CN105281287B - A kind of direct-current breaker topology for having two-way blocking-up function based on thyristor - Google Patents
A kind of direct-current breaker topology for having two-way blocking-up function based on thyristor Download PDFInfo
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Abstract
A kind of bidirectional, dc breaker topology for having two-way blocking-up function based on thyristor, by main branch module (1), thyristor capacitive branch module (2), the first diode group (3) and the second diode group (4) composition；First leading-out terminal of main branch module (1) is connect with the anode of the first diode group (3), first leading-out terminal (5) of the tie point as the direct-current breaker topology；Second leading-out terminal of main branch module (1) is connect with the anode of the second diode group (4), second leading-out terminal (6) of the tie point as the direct-current breaker topology；The cathode of first diode group (3) is connect with the cathode of the second diode group (4), and is connected to tie point (7) with the first leading-out terminal of thyristor capacitive branch module (2)；Third leading-out terminal (8) of second leading-out terminal of thyristor capacitive branch module (2) as the direct-current breaker topology.
Description
Technical field
The present invention relates to a kind of direct-current breaker topologies.
Background technology
Fast DC Circuit Breaker is to ensure that direct current transmission and distribution system and DC grid system stablize the pass of safe and reliable operation
One of button apparatus.With AC system the difference is that the electric current of straight-flow system and natural zero-crossing point, therefore straight-flow system is not present
Middle no image of Buddha AC system equally utilizes the natural zero-crossing point of electric current to turn off, therefore the problem of cut-offfing of DC current is always one
It is worth the project of research.
Usually there are two types of modes for breaking direct current at present, the first is pure power electronics breaker, as ABB AB applies
Patent CN102870181A, turn off power electronic devices, direct disjunction DC current using high-power.Utilize this principle
The solid circuit breaker of manufacture, although the requirement of multiterminal flexible direct current system can be met in time, in normally
It is lost excessive, economy is poor.
Second is mixing Circuit breaker technology, i.e., on the basis of traditional exchange mechanical chopper, is assisted by increasing
Power electronic circuit, input current-limiting resistance with reduce short circuit current or on the DC current for cut-offfing arc gap superimposed oscillation electricity
Stream, cut-offs circuit when using current over-zero.The hybrid circuit breaker manufactured using this principle, has special want to mechanical switch
It asks, the more difficult requirement for meeting DC transmission system on break.
Invention content
The purpose of the present invention is the too high disadvantage of the dc circuit breaker cost currently based on IGBT technologies, propose that one kind is based on
The hybrid dc circuit breaker for having two-way blocking-up function of thyristor.The present invention have steady-state operation when be lost it is small, occur it is short
Without arc cutting when the failure of road, the features such as rapid is responded.
The bidirectional, dc breaker topology for having two-way blocking-up function is by main branch module, thyristor capacitive branch
Module, the first diode group and the second diode group composition.First leading-out terminal of main branch module and the first diode group
Anode connects, first leading-out terminal of the tie point as the direct-current breaker topology；The second of main branch module is drawn
Terminal is connect with the anode of the second diode group, second leading-out terminal of the tie point as the direct-current breaker topology；
The cathode of first diode group is connect with the cathode of the second diode group, and with the first exit of thyristor capacitive branch module
Son is connected to tie point；Third of second leading-out terminal of thyristor capacitive branch module as the direct-current breaker topology
Leading-out terminal.
The main branch module is made of mechanical switch and semiconductor devices group.One end of mechanical switch is as main branch
First leading-out terminal of module, the other end of mechanical switch are connect with the first leading-out terminal of semiconductor devices group, semiconductor device
Second leading-out terminal of second leading-out terminal of part group as main branch module.The semiconductor devices group of the main branch module
It is made of thyristor inverse parallel.
The thyristor capacitive branch module is by the first capacitance group, the second capacitance group, the first thyristor groups, the second brilliant lock
Pipe group, the first arrester and the second arrester composition.One end of first capacitance group as thyristor capacitive branch module first
The anode of leading-out terminal, the other end of the first capacitance group and the first thyristor groups is connected to the first tie point.Second capacitance group
One end is connect with the first tie point, and the other end of the second capacitance group is connect with the anode of the second thyristor groups, the second thyristor groups
Cathode connect with the cathode of the first thyristor groups, and as the second leading-out terminal of thyristor capacitive branch module；First keeps away
Thunder device is connected in parallel on the first capacitance both ends, and the second arrester is connected in parallel on the second capacitance both ends.
