CN107086761A - A kind of two-way through-flow main branch power cell of dc circuit breaker - Google Patents
A kind of two-way through-flow main branch power cell of dc circuit breaker Download PDFInfo
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- CN107086761A CN107086761A CN201710342758.7A CN201710342758A CN107086761A CN 107086761 A CN107086761 A CN 107086761A CN 201710342758 A CN201710342758 A CN 201710342758A CN 107086761 A CN107086761 A CN 107086761A
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- circuit
- way
- main branch
- circuit breaker
- power cell
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/06—Circuits specially adapted for rendering non-conductive gas discharge tubes or equivalent semiconductor devices, e.g. thyratrons, thyristors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/209—Heat transfer by conduction from internal heat source to heat radiating structure
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Thermistors And Varistors (AREA)
Abstract
The present invention relates to a kind of two-way through-flow main branch power cell of dc circuit breaker, including IGBT module, radiator, diode, resistance, electric capacity, pressure strip and insulated tension pole；Arranged by multiple IGBT modules forward direction and be sequentially connected electrically and constitute positive series circuit and by multiple IGBT module reversed arrangements and be sequentially connected electrically and constitute differential concatenation circuit connected in series and be connected；The two ends of the insulated tension pole are connected with pressure strip respectively, the positive series circuit and differential concatenation circuit are each provided between two pressure strips, and the both sides of each IGBT module are respectively equipped with radiator, there are diode, resistance and electric capacity on each radiator, buffer loop RCD, the buffer loop RCD and an IGBT module parallel are constituted after the resistance is connected in parallel with electric capacity and with Diode series.The present invention can realize the two-way through-current capability of the main branch of dc circuit breaker, and improve the stability of high voltage DC breaker operation.
Description
Technical field
The present invention relates to a kind of power cell, and in particular to a kind of two-way through-flow main branch power list of dc circuit breaker
Member, belongs to high pressure, super high voltage direct current electricity transmission technical field.
Background technology
With the quickening that China's DC transmission engineering is built, high voltage DC breaker is to build multiterminal flexible direct current system
Core equipment, it is possible to increase the economy and reliability of system operation.Wherein main branch is the important set of high voltage DC breaker
Into part, normal steady state electric current flows through from main branch under normal circumstances, when circuit breaks down, can will be main by mechanical switch
Branch road is separated with circuit, and fault current passes through the transfer branch road in breaker.Therefore, it is badly in need of a kind of dc circuit breaker of design to use
Two-way through-flow main branch power cell, it is possible to achieve two-way through-current capability, is run steadily in the long term with meeting high voltage DC breaker
And high reliability request.
The content of the invention
The purpose of the present invention is：A kind of not only small volume, compact conformation, and direct current interruption convenient for installation and maintenance are provided
The two-way through-flow main branch power cell of device, can realize the two-way through-current capability of the main branch of dc circuit breaker, and improve height
The stability of dc circuit breaker operation is pressed, extra-high voltage direct-current breaker operation and high reliability request steadily in the long term is met；Meanwhile,
Can be by the way that the mutual connection in series-parallel arrangement of multiple power cells be realized into different electric currents, voltage class requirement.
In order to achieve the above object, the technical scheme is that：A kind of two-way through-flow main branch work(of dc circuit breaker
Rate unit, its innovative point is：Including IGBT module, radiator, diode, resistance, electric capacity, pressure strip and insulated tension pole；By
Multiple IGBT modules forward direction arrangement and be sequentially connected electrically and constitute positive series circuit, by multiple IGBT module reversed arrangements and according to
Secondary to electrically connect and constitute differential concatenation circuit, the positive series circuit is connected with differential concatenation circuit connected in series；The insulation is drawn
The two ends of bar are fixedly connected with pressure strip respectively, the positive series circuit and differential concatenation circuit be each provided at two pressure strips it
Between, and the both sides of positive series circuit and each IGBT module in differential concatenation circuit are respectively equipped with radiator, each
Diode, resistance and electric capacity are respectively connected with radiator, is connected after the resistance is connected in parallel with electric capacity and with Diode series
Buffer loop RCD is constituted, the buffer loop RCD is connected with an IGBT module parallel.
In the above-mentioned technical solutions, in addition to hold down assembly, it is described hold down assembly including push rod, axle sleeve, locking nut and
Disc spring, the push rod is threadedly coupled by locking nut with the pressure strip of insulated tension pole one end, and the disc spring is located at push rod and axle
Between set, and axle sleeve offsets with a close radiator.
In the above-mentioned technical solutions, the inner side of the pressure strip of the insulated tension pole other end be provided with cushion block, the cushion block with
A close radiator offsets.
In the above-mentioned technical solutions, the radiator is provided with the fin for being mutually integrated or being fixedly connected with it, two pole
Pipe is located at the side of fin and is fixedly connected by pressing plate and insulated bolt with fin.
In the above-mentioned technical solutions, the inner side of the pressure strip is provided with threaded sleeve, and the two ends of the insulated tension pole are distinguished
It is threadedly coupled with the threaded sleeve on the inside of pressure strip.
In the above-mentioned technical solutions, the insulated tension pole has four.
In the above-mentioned technical solutions, the resistance is connected in parallel by copper bar with electric capacity.
In the above-mentioned technical solutions, the push rod has flange, and one end of disc spring offsets with flange, the other end and axle sleeve
Offset.
The good effect that has of the present invention is：Using the two-way through-flow main branch power list of the dc circuit breaker of the present invention
After member, because the present invention includes IGBT module, radiator, diode, resistance, electric capacity, pressure strip and insulated tension pole；By multiple
IGBT module forward direction is arranged and is sequentially connected electrically and constitutes positive series circuit, by multiple IGBT module reversed arrangements and electric successively
Connect and constitute differential concatenation circuit, the positive series circuit is connected with differential concatenation circuit connected in series；The insulated tension pole
Two ends are fixedly connected with pressure strip respectively, and the positive series circuit and differential concatenation circuit are each provided between two pressure strips,
And the both sides of positive series circuit and each IGBT module in differential concatenation circuit are respectively equipped with radiator, each radiating
Diode, resistance and electric capacity are respectively connected with device, is connected and composed after the resistance is connected in parallel with electric capacity and with Diode series
Buffer loop RCD, the buffer loop RCD are connected with an IGBT module parallel；It is unidirectional due to diode of the present invention
Through-flow property, when connecting forward current, electric current is by each IGBT module, and each IGBT with positive series circuit
The buffer loop RCD of wired in parallel connection, and the buffer loop being connected with each IGBT module parallel of differential concatenation circuit
RCD is not through-flow, when turn-on reversal electric current, electric current by each IGBT module, and with differential concatenation circuit each
The buffer loop RCD of IGBT module parallel connection, and the buffering being connected with each IGBT module parallel of positive series circuit
Loop RCD is not through-flow, and then realizes the two-way through-current capability of main branch；IGBT module of the present invention is with radiator to crimp shape
Formula forms entirety, is not only simple in structure, compact, occupies little space, and convenient for installation and maintenance, can realize dc circuit breaker
The two-way through-current capability of main branch, and the stability of high voltage DC breaker operation is improved, meet extra-high voltage direct-current breaker long
Phase stable operation and high reliability request；Meanwhile, can by by multiple power cells mutual connection in series-parallel arrangement realize different electric currents,
Voltage class requirement.
Brief description of the drawings
Fig. 1 is a kind of structural representation of embodiment of the present invention；
Fig. 2 is a kind of dimensional structure diagram of embodiment of the present invention；
Fig. 3 is the electrical schematic diagram when present invention connects forward current；
Electrical schematic diagram when Fig. 4 is turn-on reversal electric current of the present invention；
Marked in figure：1-IGBT modules, 2- radiators, 3- diode D, 4- resistance R, 5- electric capacity C, 6- are held down assembly, 7- is compressed
Plate, 8- insulated tension poles, 9- push rods, 10- axle sleeves, 11- locking nuts, 12- fins, 13- pressing plates, 14- cushion blocks and 15- disc springs.
Embodiment
Below in conjunction with accompanying drawing and the embodiment provided, the present invention is further illustrated, but is not limited thereto.
As shown in Figure 1,2,3, 4, the two-way through-flow main branch power cell of a kind of dc circuit breaker, including IGBT module 1,
Radiator 2, diode 3, resistance 4, electric capacity 5, pressure strip 7 and insulated tension pole 8；By the positive arrangement of multiple IGBT modules 1 and successively
Electrically connect and constitute positive series circuit, by multiple reversed arrangements of IGBT module 1 and be sequentially connected electrically and constitute differential concatenation electricity
Road, the positive series circuit is connected with differential concatenation circuit connected in series；The two ends of the insulated tension pole 8 are solid with pressure strip 7 respectively
Fixed connection, the positive series circuit and differential concatenation circuit are each provided between two pressure strips 7, and positive series circuit and anti-
The both sides of each IGBT module 1 into series circuit are respectively equipped with radiator 2, and two are respectively connected with each radiator 2
Pole pipe 3, resistance 4 and electric capacity 5, after the resistance 4 is connected in parallel with electric capacity 5 and are connected in series composition buffer loop with diode 3
RCD, the buffer loop RCD is connected in parallel with an IGBT module 1.
As shown in Figure 1, 2, the adjacent IGBT module 1 of the present invention is realized by radiator 2 and electrically connected, so, not only can be with
Radiating effect is played, and reduces power cell length, compact conformation is easy to I＆ M.
As shown in Figure 1, 2, for the ease of assembling, and efficiency of assembling is improved, it is described present invention additionally comprises holding down assembly 6
Hold down assembly 6 include push rod 9, axle sleeve 10, locking nut 11 and disc spring 15, the push rod 9 pass through locking nut 11 with insulation draw
The pressure strip 7 of the one end of bar 8 is threadedly coupled, and the disc spring 15 is located between push rod 9 and axle sleeve 10, and axle sleeve 10 and close one
Radiator 2 offsets.
As shown in Figure 1, 2, for the ease of to radiator progress positioning assembling, the pressure strip 7 of the other end of insulated tension pole 8
Inner side be provided with cushion block 14, the cushion block 14 offsets with a close radiator 2.
As shown in Figure 1, 2, in order that structure of the present invention is simpler, compact, the radiator 2 be provided with its each other one
Body or the fin 12 being fixedly connected, the diode 3 are located at the side of fin 12 and by pressing plate 13 and insulated bolt and fin
12 are fixedly connected.
As shown in Figure 1, 2, for the ease of pressure strip 7 is located by connecting with insulated tension pole 8, the inner side of the pressure strip 7 is set
There is threaded sleeve, the two ends of the insulated tension pole 8 are threadedly coupled with the threaded sleeve on the inside of pressure strip 7 respectively.In order to further
Fastness between the two is improved, can further be fixed with bonding agent again after threaded connection.
As shown in Fig. 2 in order that obtaining stable property of the invention, the insulated tension pole 8 has four.
In order to improve efficiency of assembling, the resistance 4 is connected in parallel by copper bar with electric capacity 5.
In order that obtaining more reasonable structure of the present invention, the push rod 9 has flange, and one end of disc spring 15 offsets with flange,
The other end offsets with axle sleeve 10.
Due to the unidirectional through-flow property of diode 3 of the present invention, as shown in figure 3, when connecting forward current, electric current passes through
Each IGBT module 1, and the buffer loop RCD being connected in parallel with each IGBT module 1 of positive series circuit, and with
The buffer loop RCD that each IGBT module 1 of differential concatenation circuit is connected in parallel is not through-flow.
As shown in figure 4, when turn-on reversal electric current, electric current by each IGBT module 1, and with differential concatenation circuit
The buffer loop RCD that is connected in parallel of each IGBT module 1, and connect with each IGBT module parallel of positive series circuit
The buffer loop RCD connect is not through-flow, and then realizes the two-way through-current capability of main branch.
IGBT module of the present invention forms entirety with radiator to crimp form, is not only simple in structure, compact, takes empty
Between it is small and convenient for installation and maintenance, the two-way through-current capability of the main branch of dc circuit breaker can be realized, and improve HVDC
The stability of breaker operation, meets extra-high voltage direct-current breaker operation and high reliability request steadily in the long term；Meanwhile, it can pass through
The mutual connection in series-parallel arrangement of multiple power cells is realized into different electric currents, voltage class requirement.
Using the above-mentioned desirable embodiment according to the present invention as enlightenment, by above-mentioned description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property scope is not limited to the content on specification, it is necessary to its technical scope is determined according to right.
Claims (8)
1. a kind of two-way through-flow main branch power cell of dc circuit breaker, it is characterised in that：Including IGBT module（1）, radiating
Device（2）, diode（3）, resistance（4）, electric capacity（5）, pressure strip（7）And insulated tension pole（8）；By multiple IGBT modules（1）It is positive
Arrange and be sequentially connected electrically and constitute positive series circuit, by multiple IGBT modules（1）Reversed arrangement and it is sequentially connected electrically and structure
Into differential concatenation circuit, the positive series circuit is connected with differential concatenation circuit connected in series；The insulated tension pole（8）Two ends point
Not and pressure strip（7）It is fixedly connected, the positive series circuit and differential concatenation circuit are each provided at two pressure strips（7）Between,
And each IGBT module in positive series circuit and differential concatenation circuit（1）Both sides be respectively equipped with radiator（2）, it is each
Individual radiator（2）On be respectively connected with diode（3）, resistance（4）And electric capacity（5）, the resistance（4）With electric capacity（5）It is connected in parallel
Afterwards and and diode（3）It is connected in series composition buffer loop RCD, the buffer loop RCD and an IGBT module（1）Parallel connection is even
Connect.
2. the two-way through-flow main branch power cell of dc circuit breaker according to claim 1, it is characterised in that：Also include
Hold down assembly（6）, it is described to hold down assembly（6）Including push rod（9）, axle sleeve（10）, locking nut（11）And disc spring（15）, the top
Bar（9）Pass through locking nut（11）With insulated tension pole（8）The pressure strip of one end（7）Threaded connection, the disc spring（15）It is located at top
Bar（9）And axle sleeve（10）Between, and axle sleeve（10）With a close radiator（2）Offset.
3. the two-way through-flow main branch power cell of dc circuit breaker according to claim 1 or 2, it is characterised in that：Institute
State insulated tension pole（8）The pressure strip of the other end（7）Inner side be provided with cushion block（14）, the cushion block（14）With a close radiating
Device（2）Offset.
4. the two-way through-flow main branch power cell of dc circuit breaker according to claim 1, it is characterised in that：It is described to dissipate
Hot device（2）Provided with the fin for being mutually integrated or being fixedly connected with it（12）, the diode（3）It is located at fin（12）Side simultaneously
Pass through pressing plate（13）With insulated bolt and fin（12）It is fixedly connected.
5. the two-way through-flow main branch power cell of dc circuit breaker according to claim 1, it is characterised in that：The pressure
Tight plate（7）Inner side be provided with threaded sleeve, the insulated tension pole（8）Two ends respectively with pressure strip（7）The threaded sleeve of inner side
Threaded connection.
6. the two-way through-flow main branch power cell of dc circuit breaker according to claim 1 or 5, it is characterised in that：Institute
State insulated tension pole（8）There are four.
7. the two-way through-flow main branch power cell of dc circuit breaker according to claim 1, it is characterised in that：The electricity
Resistance（4）Pass through copper bar and electric capacity（5）It is connected in parallel.
8. the two-way through-flow main branch power cell of dc circuit breaker according to claim 2, it is characterised in that：The top
Bar（9）With flange, and disc spring（15）One end offseted with flange, the other end and axle sleeve（10）Offset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710342758.7A CN107086761A (en) | 2017-05-16 | 2017-05-16 | A kind of two-way through-flow main branch power cell of dc circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710342758.7A CN107086761A (en) | 2017-05-16 | 2017-05-16 | A kind of two-way through-flow main branch power cell of dc circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107086761A true CN107086761A (en) | 2017-08-22 |
Family
ID=59608061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710342758.7A Pending CN107086761A (en) | 2017-05-16 | 2017-05-16 | A kind of two-way through-flow main branch power cell of dc circuit breaker |
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| Country | Link |
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| CN (1) | CN107086761A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265985A (en) * | 2019-07-19 | 2019-09-20 | 常州博瑞电力自动化设备有限公司 | A kind of equivalent valve group of dc circuit breaker |
| CN111029913A (en) * | 2019-11-19 | 2020-04-17 | 广东电网有限责任公司 | Busbar cross structure of direct current circuit breaker |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204391676U (en) * | 2015-02-04 | 2015-06-10 | 华中科技大学 | A kind of capacitive buffer formula mixed high-voltage DC circuit breaker |
| CN106298756A (en) * | 2016-08-18 | 2017-01-04 | 平高集团有限公司 | A kind of IGBT series connection crimps encapsulation unit and uses the dc circuit breaker of this encapsulation unit |
| CN106611679A (en) * | 2015-10-23 | 2017-05-03 | 国网智能电网研究院 | Full-bridge cascaded high-voltage DC circuit breaker valve module |
| CN206712655U (en) * | 2017-05-16 | 2017-12-05 | 常州博瑞电力自动化设备有限公司 | A kind of two-way through-flow main branch power cell of dc circuit breaker |
-
2017
- 2017-05-16 CN CN201710342758.7A patent/CN107086761A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204391676U (en) * | 2015-02-04 | 2015-06-10 | 华中科技大学 | A kind of capacitive buffer formula mixed high-voltage DC circuit breaker |
| CN106611679A (en) * | 2015-10-23 | 2017-05-03 | 国网智能电网研究院 | Full-bridge cascaded high-voltage DC circuit breaker valve module |
| CN106298756A (en) * | 2016-08-18 | 2017-01-04 | 平高集团有限公司 | A kind of IGBT series connection crimps encapsulation unit and uses the dc circuit breaker of this encapsulation unit |
| CN206712655U (en) * | 2017-05-16 | 2017-12-05 | 常州博瑞电力自动化设备有限公司 | A kind of two-way through-flow main branch power cell of dc circuit breaker |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265985A (en) * | 2019-07-19 | 2019-09-20 | 常州博瑞电力自动化设备有限公司 | A kind of equivalent valve group of dc circuit breaker |
| CN111029913A (en) * | 2019-11-19 | 2020-04-17 | 广东电网有限责任公司 | Busbar cross structure of direct current circuit breaker |
| CN111029913B (en) * | 2019-11-19 | 2021-03-02 | 广东电网有限责任公司 | Busbar cross structure of direct current circuit breaker |
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