CN103441490B - A kind of MTDC transmission system dc circuit breaker and control method thereof - Google Patents
A kind of MTDC transmission system dc circuit breaker and control method thereof Download PDFInfo
- Publication number
- CN103441490B CN103441490B CN201310359389.4A CN201310359389A CN103441490B CN 103441490 B CN103441490 B CN 103441490B CN 201310359389 A CN201310359389 A CN 201310359389A CN 103441490 B CN103441490 B CN 103441490B
- Authority
- CN
- China
- Prior art keywords
- igct
- diode
- reactance
- resistance
- circuit breaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000005540 biological transmission Effects 0.000 title claims abstract description 20
- 230000000903 blocking effect Effects 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The open a kind of MTDC transmission system dc circuit breaker of the present invention and control method thereof, chopper includes spark gap, master switch branch road and auxiliary switching circuit；Spark gap and master switch branch circuit parallel connection；Master switch props up the in series of the identical interruption units of two groups of structures of route, is often organizing interruption units two ends, is being arranged in parallel the auxiliary switching circuit that structure is identical.Auxiliary switching circuit all includes IGCT reactance series arm, diode, electric capacity and resistance；Diodes in parallel is at interruption units two ends, and IGCT reactance series arm and electric capacity are connected in diode two ends over the ground, and pass through resistance eutral grounding.The present invention makes DC current zero passage by its disjunction by the method injecting reverse current.The present invention uses half control type device IGCT to constitute direct-current breaker topology, can be applicable to high-voltage great-current occasion, and cost is relatively low, controls simple, and autgmentability is high.
Description
Technical field
The invention belongs to electric and electronic technical field, be specifically related to a kind of MTDC transmission system dc circuit breaker and control thereof
Method.
Background technology
Multi-terminal HVDC transmission technology is capable of multiple feed, many drop points are subject to electricity, is a kind of flexible, quick, economical
Power transmission mode, meets the growth requirement of power industry.Dc circuit breaker is a kind of particularly significant in multi-terminal HVDC transmission engineering
Equipment, use dc circuit breaker just can give full play to feature and the advantage of MTDC transmission system in MTDC transmission system,
But dc circuit breaker breaking direct current process to bear voltage high, need the energy absorbed the biggest, it is desirable to cut-off speed
Degree is fast, and reliability is high, and needs to cut-off bidirectional current.At present, some scholars are studying the direct current interruption of its correspondence
Device.
Summary of the invention
For the deficiencies in the prior art, the present invention proposes a kind of MTDC transmission system dc circuit breaker and control method thereof,
Core is to use the mode disjunction DC current of superposition reverse current based on current commutation principle, it is achieved that two-way point of electric current
Disconnected, the development for dc circuit breaker provides a fine technical strategies.
A kind of MTDC transmission system dc circuit breaker that the present invention provides, it is characterised in that include spark gap, master switch
Branch road and auxiliary switching circuit；Described spark gap and described master switch branch circuit parallel connection；
Described master switch props up the first identical interruption units of two groups of structures of route and the second interruption units is in series；Described
One interruption units includes disconnecting switch BRK11, AC circuit breaker BRK12 and first thyristor valve section of series connection；Described
Second interruption units includes disconnecting switch BRK21, AC circuit breaker BRK22 and second thyristor valve section of series connection；
At described first interruption units two ends the first auxiliary switching circuit in parallel；In described second interruption units two ends parallel connection
Two auxiliary switching circuits；
Described first auxiliary switching circuit includes IGCT T13-reactance L1 series arm, diode D12, electric capacity C1
With resistance R1；Described diode D12 is connected in parallel on described first interruption units two ends；Described IGCT T13-reactance L1
Series arm and described electric capacity C1 are connected in described diode D12 two ends over the ground, and by described resistance R1 ground connection；
Described second auxiliary switching circuit includes IGCT T23-reactance L2 series arm, diode D22, electric capacity C2
With resistance R2；Described diode D22 is connected in parallel on described second interruption units two ends；Described IGCT T23-reactance L2
Series arm and described electric capacity C2 are connected in described diode D22 two ends over the ground, and by described resistance R2 ground connection.
