CN106300308A - A kind of transition magnetic field impulse induction type current carry circuit and using method thereof - Google Patents
A kind of transition magnetic field impulse induction type current carry circuit and using method thereof Download PDFInfo
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- CN106300308A CN106300308A CN201610854068.5A CN201610854068A CN106300308A CN 106300308 A CN106300308 A CN 106300308A CN 201610854068 A CN201610854068 A CN 201610854068A CN 106300308 A CN106300308 A CN 106300308A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
- H02H9/025—Current limitation using field effect transistors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
Abstract
The disclosure discloses a kind of transition magnetic field impulse induction type current carry circuit and using method thereof, and described carry circuit includes main current circuit and transfer current circuit.Transfer current circuit comprises a kind of transformer, uses this transfer current circuit can complete fast current transfer, it is achieved electric current limits or disjunction.Meanwhile, the capacitor in second circuit and the isolation of straight-flow system, electric pressure and the volume of charhing unit can be substantially reduced, improve the reliability of transfer.Described using method enters to be capable of various engineering application function, such as dc circuit breaker, exchange fast chopper, AC and DC current limiter.
Description
Technical field
The disclosure belongs to electronic circuit field, particularly to a kind of transition magnetic field impulse induction type current carry circuit and make
Use method.
Background technology
Along with the continuous lifting of direct current power system capacity, direct current electric transmission and transformation technology is flourish, also the most steady to system
Fixed and safety is had higher requirement.In power system it may happen that various faults inside, for electrical network harm maximum,
What probability of happening was the highest is exactly short trouble.Owing to direct-current system short-circuit current peak value will rise to very in a short period of time
High level, therefore excision and the protection of its short trouble is that straight-flow system develops the major issue faced.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-
Often difficulty, needs artificially to create current zero-crossing point；Two is that in short circuit current breaking course, dc circuit breaker needs to absorb huge
Energy.
Summary of the invention
Based on this, the disclosure discloses a kind of transition magnetic field impulse induction type current carry circuit, and described circuit includes main electricity
Current circuit, transfer current circuit and access interface；
Described main current circuit is for continuous bearing electric current or turns on electric current temporarily；
Described transfer current circuit shifts, from main current circuit, the electric current come for bearing；
Described access interface is for being connected with external system.
The disclosure further discloses a kind of transition magnetic impulse type electric current using method, and described using method comprises the following steps:
S1, according to the current amplitude of main current circuit and rate of change or according to the outside transfer instruction received, it is judged that
Short trouble occur, the mechanical switch in main current circuit sends sub-gate signal；
S2, according to direction of current flow, any two IGCT in conducting thyristor B1 to B4, with tertiary circuit A3 and
Inductance composition discharge loop；Meanwhile, secondary inductance device two ends produce the voltage risen, until spark gap conducting, main current circuit
In electric current gradually to first circuit transfer；
S3, after the electric current in main circuit current shifts completely, voltage is set up at spark gap two ends, it is possible to complete electric current limit
Or breaking function.
The beneficial effect of the disclosure: 1) electric current directly can be transferred to spark gap by the voltage that produced by transformer, saves
Go the process that electric current shifts to capacitor or power electronic devices, current limliting or cut-off speed reliability far above traditional
Technology；
2) disclosure is capable of the isolation of electric capacity charhing unit and straight-flow system, is substantially reduced the voltage etc. of charhing unit
Level and volume, improve Reliability of Microprocessor；
3) the former avris at transfer current current transformer uses power semiconductor or triggered gap composition bridge-type electricity
Road, it is possible to achieve bidirectional current shifts, the pressure and low cost of bridge circuit.
