CN206117139U - Transition magnetic pulse induction type current transfer circuit - Google Patents
Transition magnetic pulse induction type current transfer circuit Download PDFInfo
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- CN206117139U CN206117139U CN201621083754.9U CN201621083754U CN206117139U CN 206117139 U CN206117139 U CN 206117139U CN 201621083754 U CN201621083754 U CN 201621083754U CN 206117139 U CN206117139 U CN 206117139U
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Abstract
This has openly revead a transition magnetic pulse induction type current transfer circuit, the transfer scheme includes main current circuit and transfer current circuit. The transfer current circuit contains a mutual -inductor, uses this transfer current circuit can accomplish quick current transfer, realizes current limit or divides absolutely. Simultaneously, condenser in the second circuit and direct current system's isolation can show the electric pressure and the volume that reduce battery charging unit, improve the reliability that shifts. This openly can realize multiple engineering application function, like direct current breaker, interchange high speed circuit -breaker, friendship, direct current current limiter.
Description
Technical field
The disclosure belongs to electronic circuit field, more particularly to a kind of transition magnetic field impulse induction type current carry circuit.
Background technology
With the continuous lifting of direct current power system capacity, direct current electric transmission and transformation technology flourishes, while also steady to system
Fixed and safety is put forward higher requirement.In power system it may happen that various failures inside, it is maximum for electrical network harm,
It is exactly short trouble that probability of happening is very high.Because direct-current system short-circuit current peak value will rise in a short period of time very
High level, therefore the excision and protection of its short trouble is the major issue that straight-flow system development faces.The difficulty of direct current disjunction
Point is mainly reflected in two aspects：One is that DC current has natural zero-crossing point unlike alternating current, so current over-zero is non-
It is often difficult, need artificial creation current zero-crossing point；Two is that dc circuit breaker needs to absorb huge in short circuit current breaking course
Energy.
Utility model content
Based on this, the disclosure discloses a kind of transition magnetic field impulse induction type current carry circuit, and the circuit includes main electricity
Current circuit, transfer current circuit and access interface；
The main current circuit is used for continuous bearing electric current or interim conducting electric current；
The transfer current circuit is used to bear the electric current come from main current circuit transfer；
The access interface is used to be connected with external system.
The beneficial effect of the disclosure：1) electric current directly can be transferred to spark gap by the voltage produced by transformer, be saved
The process for having gone electric current to shift to capacitor or power electronic devices, current limliting or cut-offs speed reliability far above traditional
Technology；
2) disclosure can realize isolating for electric capacity charhing unit and straight-flow system, be substantially reduced voltage of charhing unit etc.
Level and volume, improve Reliability of Microprocessor；
3) power semiconductor or triggered gap composition bridge-type electricity are used in the former limit side of transfer current current transformer
Road, it is possible to achieve bidirectional current is shifted, the pressure and low cost of bridge circuit.
Description of the drawings
Fig. 1 is the structural representation of the transition magnetic field impulse induction type current carry circuit according to disclosure one embodiment；
When Fig. 2 is the one-way only operation according to the transition magnetic field impulse induction type current carry circuit of disclosure one embodiment
Structural representation；
Fig. 3 is the unidirectional work of another kind of the transition magnetic field impulse induction type current carry circuit according to disclosure one embodiment
Structural representation when making；
Fig. 4 is illustrated according to the transition magnetic field impulse induction type current carry circuit current signature of disclosure one embodiment
Figure；
Principal current when Fig. 5 (a) is the transfer current according to the magnetic coupling conversion type carry circuit of disclosure one embodiment
The current direction schematic diagram of circuit；
Principal current when Fig. 5 (b) is the transfer current according to the magnetic coupling conversion type carry circuit of disclosure one embodiment
The current direction schematic diagram of circuit and transfer current circuit；
Electricity is shifted when Fig. 5 (c) is the transfer current according to the magnetic coupling conversion type carry circuit of disclosure one embodiment
The current direction schematic diagram of current circuit；
Fig. 6 is turning corresponding to Fig. 5 according to the transition magnetic field impulse induction type current carry circuit of disclosure one embodiment
Curent change curve chart in each circuit when moving electric current；
Fig. 7 is the transition magnetic field impulse induction type current carry circuit figure according to disclosure one embodiment；
Fig. 8 is the transition magnetic field impulse induction type current carry circuit figure according to another embodiment of the disclosure；
Fig. 9 is the disjunction side of the hybrid circuit breaker according to the two-way disjunction after Fig. 8 optimizations in disclosure one embodiment
The step of method schematic diagram.