Wherein, described first thyristor valve section includes IGCT T11, IGCT T12, diode D11 and resistance R3；
Diode D11 is in parallel with described IGCT T11 and described IGCT T12 respectively after connecting with described resistance R3；Described
IGCT T11 and IGCT T12 is inverse parallel structure；Described diode D11 is in opposite direction with described diode D12；
Described second thyristor valve section includes IGCT T21, IGCT T22, diode D21 and resistance R4；Two poles
Pipe D21 is in parallel with described IGCT T21 and described IGCT T22 respectively after connecting with described resistance R4；Described brilliant lock
Pipe T21 and IGCT T22 is inverse parallel structure；Described diode D21 is in opposite direction with described diode D22.
Wherein, in described first auxiliary switching circuit, the anode of described IGCT T13 is negative with described diode D12's
Pole connects, and its negative electrode is connected with one end of described reactance L1；Described electric capacity C1 one end is with described diode D12 just
Pole connects；The described electric capacity C1 other end is connected with the other end of described reactance L1；Described reactance L1 passes through described resistance
R1 ground connection；
In described second auxiliary switching circuit, the anode of described IGCT T23 is connected with the negative pole of described diode D22,
Its negative electrode is connected with one end of described reactance L2；Described electric capacity C2 one end is connected with the positive pole of described diode D22；
The described electric capacity C2 other end is connected with the other end of described reactance L2；Described reactance L2 passes through described resistance R2 ground connection.
Wherein, the number of the described diode D12 in described first auxiliary switching circuit and described IGCT T13 is
Two or more；
Described diode D22 in described second auxiliary switching circuit and the number of described IGCT T23 be two with
On.
Wherein, the diode D1 in described first auxiliary switching circuit and the diode in described second auxiliary switching circuit
D2 negative pole connects, and positive pole is connected with the current-limiting reactor in circuit.
The control method of a kind of MTDC transmission system dc circuit breaker that the present invention provides based on another object, it improves it
Place is, described control method comprises the steps:
Opening process:
(1) by dc circuit breaker line attachment, and IGCT T11, IGCT T12, IGCT T21, crystalline substance are kept
Brake tube T22, IGCT T13 and IGCT T23 are blocking, disconnecting switch BRK11, disconnecting switch BRK21,
AC circuit breaker BRK12 and AC circuit breaker BRK22 is off-state；
(2) disconnecting switch BRK21 in the second interruption units, then Guan Bi AC circuit breaker BRK22 are closed；
(3) the IGCT T21 of triggering and conducting the second interruption units；
(4) close disconnecting switch BRK11 in the first interruption units, then Guan Bi AC circuit breaker BRK12, and lead
Logical IGCT T11 therein；
Turn off process:
1. the IGCT T23 in triggering and conducting the second auxiliary switching circuit；
2. described disconnecting switch BRK21 is disconnected；
3. spark gap absorbs energy；
4. described AC circuit breaker BRK22, disconnecting switch BRK11 and AC circuit breaker BRK12 are disconnected.
The control method of a kind of MTDC transmission system dc circuit breaker that the present invention provides based on another object, it improves it
Place is, described control method comprises the steps:
Opening process:
(1) by dc circuit breaker line attachment, and IGCT T11, IGCT T12, IGCT T21, crystalline substance are kept
Brake tube T22, IGCT T13 and IGCT T23 are blocking, disconnecting switch BRK11, disconnecting switch BRK21
AC circuit breaker BRK12 and AC circuit breaker BRK22 is off-state；
(2) disconnecting switch BRK11 in the first interruption units, then Guan Bi AC circuit breaker BRK12 are closed；
(3) the IGCT T12 of triggering and conducting the first interruption units；
(4) close disconnecting switch BRK21 in the second interruption units, then Guan Bi AC circuit breaker BRK22, and lead
Logical IGCT T22 therein；
Turn off process:
1. the IGCT T13 in triggering and conducting the first auxiliary switching circuit；
2. described disconnecting switch BRK11 is disconnected；
3. spark gap absorbs energy；
4. described AC circuit breaker BRK12, disconnecting switch BRK21 and AC circuit breaker BRK22 are disconnected.
