CN106300308B - A kind of transition magnetic field impulse induction type current carry circuit and its application method - Google Patents
A kind of transition magnetic field impulse induction type current carry circuit and its application method Download PDFInfo
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- CN106300308B CN106300308B CN201610854068.5A CN201610854068A CN106300308B CN 106300308 B CN106300308 B CN 106300308B CN 201610854068 A CN201610854068 A CN 201610854068A CN 106300308 B CN106300308 B CN 106300308B
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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 its application method, and the carry circuit includes main current circuit and transfer current circuit.Transfer current circuit includes a kind of transformer, and can complete fast current using the transfer current circuit shifts, and realizes current limit or disjunction.Meanwhile the capacitor in second circuit and straight-flow system are isolated, and can be substantially reduced the voltage class and volume of charhing unit, be improved the reliability of transfer.The application method, which is entered, can realize 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, more particularly to a kind of transition magnetic field impulse induction type current carry circuit and its makes
Use method.
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 proposes higher requirement.Inside the various failures that power system may occur, maximum is endangered for power network,
Probability of happening it is very high be exactly short trouble.Because direct-current system short-circuit current peak value will rise to very in a short period of time
High level, therefore the excision and protection of its short trouble are the major issues that straight-flow system development faces.The difficulty of direct current disjunction
Point is mainly reflected in two aspects：First, DC current has natural zero-crossing point unlike alternating current, so current over-zero is non-
Often difficulty is, it is necessary to artificially create current zero-crossing point；Second, in short circuit current breaking course dc circuit breaker need to absorb it is huge
Energy.
The content of the invention
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 to come from main current circuit transfer；
The access interface is used to be connected with external system.
The disclosure further discloses a kind of transition magnetic impulse type electric current application method, and the application method comprises the following steps：
S1, according to the current amplitude and rate of change of main current circuit or according to the outside transfer instruction received, judge
There is short trouble, the mechanical switch into 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 forms discharge loop；Meanwhile secondary inductance device both ends produce the voltage risen, until arrester turns on, main current circuit
In electric current gradually to the first circuit shift；
S3, when in main circuit current electric current completely shift after, voltage is established at arrester both ends, can complete current limit
Or breaking function.
The beneficial effect of the disclosure：1) electric current directly can be transferred to by arrester by voltage caused by transformer, saved
The process for having gone electric current to be shifted 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 primary side side of transfer current current transformer
Road, it is possible to achieve bidirectional current shift, bridge circuit it is pressure-resistant low with cost.
Brief description of the drawings
Fig. 1 is the structural representation according to the transition magnetic field impulse induction type current carry circuit of 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 another unidirectional work according to the transition magnetic field impulse induction type current carry circuit of 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 to be turned according to the transition magnetic field impulse induction type current carry circuit of disclosure one embodiment corresponding to Fig. 5
Curent change curve map 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 according to the hybrid circuit breaker of the two-way disjunction after Fig. 8 optimizations in disclosure one embodiment
The step schematic diagram of method.
Embodiment
It is described in detail below be actually only it is exemplary and be not intended to limit application and use.In addition, it is not intended to
By any clear and definite of above technical field, background, brief overview or middle presentation described in detail below or the theoretical constraint implied.Remove
Non- clearly to have opposite description, otherwise word " comprising " and its different modifications, which 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 to 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 kept away
The series connection of thunder device is realized the fast transfer of electric current and cut-off, and eliminates and establishes voltage using capacitor or power electronic devices and will be
System electric current is transferred to the process of arrester.The transformer primary side lateral capacitance isolated by controlling with straight-flow system is discharged, and makes its production
Raw pulse current, while high voltage is induced so that arrester, which turns on, to form pulse with the transformer secondary side of straight-flow system connection
Electric current, main current circuit electric current is resisted using the electric current, make electric current from main current circuit to comprising arrester and transformer
Carry circuit shifts, and then completes cut-offfing or limiting for electric current using arrester.
In one embodiment, the main current circuit is by one in 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
The connection in series-parallel of one or more of mechanical switch, power electronic devices, current limiter, wire is combined, and 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 both ends.
In one embodiment, the transfer current circuit includes the first circuit and second circuit；
First circuit includes secondary inductance device and arrester, and the secondary inductance device is in series with arrester；
The second circuit includes recharged capacitance, inductance, IGCT B1-B4 and primary side inductor；
The recharged capacitance and inductance, which are in series, forms 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 primary side inductor in series；
The IGCT B1 to B4 and tertiary circuit A3 form bridge circuit；
The primary side inductor and secondary inductance device form 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 arrester.The first circuit that secondary inductance device, arrester are composed in series；By recharged capacitance or superconduction
The B1-B4 and primary side inductor L0 series connection groups that tertiary circuit A3, power semiconductor or the triggered gap of inductance composition form
Into second circuit, the primary side inductor and secondary inductance device form transformer, first circuit with main current circuit simultaneously
Connection, the second circuit can insulate with the first circuit, can also be on-insulated.
It is different according to the sense of current, bidirectional current is shifted to realize, is used in the primary side 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 the no electric current of second circuit flow through.
In one embodiment, first circuit is in parallel with main current circuit, the second circuit and the first circuit it
Between selection insulation or it is on-insulated.
Further, the primary side inductor and secondary inductance device are air-core inductor or the inductor containing magnetic core, by one
Individual or multiple inductance serial or parallel connection compositions.
Further, the arrester 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 based on high-speed electric expreess locomotive driving or the high speed machine switch based on explosion driving；
The current limiter includes one in superconductive failure current limiter SFCL, liquid metal current limiter LMFCL, PTC current limiter
Kind.
Further, the power semiconductor include Power Diode Pumped, IGCT, one in IGBT, IGCT 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, arrester, IGCT B1 to B4 in the transfer current circuit are off state, in the first circuit and second circuit
There is no electric current to flow through；
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, whether power semiconductor acts and corresponding action sequence.
In one embodiment, the disclosure discloses a kind of transition magnetic impulse type electric current application method, the application method
Comprise the following steps：
S1, according to the current amplitude and rate of change of main current circuit or according to the outside transfer instruction received, judge
There is short trouble, the mechanical switch into 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 forms discharge loop；Meanwhile secondary inductance device both ends produce the voltage risen, until arrester turns on, main current circuit
In electric current gradually to the first circuit shift；
S3, when in main circuit current electric current completely shift after, voltage is established at arrester both ends, can complete 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 arrester by the disclosure, directly establish and cut-off electricity
Pressure completes electric current and cut-offs and limit, and eliminates the pilot process that main circuit current shifts to capacitor or power electronic devices.
Meanwhile transformer primary side electric capacity charhing unit is isolated with straight-flow system, is substantially reduced the voltage class and volume of charhing unit, is carried
The reliability that height cut-offs.In addition, use power semiconductor or triggered gap in the primary side side of transfer current current transformer
Form bridge circuit, it is possible to achieve bidirectional current shift, bridge circuit it is pressure-resistant low with cost.The electric current application method of the disclosure
Circuit is simple, part is few, and the reaction time is short, improves the sensitivity 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 mechanical switch A1 in figure, IGCT B2 and the B3 direction of arrow.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 being connected with external system, the main current circuit and
Transfer current circuit in parallel.
The main current circuit can be that one or more of mechanical switch, power electronic devices and current limiter are gone here and there simultaneously
Connection combination.
The transfer current circuit includes the first circuit being composed in series by secondary inductance device L1 and arrester.By being pre-charged
The B1-B4 and primary side 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 primary side inductor and secondary inductance device form 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, to realize that bidirectional current shifts, used in the primary side 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 the no electric current of second circuit flow through.
When the transition magnetic field impulse induction type current carry circuit is applied to dc circuit breaker, and need its transfer current
When, power semiconductor device in the transfer current circuit is determined by the current amplitude and rate of change that measure the main current circuit
When whether part or mechanical switch, power semiconductor in triggered gap and main current circuit act and act accordingly
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 based on high-speed electric expreess locomotive driving or the high speed machine switch based on explosion driving；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 to Power Diode Pumped, IGCT, one in IGBT, IGCT or the combination of any number of serial or parallel connections.
Wherein, form the primary side inductor of transformer and secondary inductance device is air core inductor or the inductor containing magnetic core, it is former
Side and secondary can use one or more inductance in series or in parallel.The transfer current second circuit is by power power electricity
Sub- device or triggered gap B1-B4 forms bridge circuit.
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 primary side inductor L0, i1 are 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) gives during transfer current each
The road sense of current, specific each branch current direction for the corresponding moment each from t1 to t5.The electric current that Fig. 6 gives each branch road becomes
Change curve.
In one embodiment, referring to Fig. 9, included using described transition magnetic field impulse induction type current application method following
Step.
In first step S1, sub-gate signal is sent to main current loop mechanical switch A1.Prolong because mechanical switch action has
When, now not yet form fracture.
In second step S2, according to direction of current flow, controller is into the carry circuit second circuit in bridge-type
IGCT B2 to B4 two of which send Continuity signal.Tertiary circuit A3 and primary side inductor L0 forms discharge loop.Meanwhile by
Zooming voltage is produced in the secondary inductance device L1 both ends of the circuit of induction effect first, until arrester turns on.Principal current
Loop current gradually shifts to the circuit of transfer current first.After a period of time, whole electric currents are transferred to the circuit of transfer current first.
Fracture is formed between subsequent mechanical switch contact.
In third step S3, electric current shift after, certain voltage is established at arrester both ends, can complete current limit or
Person's breaking function.
In one embodiment, referring to Fig. 9, the direct current formed 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 exemplified by the right side goes out by a main current circuit left side：
System normal operation, mechanical switch closure, IGCT disconnect, and electric current is all from the mechanical switch in main current circuit
Flow through, as shown in Fig. 5 (a), wherein system nominal current is I.
Short trouble occurs for t1 moment, system, and main current circuit electric current is begun to ramp up, between t0 and t1, when more than system
During short-circuit threshold value, controller sends sub-gate signal to main current loop mechanical switch A1.Because mechanical switch action has delay, this
Shi Shangwei forms fracture.
T2 moment, conducting thyristor B2, B3, the capacitor A3 and primary side inductor L0 of precharge form discharge loop.Together
When, because the inductance L1 both ends of the circuit of induction effect first produce zooming voltage, until arrester turns on.Such as Fig. 5 (b)
Shown main current loop electric current gradually shifts to the circuit of transfer current first.
At the t3 moment, main circuit current is transferred completely into the first circuit in transfer current circuit, as shown in Fig. 5 (c).Then
Mechanical switch contact both ends form fracture.
At the t4 moment, because arrester 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 for only including a transformer in transfer current circuit described in the disclosure, can is multiple transformers
And its serial or parallel connection combination of primary side 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, it can complete fast current using the transfer current circuit and shift, realize current limit or disjunction.Together
When, capacitor in second circuit is isolated with straight-flow system, can be substantially reduced the voltage class and volume of charhing unit, be carried
The reliability of height transfer.
Although the embodiment of the disclosure is described above in association with accompanying drawing, the disclosure is not limited to above-mentioned
Specific embodiments and applications field, above-mentioned specific embodiment are only schematical, directiveness, rather than restricted
's.One of ordinary skill in the art is under the enlightenment of this specification and is not 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 (6)
- A kind of 1. 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, and the main current circuit is opened by the first machinery One or more of pass, the first power electronic devices and the first current limiter composition in series or in parallel；The transfer current circuit is used to bear the electric current to come from main current circuit transfer；The access interface is used to be communicated with the outside to connect；The transfer current circuit includes the first circuit and second circuit；First circuit includes secondary inductance device and arrester, and the secondary inductance device is in series with arrester；The second circuit includes recharged capacitance, inductance, IGCT B1 to B4 and primary side inductor；The recharged capacitance and inductance, which are in series, forms tertiary circuit A3；The negative electrode of the IGCT B1 is connected with IGCT B3 anode, and is connected to one end of primary side inductor, IGCT B1 With IGCT B2 differential concatenations, IGCT B3 and IGCT B4 differential concatenations, tertiary circuit A3 are connected to IGCT B1 and brilliant lock Between pipe B2 tie point and IGCT B3 and IGCT B4 tie point, IGCT B2 negative electrode and IGCT B4 anode phase Even, and it is connected to the other end of primary side inductor；The primary side inductor and secondary inductance device form transformer；Under normal operating conditions, the electric current in the transition magnetic field impulse induction type current carry circuit flows from main current circuit Cross, now, arrester, IGCT B1 to B4 in the transfer current circuit are off state, the first circuit and the second electricity Lu Zhongjun does not have electric current to flow through；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, determine mechanical switch, electric power electricity in the IGCT and main current circuit in the transfer current circuit Whether sub- device acts and corresponding action sequence.
- 2. circuit according to claim 1, it is characterised in that：First circuit is in parallel with main current circuit, and described Selection insulation or on-insulated between two circuits and the first circuit.
- 3. circuit according to claim 1, it is characterised in that：The primary side inductor and secondary inductance device are air core inductor Device or the inductor containing magnetic core, it is made up of one or more inductance serial or parallel connections.
- 4. circuit according to claim 1, it is characterised in that：The arrester is by Zinc-Oxide Arrester, tube type arrester Or one or more connection in series-parallel of valve-type arrester.
- 5. circuit according to claim 1, it is characterised in that：The mechanical switch includes the common machine based on spring mechanism Tool switch, based on electromagnetic repulsion force high speed machine switch, based on high-speed electric expreess locomotive driving mechanical switch or based on explosion driving One kind in high speed machine switch；The current limiter includes one kind in superconductive failure current limiter SFCL, liquid metal current limiter LMFCL, PTC current limiter.
- 6. a kind of application method of the transition magnetic field impulse induction type current carry circuit as any one of claim 1-5, its It is characterised by, the application method comprises the following steps：S1, according to the current amplitude and rate of change of main current circuit or according to the outside transfer instruction received, when judging Existing short trouble, the mechanical switch into main current circuit send sub-gate signal；S2, according to the transition magnetic field impulse induction type current carry circuit direction of current flow, conducting thyristor B2 and IGCT B3, or conducting thyristor B1 and IGCT B4, discharge loop is formed with tertiary circuit A3 and inductance, meanwhile, secondary inductance device Both ends produce the voltage risen, until arrester turns on, the electric current in main current circuit gradually shifts to the first circuit；S3, when in main current circuit electric current completely shift after, voltage is established at arrester both ends, can complete 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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| 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 |
| CN107276058B (en) * | 2017-06-05 | 2019-12-03 | 西安交通大学 | A kind of induced field current shift module and its electric current transfer method |
| 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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| CN105024369B (en) * | 2015-06-29 | 2019-09-17 | 清华大学 | A kind of current diverting device and method suitable for hybrid dc circuit breaker |
| CN105186443B (en) * | 2015-10-21 | 2018-03-20 | 华中科技大学 | A kind of automatic charging type forces zero passage high voltage DC breaker |
| CN105281289B (en) * | 2015-11-20 | 2018-05-04 | 中国船舶重工集团公司第七一二研究所 | A kind of two-way hybrid dc circuit breaker and its control method |
| CN105305372B (en) * | 2015-11-20 | 2018-05-04 | 中国船舶重工集团公司第七一二研究所 | A kind of high voltage DC breaker and its control method |
| CN105552827B (en) * | 2015-12-10 | 2018-08-14 | 西安交通大学 | Impressed current carry circuit and its electric current transfer method |
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