Specific embodiment
It is described in detail below be actually only it is exemplary and be not intended to limit application and use.Additionally, being not intended to
By any clear and definite or hint the theoretical constraint of above technical field, background, brief overview or middle presentation described in detail below.Remove
Non- clearly to have contrary description, otherwise word " including " and its different modifications should be understood to imply includes described portion
Part but it is not excluded for any miscellaneous part.
In one embodiment, the disclosure discloses a kind of transition magnetic field impulse induction type current carry circuit, the circuit
Including main current circuit, transfer current circuit and access interface；
The main current circuit is used for continuous bearing electric current or interim conducting electric current；
The transfer current circuit is used to bear the electric current come from main current circuit transfer；
The access interface is used to be connected with external system.
The purpose of the present embodiment is to provide a kind of transition magnetic field impulse induction type current carry circuit, using transformer and is kept away
The series connection of thunder device is realized the fast transfer of electric current and is cut-off, eliminates and set up voltage using capacitor or power electronic devices and will be
System electric current is transferred to the process of spark gap.By the transformer former limit lateral capacitance electric discharge for controlling to isolate with straight-flow system so as to produce
Raw pulse current, while the transformer secondary side being connected with straight-flow system induces high voltage so that spark gap is turned on to form pulse
Electric current, main current circuit electric current is resisted using the electric current, makes electric current from main current circuit to comprising spark gap and transformer
Carry circuit is shifted, and then completes cut-offfing or limiting for electric current using spark gap.
In one embodiment, the main current circuit is by mechanical switch, power electronic devices and current limiter
Individual or multiple compositions in series or in parallel.
In the present embodiment, the main current circuit can be included with continuous bearing or interim conducting electric current, main current circuit
One or more connection in series-parallel combinations in mechanical switch, power electronic devices, current limiter, wire, main current circuit is special as this
Part is transferred in sharp carry circuit, the access interface as this patent to external system is drawn at its two ends.
In one embodiment, the transfer current circuit includes the first circuit and second circuit；
First circuit includes secondary inductance device and spark gap, and the secondary inductance device is in series with spark gap；
The second circuit includes recharged capacitance, inductance, IGCT B1-B4 and former limit inducer；
The recharged capacitance and inductance are in series and constitute tertiary circuit A3；
The IGCT B1 to B4 includes power semiconductor or triggered gap；
The IGCT B1 to B4 be in series composition loop after with former limit inductor in series；
The IGCT B1 to B4 and tertiary circuit A3 composition bridge circuits；
The former limit inducer and secondary inductance device composition transformer.
In the present embodiment, the transfer current circuit has the ability born from main current circuit institute transfer current, bag
Containing by secondary inductance device and spark gap.The first circuit that secondary inductance device, spark gap are composed in series；By recharged capacitance or superconduction
The B1-B4 and former limit inducer L0 series connection groups of the tertiary circuit A3, power semiconductor or triggered gap composition of inductance composition
Into second circuit, the former limit inducer and secondary inductance device composition transformer, first circuit and main current circuit are simultaneously
Connection, the second circuit can insulate with the first circuit, it is also possible to on-insulated.