Compared with the prior art, the invention have the benefit that
Present invention incorporates forced commutation thought and electric current transfer disjunction thought, it is achieved that dividing of hicap DC current
Disconnected.
The present invention uses half control type device IGCT to constitute direct-current breaker topology, utilizes half control type device to replace the complete of costliness
Control type device, on-state loss is low, and manufacturing cost and cooling requirements are relatively low, technology maturation.
Present invention can apply to high-voltage great-current occasion, topological structure is the compactest, controls simple, and extensibility is high.
Present invention application quick isolation switch, it is achieved that multi-state bidirectional, dc electric current disjunction, breaking course is quick without arc.
The present invention utilizes auxiliary switching circuit to achieve the soft open-minded of dc circuit breaker, reduces power device opening process institute
The stress born.
The invention belongs to mixed type high voltage DC breaker, combine mechanical type dc circuit breaker and solid-state direct-current chopper two
The advantage of person, research and development difficulty is relatively small, it is adaptable to various MTDC transmission systems.
The present invention utilizes circuit to charge for capacitor in auxiliary switching circuit, is not required to additionally increase charger, thus reduces
Equipment room electrical isolation difficulty, reduces floor space and cost, it is easy to through engineering approaches realizes.
Accompanying drawing explanation
The dc circuit breaker structure chart that Fig. 1 provides for the present invention.
The waveform diagram of the disjunction fault current that Fig. 2 provides for the present invention.
The waveform diagram of the disjunction load current that Fig. 3 provides for the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described in further detail.
A kind of MTDC transmission system dc circuit breaker that the present embodiment proposes, it is followed by by two ends series connection current-limiting reactor
Entering electrical network, its structure is as it is shown in figure 1, include spark gap, master switch branch road and auxiliary switching circuit；Wherein, spark gap
With master switch branch circuit parallel connection.
In figure, master switch branch road includes the first interruption units and the second interruption units that two groups of structures are identical.First cutout is single
Unit includes quick isolation switch BRK11, the high pressure SF of series connection6Chopper BRK12 and the first thyristor valve section；First
Thyristor valve section includes IGCT T11, IGCT T12, diode D11 and resistance R3；Diode D11 and resistance
R3 is in parallel with IGCT T11 and IGCT T12 respectively after connecting；IGCT T11 and IGCT T12 is inverse parallel knot
Structure；Diode D11 is in opposite direction with diode D12.Second interruption units include series connection disconnecting switch BRK21,
High pressure SF6Chopper BRK22 and the second thyristor valve section；Second thyristor valve section includes IGCT T21, IGCT
T22, diode D21 and resistance R4；Diode D21 connect with resistance R4 after respectively with IGCT T21 and IGCT
T22 is in parallel；IGCT T21 and IGCT T22 is inverse parallel structure；Diode D21 and diode D22 direction phase
Instead.
The present embodiment is at the first interruption units two ends first auxiliary switching circuit in parallel, in the second interruption units two ends parallel connection the
Two auxiliary switching circuits.
As it is shown in figure 1, the first auxiliary switching circuit include IGCT T13-reactance L1 series arm, diode D12,
Electric capacity C1 and resistance R1；Diode D12 is connected in parallel on the first interruption units two ends；IGCT T13-reactance L1 series connection
Road and electric capacity C1 are connected in diode D12 two ends over the ground, and by resistance R1 ground connection.
Second auxiliary switching circuit includes IGCT T23-reactance L2 series arm, diode D22, electric capacity C2 and electricity
Resistance R2；Described diode D22 is connected in parallel on described second interruption units two ends；Described IGCT T23-reactance L2 connects
Branch road and described electric capacity C2 are connected in described diode D22 two ends over the ground, and by described resistance R2 ground connection.
In the first auxiliary switching circuit, diode D12 includes that the diode of at least two series aiding connection is (only with one in figure
Individual sign), it is connected in parallel on the first interruption units two ends, direction and the diode D11 direction phase in the first thyristor valve section
Instead.IGCT T13 is also made up of the Thyristors in series of at least two, in IGCT T13 anode and the first interruption units
IGCT T12 anode connects, and the negative electrode of IGCT T13 is connected with reactance L1；The other end of reactance L1 and electric capacity C1
One end connect, the other end of electric capacity C1 is connected with disconnecting switch BRK11；Pass through between reactance L1 and electric capacity C1
Resistance R1 ground connection, R1 plays metering function, and reactance L1 plays suppression short circuit current effect.
