CN206559027U - A kind of current limliting of magnetic induction transfer cut-offs formula dc circuit breaker - Google Patents
A kind of current limliting of magnetic induction transfer cut-offs formula dc circuit breaker Download PDFInfo
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- CN206559027U CN206559027U CN201621223282.2U CN201621223282U CN206559027U CN 206559027 U CN206559027 U CN 206559027U CN 201621223282 U CN201621223282 U CN 201621223282U CN 206559027 U CN206559027 U CN 206559027U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
A kind of current limliting shifted based on magnetic induction cut-offs formula dc circuit breaker, including main current circuit and transfer current circuit；Wherein, main current circuit and transfer current circuit in parallel；Main current circuit switchs for high speed machine；Transfer current circuit constitutes bridge circuit by the first circuit to the 6th circuit；The transfer current circuit only with one group unidirectionally the component with breaking function can be realized as the two-way disjunction of electric current, the usage amount compared to existing structure turn-off device can reduce 50%.Simultaneously, the circuit of current limliting module the 5th is included inside carry circuit and the circuit of module the 6th is cut-off, the usage amount of turn-off device in module is cut-off by the way that the electric current of main circuit to be transferred to current limliting module and can further reduce, therefore total turn-off device usage amount is changed into original 25%, is substantially reduced breaker cost.
Description
Technical field
The utility model belongs to primary cut-out field, and in particular to a kind of current limliting of magnetic induction transfer is cut-off formula direct current and broken
Road device.
Background technology
With the continuous lifting of power system capacity, DC power transmission equipment flourishes, at the same it is also stable to system and
Safety proposes higher requirement.Inside the various failures that power system may occur, endanger maximum for power network, occur
It is exactly short trouble that probability is very high.After short trouble occurs in power system, zooming short circuit current flow can cause ten
Divide serious consequence.
Typical hybrid circuit breaker realizes fast transfer and the disjunction of electric current, cost using all-controlling power electronics device
Water-cooling system that is expensive and needing complexity, it is difficult to promoted in following mesohigh straight-flow system.In order to reduce full-control type electric power
The usage amount of electronic device, it is proposed that a kind of current limliting and cut-off the dc circuit breaker being combined.Electric current is turned using induction module
Electric capacity and resistance are moved to, limits current to that certain below horizontal, the shut-off of electric current is then realized using IGBT device.It is this
The usage amount of breaker IGBT device can be significantly reduced to the 25% of existing breaker, and not need complicated cooling system
System, while having the advantages that the arc time is short, breaking speed is fast, with higher feasibility.
Utility model content
The deficiency or defect existed for above-mentioned prior art, the purpose of this utility model is that providing a kind of magnetic induction turns
The current limliting of shifting cut-offs formula dc circuit breaker；
The breaker includes main current circuit and transfer current circuit；
The main current circuit is used to pass through the electric current under normal operating conditions；
The transfer current circuit is used for when there is short-circuit current, realizes short-circuit current from main current circuit
Transfer, and limit and disjunction short-circuit current；
The transfer current circuit includes the first circuit to the 6th circuit；
First circuit is connected with second circuit, tertiary circuit and the 4th circuit connected in series, the 5th circuit and the 6th circuit
The 5th electricity is connected with series connection, the end points between end points, tertiary circuit and the 4th circuit between the first circuit and second circuit
Road and the 6th circuit；
The main current circuit includes high speed machine and switchs S；
First circuit and second circuit include vacuum switch, gas triggered gap switch or high speed machine and opened respectively
One or more kinds of connection in series-parallel combination in the Central Shanxi Plain；
The tertiary circuit includes high speed machine and switchs S1 and power semiconductor A3；
The high speed machine switch S1 and power semiconductor A3 is in series；
4th circuit includes high speed machine switch S2 and power semiconductor A4；
The high speed machine switch S2 and power semiconductor A4 is in series；
5th circuit includes primary side inductor L0, secondary inductance device L1, recharged capacitance or superconduction inductance composition
B1, power semiconductor or triggered gap composition B2, electric capacity C and resistance R；
Primary side inductor L0 and secondary inductance the device L1 constitutes transformer；
The primary side inductor L0, between the B1 and power semiconductor or triggering of recharged capacitance or superconduction inductance composition
The B2 of gap composition is in series；
The electric capacity C and resistance R are in parallel；
6th circuit is by with the power semiconductor and arrester MOV and joint group for being capable of cut-off current ability
Into.
Breaker described in the utility model is by controlling the power semiconductor of transfer current circuit according to certain sequential
Conducting, can with fast transfer, limit and cut-off short circuit current flow.Meanwhile, the high-speed switch arc time is short, and with recovery after arc
Dielectric recovery property is good between time, contact.Transfer current circuit uses bridge architecture, and only unidirectionally having with one group can turn-off capacity
Power semiconductor can just realize the two-way disjunction to electric current, relative to existing design, at least save 75% it is unidirectional
With can turn-off capacity power semiconductor, effectively reduction breaker control complexity and manufacturing cost.By in transfer
Serial mutual inductor in current circuit, the electric capacity electric discharge for the primary side side that control transformer is isolated with straight-flow system produces pulse current,
Pulse current is induced in the transformer secondary side being connected with straight-flow system to shift the electric current in high speed machine switch, produces electricity
Flow through zero point.Isolating for electric capacity charhing unit and straight-flow system can be realized, the voltage class and body of charhing unit is substantially reduced
Product, improves the reliability cut-off.
Brief description of the drawings
Fig. 1 is breaker body construction schematic diagram in the utility model one embodiment；
A kind of structural representation when Fig. 2 is breaker one-way only operation in the utility model one embodiment；
Another structural representation when Fig. 3 is breaker one-way only operation in the utility model one embodiment；
Transfer current circuital current mark schematic diagram when Fig. 4 is breaking current in the utility model one embodiment；
Sense of current when system is normally run when Fig. 5 (a) is breaking current in the utility model one embodiment；
Electric current is to triggered gap or speed-sensitive switch A1, electricity when Fig. 5 (b) is breaking current in the utility model one embodiment
The transfer branch road transfer process sense of current of road A6, inductor L1, power semiconductor A4 and speed-sensitive switch S2 composition；
Fig. 5 (c) is that power semiconductor A3 and speed-sensitive switch S1 compositions branch road continues in the utility model one embodiment
Stream process sense of current；
Electric current is completely transferred to triggered gap or high speed when Fig. 5 (d) is breaking current in the utility model one embodiment
Switch the transfer branch road transfer process electric current of A1, circuit A6, inductor L1, power semiconductor A4 and speed-sensitive switch S2 composition
Direction；
Electric current when Fig. 5 (e) is breaking current in the utility model one embodiment in circuit A6 from turn-off device to
Sense of current schematic diagram when MOV is shifted；
When electric current when Fig. 5 (f) is breaking current in the utility model one embodiment in circuit A6 is transferred completely into MOV
Sense of current schematic diagram；
Sense of current when system is normally run when Fig. 6 (a) is breaking current in the utility model one embodiment；
Electric current is to triggered gap or speed-sensitive switch A2, electricity when Fig. 6 (b) is breaking current in the utility model one embodiment
The transfer branch road transfer process sense of current of sensor L1, circuit A6, power semiconductor A3 and speed-sensitive switch S1 composition；
Fig. 6 (c) is that power semiconductor A4 and speed-sensitive switch S2 compositions branch road continues in the utility model one embodiment
Stream process sense of current；
Electric current is completely transferred to triggered gap or high speed when Fig. 6 (d) is breaking current in the utility model one embodiment
Switch the transfer branch road transfer process electric current of A2, inductor L1, circuit A6, power semiconductor A3 and speed-sensitive switch S1 composition
Direction；
Electric current when Fig. 6 (e) is breaking current in the utility model one embodiment in circuit A6 from turn-off device to
Sense of current schematic diagram when MOV is shifted；
When electric current when Fig. 6 (f) is breaking current in the utility model one embodiment in circuit A6 is transferred completely into MOV
Sense of current schematic diagram；
Fig. 7 is that the current limliting shifted according to the magnetic induction of the utility model one embodiment cut-offs the corresponding of formula dc circuit breaker
The curent change curve map in each circuit when Fig. 5 breaking current；
Fig. 8 is a kind of specific implementation instance graph of the utility model one embodiment；
Fig. 9 is another specific implementation instance graph of the utility model；
Wherein, A1, A2 are vacuum or air triggered gap, and A3, A4 are diode, and A6 is IGBT, and B1 is by precharge electricity
Perhaps superconduction inductance composition, B2 are IGCT, and L0 is primary side inductor, and L1 is secondary inductance device, and C is electric capacity, and R is resistance, and S is
High-speed switch, S1, S2 switch for high speed machine, and i is main current circuit, and i0 to i8 is branch current circuit.
Embodiment
Illustrate embodiment of the present utility model below in conjunction with accompanying drawing 1-9.
In one embodiment, formula dc circuit breaker is cut-off the utility model discloses a kind of current limliting of magnetic induction transfer,
The breaker includes main current circuit, transfer current circuit；
The main current circuit is used to pass through the electric current under normal operating conditions；
The transfer current circuit is used for when there is short-circuit current, realizes short-circuit current from main current circuit
Transfer.
In the present embodiment, breaker body structural representation as shown in Figure 1, including main current circuit, transfer current
Circuit and overvoltage limiting circuit.In order to better illustrate breaker breaking course, circuit breaker current is given as shown in Figure 2
From the structural representation of left side to the right, the hybrid circuit breaker included to embody the present embodiment has two-way function, and Fig. 3 gives
Go out the structural representation of electric current from right side to the left.The breaker can receive the system power of different directions, as two-way
Breaker.
In one embodiment, the transfer current circuit includes the first circuit to the 6th circuit；
First circuit is connected with second circuit, tertiary circuit and the 4th circuit connected in series, the 5th circuit and the 6th circuit
The 5th electricity is connected with series connection, the end points between end points, tertiary circuit and the 4th circuit between the first circuit and second circuit
Road and the 6th circuit.
In one embodiment, the main current circuit includes high speed machine switch S；
First circuit and second circuit include vacuum switch, gas triggered gap switch or high speed machine and opened respectively
One or more kinds of connection in series-parallel combination in the Central Shanxi Plain；
The tertiary circuit includes high speed machine and switchs S1 and power semiconductor A3；
The high speed machine switch S1 and power semiconductor A3 is in series；
4th circuit includes high speed machine switch S2 and power semiconductor A4；
The high speed machine switch S2 and power semiconductor A4 is in series；
5th circuit includes primary side inductor L0, secondary inductance device L1, recharged capacitance or superconduction inductance composition
B1, power semiconductor or triggered gap composition B2, electric capacity C and resistance R；
Primary side inductor L0 and secondary inductance the device L1 constitutes transformer；
The primary side inductor L0, between the B1 and power semiconductor or triggering of recharged capacitance or superconduction inductance composition
The B2 of gap composition is in series；
The electric capacity C and resistance R are in parallel；
6th circuit is by with the power semiconductor and arrester MOV and joint group for being capable of cut-off current ability
Into.
In the present embodiment, first circuit is composed in series one or two carry circuit branch roads, described 1 with second circuit
Branch road is in parallel with main current circuit；The tertiary circuit and the 4th circuit connected in series constitute three or four carry circuit branch roads, described 34
Branch road is in parallel with main current circuit.
In one embodiment, primary side inductor L0 and secondary inductance the device L1 includes air-core inductor or containing magnetic core
Inductor.
In one embodiment, the resistance R includes fixed carbon resister, metalfilmresistor, metal oxidation resistance, line around electricity
Resistance, high-power wire-wound resistor, organic solid resistor, fusing resistor, cement resistor, superconducting current-limiting resistance, liquid metal resistance,
One kind in PTC resistor.
In one embodiment, the high speed machine in the main current circuit high speed mechanical switch S, first and second circuit
Switch, high speed machine switch S1 and high speed machine switch S2 include the high speed machine switch based on electromagnetic repulsion force, based on electricity at a high speed
The mechanical switch of machine driving or the high speed machine switch based on explosion driving.
In one embodiment, the breaker also includes overvoltage limiting circuit, the overvoltage limiting circuit and master
Current circuit is in parallel；
When the breaker in normal operation, electric current flows through from the main current circuit, now transfer current electricity
Road and overvoltage limiting circuit do not have electric current to flow through.
In one embodiment, described power semiconductor A3, A4 include Power Diode Pumped, IGCT, IGBT,
One kind in IGCT, GTO；
The B2 being made up of power semiconductor by one or more power semiconductor strings with half control function simultaneously
Connection is formed, including but not limited to the one or more in IGCT, IGBT, IGCT, GTO.
In one embodiment, have that to be capable of the power semiconductor of cut-off current ability be complete in the 6th circuit
Control type power semiconductor, one or more combinations including but not limited in IGBT, IGCT, GTO.
In one embodiment, the arrester MOV in the 6th circuit includes piezo-resistance or zinc oxide valve plate is constituted
Arrester.
In one embodiment, when occurring short trouble, it is necessary to during disjunction short circuit current flow：
If detecting the direction of short circuit current flow from left to right, to control the first circuit, the 4th circuit turn-on, the second electricity
Still in off-state in road, tertiary circuit, power semiconductor in the 6th circuit is accessed into circuit, electric current by conducting direction
The 1-5-6-4 branch roads transfer constituted from main current circuit to the first circuit, 5,6 and 4；
If detecting the direction of short circuit current flow from right to left, to control second circuit, tertiary circuit conducting, the first electricity
Still in off-state in road, the 4th circuit, power semiconductor in the 6th circuit is accessed into circuit, electric current by conducting direction
The 2-5-6-3 branch roads transfer constituted from main current circuit to second circuit, 5,6 and 3；
In the present embodiment, each branch current mark of transfer current circuit when Fig. 4 gives breaking current, wherein i is stream
Electric current through breaker, i0 is the electric current for flowing through main current circuit, and i7 is the electric current for flowing through the first circuit, and i2 is electric to flow through second
The electric current on road, i3 is the electric current for flowing through tertiary circuit, and i4 is the electric current for flowing through the 4th circuit, i5 for flow through B1 in the 5th circuit,
B2 and L0 electric current, i6 is the electric current for flowing through L1 and the 6th circuit in the 5th circuit, and i7 passes through the electricity of MOV in the 6th circuit for stream
Stream.
By electric current from left to right exemplified by, each branch current in transfer current circuit when Fig. 5 (a)-(f) gives breaking current
Direction, specific each branch current direction for the correspondence moment each from t0 to t5.
Its specific operating procedure include the following aspects (by the sense of current from left to right exemplified by)：
1) system is normally run, and electric current all flows through from main current circuit, such as shown in Fig. 6 (a), wherein system nominal current
For I.Recharged capacitance or superconduction inductance B1 precharge.First circuit, 2,6 are in off-state, S1, S2 closure.
2) short trouble occurs for t0 moment, system, and main current circuit electric current is begun to ramp up, between t0 and t1, when more than being
During system short-circuit threshold value, control system action controls to form electric arc between high-speed switch separating brake, contact.
3) t1 moment, conduction device B2, while controlling conduction device A1, A4 and power semiconductor A6.B1, B2 and L0
Discharge loop is formed, while inducing electric current in inductance L1.Main current loop electric current is gradually to transfer current branch road 1-5-6-4
Transfer, main current circuit electric current reduces.As shown in Fig. 6 (b).
4) t2 moment, high-speed switch electric current is all shifted, and forms fracture.Simultaneously turn on power semiconductor A4, the 4th
Shown in circuit afterflow, such as Fig. 6 (c).
5) t3 moment, semiconductor devices A4 afterflows terminate, and main current circuit fracture obtains enough dielectric strengths, open the 4th
Circuit high speed switchs S2, and main current circuit electric current is transferred to shown in transfer current branch road 1-5-6-4, such as Fig. 6 (d) completely.
6) electric current in t4 moment, transfer branch road capacitor is fully transferred to resistor.
7) t5 moment, induction module primary current is reduced to 0.
8) power semiconductor is turned off in t6 moment, the 6th circuit, arrester conducting.As shown in Fig. 6 (e), electric current is opened
Begin to shift to arrester.
9) electric current in t7 moment, branch road 1-5-6-4 is fully transferred to arrester in the 6th circuit, shown in such as Fig. 6 (f),
Now the voltage at breaker two ends reaches peak, is breaker two ends overvoltage peak value in interrupting process.Hereafter, in arrester
Electric current will begin to decline, the voltage at breaker two ends also begins to slow decline, when the minimum that system power is less than arrester is led
During galvanization 1mA, arrester is closed, and arrester both end voltage declines rapidly.
9) electric current in t8 moment, arrester is 0, and breaker cut-offs completion, and the voltage at breaker two ends is reduced to system electricity
Pressure.
Similar, with the sense of current from right to left：
1) system is normally run, and electric current all flows through from main current circuit, such as shown in Fig. 6 (a), wherein system nominal current
For I.Recharged capacitance or superconduction inductance B1 precharge.First circuit, 2,6 are in off-state, S1, S2 closure.
2) short trouble occurs for t0 moment, system, and main current circuit electric current is begun to ramp up, between t0 and t1, when more than being
During system short-circuit threshold value, control system action controls to form electric arc between high-speed switch separating brake, contact.
3) t1 moment, conduction device B2, while controlling conduction device A2, A3 and power semiconductor A6.B1, B2 and L0
Discharge loop is formed, while inducing electric current in inductance L1.Main current loop electric current is gradually to transfer current branch road 2-5-6-3
Transfer, main current circuit electric current reduces.As shown in Fig. 6 (b).
4) t2 moment, high-speed switch electric current is all shifted, and forms fracture.Simultaneously turn on power semiconductor A4, the 4th
Shown in circuit afterflow, such as Fig. 6 (c).
5) t3 moment, semiconductor devices A4 afterflows terminate, and main current circuit fracture obtains enough dielectric strengths, open the 4th
Circuit high speed switchs S2, and main current circuit electric current is transferred to shown in transfer current branch road 2-5-6-3, such as Fig. 6 (d) completely.
6) electric current in t4 moment, transfer branch road capacitor is fully transferred to resistor.
7) t5 moment, induction module primary current is reduced to 0.
8) power semiconductor is turned off in t6 moment, the 6th circuit, arrester conducting.As shown in Fig. 6 (e), electric current is opened
Begin to shift to arrester.
9) electric current in t7 moment, branch road 2-5-6-3 is fully transferred to arrester in the 6th circuit, shown in such as Fig. 6 (f),
Now the voltage at breaker two ends reaches peak, is breaker two ends overvoltage peak value in interrupting process.Hereafter, in arrester
Electric current will begin to decline, the voltage at breaker two ends also begins to slow decline, when the minimum that system power is less than arrester is led
During galvanization 1mA, arrester is closed, and arrester both end voltage declines rapidly.
9) electric current in t8 moment, arrester is 0, and breaker cut-offs completion, and the voltage at breaker two ends is reduced to system electricity
Pressure.
In one embodiment, the high-speed switch in the main current circuit in high-speed switch S or the first circuit -4 includes
High speed machine switch based on electromagnetic repulsion force, the mechanical switch driven based on high-speed electric expreess locomotive or the high speed machine based on explosion driving
Switch.
In one embodiment, first circuit, second circuit can be vacuum, gas triggered gap or high speed machine
Tool is switched and its connection in series-parallel combination；
In 6th circuit with cut-off current ability power semiconductor include but is not limited to IGBT, IGCT,
One or any number of combinations in GTO；
The primary side inductor L0 and secondary inductance device L1 of the composition transformer are air core inductor or the inductor containing magnetic core.
In the present embodiment, the tertiary circuit, the 4th circuit are respectively that high speed machine switch S1, S2 and power are partly led
Body device A3, A4 connect；
Described power semiconductor A3, A4 can be but be not limited to Power Diode Pumped, IGCT, IGBT, IGCT, GTO
Deng；B2 be the one or more connection in series-parallel of power semiconductor with half control function form, including but not limited to IGCT,
IGBT, IGCT, GTO etc..
In one embodiment, the arrester is the arrester that piezo-resistance or zinc oxide valve plate are constituted.
In one embodiment, as shown in Fig. 8 a kind of instantiation figure, A1, A2 are triggered vacuum gap.A3、A4
For Power Diode Pumped.A6 constitutes for IGBT connection in series-parallel.B1 is pre-charge capacitor, and B2 is IGCT.
In one embodiment, a kind of instantiation figure as shown in Figure 9, in the example shown, A1, A2 trigger for air
Gap.A3, A4 are IGCT.A6 constitutes for IGCT connection in series-parallel.B1 is superconduction inductance, and B2 is Power Diode Pumped.
According to the utility model, A3, A4, B2 are power semiconductor of one-way conduction and combinations thereof, the 6th electricity
The power semiconductor on road is the power semiconductor of the ability with cut-off current.
Formula dc circuit breaker, including main current circuit are cut-off the utility model discloses a kind of current limliting of magnetic induction transfer,
Transfer current circuit and overvoltage limiting circuit.Transfer current circuit constitutes bridge-type knot by vacuum, gas or speed-sensitive switch
Structure, it is only necessary to can complete disjunction bidirectional current using one group of unidirectional full-control type power semiconductor.When breaker needs to cut-off
During electric current, by controlling triggered gap, speed-sensitive switch and the action sequence of power semiconductor, main current circuit can be avoided at a high speed
Fracture reverse current is switched, breaking capacity is improved.The transfer current circuit uses bridge architecture, only unidirectionally has with one group and divides
The component of disconnected function can just realize the two-way disjunction of electric current, and the usage amount compared to existing structure turn-off device can subtract
Few 50%.Meanwhile, comprising the circuit of current limliting module the 5th and the circuit of module the 6th is cut-off inside carry circuit, by by main circuit
Electric current be transferred to current limliting module and can further reduce the usage amount for cut-offfing turn-off device in module, therefore total turn off
Device usage amount is changed into original 25%, is substantially reduced breaker cost.
Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that embodiment of the present utility model is only limitted to this, for the utility model person of an ordinary skill in the technical field
For, without departing from the concept of the premise utility, some simple deduction or replace can also be made, should be all considered as
Belong to the utility model and determine protection domain by the claims submitted.
Claims (8)
1. a kind of current limliting of magnetic induction transfer cut-offs formula dc circuit breaker, it is characterised in that：The breaker includes principal current electricity
Road and transfer current circuit；
The main current circuit is used to pass through the electric current under normal operating conditions；
The transfer current circuit is used for when there is short-circuit current, realizes short-circuit current turning from main current circuit
Move, and limit and disjunction short-circuit current；
The transfer current circuit includes the first circuit to the 6th circuit；
First circuit is connected with second circuit, tertiary circuit and the 4th circuit connected in series, the 5th circuit and the 6th circuit connected in series,
The 5th circuit and are connected with the end points between end points, tertiary circuit and the 4th circuit between first circuit and second circuit
Six circuits；
The main current circuit includes high speed machine and switchs S；
First circuit and second circuit are included in vacuum switch, gas triggered gap switch or high speed machine switch respectively
One or more kinds of connection in series-parallel combination；
The tertiary circuit includes high speed machine and switchs S1 and power semiconductor A3；
The high speed machine switch S1 and power semiconductor A3 is in series；
4th circuit includes high speed machine switch S2 and power semiconductor A4；
The high speed machine switch S2 and power semiconductor A4 is in series；
5th circuit includes B1, the work(of primary side inductor L0, secondary inductance device L1, recharged capacitance or superconduction inductance composition
B2, electric capacity C and the resistance R of rate semiconductor devices or triggered gap composition；
Primary side inductor L0 and secondary inductance the device L1 constitutes transformer；
The B1 and power semiconductor or triggered gap group of the primary side inductor L0, recharged capacitance or superconduction inductance composition
Into B2 be in series；
The electric capacity C and resistance R are in parallel；
6th circuit with the power semiconductor for being capable of cut-off current ability with arrester MOV by composing in parallel.
2. breaker according to claim 1, it is characterised in that：Primary side inductor L0 and secondary inductance the device L1 includes
Air-core inductor or the inductor containing magnetic core.
3. breaker according to claim 1, it is characterised in that：The resistance R include fixed carbon resister, metalfilmresistor,
Metal oxidation resistance, wire-wound resistor, organic solid resistor, fusing resistor, cement resistor, superconducting current-limiting resistance, liquid metal
One kind in resistance, PTC resistor.
4. breaker according to claim 1, it is characterised in that：The main current circuit high speed mechanical switch S,
First, in two circuits high speed machine switch, high speed machine switch S1 and high speed machine switch S2 includes the height based on electromagnetic repulsion force
Fast mechanical switch, the mechanical switch driven based on high-speed electric expreess locomotive or the high speed machine switch based on explosion driving.
5. breaker according to claim 3, it is characterised in that：The breaker also includes overvoltage limiting circuit, institute
State overvoltage limiting circuit and main current circuit is in parallel；
When the breaker in normal operation, electric current flows through from the main current circuit, now transfer current circuit and
Overvoltage limiting circuit does not have electric current to flow through.
6. breaker according to claim 1, it is characterised in that：Described power semiconductor A3, A4 include electric power two
One kind in pole pipe, IGCT, IGBT, IGCT, GTO；
The B2 being made up of power semiconductor by one or more power semiconductor connection in series-parallel with half control function and
Into, including the one or more in IGCT, IGBT, IGCT, GTO.
7. breaker according to claim 1, it is characterised in that：Having in 6th circuit being capable of cut-off current ability
Power semiconductor be full-control type power semiconductor, including one or more combinations in IGBT, IGCT, GTO.
8. breaker according to claim 1, it is characterised in that：Arrester MOV in 6th circuit includes pressure-sensitive
The arrester of resistance or zinc oxide valve plate composition.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621223282.2U CN206559027U (en) | 2016-11-11 | 2016-11-11 | A kind of current limliting of magnetic induction transfer cut-offs formula dc circuit breaker |
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| CN201621223282.2U CN206559027U (en) | 2016-11-11 | 2016-11-11 | A kind of current limliting of magnetic induction transfer cut-offs formula dc circuit breaker |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112952743A (en) * | 2019-12-11 | 2021-06-11 | 清华四川能源互联网研究院 | Direct current breaker based on forced resonance commutation principle |
| US11289899B2 (en) * | 2018-08-24 | 2022-03-29 | Mitsubishi Electric Corporation | Direct-current breaking device |
-
2016
- 2016-11-11 CN CN201621223282.2U patent/CN206559027U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11289899B2 (en) * | 2018-08-24 | 2022-03-29 | Mitsubishi Electric Corporation | Direct-current breaking device |
| CN112952743A (en) * | 2019-12-11 | 2021-06-11 | 清华四川能源互联网研究院 | Direct current breaker based on forced resonance commutation principle |
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