by copper bus-bar.
2. superhigh voltage DC breaker power electronics tributary unit according to claim 1, which is characterized in that every group of pp-
IGBT corresponds to diode die four diodes in the block, forms diode bridge structural circuit；In diode bridge structural circuit,
Each pp-IGBT source electrodes, drain electrode are all connected with there are one diode, and source electrode is to connect, drain to be and two with the anode of diode
Pole pipe cathode connects；In entire diode bridge structural circuit, two diode cathodes being connect with source electrode link together, with
Two diode cathodes of drain electrode connection link together；Each diode bridge structural circuit series connection.
3. superhigh voltage DC breaker power electronics tributary unit according to claim 2, which is characterized in that further include and keep away
Thunder device module, the arrester module are connect with diode radiating device by busbar, and arrester number is N/ in arrester module
2, each arrester difference RC buffer loop in parallel.
4. superhigh voltage DC breaker power electronics tributary unit according to claim 3, which is characterized in that each two pole
Pipe bridge formula structural circuit is in parallel with a RC buffer loop.
5. superhigh voltage DC breaker power electronics tributary unit as described in claim 1, which is characterized in that PP-IGBT moulds
Butterfly spring is arranged with outside the top bolt of block and/or diode (led) module.
6. superhigh voltage DC breaker power electronics tributary unit as described in claim 1, which is characterized in that PP-IGBT moulds
There are four the pull rod of block and/or diode (led) module tools, surrounds a cubical area, PP-IGBT modules and/or diode (led) module
In cubical area.
7. superhigh voltage DC breaker power electronics tributary unit as described in claim 1, which is characterized in that M is the two of N
Times.
8. superhigh voltage DC breaker power electronics tributary unit as described in claim 1, which is characterized in that arrester module
Bottom frame side is set to along crossbeam length direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721812346.7U CN207588689U (en) | 2017-12-22 | 2017-12-22 | A kind of superhigh voltage DC breaker power electronics tributary unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721812346.7U CN207588689U (en) | 2017-12-22 | 2017-12-22 | A kind of superhigh voltage DC breaker power electronics tributary unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207588689U true CN207588689U (en) | 2018-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721812346.7U Active CN207588689U (en) | 2017-12-22 | 2017-12-22 | A kind of superhigh voltage DC breaker power electronics tributary unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947535A (en) * | 2017-12-22 | 2018-04-20 | 清华四川能源互联网研究院 | A kind of superhigh voltage DC breaker power electronics tributary unit |
-
2017
- 2017-12-22 CN CN201721812346.7U patent/CN207588689U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947535A (en) * | 2017-12-22 | 2018-04-20 | 清华四川能源互联网研究院 | A kind of superhigh voltage DC breaker power electronics tributary unit |
| CN107947535B (en) * | 2017-12-22 | 2024-02-20 | 清华四川能源互联网研究院 | Power electronic branch unit of ultrahigh voltage direct current circuit breaker |
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