In the second auxiliary switching circuit, diode D22 includes that the diode of at least two series aiding connection is (only with one in figure
Individual sign), it is connected in parallel on the second interruption units two ends, direction and the diode D21 direction phase in the second thyristor valve section
Instead.IGCT T23 is also made up of the Thyristors in series of at least two, IGCT T23 anode and disconnecting switch BRK21
Connecting, the negative electrode of IGCT T23 is connected with reactance L2；The other end of reactance L2 is connected with one end of electric capacity C2, electricity
IGCT T22 anode in the other end of appearance C2 and the second interruption units connects；Pass through between reactance L2 and electric capacity C2
Resistance R2 ground connection, R2 plays metering function, and reactance L2 plays suppression short circuit current effect.
In the present embodiment, the diode D1 in the first auxiliary switching circuit and two poles in described second auxiliary switching circuit
Pipe D2 negative pole connects, and positive pole is connected with the current-limiting reactor in circuit.
Corresponding, the present embodiment proposes the control method of a kind of MTDC transmission system dc circuit breaker, due to this chopper
Structure is full symmetric and can realize two-way disjunction, therefore takes forward and do principle explanation, opposite direction can analogy, electricity shown in accompanying drawing
Flow path direction IdcPositive direction for electric current.For disengagement failure short circuit current and the different operating modes of cut-out load current, this is disconnected
Road device operation principle is identical, therefore does unified explanation.Dc circuit breaker is divided into two processes that turn on and off, as described below:
Opening process:
Electric capacity C1 and C2 utilizes circuit to pass through auxiliary switching circuit C1-R and C2-R to charge and keep normal electriferous state,
Voltage stabilization is at system nominal voltage levvl.When opening, first Guan Bi quick isolation switch BRK21, then closes SF6
Chopper BRK22, then electric current is circulated by D12-BRK21-BRK22-D21-R2 branch road, triggers after current stabilization
Conducting thyristor T21, owing to D21-R2 branch impedance can be shifted to T21 branch road rapidly much larger than T21 branch road, electric current,
Close BRK11 afterwards, be closed again BRK12, triggering and conducting IGCT T11, also due to BRK11-BRK12-T11
Branch impedance is much smaller than D12 branch road, and electric current can shift to BRK11-BRK12-T11 branch road rapidly, stablizes after current stream
Leading in BRK11-BRK12-T11-BRK21-BRK22-T21 branch road, so far chopper is fully immersed operation, opens
Journey terminates.
Turn off process:
When direct current interruption needs action line disconnection electric current, triggering and conducting T23, due to the effect of capacitance voltage, electric capacity
Device C2 produces rapidly an arteries and veins reverse with circuit forward current in T21-BRK21-BRK21-T23-inductance L2 loop
Rush electric current so that current over-zero in IGCT T21, provide backward voltage, IGCT T21 owing to D22 turns on to T21
Turning off, now Quick mechanical disconnecting switch BRK21 is at no current situation action separating brake, after blocking ability to be restored,
BRK22 separating brake；After BRK21 recovers blocking ability, electric current transfers to BRK11-BRK12-T11-T23-L2-C2
Branch road, charges to capacitor C2 simultaneously, electric capacity C2 voltage from upper just lower negative become upper negative under just, with direction as shown phase
Instead.When this branch voltage reaches spark gap MOV operation voltage, MOV action, when capacitor C2 charging current is
When zero, whole short circuit currents have been transferred to MOV branch road, and IGCT T23 turns off, BRK11 and BRK12 separating brake,
The energy stored in MOV absorption circuit and current-limiting inductance, treats that spark gap branch current is gradually decrease to 0, and spark gap is extensive
Multiple blocking state, then the complete disjunction of current through line circuit breaker current, so far turn off process terminates.
As in figure 2 it is shown, be the waveform diagram of disjunction fault current.By to the dc circuit breaker that the present embodiment proposes
Manipulation, it can be seen that through 1.4ms main branch DC current disjunction, ultimate current is transferred to spark gap to be carried out
Energy dissipation.