It is different according to the sense of current, it is to realize transfer bidirectional current, use in the former limit side of transfer current current transformer
Power semiconductor or triggered gap composition bridge circuit.
Before electric current transfer, electric current flows through from the main current circuit in mechanical switch A1；Now, the transfer current
Power electronic devices, trigger switch device and IGCT B1 to B4 are off state in circuit, in the transfer current circuit
First circuit and second circuit flow through without electric current.
In one embodiment, first circuit is in parallel with main current circuit, the second circuit and the first circuit it
Between select insulation or it is on-insulated.
Further, the former limit inducer and secondary inductance device are air-core inductor or the inducer containing magnetic core, by one
Individual or multiple inductance serial or parallel connection compositions.
Further, the spark gap by Zinc-Oxide Arrester, tube type arrester either one of valve-type arrester or
Multiple connection in series-parallel.
Further, the mechanical switch includes standard machinery switch, the height based on electromagnetic repulsion force based on spring mechanism
One kind in fast mechanical switch, the mechanical switch driven based on high-speed electric expreess locomotive or the switch of the high speed machine based on explosion driving；
The current limiter includes in superconductive failure current limiter SFCL, liquid metal current limiter LMFCL, PTC current limiter
Kind.
Further, the power semiconductor include Power Diode Pumped, IGCT, IGBT, IGCT in one or
Multiple connection in series-parallel combinations.
In one embodiment, under normal operating conditions, the electric current in the circuit flows through from main current circuit, this
When, the spark gap, IGCT B1 to B4 in the transfer current circuit is off state, in the first circuit and second circuit
Flow through without electric current；
When the transition magnetic field impulse induction type current carry circuit needs action, by measuring the main current circuit
Current amplitude and rate of change determine power semiconductor or triggered gap and main current circuit in the transfer current circuit
In mechanical switch, power semiconductor whether action and corresponding action sequence.
In one embodiment, the disclosure discloses a kind of transition magnetic impulse type electric current using method, the using method
Comprise the following steps：
S1, current amplitude and rate of change according to main current circuit or according to the outside transfer instruction for receiving, judge
There is short trouble, to the mechanical switch in main current circuit sub-gate signal is sent；
S2, according to direction of current flow, any two IGCT in conducting thyristor B1 to B4, with tertiary circuit A3 and
Inductance constitutes discharge loop；Meanwhile, secondary inductance device two ends produce the voltage for rising, until spark gap conducting, main current circuit
In electric current gradually to the first circuit shift；
S3, after the electric current in main circuit current is shifted completely, voltage is set up at spark gap two ends, can complete current limit
Or breaking function.
Method described in the present embodiment can realize various engineering application function, and such as dc circuit breaker, exchange is quick break
Device, AC and DC current limiter.On the one hand main circuit current can be directly transferred to spark gap by the disclosure, directly set up and cut-off electricity
Pressure completes electric current and cut-offs and limit, and eliminates the pilot process that main circuit current is shifted to capacitor or power electronic devices.
Meanwhile, transformer former limit electric capacity charhing unit is isolated with straight-flow system, is substantially reduced the electric pressure and volume of charhing unit, is carried
The reliability that height cut-offs.Additionally, using power semiconductor or triggered gap in the former limit side of transfer current current transformer
Composition bridge circuit, it is possible to achieve bidirectional current is shifted, the pressure and low cost of bridge circuit.The electric current using method of the disclosure
Circuit is simple, part is few, and the response time is short, improves the susceptiveness and reliability of practical application.
In one embodiment, the present disclosure discloses a kind of transition magnetic field impulse induction type current carry circuit and its user
Method, the transition magnetic field impulse induction type current carry circuit structural representation according to disclosure one embodiment as shown in Figure 1, its
Including main current circuit and transfer current circuit.In order to better illustrate the carry circuit course of work, there is shown herein direct current
Electric current according to a direction inflow and outflow disclosure direction schematic diagram, as shown in Figure 2.Power that may be present is partly led in Fig. 2
The sense of current of body device is consistent with the direction of arrow of mechanical switch A1 in figure, IGCT B2 and B3.Fig. 3 gives DC current
According to the schematic diagram of the other direction inflow and outflow disclosure.
Referring to transition magnetic field impulse induction type current carry circuit disclosed in Fig. 1,2,3, transition magnetic field impulse induction type current turns
Shift circuit includes main current circuit, transfer current circuit and the end that is connected with external system, the main current circuit and
Transfer current circuit in parallel.
The main current circuit can be that one or more in mechanical switch, power electronic devices and current limiter are gone here and there simultaneously
Joint group is closed.
The transfer current circuit includes the first circuit being composed in series by secondary inductance device L1 and spark gap.By being pre-charged
The B1-B4 and former limit inductance of the tertiary circuit A3 of electric capacity or superconduction inductance composition, power semiconductor or triggered gap composition
The second circuit that device L0 is composed in series, the former limit inducer and secondary inductance device composition transformer, first circuit and master
Current circuit is in parallel, and the second circuit can insulate with the first circuit.
It is different according to the sense of current, it is to realize that bidirectional current is shifted, use in the former limit side of transfer current current transformer
Power semiconductor or triggered gap composition bridge circuit.
Under normal operating conditions, electric current flows through from the main current circuit in mechanical switch A1；Now, the transfer electricity
Power electronic devices, trigger switch device and IGCT B1 to B4 are off state, the transfer current circuit in current circuit
In the first circuit and second circuit do not flow through without electric current.
When the transition magnetic field impulse induction type current carry circuit is applied to dc circuit breaker, and need its transfer current
When, determine power semiconductor device in the transfer current circuit by measuring the current amplitude and rate of change of the main current circuit
The whether action and during corresponding action of part or triggered gap and the mechanical switch in main current circuit, power semiconductor
Sequence.
Wherein, the mechanical switch may be based on standard machinery switch, the high speed machine based on electromagnetic repulsion force of spring mechanism
Tool switch, the mechanical switch driven based on high-speed electric expreess locomotive or the high speed machine based on explosion driving are switched；The current limiter includes
But it is not limited to superconductive failure current limiter SFCL, liquid metal current limiter LMFCL, PTC current limiter；The power semiconductor bag
Include but be not limited in Power Diode Pumped, IGCT, IGBT, IGCT or the combination of any number of serial or parallel connections.
Wherein, the former limit inducer and secondary inductance device for constituting transformer is air core inductor or the inducer containing magnetic core, former
Side and secondary can be in series or in parallel using one or more inductance.The transfer current second circuit is by power power electricity
Sub- device or triggered gap B1-B4 composition bridge circuits.
Fig. 4 gives transfer current circuit each branch current mark, and wherein i0 is that the is flowed through in transfer current second circuit
Electric current on three-circuit A3 and former limit inducer L0, i1 is the electric current for flowing through main current circuit, and i2 is the circuit of transfer current first
In electric current with secondary inductance device L1.
In main current circuit, so that electric current flows from left to right as an example, Fig. 5 (a) to (c) is given each during transfer current
The road sense of current, specific each branch current direction for the correspondence moment each from t1 to t5.Fig. 6 gives the electric current of each branch road and becomes
Change curve.
In one embodiment, referring to Fig. 9, included using described transition magnetic field impulse induction type current using method following
Step.
In first step S1, to main current loop mechanical switch A1 sub-gate signal is sent.Prolong because mechanical switch action has
When, now not yet form fracture.
In second step S2, according to direction of current flow, controller is in bridge-type in the carry circuit second circuit
IGCT B2 to B4 two of which sends Continuity signal.Tertiary circuit A3 and former limit inducer L0 forms discharge loop.Meanwhile, by
Zooming voltage is produced in the secondary inductance device L1 two ends of the circuit of induction effect first, until spark gap conducting.Principal current
Loop current is gradually shifted to the circuit of transfer current first.After a period of time, whole electric currents are transferred to the circuit of transfer current first.
Subsequently form fracture between mechanical switch contact.
In third step S3, electric current transfer finish after, certain voltage is set up at spark gap two ends, can complete current limit or
Person's breaking function.
In one embodiment, referring to Fig. 9, the direct current constituted using transition magnetic field impulse induction type current carry circuit is broken
The specific operating procedure of road device includes the following aspects, and electric current is entered as a example by the right side goes out by a main current circuit left side：
System is normally run, and mechanical switch closure, IGCT disconnects, electric current mechanical switch all from main current circuit
Flow through, such as shown in Fig. 5 (a), wherein system nominal current is I.
T1 moment, system is short-circuited failure, and main current circuit electric current begins to ramp up, between t0 and t1, when more than system
During short-circuit threshold value, controller to main current loop mechanical switch A1 sends sub-gate signal.Because mechanical switch action has time delay, this
Shi Shangwei forms fracture.
T2 moment, conducting thyristor B2, B3, the capacitor A3 and former limit inducer L0 of precharge form discharge loop.Together
When, because the inductance L1 two ends of the circuit of induction effect first produce zooming voltage, until spark gap conducting.Such as Fig. 5 (b)
It is shown：Main current loop electric current is gradually shifted to the circuit of transfer current first.
T3 moment, main circuit current is transferred completely into the first circuit in transfer current circuit, shown in such as Fig. 5 (c).Subsequently
Mechanical switch contact two ends form fracture.
At the t4 moment, because spark gap conducting voltage is higher than system high voltage, transfer current circuital current drops quickly to zero,
Cut-off end.
At the t5 moment, transfer current circuit second circuit electric current is zero.
It is not required in transfer current circuit described in the disclosure only comprising a transformer, can is multiple transformers
And its serial or parallel connection combination of former limit lateral circuit, as shown in Figure 7, Figure 8.
Carry circuit disclosed in the present embodiment, including main current circuit and transfer current circuit.Transfer current circuit bag
Containing a kind of transformer, fast current transfer can be completed using the transfer current circuit, realize current limit or disjunction.Together
When, the capacitor in second circuit is isolated with straight-flow system, can be substantially reduced the electric pressure and volume of charhing unit, is carried
The reliability of height transfer.
Although being described above in association with accompanying drawing embodiment of this disclosure, the disclosure is not limited to above-mentioned
Specific embodiments and applications field, above-mentioned specific embodiment is only schematic, guiding rather than restricted
's.One of ordinary skill in the art is under the enlightenment of this specification and without departing from disclosure scope of the claimed protection
In the case of, the form of many kinds can also be made, these belong to the row of disclosure protection.
Claims (9)
1. a kind of transition magnetic field impulse induction type current carry circuit, it is characterised in that：The circuit includes main current circuit, transfer
Current circuit and access interface；
The main current circuit is used for continuous bearing electric current or interim conducting electric current；
The transfer current circuit is used to bear the electric current come from main current circuit transfer；
The access interface is used to be communicated with the outside to connect.
2. circuit according to claim 1, it is characterised in that：The main current circuit is by mechanical switch, power electronics device
One or more compositions in series or in parallel in part and current limiter.
3. circuit according to claim 2, it is characterised in that：The transfer current circuit is electric including the first circuit and second
Road；
First circuit includes secondary inductance device and spark gap, and the secondary inductance device is in series with spark gap；
The second circuit includes recharged capacitance, inductance, IGCT B1 to B4 and former limit inducer；
The recharged capacitance and inductance are in series and constitute tertiary circuit A3；
The IGCT B1 to B4 includes power semiconductor or triggered gap；
The IGCT B1 to B4 be in series composition loop after with former limit inductor in series；
The IGCT B1 to B4 and tertiary circuit A3 composition bridge circuits；
The former limit inducer and secondary inductance device composition transformer.
4. circuit according to claim 3, it is characterised in that：First circuit is in parallel with main current circuit, and described
Insulation or on-insulated is selected between two circuits and the first circuit.
5. circuit according to claim 3, it is characterised in that：The former limit inducer and secondary inductance device are air core inductor
Device or the inducer containing magnetic core, are made up of one or more inductance serial or parallel connections.
6. circuit according to claim 3, it is characterised in that：The spark gap is by Zinc-Oxide Arrester, tube type arrester
Or one or more connection in series-parallel of valve-type arrester.
7. circuit according to claim 2, it is characterised in that：The mechanical switch is included based on the common machine of spring mechanism
Tool switch, based on electromagnetic repulsion force high speed machine switch, based on high-speed electric expreess locomotive drive mechanical switch or based on explosion driving
One kind in high speed machine switch；
The current limiter includes the one kind in superconductive failure current limiter SFCL, liquid metal current limiter LMFCL, PTC current limiter.
8. circuit according to claim 3, it is characterised in that：The power semiconductor includes Power Diode Pumped, crystalline substance
One or more connection in series-parallel combinations in brake tube, IGBT, IGCT.
9. the either circuit according to claim 1-8, it is characterised in that：Under normal operating conditions, the transition magnetic field impulse
Electric current in induction type current carry circuit flows through from main current circuit, now, spark gap in the transfer current circuit,
IGCT B1 to B4 is off state, flows through without electric current in the first circuit and second circuit；
When the transition magnetic field impulse induction type current carry circuit needs action, by the electric current for measuring the main current circuit
Amplitude and rate of change, in determining in the transfer current circuit power semiconductor or triggered gap and main current circuit
Mechanical switch, power semiconductor whether action and corresponding action sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621083754.9U CN206117139U (en) | 2016-09-27 | 2016-09-27 | Transition magnetic pulse induction type current transfer circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621083754.9U CN206117139U (en) | 2016-09-27 | 2016-09-27 | Transition magnetic pulse induction type current transfer circuit |
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| CN206117139U true CN206117139U (en) | 2017-04-19 |
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ID=58521771
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| CN201621083754.9U Active CN206117139U (en) | 2016-09-27 | 2016-09-27 | Transition magnetic pulse induction type current transfer circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106549357A (en) * | 2016-11-11 | 2017-03-29 | 西安交通大学 | A kind of magnetic field impulse sensing transfer type dc circuit breaker and its using method |
| CN108599280A (en) * | 2018-05-02 | 2018-09-28 | 华北电力大学 | The online power-supply circuit of DC transmission system current limiter and system |
| CN111817266A (en) * | 2020-06-04 | 2020-10-23 | 西安交通大学 | Current-limiting hybrid direct-current circuit breaker |
-
2016
- 2016-09-27 CN CN201621083754.9U patent/CN206117139U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106549357A (en) * | 2016-11-11 | 2017-03-29 | 西安交通大学 | A kind of magnetic field impulse sensing transfer type dc circuit breaker and its using method |
| EP3321949A1 (en) * | 2016-11-11 | 2018-05-16 | Xi'an Jiaotong University | Dc circuit breaker based on magnetic induction commutation circuit |
| US10297402B2 (en) | 2016-11-11 | 2019-05-21 | Xi'an Jiaotong University | Magnetic pulse inducted transfer-type DC circuit breaker |
| CN108599280A (en) * | 2018-05-02 | 2018-09-28 | 华北电力大学 | The online power-supply circuit of DC transmission system current limiter and system |
| CN111817266A (en) * | 2020-06-04 | 2020-10-23 | 西安交通大学 | Current-limiting hybrid direct-current circuit breaker |
| CN111817266B (en) * | 2020-06-04 | 2021-07-06 | 西安交通大学 | Current-limiting hybrid direct-current circuit breaker |
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