First capacitance group has been equipped with pre-charge circuit with the second capacitance group, to it into line precharge.
When not having direct-current short circuit failure, electric current is flowed through from main branch.When direct-current short circuit failure occurs, the brilliant lock
Pipe capacitive branch the first thyristor groups of module are connected, and the first capacitance group electric discharge, electric current is transferred to the thyristor capacitive branch,
The main branch semiconductor devices group current over-zero shutdown, subsequent mechanical switch starts to cut-off, when mechanical switch is cut-off completely
Afterwards, the described second thyristor groups conducting, the electric discharge of the second capacitance group, fault current flow through the first capacitance group, the second capacitance group, the
Two thyristor groups are flowed out from the third leading-out terminal of direct-current breaker topology.When the first capacitance group both end voltage is more than first to keep away
When thunder device group operation voltage or the second capacitance group both end voltage are more than the second arrester group operation voltage, lightning arrestor movement, electricity
Stream is dissipated by arrester, and direct fault current is reduced to zero.
The thyristor capacitive branch module also has another building form：By the first thyristor groups, the second thyristor
Group, capacitance group and arrester group composition.First exit of the anode of first thyristor groups as thyristor capacitive branch module
Son, the second leading-out terminal of the cathodes of the first thyristor groups as thyristor capacitive branch module；One end of capacitance group and brilliant lock
First leading-out terminal of pipe capacitive branch module connects, and the other end of capacitance group is connect with the anode of the second thyristor groups, and second
The cathode of thyristor groups is connect with the cathode of the first thyristor groups.Arrester is connected in parallel on the first thyristor groups both ends.
When thyristor capacitive branch uses this topological structure, the semiconductor devices group of the main branch module is by two
A IGBT differential concatenations composition.When not having direct-current short circuit failure, electric current is flowed through from main branch.When direct-current short circuit failure occurs
When, thyristor capacitive branch first thyristor groups of module conducting, electric current is transferred to the thyristor capacitive branch, institute
The main branch semiconductor devices group shutdown stated, subsequent mechanical switch starts to cut-off, after mechanical switch is cut-off completely, described the
Two thyristor groups are connected, and capacitance group electric discharge, fault current flows through capacitance group, the second thyristor groups, from direct-current breaker topology
Third leading-out terminal flows out.When capacitance group both end voltage is more than arrester group operation voltage, lightning arrestor movement, electric current is by keeping away
Thunder device dissipates, and direct fault current is reduced to zero.
Advantages of the present invention：
A. used semiconductor devices quantity is few, and pressure-resistant demand is low；
B. whole device passive device demand is few, small, light-weight；
C. thyristor technology is used, cost is reduced.
Description of the drawings
Fig. 1 is the electrical block diagram of the present invention；
Fig. 2 is the circuit diagram of the embodiment of the present invention 1；
Fig. 3 is the circuit diagram of the dc circuit breaker another kind realization method of the present invention.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific implementation mode the invention will be further described.
The direct-current breaker topology is by main branch module 1, thyristor capacitive branch module 2,3 He of the first diode group
Second diode group 4 forms；First leading-out terminal of main branch module 1 is connect with the anode of the first diode group 3, tie point
The first leading-out terminal 5 as the direct-current breaker topology；The second leading-out terminal and the second diode of main branch module 1
The anode connection of group 4, second leading-out terminal 6 of the tie point as the direct-current breaker topology；First diode group 3
Cathode is connect with the cathode of the second diode group 4, and is connected to and is connect with the first leading-out terminal of thyristor capacitive branch module 2
Point 7；Third leading-out terminal 8 of second leading-out terminal of thyristor capacitive branch module 2 as the direct-current breaker topology.
The main branch module is made of mechanical switch 11 and semiconductor devices group 14；One end conduct of mechanical switch 11
First leading-out terminal of main branch module, the other end of mechanical switch 11 connect with the first leading-out terminal of semiconductor devices group 14
It connects, the second leading-out terminal of the second leading-out terminal of semiconductor devices group 14 as main branch module 1.The main branch module
Semiconductor devices group 14 be made of two thyristor inverse parallels.
The thyristor capacitive branch module 2 is by the first capacitance group 21, the second capacitance group 23, the first thyristor groups 22,
Second thyristor groups 24, the first arrester 25 and the second arrester 26 composition.One end of first capacitance group is as thyristor capacitance
The anode of first leading-out terminal 27 of branch module 2, the other end of the first capacitance group and the first thyristor groups 22 is connected to first
Tie point 29.One end of second capacitance group 23 is connect with the first tie point 29, the other end of the second capacitance group 23 and the second brilliant lock
The anode of pipe group 22 connects, and the cathode of the second thyristor groups 22 is connect with the cathode of the first thyristor groups, and as thyristor electricity
Hold the second leading-out terminal 28 of branch module 2；First arrester 25 is connected in parallel on 23 both ends of the first capacitance, and the second arrester 26 is in parallel
At 23 both ends of the second capacitance.
As shown in figure 3, the thyristor capacitive branch module 2 also has another building form：By the first thyristor groups
31, the second thyristor groups 33, capacitance group 32 and arrester group 34 form.The anode of first thyristor groups 31 is as thyristor capacitance
The cathode of first leading-out terminal 27 of branch module 2, the first thyristor groups 31 draws as the second of thyristor capacitive branch module 2
Go out terminal 28；One end of capacitance group is connect with the first leading-out terminal 27 of thyristor capacitive branch module 2, the other end of capacitance group
It is connect with the anode of the second thyristor groups 33, the cathode of the second thyristor groups 33 is connect with the cathode of the first thyristor groups 31.It keeps away
Thunder device is connected in parallel on the first thyristor groups both ends.
When thyristor capacitive branch uses this topological structure shown in Fig. 3, the semiconductor of the main branch module 2
Device group 14 is made of thyristor inverse parallel.The semiconductor devices group 14 of the main branch module 2 is reversely gone here and there by two IGBT
Connection composition.
Fig. 2 show the specific embodiment in dc circuit breaker access AC line of the present invention, wherein dc circuit breaker
The first leading-out terminal 5 connect with one end of the inductance 32 on DC line, the other end of inductance 32 with current conversion station 33 just
Pole connects, and the second leading-out terminal 6 of dc circuit breaker connect with short dot 31, the third leading-out terminal 8 of dc circuit breaker and bears
DC bus connects.Main branch mould semiconductor devices group 14 in the block is made of two thyristor inverse parallels.
Claims (6)
1. a kind of direct-current breaker topology for having two-way blocking-up function based on thyristor, it is characterised in that：The direct current
Breaker topology is by main branch module (1), thyristor capacitive branch module (2), the first diode group (3) and the second diode group
(4) it forms；First leading-out terminal of main branch module (1) is connect with the anode of the first diode group (3), and tie point is as institute
The first leading-out terminal (5) for the direct-current breaker topology stated；Second leading-out terminal of main branch module (1) and the second diode group
(4) anode connection, second leading-out terminal (6) of the tie point as the direct-current breaker topology；First diode group
(3) cathode is connect with the cathode of the second diode group (4), and with the first leading-out terminal of thyristor capacitive branch module (2)
It is connected to tie point (7)；Second leading-out terminal of thyristor capacitive branch module (2) is as the direct-current breaker topology
Third leading-out terminal (8)；
When not having direct-current short circuit failure, electric current is flowed through from main branch module (1)；It is described when direct-current short circuit failure occurs
The first thyristor groups (22) conducting in thyristor capacitive branch module (2), the first capacitance group (21) electric discharge, electric current are transferred to institute
The thyristor capacitive branch module (2) stated, semiconductor devices group current over-zero turns off in the main branch module (1), then
Mechanical switch (11) starts to cut-off, after mechanical switch (11) is cut-off completely, the second thyristor groups (24) conducting, and the second capacitance group
(23) it discharges, fault current flows through the first capacitance group (21), the second capacitance group (23), and the second thyristor groups (24) are broken from direct current
The third leading-out terminal of road device topology flows out；When the first capacitance group (21) both end voltage is more than the first arrester group (25) action electricity
When pressure or the second capacitance group (23) both end voltage are more than second arrester group (26) operation voltage, lightning arrestor movement, electric current leads to
Arrester dissipation is crossed, direct fault current is reduced to zero.
2. direct-current breaker topology described in accordance with the claim 1, it is characterised in that：The main branch module is by mechanical switch
(11) it is formed with semiconductor devices group (14)；First leading-out terminal of the one end of mechanical switch (11) as main branch module, machine
The other end of tool switch (11) is connect with the first leading-out terminal of semiconductor devices group (14), and the second of semiconductor devices group (14)
Second leading-out terminal of the leading-out terminal as main branch module (1).
3. direct-current breaker topology described in accordance with the claim 1, it is characterised in that：The thyristor capacitive branch module
(2) by the first capacitance group (21), the second capacitance group (23), the first thyristor groups (22), the second thyristor groups (24), first is lightning-arrest
Device (25) and the second arrester (26) composition, one end of the first capacitance group is drawn as the first of thyristor capacitive branch module (2)
Go out terminal (27), the anode of the other end and the first thyristor groups (22) is connected to the first tie point (29)；Second capacitance group (23)
One end is connect with the first tie point (29), and the other end is connect with the anode of the second thyristor groups (24), the second thyristor groups (24)
Cathode connect with the cathode of the first thyristor groups, and as the second leading-out terminal (28) of thyristor capacitive branch module (2)；
First arrester (25) is connected in parallel on the both ends of the first capacitance group (21), and the second arrester (26) is connected in parallel on the second capacitance group (23)
Both ends.
4. a kind of direct-current breaker topology, it is characterised in that：The direct-current breaker topology is by main branch module (1), brilliant lock
Pipe capacitive branch module (2), the first diode group (3) and the second diode group (4) composition；The first of main branch module (1) is drawn
Go out terminal to connect with the anode of the first diode group (3), tie point is drawn as the first of the direct-current breaker topology
Terminal (5)；Second leading-out terminal of main branch module (1) is connect with the anode of the second diode group (4), and tie point is as institute
The second leading-out terminal (6) for the direct-current breaker topology stated；The cathode of first diode group (3) and the second diode group (4)
Cathode connects, and is connected to tie point (7) with the first leading-out terminal of thyristor capacitive branch module (2)；Thyristor capacitance branch
Third leading-out terminal (8) of second leading-out terminal of road module (2) as the direct-current breaker topology；
The thyristor capacitive branch module (2) is by the first thyristor groups (31), the second thyristor groups (33), capacitance group
(32), arrester group (34) forms；The anode of first thyristor groups (31) draws as the first of thyristor capacitive branch module (2)
Go out terminal (27), the second leading-out terminal (28) of the cathodes of the first thyristor groups (31) as thyristor capacitive branch module (2)；
One end of capacitance group is connect with the first leading-out terminal (27) of thyristor capacitive branch module (2), the other end and the second thyristor
The anode of group (33) connects, and the cathode of the second thyristor groups (33) is connect with the cathode of the first thyristor groups (31)；Arrester is simultaneously
It is associated in the first thyristor groups both ends.
5. direct-current breaker topology according to claim 4, it is characterised in that：It partly leads main branch module (1)
Body device group (14) is made of thyristor inverse parallel.
6. direct-current breaker topology according to claim 4, it is characterised in that：It partly leads main branch module (1)
Body device group (14) is made of two IGBT differential concatenations.
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| CN201510690563.2A CN105281287B (en) | 2015-10-22 | 2015-10-22 | A kind of direct-current breaker topology for having two-way blocking-up function based on thyristor |
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| CN105281287B true CN105281287B (en) | 2018-08-07 |
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| CN106711931B (en) * | 2016-12-29 | 2021-01-01 | 全球能源互联网研究院 | Direct current breaker and control method thereof |
| CN107947131B (en) * | 2017-11-30 | 2019-03-19 | 天津大学 | Fault insulation and resume method based on micro- loss combined machine formula dc circuit breaker |
| CN108683158B (en) * | 2018-04-26 | 2019-11-15 | 中国科学院电工研究所 | A kind of dc circuit breaker |
| CN109659911A (en) * | 2018-12-13 | 2019-04-19 | 华北电力大学 | A kind of failure self-cleaning MMC topology suitable for multiterminal element and DC grid |
| CN112968420B (en) * | 2021-02-18 | 2022-09-27 | 天津大学 | Thyristor type hybrid direct current circuit breaker and control method thereof |
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| CN103474983A (en) * | 2013-08-20 | 2013-12-25 | 国家电网公司 | High voltage and great current direct-current circuit breaker and control method thereof |
| CN103647263A (en) * | 2013-12-04 | 2014-03-19 | 中国科学院电工研究所 | DC circuit breaker based on half-control electric-power electronic devices |
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