As it is shown on figure 3, be the waveform diagram of disjunction load current.By to the dc circuit breaker that the present embodiment proposes
Manipulation, it can be seen that through 1.3ms main branch DC current disjunction, ultimate current is transferred to spark gap to be carried out
Energy dissipation.
Finally should be noted that: above example only in order to illustrate that technical scheme is not intended to limit, although
Being described in detail the present invention with reference to above-described embodiment, those of ordinary skill in the field are it is understood that still
The detailed description of the invention of the present invention can be modified or equivalent, and appointing without departing from spirit and scope of the invention
What amendment or equivalent, it all should be contained in the middle of scope of the presently claimed invention.
Claims (6)
1. a MTDC transmission system dc circuit breaker, it is characterised in that include that spark gap, master switch prop up
Road and auxiliary switching circuit；Described spark gap and described master switch branch circuit parallel connection；
Described master switch props up the first identical interruption units of two groups of structures of route and the second interruption units series connection structure
Become；Described first interruption units includes disconnecting switch BRK11 of series connection, AC circuit breaker BRK12 and first
Thyristor valve section；Described second interruption units includes disconnecting switch BRK21 of series connection, AC circuit breaker BRK22
With the second thyristor valve section；
At described first interruption units two ends the first auxiliary switching circuit in parallel；At described second interruption units two
Hold the second auxiliary switching circuit in parallel；
Described first auxiliary switching circuit includes IGCT T13-reactance L1 series arm, diode D12, electric capacity
C1 and resistance R1；Described diode D12 is connected in parallel on described first interruption units two ends；Described IGCT T13-
Reactance L1 series arm and described electric capacity C1 are connected in described diode D12 two ends over the ground, and by described
Resistance R1 ground connection；
Described second auxiliary switching circuit includes IGCT T23-reactance L2 series arm, diode D22, electric capacity
C2 and resistance R2；Described diode D22 is connected in parallel on described second interruption units two ends；Described IGCT T23-
Reactance L2 series arm and described electric capacity C2 are connected in described diode D22 two ends over the ground, and by described
Resistance R2 ground connection；
Described first thyristor valve section includes IGCT T11, IGCT T12, diode D11 and resistance R3；
Diode D11 is in parallel with described IGCT T11 and described IGCT T12 respectively after connecting with described resistance R3；
Described IGCT T11 and IGCT T12 is inverse parallel structure；Described diode D11 and described diode D12
In opposite direction；
Described second thyristor valve section includes IGCT T21, IGCT T22, diode D21 and resistance R4；
Diode D21 is in parallel with described IGCT T21 and described IGCT T22 respectively after connecting with described resistance R4；
Described IGCT T21 and IGCT T22 is inverse parallel structure；Described diode D21 and described diode D22
In opposite direction.
2. dc circuit breaker as claimed in claim 1, it is characterised in that described first auxiliary switching circuit
In, the anode of described IGCT T13 is connected with the negative pole of described diode D12, its negative electrode and described reactance L1
One end connect；Described electric capacity C1 one end is connected with the positive pole of described diode D12；Described electric capacity C1 another
End is connected with the other end of described reactance L1；Described reactance L1 passes through described resistance R1 ground connection；
In described second auxiliary switching circuit, the anode of described IGCT T23 is connected with the negative pole of described diode D22,
Its negative electrode is connected with one end of described reactance L2；Described electric capacity C2 one end connects with the positive pole of described diode D22
Connect；The described electric capacity C2 other end is connected with the other end of described reactance L2；Described reactance L2 passes through described resistance
R2 ground connection.
3. dc circuit breaker as claimed in claim 2, it is characterised in that in described first auxiliary switching circuit
The number of described diode D12 and described IGCT T13 is two or more；
Described diode D22 in described second auxiliary switching circuit and the number of described IGCT T23 be two with
On.
4. the dc circuit breaker as described in claim 1-3 is arbitrary, it is characterised in that described first auxiliary switch
Diode D12 negative pole in circuit and the diode D22 negative pole in described second auxiliary switching circuit connect, and two
Pole pipe D22 positive pole is connected with the current-limiting reactor 2 in circuit.