Accompanying drawing explanation
Fig. 1 is the structural representation of the transition magnetic field impulse induction type current carry circuit according to one embodiment of the disclosure；
When Fig. 2 is the one-way only operation of the transition magnetic field impulse induction type current carry circuit according to one embodiment of the disclosure
Structural representation；
Fig. 3 is the unidirectional work of another kind of the transition magnetic field impulse induction type current carry circuit according to one embodiment of the disclosure
Structural representation when making；
Fig. 4 is the transition magnetic field impulse induction type current carry circuit current signature signal according to one embodiment of the disclosure
Figure；
Principal current when Fig. 5 (a) is the transfer current of the magnetic coupling conversion type carry circuit according to one embodiment of the disclosure
The current direction schematic diagram of circuit；
Principal current when Fig. 5 (b) is the transfer current of the magnetic coupling conversion type carry circuit according to one embodiment of the disclosure
The current direction schematic diagram of circuit and transfer current circuit；
Transfer electricity when Fig. 5 (c) is the transfer current of the magnetic coupling conversion type carry circuit according to one embodiment of the disclosure
The current direction schematic diagram of current circuit；
Fig. 6 is transition magnetic field impulse induction type current carry circuit the turning corresponding to Fig. 5 according to one embodiment of the disclosure
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 one embodiment of the disclosure；
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 of the two-way disjunction after optimizing according to Fig. 8 in one embodiment of the disclosure
The step schematic diagram of method.
Detailed description of the invention
Described in detail below be the most only exemplary and be not intended to limit application and use.Additionally, be not intended to
By above technical field, background, brief overview or described in detail below in present any clearly or the theory of hint retrains.Remove
Non-have contrary description clearly, and otherwise word " includes " and different modification should be understood to imply and includes described portion
Part but be not excluded for any miscellaneous part.
In one embodiment, the disclosure discloses a kind of transition magnetic field impulse induction type current carry circuit, described circuit
Including main current circuit, transfer current circuit and access interface；
Described main current circuit is for continuous bearing electric current or turns on electric current temporarily；
Described transfer current circuit shifts, from main current circuit, the electric current come for bearing；
Described access interface is for being 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, utilizes transformer and keeps away
The series connection of thunder device realizes the fast transfer of electric current and cut-offs, and eliminates and utilizes capacitor or power electronic devices to set up voltage by system
System electric current is transferred to the process of spark gap.By controlling the transformer former avris electric capacity electric discharge with straight-flow system isolation so that it is produce
Raw pulse current, the transformer secondary side being simultaneously connected with straight-flow system induces high voltage and makes spark gap conducting form pulse
Electric current, utilizes this electric current to resist main current circuit electric current, makes electric current from main current circuit to comprising spark gap and transformer
Carry circuit shifts, and then utilizes spark gap to complete cut-offfing or limiting of electric current.
In one embodiment, described 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, described main current circuit can be with continuous bearing or turn on electric current temporarily, and main current circuit comprises
One or more connection in series-parallel combination in mechanical switch, power electronic devices, current limiter, wire, main current circuit is as this specially
Being transferred part in profit carry circuit, its two ends are drawn as this patent access interface to external system.
In one embodiment, described transfer current circuit includes the first circuit and second circuit；
Described first circuit includes that secondary inductance device and spark gap, described secondary inductance device are in series with spark gap；
Described second circuit includes recharged capacitance, inductance, IGCT B1-B4 and former limit inducer；
Described recharged capacitance and inductance are in series and form tertiary circuit A3；
Described IGCT B1 to B4 includes power semiconductor or triggered gap；
Described IGCT B1 to B4 is in series and forms Hou Yuyuan limit, loop inductor in series；
Described IGCT B1 to B4 and tertiary circuit A3 forms bridge circuit；
Described former limit inducer and secondary inductance device composition transformer.
In the present embodiment, described 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 tertiary circuit A3 of inductance composition, power semiconductor or the B1-B4 of triggered gap composition and former limit inducer L0 series connection group
The second circuit become, described former limit inducer and secondary inductance device composition transformer, described first circuit is with main current circuit also
Connection, described second circuit and the first circuit can insulate, it is also possible to on-insulated.
Different according to the sense of current, for realizing transfer bidirectional current, the former avris at transfer current current transformer uses
Power semiconductor or triggered gap composition bridge circuit.
Before electric current transfer, electric current flows through in mechanical switch A1 from described main current circuit；Now, described transfer current
In circuit, power electronic devices, triggering switching device and IGCT B1 to B4 are off state, in described transfer current circuit
First circuit and second circuit all do not have electric current to flow through.
In one embodiment, described first circuit is in parallel with main current circuit, described second circuit and the first circuit it
Between select insulation or on-insulated.
Further, described 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, described spark gap by Zinc-Oxide Arrester, tube type arrester or one of valve-type arrester or
Multiple connection in series-parallel.
Further, described mechanical switch includes standard machinery based on spring mechanism switch, height based on electromagnetic repulsion force
One in speed mechanical switch, the mechanical switch driven based on high-speed electric expreess locomotive or high speed machine based on explosion driving switch；
Described current limiter includes in superconductive failure current limiter SFCL, liquid metal current limiter LMFCL, PTC current limiter
Kind.
Further, during described power semiconductor includes Power Diode Pumped, IGCT, IGBT, IGCT one or
Multiple connection in series-parallel are combined.
In one embodiment, under normal operating conditions, the electric current in described circuit flows through from main current circuit, this
Time, spark gap, IGCT B1 to B4 in described transfer current circuit are off state, in the first circuit and second circuit all
Electric current is not had to flow through；
When described transition magnetic field impulse induction type current carry circuit needs action, by measuring described main current circuit
Current amplitude and rate of change determine in described transfer current circuit power semiconductor or triggered gap and main 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, described using method
Comprise the following steps:
S1, according to the current amplitude of main current circuit and rate of change or according to the outside transfer instruction received, it is judged that
Short trouble occur, the mechanical switch in main current circuit sends sub-gate signal；
S2, according to direction of current flow, any two IGCT in conducting thyristor B1 to B4, with tertiary circuit A3 and
Inductance composition discharge loop；Meanwhile, secondary inductance device two ends produce the voltage risen, until spark gap conducting, main current circuit
In electric current gradually to first circuit transfer；
S3, after the electric current in main circuit current shifts completely, voltage is set up at spark gap two ends, it is possible to complete electric current limit
Or breaking function.
Method described in the present embodiment can realize various engineering application function, as dc circuit breaker, exchange are 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 sets up and cut-offs electricity
Press electric current to cut-off and limited, having eliminated the pilot process that main circuit current shifts to capacitor or power electronic devices.
Meanwhile, transformer former limit electric capacity charhing unit is isolated with straight-flow system, is substantially reduced electric pressure and the volume of charhing unit, carries
The reliability that height cut-offs.Additionally, the former avris at transfer current current transformer uses power semiconductor or triggered gap
Composition bridge circuit, it is possible to achieve bidirectional current shifts, the pressure and low cost of bridge circuit.The electric current using method of the disclosure
Circuit is simple, parts are few, and the response time is short, improves susceptiveness and the reliability of actual application.
In one embodiment, present disclosure discloses a kind of transition magnetic field impulse induction type current carry circuit and user thereof
Method, the transition magnetic field impulse induction type current carry circuit structural representation according to one embodiment of the disclosure as shown in Figure 1, its
Including main current circuit and transfer current circuit.In order to better illustrate carry circuit work process, there is shown herein direct current
Electric current is according to the direction schematic diagram of a direction inflow and outflow disclosure, as shown in Figure 2.In Fig. 2, power that may be present is partly led
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
Schematic diagram according to the other direction inflow and outflow disclosure.
Seeing 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 being connected with external system, described main current circuit and
Transfer current circuit in parallel.
Described main current circuit can be the one or more strings in mechanical switch, power electronic devices and current limiter also
Joint group closes.
Described transfer current circuit includes the first circuit being composed in series by secondary inductance device L1 and spark gap.By being pre-charged
Electric capacity or the tertiary circuit A3 of superconduction inductance composition, power semiconductor or the B1-B4 of triggered gap composition and former limit inductance
The second circuit that device L0 is composed in series, described former limit inducer and secondary inductance device composition transformer, described first circuit and master
Current circuit is in parallel, and described second circuit and the first circuit can insulate.
Different according to the sense of current, for realizing bidirectional current transfer, the former avris at transfer current current transformer uses
Power semiconductor or triggered gap composition bridge circuit.
Under normal operating conditions, electric current flows through in mechanical switch A1 from described main current circuit；Now, described transfer electricity
In current circuit, power electronic devices, triggering switching device and IGCT B1 to B4 are off state, described transfer current circuit
In the first circuit and second circuit all do not have electric current to flow through.
When described transition magnetic field impulse induction type current carry circuit is applied to dc circuit breaker and it needs to its transfer current
Time, determine power semiconductor device in described transfer current circuit by the current amplitude and rate of change measuring described main current circuit
When the whether action of mechanical switch in part or triggered gap and main current circuit, power semiconductor and corresponding action
Sequence.
Wherein, described mechanical switch may be based on the standard machinery switch of spring mechanism, high speed machine based on electromagnetic repulsion force
Tool switch, the mechanical switch driven based on high-speed electric expreess locomotive or high speed machine based on explosion driving switch；Described current limiter includes
But it is not limited to superconductive failure current limiter SFCL, liquid metal current limiter LMFCL, PTC current limiter；Described power semiconductor bag
One or the combination of any number of serial or parallel connection included but be not limited in Power Diode Pumped, IGCT, IGBT, IGCT.
Wherein, the former limit inducer of composition transformer and secondary inductance device are air core inductor or the inducer containing magnetic core, former
Limit and secondary can use one or more inductance in series or in parallel.Described transfer current second circuit is by power power electricity
Sub-device or triggered gap B1-B4 form bridge circuit.
Fig. 4 gives transfer current circuit each branch current mark, and wherein i0 flows through in being transfer current second circuit
Electric current on three-circuit A3 and former limit inducer L0, i1 is the electric current flowing through main current circuit, and i2 is transfer current the first circuit
In with the electric current of secondary inductance device L1.
In main current circuit, as a example by electric current flows from left to right, Fig. 5 (a) to (c) gives during transfer current each
The road sense of current, concrete for correspondence each branch current direction in each moment from t1 to t5.Fig. 6 gives the electric current of each branch road and becomes
Change curve.
In one embodiment, see Fig. 9, use described transition magnetic field impulse induction type current using method to include following
Step.
In first step S1, send sub-gate signal to main current loop mechanical switch A1.Prolong owing to mechanical switch action has
Time, the most not yet form fracture.
In second step S2, according to direction of current flow, controller in described carry circuit second circuit in bridge-type
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 induction effect the first circuit, until spark gap conducting.Principal current
Loop current gradually shifts to transfer current the first circuit.After a period of time, whole electric currents are transferred to transfer current the first circuit.
Fracture is formed subsequently between mechanical switch contact.
In third step S3, electric current transfer after, certain voltage is set up at spark gap two ends, can complete electric current limit or
Person's breaking function.
In one embodiment, seeing Fig. 9, the direct current utilizing transition magnetic field impulse induction type current carry circuit to be constituted breaks
The concrete operating procedure of road device includes the following aspects, and electric current enters as a example by the right side goes out by a main current circuit left side:
System is properly functioning, and mechanical switch closes, and IGCT disconnects, electric current all mechanical switchs from main current circuit
Flowing through, as shown in Fig. 5 (a), wherein system nominal current is I.
In the t1 moment, system is short-circuited fault, and main current circuit electric current begins to ramp up, between t0 and t1, when exceeding system
During short-circuit threshold value, controller sends sub-gate signal to main current loop mechanical switch A1.Owing to mechanical switch action has time delay, this
Shi Shangwei forms fracture.
In the t2 moment, conducting thyristor B2, B3, the capacitor A3 of precharge and former limit inducer L0 forms discharge loop.With
Time, owing to the inductance L1 two ends of induction effect the first circuit produce zooming voltage, until spark gap conducting.Such as Fig. 5 (b)
Shown main current loop electric current gradually shifts to transfer current the first circuit.
In the t3 moment, main circuit current is transferred completely into the first circuit in transfer current circuit, as shown in Fig. 5 (c).Subsequently
Mechanical switch contact two ends form fracture.
In the t4 moment, owing to spark gap conducting voltage is higher than system high voltage, transfer current circuital current drops quickly to zero,
Cut-off end.
In the t5 moment, transfer current circuit second circuit electric current is zero.
Transfer current circuit described in the disclosure is not required for only comprise a transformer, can be multiple transformer
And the serial or parallel connection combination of former avris 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, use this transfer current circuit can complete fast current transfer, it is achieved electric current limits or disjunction.With
Time, the capacitor in second circuit and the isolation of straight-flow system, electric pressure and the volume of charhing unit can be substantially reduced, carry
The reliability of high transfer.
Although being described above in association with accompanying drawing embodiment of this disclosure, but the disclosure being not limited to above-mentioned
Specific embodiments and applications field, above-mentioned specific embodiments the most schematic, guiding rather than restricted
's.Those 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, it is also possible to making a variety of forms, these belong to the row of disclosure protection.
Claims (10)
1. a transition magnetic field impulse induction type current carry circuit, it is characterised in that: described circuit includes main current circuit, transfer
Current circuit and access interface；
Described main current circuit is for continuous bearing electric current or turns on electric current temporarily；
Described transfer current circuit shifts, from main current circuit, the electric current come for bearing；
Described access interface is used for and is connected externally to connect.
Circuit the most according to claim 1, it is characterised in that: preferably, described main current circuit is by mechanical switch, electric power
Composition one or more in series or in parallel in electronic device and current limiter.
Circuit the most according to claim 2, it is characterised in that: described transfer current circuit includes the first circuit and the second electricity
Road；
Described first circuit includes that secondary inductance device and spark gap, described secondary inductance device are in series with spark gap；
Described second circuit includes recharged capacitance, inductance, IGCT B1 to B4 and former limit inducer；
Described recharged capacitance and inductance are in series and form tertiary circuit A3；
Described IGCT B1 to B4 includes power semiconductor or triggered gap；
Described IGCT B1 to B4 is in series and forms Hou Yuyuan limit, loop inductor in series；
Described IGCT B1 to B4 and tertiary circuit A3 forms bridge circuit；
Described former limit inducer and secondary inductance device composition transformer.
Circuit the most according to claim 3, it is characterised in that: described first circuit is in parallel with main current circuit, and described
Select between two circuit and the first circuit to insulate or on-insulated.
Circuit the most according to claim 3, it is characterised in that: described former limit inducer and secondary inductance device are air core inductor
Device or the inducer containing magnetic core, be made up of one or more inductance serial or parallel connections.
Circuit the most according to claim 3, it is characterised in that: described spark gap is by Zinc-Oxide Arrester, tube type arrester
Or one or more connection in series-parallel of valve-type arrester.
Circuit the most according to claim 2, it is characterised in that: described mechanical switch includes common machine based on spring mechanism
Tool switch, high speed machine based on electromagnetic repulsion force switch, mechanical switch or based on explosion driving based on high-speed electric expreess locomotive driving
One in high speed machine switch；
Described current limiter includes the one in superconductive failure current limiter SFCL, liquid metal current limiter LMFCL, PTC current limiter.
Circuit the most according to claim 3, it is characterised in that: described power semiconductor includes Power Diode Pumped, crystalline substance
One or more connection in series-parallel combination in brake tube, IGBT, IGCT.
9. according to the either circuit described in claim 1-8, it is characterised in that: under normal operating conditions, described transition magnetic field impulse
Electric current in induction type current carry circuit flows through from main current circuit, now, spark gap in described transfer current circuit,
IGCT B1 to B4 is off state, does not all have electric current to flow through in the first circuit and second circuit；
When described transition magnetic field impulse induction type current carry circuit needs action, by measuring the electric current of described main current circuit
Amplitude and rate of change, determine in described transfer current circuit in power semiconductor or triggered gap and main current circuit
The whether action of mechanical switch, power semiconductor and corresponding action sequence.
10. a transition magnetic impulse type electric current using method, it is characterised in that described using method comprises the following steps:
S1, according to the current amplitude of main current circuit and rate of change or according to the outside transfer instruction received, when judging
Existing short trouble, the mechanical switch in main current circuit sends sub-gate signal；
S2, according to described circuital current flow direction, two IGCTs in conducting thyristor B1 to B4, with tertiary circuit A3 and
Inductance composition discharge loop, meanwhile, secondary inductance device two ends produce the voltage risen, until spark gap conducting, main current circuit
In electric current gradually to first circuit transfer；
S3, after the electric current in main circuit current shifts completely, voltage is set up at spark gap two ends, it is possible to complete electric current limit or
Breaking function.
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| CN201610854068.5A CN106300308B (en) | 2016-09-27 | 2016-09-27 | A kind of transition magnetic field impulse induction type current carry circuit and its application method |
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| CN107276058A (en) * | 2017-06-05 | 2017-10-20 | 西安交通大学 | A kind of induced field current shift module and its electric current transfer method |
| CN112713541A (en) * | 2020-12-11 | 2021-04-27 | 平高集团有限公司 | Coupling device for direct current load switch |
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| CN112713541B (en) * | 2020-12-11 | 2023-06-30 | 平高集团有限公司 | Coupling device for direct current load switch |
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| CN106300308B (en) | 2017-12-29 |
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