5. the control method of a MTDC transmission system dc circuit breaker, it is characterised in that
Described MTDC transmission system dc circuit breaker, including spark gap, master switch branch road and auxiliary switching circuit；
Described spark gap and described master switch branch circuit parallel connection；
Described master switch props up the first identical interruption units of two groups of structures of route and the second interruption units series connection structure
Become；Described first interruption units includes that disconnecting switch BRK11 of series connection, AC circuit breaker BRK12 and first are brilliant
Gate tube valve section；Described second interruption units include series connection disconnecting switch BRK21, AC circuit breaker BRK22 and
Second thyristor valve section；
At described first interruption units two ends the first auxiliary switching circuit in parallel；At described second interruption units two
Hold the second auxiliary switching circuit in parallel；
Described first auxiliary switching circuit includes IGCT T13-reactance L1 series arm, diode D12, electric capacity
C1 and resistance R1；Described diode D12 is connected in parallel on described first interruption units two ends；Described IGCT T13-electricity
Anti-L1 series arm and described electric capacity C1 are connected in described diode D12 two ends over the ground, and by described resistance
R1 ground connection；
Described second auxiliary switching circuit includes IGCT T23-reactance L2 series arm, diode D22, electric capacity
C2 and resistance R2；Described diode D22 is connected in parallel on described second interruption units two ends；Described IGCT T23-electricity
Anti-L2 series arm and described electric capacity C2 are connected in described diode D22 two ends over the ground, and by described resistance
R2 ground connection；
Wherein, described first thyristor valve section includes IGCT T11, IGCT T12, diode D11 and resistance
R3；Diode D11 connect with described resistance R3 after respectively with described IGCT T11 and described IGCT T12 also
Connection；Described IGCT T11 and IGCT T12 is inverse parallel structure；Described diode D11 and described diode
D12 is in opposite direction；
Described second thyristor valve section includes IGCT T21, IGCT T22, diode D21 and resistance R4；Two
Pole pipe D21 is in parallel with described IGCT T21 and described IGCT T22 respectively after connecting with described resistance R4；Described
IGCT T21 and IGCT T22 is inverse parallel structure；Described diode D21 and described diode D22 direction phase
Instead；
Wherein, in described first auxiliary switching circuit, the anode of described IGCT T13 and described diode D12
Negative pole connect, its negative electrode is connected with one end of described reactance L1；Described electric capacity C1 one end and described diode
The positive pole of D12 connects；The described electric capacity C1 other end is connected with the other end of described reactance L1；Described reactance L1
By described resistance R1 ground connection；
In described second auxiliary switching circuit, the anode of described IGCT T23 and the negative pole of described diode D22
Connecting, its negative electrode is connected with one end of described reactance L2；Described electric capacity C2 one end is with described diode D22's
Positive pole connects；The described electric capacity C2 other end is connected with the other end of described reactance L2；Described reactance L2 passes through institute
State resistance R2 ground connection；
Described control method comprises the steps:
Opening process:
(1) by dc circuit breaker line attachment, and keep IGCT T11, IGCT T12, IGCT T21,
IGCT T22, IGCT T13 and IGCT T23 are blocking, disconnecting switch BRK11, disconnecting switch
BRK21, AC circuit breaker BRK12 and AC circuit breaker BRK22 are off-state；
(2) disconnecting switch BRK21 in the second interruption units, then Guan Bi AC circuit breaker BRK22 are closed；
(3) the IGCT T21 of triggering and conducting the second interruption units；
(4) disconnecting switch BRK11 in the first interruption units, then Guan Bi AC circuit breaker BRK12 are closed,
And turn on IGCT T11 therein；
Turn off process:
1. the IGCT T23 in triggering and conducting the second auxiliary switching circuit；
2. described disconnecting switch BRK21 is disconnected；
3. spark gap absorbs energy；
4. described AC circuit breaker BRK22, disconnecting switch BRK11 and AC circuit breaker BRK12 are disconnected.
6. the control method of a MTDC transmission system dc circuit breaker, it is characterised in that described multiterminal are straight
Streaming system dc circuit breaker, including spark gap, master switch branch road and auxiliary switching circuit；Described spark gap
With described master switch branch circuit parallel connection；
Described master switch props up the first identical interruption units of two groups of structures of route and the second interruption units series connection structure
Become；Described first interruption units includes disconnecting switch BRK11 of series connection, AC circuit breaker BRK12 and first
Thyristor valve section；Described second interruption units includes disconnecting switch BRK21 of series connection, AC circuit breaker BRK22
With the second thyristor valve section；
At described first interruption units two ends the first auxiliary switching circuit in parallel；At described second interruption units two
Hold the second auxiliary switching circuit in parallel；
Described first auxiliary switching circuit includes IGCT T13-reactance L1 series arm, diode D12, electric capacity
C1 and resistance R1；Described diode D12 is connected in parallel on described first interruption units two ends；Described IGCT T13-
Reactance L1 series arm and described electric capacity C1 are connected in described diode D12 two ends over the ground, and by described
Resistance R1 ground connection；
Described second auxiliary switching circuit includes IGCT T23-reactance L2 series arm, diode D22, electric capacity
C2 and resistance R2；Described diode D22 is connected in parallel on described second interruption units two ends；Described IGCT T23-
Reactance L2 series arm and described electric capacity C2 are connected in described diode D22 two ends over the ground, and by described
Resistance R2 ground connection；
Wherein, described first thyristor valve section includes IGCT T11, IGCT T12, diode D11 and electricity
Resistance R3；Diode D11 connect with described resistance R3 after respectively with described IGCT T11 and described IGCT T12
In parallel；Described IGCT T11 and IGCT T12 is inverse parallel structure；Described diode D11 and described two poles
Pipe D12 is in opposite direction；
Described second thyristor valve section includes IGCT T21, IGCT T22, diode D21 and resistance R4；Two
Pole pipe D21 is in parallel with described IGCT T21 and described IGCT T22 respectively after connecting with described resistance R4；Described
IGCT T21 and IGCT T22 is inverse parallel structure；Described diode D21 and described diode D22 direction phase
Instead；
Wherein, in described first auxiliary switching circuit, the anode of described IGCT T13 and described diode D12
Negative pole connect, its negative electrode is connected with one end of described reactance L1；Described electric capacity C1 one end and described diode
The positive pole of D12 connects；The described electric capacity C1 other end is connected with the other end of described reactance L1；Described reactance L1 leads to
Cross described resistance R1 ground connection；
In described second auxiliary switching circuit, the anode of described IGCT T23 and the negative pole of described diode D22
Connecting, its negative electrode is connected with one end of described reactance L2；Described electric capacity C2 one end is with described diode D22 just
Pole connects；The described electric capacity C2 other end is connected with the other end of described reactance L2；Described reactance L2 is by described
Resistance R2 ground connection；
Described control method comprises the steps:
Opening process:
(1) by dc circuit breaker line attachment, and keep IGCT T11, IGCT T12, IGCT T21,
IGCT T22, IGCT T13 and IGCT T23 are blocking, disconnecting switch BRK11, disconnecting switch BRK21
AC circuit breaker BRK12 and AC circuit breaker BRK22 is off-state；
(2) disconnecting switch BRK11 in the first interruption units, then Guan Bi AC circuit breaker BRK12 are closed；
The IGCT T12 of (3) first interruption units；
(4) disconnecting switch BRK21 in the second interruption units, then Guan Bi AC circuit breaker BRK22 are closed,
And turn on IGCT T22 therein；
Turn off process:
1. the IGCT T13 in triggering and conducting the first auxiliary switching circuit；
2. described disconnecting switch BRK11 is disconnected；
3. spark gap absorbs energy；
4. described AC circuit breaker BRK12, disconnecting switch BRK21 and AC circuit breaker BRK22 are disconnected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310359389.4A CN103441490B (en) | 2013-08-16 | 2013-08-16 | A kind of MTDC transmission system dc circuit breaker and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310359389.4A CN103441490B (en) | 2013-08-16 | 2013-08-16 | A kind of MTDC transmission system dc circuit breaker and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103441490A CN103441490A (en) | 2013-12-11 |
| CN103441490B true CN103441490B (en) | 2016-08-10 |
Family
ID=49695172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310359389.4A Active CN103441490B (en) | 2013-08-16 | 2013-08-16 | A kind of MTDC transmission system dc circuit breaker and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103441490B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882877B (en) * | 2014-02-28 | 2017-12-01 | 西门子公司 | A kind of high voltage DC breaker |
| CN104158171B (en) * | 2014-08-18 | 2017-06-06 | 国家电网公司 | A kind of high-voltage direct-current breaker topology circuit |
| CN107645154B (en) * | 2016-07-20 | 2020-03-06 | 全球能源互联网研究院有限公司 | Novel combined direct current circuit breaker and application method thereof |
| CN107171278B (en) * | 2017-05-24 | 2018-11-20 | 国家电网公司 | A kind of no-voltage dc circuit breaker and investment method for dividing |
| CN112383032B (en) * | 2020-09-30 | 2022-05-20 | 四川大学 | Thyristor-based active direct current breaker and control method thereof |
| CN117374899B (en) * | 2023-10-20 | 2024-04-30 | 中科智寰(北京)科技有限公司 | DC power grid feed-in protection device with lightning protection function |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102959818A (en) * | 2010-06-30 | 2013-03-06 | Abb技术有限公司 | An hvdc switchyard and an hvdc switchyard system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012100831A1 (en) * | 2011-01-27 | 2012-08-02 | Alstom Technology Ltd | Circuit breaker apparatus |
-
2013
- 2013-08-16 CN CN201310359389.4A patent/CN103441490B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102959818A (en) * | 2010-06-30 | 2013-03-06 | Abb技术有限公司 | An hvdc switchyard and an hvdc switchyard system |
Non-Patent Citations (1)
| Title |
|---|
| 混合型限流断路器在高短路电流上升率时换流试验分析;王晨等;《电力系统自动化》;20090825;第33卷(第16期);第65-69页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103441490A (en) | 2013-12-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103457257B (en) | A kind of MTDC transmission system dc circuit breaker and control method thereof | |
| CN103474983B (en) | High voltage and great current direct-current circuit breaker and control method thereof | |
| CN103441490B (en) | A kind of MTDC transmission system dc circuit breaker and control method thereof | |
| CN103457256B (en) | A kind of MTDC transmission system DC circuit breaker and control method thereof | |
| CN103441489B (en) | A kind of MTDC transmission system DC circuit breaker and control method thereof | |
| CN105870877B (en) | passive hybrid direct current breaker based on thyristor and application method thereof | |
| CN104900444B (en) | The topological structure and its control method of dc circuit breaker | |
| CN104979796B (en) | A kind of precharge type high speed d-c circuit breaker and its control method | |
| WO2015154537A1 (en) | Passive high-voltage direct-current circuit breaker and implementation method therefor | |
| WO2017181927A1 (en) | Direct current switch-off device and control method thereof | |
| CN106026012B (en) | A kind of mixing type active type high voltage DC breaker | |
| CN104753044B (en) | A kind of hybrid all solid state high voltage direct-current breaker topology structure | |
| CN103647248B (en) | A kind of high-voltage DC rapid breaker | |
| CN103646805B (en) | A kind of direct-current breaker topology | |
| CN104638605A (en) | Capacitive buffer type mixed high-voltage direct current circuit breaker and control method thereof | |
| CN107947131A (en) | Fault insulation and resume method based on micro- loss combined machine formula dc circuit breaker | |
| CN106786349A (en) | A kind of assist exchanging circuit module and high voltage DC breaker | |
| CN105305371A (en) | High voltage and direct current breaker with coupling reactor | |
| WO2015081615A1 (en) | Direct-current circuit breaker | |
| CN106711930A (en) | DC circuit breaker and control method thereof | |
| CN103681039A (en) | High-voltage direct-current breaker topology | |
| CN104980137A (en) | Forced current conversion type all-solid-state high-speed DC circuit breaker and current conversion switch | |
| CN106057566B (en) | A kind of combination switch and its working method for high-voltage capacitance switching | |
| CN103457258B (en) | A kind of MTDC transmission system DC circuit breaker and control method thereof | |
| CN109327016B (en) | Direct-current interelectrode breaking device and control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |