CN106207991A - A kind of bidirectional high-pressure DC hybrid chopper - Google Patents

A kind of bidirectional high-pressure DC hybrid chopper Download PDF

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Publication number
CN106207991A
CN106207991A CN201610599245.XA CN201610599245A CN106207991A CN 106207991 A CN106207991 A CN 106207991A CN 201610599245 A CN201610599245 A CN 201610599245A CN 106207991 A CN106207991 A CN 106207991A
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CN
China
Prior art keywords
circuit
current
power semiconductor
chopper
speed
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Application number
CN201610599245.XA
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Chinese (zh)
Inventor
荣命哲
吴益飞
吴翊
杨飞
纽春萍
胡杨
徐丹
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西安交通大学
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Priority to CN201610599245.XA priority Critical patent/CN106207991A/en
Publication of CN106207991A publication Critical patent/CN106207991A/en

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/267Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for parallel lines and wires
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/268Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for dc systems

Abstract

A kind of bidirectional high-pressure DC hybrid chopper, including main current circuit, transfer current circuit and energy dissipation circuit;Wherein, main current circuit, transfer current circuit and energy dissipation circuit are in parallel;Transfer current electricity routing circuit 1 to circuit 5 forms bridge circuit, wherein: circuit 1 is in parallel with main current circuit after connecting with circuit 4;Described circuit 1 to circuit 4 is connected with high-speed disconnecting switch by power semiconductor respectively, and resistance to voltage levels and the service life of power semiconductor of circuit are greatly improved;Simultaneously, described transfer current circuit uses bridge architecture, only unidirectional have with one group and can realize two-way disjunction to electric current by turn-off capacity power semiconductor, relative to existing design, minimum save 50% unidirectional have can turn-off capacity power semiconductor, effectively reduce breaker control complexity and manufacturing cost.

Description

A kind of bidirectional high-pressure DC hybrid chopper
Technical field
The invention belongs to primary cut-out field, be specifically related to a kind of bidirectional high-pressure DC hybrid chopper.
Background technology
The hybrid circuit-breaker being made up of with power semiconductor high speed machine switch has that discharge capacity is big, it is fast to turn off The advantages such as degree is fast, have become as hicap and cut-off the study hotspot in field.Use the power semiconductor with full control function The hybrid dc circuit breaker scheme of device breaking current has breaking speed faster compared to other hybrid scheme, is more conducive to The advantage of disjunction rated current.But when using full-control type power semiconductor disjunction bidirectional current, its electric current commutating circuit Typically requiring two-way full-control type power semiconductor cut-off current, control complexity, with relatively costly, constrain it and promotes And application.Especially with the raising of direct-current transmission voltage grade, chopper is when disjunction short circuit current, when system overvoltage surpasses The pressure scope of overpower semiconductor device, power semiconductor has the possibility punctured, and causes the damage of equipment, reduces disconnected The service life of road device.
Summary of the invention
The deficiency existed for above-mentioned prior art or defect, it is an object of the invention to provide a kind of two-way height pressure DC hybrid chopper;
Described chopper includes that main current circuit, transfer current circuit, energy dissipation circuit, the first incoming end and second connect Enter end;
Described main current circuit is for by the electric current under normal operating conditions;
Described transfer current circuit is for when there is short-circuit current, it is achieved short-circuit current is from main current circuit Transfer;
Described energy dissipation circuit is for the energy of the short-circuit current that dissipates;
Described first incoming end and the second incoming end are used for flowing into or out electric current.
Chopper of the present invention turns on according to certain sequential by controlling the power semiconductor of transfer current circuit, Can realize high speed machine switch contact to open without arc, between contact, dielectric recovery property is good, significantly improves the reliability cut-off.Logical Cross connecting of power semiconductor in transfer current branch road and disconnecting switch, be greatly enhanced the resistance to setting-out of this branch road Flat, improve the service life of power semiconductor simultaneously.Transfer current circuit of the present invention uses bridge architecture, only uses one group Unidirectional have and just can realize the two-way disjunction to electric current by turn-off capacity power semiconductor, relative to existing design, Save less 50% unidirectional have can turn-off capacity power semiconductor, effectively reduce breaker control complexity and system Cause this.
Accompanying drawing explanation
Fig. 1 is chopper body construction schematic diagram in one embodiment of the invention;
A kind of structural representation when Fig. 2 is chopper one-way only operation in one embodiment of the invention;
Another kind of structural representation when Fig. 3 is chopper one-way only operation in one embodiment of the invention;
Fig. 4 is energy dissipation circuit VA characteristic curve figure in one embodiment of the invention;
Fig. 5 is that in one embodiment of the invention, hybrid circuit breaker puts into procedure structure schematic diagram;
Transfer current circuital current mark schematic diagram when Fig. 6 is breaking current in one embodiment of the invention;
Sense of current when system is properly functioning when Fig. 7 (a) is breaking current in one embodiment of the invention;Fig. 7 (b) is In one embodiment of the invention during breaking current electric current to the first power semiconductor A1, the 3rd power semiconductor A3, 5th power semiconductor A5 branch road transfer process sense of current;Fig. 7 (c) is breaking current in one embodiment of the invention Time electric current be completely transferred to the first power semiconductor A1, the 3rd power semiconductor A3, the 5th power semiconductor Direction during A5 branch road;When Fig. 7 (d) is breaking current in one embodiment of the invention, electric current is to energy dissipation circuit transfer process Sense of current;When Fig. 7 (e) is breaking current in one embodiment of the invention, electric current is completely transferred to energy dissipation branch road Direction;
Sense of current when Fig. 8 (a) is that in one embodiment of the invention, system is properly functioning;Fig. 8 (b) is the present invention one In embodiment, electric current is to the first power semiconductor A1, the 3rd power semiconductor A3, the 5th power semiconductor A5 Branch road transfer process sense of current;Fig. 8 (c) is that in one embodiment of the invention, electric current is completely transferred to the first power semiconductor Device A1, the 3rd power semiconductor A3, direction during the 5th power semiconductor A5 branch road;Fig. 8 (d) is the present invention one In individual embodiment, electric current is to energy dissipation circuit transfer process sense of current;Fig. 8 (e) is electric current in one embodiment of the invention It is completely transferred to direction during energy dissipation branch road;
When Fig. 9 is breaking current in one embodiment of the invention, corresponding to Fig. 7,8, curent change curve chart in each circuit;
Figure 10 is that the one of one embodiment of the invention is embodied as instance graph, and in shown example, main current circuit is by height Speed mechanical switch FCB and IGBT combined serial realize;
Figure 11 is that the one of one embodiment of the invention is embodied as instance graph, and in shown example, main current circuit is by height Speed mechanical switch FCB and voltage generator series connection realize, and the 5th power semiconductor A5 props up route multiple IGBT module series connection Realize;
Figure 12 is that the one of one embodiment of the invention is embodied as instance graph, and in shown example, energy dissipation circuit is straight Connect and the 5th power semiconductor A5 branch circuit parallel connection.
Detailed description of the invention
The detailed description of the invention of the present invention is described below in conjunction with accompanying drawing.
In one embodiment, the invention discloses the DC hybrid chopper that a kind of two-way height is pressure, described open circuit Device includes main current circuit, transfer current circuit, energy dissipation circuit, the first incoming end and the second incoming end;
Described main current circuit is for by the electric current under normal operating conditions;
Described transfer current circuit is for when there is short-circuit current, it is achieved short-circuit current is from main current circuit Transfer;
Described energy dissipation circuit is for the energy of the short-circuit current that dissipates;
Described first incoming end and the second incoming end flow into and access or flow out electric current.
In the present embodiment, breaker body structural representation as shown in Figure 1, including main current circuit, transfer current Circuit and energy dissipation circuit.In order to better illustrate chopper breaking course, give as shown in Figure 2 circuit breaker current from The structural representation of system access end S1 to system access end S2, the hybrid circuit breaker comprised for embodying the present embodiment has double To function, Fig. 3 provides the electric current structural representation from system access end S2 to system access end S1.In Fig. 2 with Fig. 3, power is partly led The sense of current of body device is consistent with the direction of arrow of A0-A5 in figure.Described chopper can accept from S1-S2 or S2-S1 System power, be two-way chopper.
In one embodiment, described main current circuit includes that high speed machine switchs FCB and voltage generator A0;
Described high speed machine switch FCB is connected with voltage generator A0.
In one embodiment, described transfer current circuit includes the first circuit, second circuit, tertiary circuit, the 4th electricity Road and the 5th circuit;
Described first circuit and the 4th circuit connected in series, second circuit connects with tertiary circuit, the first circuit and the 4th circuit Between end points, and be connected between the end points between second circuit with tertiary circuit and have the 5th circuit.
In the present embodiment, described first circuit and the 4th circuit connected in series composition one or four carry circuit branch roads, described 1 Branch road and main circuit circuit in parallel;Described second circuit and tertiary circuit are composed in series two or three carry circuit branch roads, and described 23 Branch road and main circuit circuit in parallel.
In one embodiment, described first circuit includes the first power semiconductor A1 and the first high-speed disconnecting switch K1;
Second circuit includes the second power semiconductor A2 and the second high-speed disconnecting switch K2;
Tertiary circuit includes the 3rd power semiconductor A3 and the 3rd high-speed disconnecting switch K3;
4th circuit includes the 4th power semiconductor A4 and the 4th high-speed disconnecting switch K4;
5th circuit includes having can the power semiconductor A5 of cut-off current ability;
Described first branch road and the 4th branch road are in parallel with described main current circuit after connecting;
Described second branch road and the 3rd branch road are in parallel with described main current circuit after connecting.
In the present embodiment, as shown in Figure 1, 2, 3: described transfer current circuit includes power semiconductor A1 and high speed The circuit 1 of disconnecting switch K1 composition, the circuit 2 of power semiconductor A2 and high-speed disconnecting switch K2 composition, power semiconductor The circuit 3 of device A3 and high-speed disconnecting switch K3 composition, the circuit 4 of power semiconductor A4 and high-speed disconnecting switch K4 composition And the circuit 5 of power semiconductor A5 composition.
Wherein: described circuit 1 and described circuit 4 are composed in series transfer current circuit branch 1-4, with described main current circuit In parallel;Described circuit 2 and described circuit 3 are composed in series transfer current circuit branch 2-3, in parallel with described main current circuit.
End points between described circuit 1 and described circuit 4, and the end points between described circuit 2 and described circuit 3, these are two years old The circuit 5 of described power semiconductor A5 composition is then connected between individual end points.
In one embodiment, described voltage generator A0 is two-way admittance, and is the device with Voltage Establishment ability, First, second, third, fourth, the 5th power semiconductor A1-A5 is one-way conduction power semiconductor.
In the present embodiment, described voltage generator A0 be two-way admittance and there is Voltage Establishment ability can switch-off power Semiconductor device or a combination thereof, or there is the device of bi-directional voltage capacity-building for superconductive current limiter, fuse, blast current limiter etc. Part or device.Can turn-off power semiconductor device including, but not limited to any one in IGBT, IGCT, GTO or arbitrarily Multiple combinations.
Described power semiconductor A1 to A4 is the power electronic devices with one-way conduction ability, including but do not limit to Any one in Power Diode Pumped, IGCT or any number of combination.
In one embodiment, when described chopper in normal operation, electric current flows through from described main current circuit, Voltage generator A0 is in the conduction state, and now transfer current circuit and energy dissipation circuit do not have electric current to flow through.
In one embodiment, when the fault that is short-circuited, when needing disjunction short circuit current:
If be detected that the direction of short circuit current is to flow at the first incoming end S1, when flowing out at the second incoming end S2, will Described second high-speed disconnecting switch K2 and the 4th high-speed disconnecting switch K4 opens, described second power semiconductor A2 and the 4th Power semiconductor A4 isolates with galvanic circle;Described first high-speed disconnecting switch K1 and the 3rd high-speed disconnecting switch K3 is still It is in closure state;Control first, the three, the 5th power semiconductor conductings, by first, the three, the 5th power semiconductors Device is pressed conducting direction and is accessed circuit, voltage generator A0 action in described main current circuit, electric current by main current circuit to the The branch road transfer of one circuit, the 5th circuit and tertiary circuit composition;
If be detected that the direction of short circuit current is to flow at the second incoming end S2, when flowing out at the first incoming end S1, will Described first high-speed disconnecting switch K1 and the 3rd high-speed disconnecting switch K3 opens, described first and the 3rd power semiconductor with Galvanic circle isolates;Described second high-speed disconnecting switch K2 and the 4th high-speed disconnecting switch K4 remains in closure state, controls Second, the four, the 5th power semiconductors are pressed conducting direction and are accessed by the second, the four, the 5th power semiconductor conductings Circuit, the branch road transfer that electric current is made up of to second circuit, the 5th circuit and the 4th circuit main current circuit.
In the present embodiment, transfer current circuit each branch current mark when Fig. 6 gives breaking current, wherein i is stream Through incoming end S1 or the electric current of incoming end S2, i0 is the electric current flowing through main current circuit, and i1 is the electric current flowing through circuit 1, i2 For flowing through the electric current of circuit 2, i3 is the electric current flowing through circuit 3, and i4 is the electric current flowing through circuit 4, and i5 is the electricity flowing through circuit 5 Stream, i6 is the electric current flowing through energy dissipation circuit.
By electric current as a example by S1 flows to S2, each branch road in transfer current circuit when Fig. 7 (a)-7 (d) gives breaking current The sense of current, concrete for correspondence each branch current direction in each moment from t0 to t5.Fig. 9 gives each branch road during breaking current Curent change curve.
Its concrete operating procedure include the following aspects (by the sense of current from S1 to as a example by S2):
1) system is properly functioning, and electric current all flows through from main current circuit, as shown in Fig. 7 (a), and wherein system nominal current For I.
2) the t0 moment, system is short-circuited fault, and main current circuit electric current begins to ramp up, and between t0 and t1, when exceeding is During system short-circuit threshold value, control system action, A0 action, control conducting power semiconductor device A5 simultaneously, disconnect high-speed isolated and open Close K2 and K4.
3) the t1 moment, the action of A0 makes main current circuit electric current start to reduce, and flows through the electric current of main current circuit to propping up Road 1-5-3 shifts, as shown in Fig. 7 (b).
4) the t2 moment, high speed machine switching current is fully transferred to the first circuit, the 5th circuit and tertiary circuit composition Branch road 1-5-3, as shown in Fig. 7 (c).Now control high speed machine switch to open without arc, form fracture.
5) between t2 to t3, branch road 1-5-3 bears whole short circuit current.Treat that short circuit current rises to threshold value, in the t3 moment, Control to have and the power semiconductor A5 of cut-off current ability can turn off the electric current in branch road 1-5-3.
6), between t3 to t4, during A5 cut-off current, electricity can be produced at circuit 1, circuit 5 and circuit 3 two ends (chopper two ends) Pressure, has reached the conduction threshold of energy dissipation circuit, and energy dissipation circuit turns on.As shown in Fig. 7 (d), electric current starts to energy Dissipating circuit shifts.Due to the voltage clamp effect of energy dissipation circuit, chopper both end voltage ascensional range is the least.
7) the t4 moment, the electric current in branch road 1-5-3 is fully transferred to energy dissipation circuit, as shown in Fig. 7 (e), now breaks The voltage at device two ends, road reaches peak, for chopper two ends overvoltage peak value in interrupting process.Hereafter, in energy dissipation circuit Electric current will begin to decline, the voltage at chopper two ends also begins to slowly decline, when system power is less than energy dissipation circuit During minimum conducting electric current 1mA, energy dissipation circuit is closed, and energy dissipation circuit both end voltage declines rapidly.
8) the t5 moment, the electric current in energy dissipation circuit is 0, and chopper has cut-off, and system controls transfer current circuit In, the high-speed disconnecting switch K2 in circuit 2 and circuit 4 and high-speed disconnecting switch K4 Guan Bi, now all in transfer current circuit High-speed disconnecting switch all closes, and the voltage at chopper two ends reduces to system voltage.
It is similar to, when the sense of current is to S1 from S2, and interrupting process is as follows:
1) system is properly functioning, and electric current all flows through from main current circuit, wherein system nominal current as shown in Fig. 8 (a) For I.
2) the t0 moment, system is short-circuited fault, and main current circuit electric current begins to ramp up, and between t0 and t1, when exceeding is During system short-circuit threshold value, control system action, A0 action, control conducting power semiconductor device A5 simultaneously, disconnect high-speed isolated and open Close K1 and K3, protect described power semiconductor A1 and A3 not by over-voltage breakdown, electric current transfer branch road 4-5-2 conducting.
3) the t1 moment, owing to the action of A0 makes main current circuit electric current start to reduce, the electric current of main current circuit is flowed through Shift to branch road 4-5-2, as shown in Fig. 8 (b).
4) the t2 moment, high speed machine switching current is fully transferred to the 4th circuit, the 5th circuit and second circuit composition Branch road 4-5-2, as shown in Fig. 8 (c).Now control high speed machine switch to open without arc, form fracture.
5) between t2 to t3, branch road 4-5-2 bears whole short circuit current.Treat that short circuit current rises to threshold value, in the t3 moment, Control to have and the power semiconductor A5 of cut-off current ability can turn off the electric current in branch road 4-5-2.
6), between t3 to t4, during A5 cut-off current, electricity can be produced at circuit 4, circuit 5 and circuit 2 two ends (chopper two ends) Pressure, has reached the conduction threshold of energy dissipation circuit, and energy dissipation circuit turns on.As shown in Fig. 8 (d), electric current starts to energy Dissipating circuit shifts.Due to the voltage clamp effect of energy dissipation circuit, chopper both end voltage ascensional range is the least.
7) the t4 moment, the electric current in branch road 4-5-2 is fully transferred to energy dissipation circuit, as shown in Fig. 8 (e), now breaks The voltage at device two ends, road reaches peak, for chopper two ends overvoltage peak value in interrupting process.Hereafter, in energy dissipation circuit Electric current will begin to decline, the voltage at chopper two ends also begins to slowly decline, when system power is less than energy dissipation circuit During minimum conducting electric current 1mA, energy dissipation circuit is closed, and energy dissipation circuit both end voltage declines rapidly.
8) the t5 moment, the electric current in energy dissipation circuit is 0, and chopper has cut-off, and system controls transfer current circuit In, high-speed disconnecting switch K1 and the K3 Guan Bi in circuit 1 and circuit 3, now in transfer current circuit, all disconnecting switch are all closed Closing, the voltage at chopper two ends reduces to system voltage.
In one embodiment, described high speed machine switch FCB or first, second, third, fourth, the 5th high-speed isolated Switch K1-K5 include high speed machine based on electromagnetic repulsion force switch, based on high-speed electric expreess locomotive drive mechanical switch or based on blast The high speed machine switch driven.
In one embodiment, described first, second, third, fourth power semiconductor A1-A4 includes electric power two pole One or more combinations in pipe, IGCT;
Described 5th power semiconductor A5 is the power semiconductor with full control function, including IGBT, IGCT, Any one in GTO or any number of combination;
Described voltage generator A0 is for including turn-off power semiconductor device or a combination thereof, superconductive current limiter, fuse, quick-fried Fried current limiter etc. has device or the device of bi-directional voltage capacity-building.
In the present embodiment, described power semiconductor A1 to A4 is the power electronics device with one-way conduction ability Part, including, but not limited to any one in Power Diode Pumped, IGCT or any number of combinations.
Described device A0 be two-way admittance and have Voltage Establishment ability can turn-off power semiconductor device or a combination thereof, Or there is device or the device of bi-directional voltage capacity-building for superconductive current limiter, fuse, blast current limiter etc..Can switch-off power Semiconductor device is including, but not limited to any one in IGBT, IGCT, GTO or any number of combinations.
Described power semiconductor A5 is power semiconductor or a combination thereof with full control function, entirely controls function Power semiconductor including, but not limited to any one in IGBT, IGCT, GTO or any number of combinations.
In one embodiment, described energy dissipation circuit is varistor or the spark gap of zinc oxide valve plate composition.
In the present embodiment, the VA characteristic curve of energy dissipation circuit as shown in Figure 4, described energy dissipation circuit excessively Being in cut-off state under chopper normal operation, leakage current is less than 1 μ A;The described conducting voltage crossing energy dissipation circuit Threshold value is 1.5 times of the system voltage residing for described chopper.
In one embodiment, chopper as shown in Figure 5 puts into procedure structure schematic diagram, and wherein S1, S2 are that system connects Enter end, described system can be any required for use the system of chopper, be not limited to the scope described in the present invention.With electric current From S1 to as a example by S2, illustrate that the hybrid circuit breaker that the present invention comprises puts into process.
Hybrid circuit breaker that the present invention comprises puts into process and is divided into following components:
1) hybrid circuit breaker is connected into system access point end S1 and S2, and during access, high speed machine switch contact is in disconnected Open state, high-speed disconnecting switch K1 to K4 is in closure state.
2) now, all power semiconductors of hybrid circuit breaker are closed, and system voltage is hybrid disconnected Device two ends, road.
3) control power semiconductor A1, A5 and A3 conducting in Fig. 2 (if current direction be S2 to S1, then control A4, A5 and A2 turns on), then the voltage at hybrid circuit breaker two ends is limited by power semiconductor conduction voltage drop, the most hybrid disconnected Electric current in the device of road all flows through from transfer current circuit branch circuit 5.
4) control conducting voltage generator A0, control high speed machine switch simultaneously and close a floodgate, due to high speed machine switch ends Voltage be the conduction voltage drop of semiconductor device in branch road 1-5-3, voltage is relatively low, and making process does not haves electric arc.
5) after having closed a floodgate, owing to the voltage at main current circuit two ends is less than transfer current circuit branch circuit 1-5-3 two The voltage of end, the electric current therefore flow through in A1, A5 and A3 is transferred quickly to main current circuit.When electric current is fully transferred to principal current After circuit, power semiconductor A1, A5 and A3 automatically shut down.
So far, hybrid circuit breaker puts into process and completes, and starts properly functioning.
In one embodiment, a kind of concrete instance graph as shown in Figure 10, in the example shown, main current circuit by High speed machine switch FCB and IGBT combined serial realizes.
In one embodiment, a kind of concrete instance graph as shown in figure 11, in the example shown, main current circuit by High speed machine switch FCB and voltage generator series connection realize, and A5 props up route multiple IGBT module series connection and realizes.
In one embodiment, a kind of instantiation figure as shown in figure 12, in the example shown, energy dissipation circuit is straight Connect and A5 branch circuit parallel connection.
According to the present invention, except A0 be can turn-off power semiconductor device or a combination thereof, or be superconductive current limiter, fuse, Blast current limiter etc. has outside device or the device of bi-directional voltage capacity-building, and remaining all power semiconductor is unidirectional Logical power semiconductor, wherein said A5 is the device of the ability with cut-off current.
The hybrid circuit breaker only with one group of unidirectional full-control type power semiconductor is the invention enables to become two-way mixed Box-like chopper.
The invention discloses the hybrid circuit breaker of a kind of two-way disjunction, including main current circuit, transfer current circuit with And energy dissipation circuit.Transfer current circuit is formed bridge architecture by the power semiconductor with one-way conduction, it is only necessary to make Disjunction bidirectional current just can be completed with one group of unidirectional full-control type power semiconductor.When chopper needs drop-out current, logical Cross and control the power semiconductor of main current circuit and transfer current circuit by certain sequential action, it is possible to achieve high speed machine Tool switch contact is opened without arc, and between contact, dielectric recovery property is good, in conjunction with energy dissipation circuit, can significantly improve cut-off can By property.
Above content is to combine concrete preferred implementation further description made for the present invention, it is impossible to assert The detailed description of the invention of the present invention is only limitted to this, for general technical staff of the technical field of the invention, is not taking off On the premise of present inventive concept, it is also possible to make some simple deduction or replace, all should be considered as belonging to the present invention by institute The claims submitted to determine protection domain.

Claims (10)

1. a bidirectional high-pressure DC hybrid chopper, it is characterised in that: described chopper includes main current circuit, transfer electricity Current circuit, energy dissipation circuit, the first incoming end and the second incoming end;
Described main current circuit is for by the electric current under normal operating conditions;
Described transfer current circuit is for when there is short-circuit current, it is achieved short-circuit current turning from main current circuit Move;
Described energy dissipation circuit is for the energy of the short-circuit current that dissipates;
Described first incoming end and the second incoming end are used for flowing into or out electric current.
Chopper the most according to claim 1, it is characterised in that: preferably, described main current circuit includes high speed machine Switch FCB and voltage generator A0;
Described high speed machine switch FCB is connected with voltage generator A0.
Chopper the most according to claim 2, it is characterised in that: described transfer current circuit include the first circuit, second Circuit, tertiary circuit, the 4th circuit and the 5th circuit;
Described first circuit and the 4th circuit connected in series, second circuit is connected with tertiary circuit, between the first circuit and the 4th circuit End points, second circuit and tertiary circuit between end points at be connected and have the 5th circuit.
Chopper the most according to claim 3, it is characterised in that: described first circuit includes the first power semiconductor A1 and the first high-speed disconnecting switch K1;
Described second circuit includes the second power semiconductor A2 and the second high-speed disconnecting switch K2;
Described tertiary circuit includes the 3rd power semiconductor A3 and the 3rd high-speed disconnecting switch K3:
Described 4th circuit includes the 4th power semiconductor A4 and the 4th high-speed disconnecting switch K4;
Described 5th circuit includes having can the power semiconductor A5 of cut-off current ability.
Chopper the most according to claim 4, it is characterised in that: described voltage generator A0 is two-way admittance, and for having Having the device of Voltage Establishment ability, the first, second, third, fourth, the 5th power semiconductor A1-A5 is one-way conduction merit Rate semiconductor device.
Chopper the most according to claim 5, it is characterised in that: when described chopper in normal operation, electric current Flowing through from described main current circuit, voltage generator A0 is in the conduction state, now transfer current circuit and energy dissipation circuit Electric current is not had to flow through.
Chopper the most according to claim 6, it is characterised in that: when system is short-circuited fault, need disjunction short circuit electricity During stream:
If be detected that the direction of short circuit current is to flow at the first incoming end S1, when flowing out at the second incoming end S2, by described Second high-speed disconnecting switch K2 and the 4th high-speed disconnecting switch K4 opens, described second power semiconductor A2 and the 4th power Semiconductor device A4 isolates with galvanic circle;Described first high-speed disconnecting switch K1 and the 3rd high-speed disconnecting switch K3 remains in Closure state;Control first, the three, the 5th power semiconductor conductings, by first, the three, the 5th power semiconductors Accessing circuit, voltage generator A0 action in described main current circuit by conducting direction, electric current is electric to first by main current circuit The branch road transfer of road, the 5th circuit and tertiary circuit composition;
If be detected that the direction of short circuit current is to flow at the second incoming end S2, when flowing out at the first incoming end S1, by described First high-speed disconnecting switch K1 and the 3rd high-speed disconnecting switch K3 opens, described first and the 3rd power semiconductor and conduction Loop isolates;Described second high-speed disconnecting switch K2 and the 4th high-speed disconnecting switch K4 remains in closure state, control second, Second, the four, the 5th power semiconductors are pressed conducting direction and are accessed circuit by the four, the 5th power semiconductor conductings, The branch road transfer that electric current is made up of to second circuit, the 5th circuit and the 4th circuit main current circuit.
Chopper the most according to claim 4, it is characterised in that: described high speed machine switch FCB or first, second, the Three, the four, the 5th high-speed disconnecting switch K1-K5 include high speed machine based on electromagnetic repulsion force switch, drive based on high-speed electric expreess locomotive Mechanical switch or high speed machine based on explosion driving switch.
Chopper the most according to claim 5, it is characterised in that: described first, second, third, fourth power semiconductor Device A1-A4 includes the one or more combinations in Power Diode Pumped, IGCT;
Described 5th power semiconductor A5 is the power semiconductor with full control function, including IGBT, IGCT, GTO In any one or any number of combination;
Described voltage generator A0 is for including turn-off power semiconductor device or a combination thereof, superconductive current limiter, fuse, blast limit Stream device etc. has device or the device of bi-directional voltage capacity-building.
Chopper the most according to claim 1, it is characterised in that: described energy dissipation circuit includes varistor or oxygen Change the spark gap of zinc valve block composition.
CN201610599245.XA 2016-07-27 2016-07-27 A kind of bidirectional high-pressure DC hybrid chopper CN106207991A (en)

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CN106356817A (en) * 2016-09-27 2017-01-25 西安交通大学 Bridge type bidirectional non-arc direct-current circuit breaker
CN106849327A (en) * 2017-01-19 2017-06-13 上海电气集团股份有限公司 The breaker and control method of a kind of alternating current-direct current hybrid
CN108666983A (en) * 2017-03-31 2018-10-16 清华大学 Breaker, open-circuit system, electric system and operating method
CN109033597A (en) * 2018-07-17 2018-12-18 西安交通大学 One kind is with CO2Gas is the calculation method of parameters of the disconnecting switch of dielectric
CN109617007A (en) * 2018-12-28 2019-04-12 西安交通大学 A kind of hybrid dc circuit breaker of superconducting current-limiting and the course of work
CN111817266A (en) * 2020-06-04 2020-10-23 西安交通大学 Current-limiting hybrid direct-current circuit breaker

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CN103346531A (en) * 2013-02-06 2013-10-09 西安交通大学 Bidirectional breaking-based mixing type circuit breaker
CN103280763A (en) * 2013-02-27 2013-09-04 国网智能电网研究院 Direct current circuit breaker and realization method thereof
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106356817A (en) * 2016-09-27 2017-01-25 西安交通大学 Bridge type bidirectional non-arc direct-current circuit breaker
CN106849327A (en) * 2017-01-19 2017-06-13 上海电气集团股份有限公司 The breaker and control method of a kind of alternating current-direct current hybrid
CN106849327B (en) * 2017-01-19 2020-03-17 上海电气集团股份有限公司 Alternating current-direct current hybrid circuit breaker and control method
CN108666983A (en) * 2017-03-31 2018-10-16 清华大学 Breaker, open-circuit system, electric system and operating method
CN108666983B (en) * 2017-03-31 2020-10-30 清华大学 Circuit breaker, circuit breaking system, power system and operation method
CN109033597A (en) * 2018-07-17 2018-12-18 西安交通大学 One kind is with CO2Gas is the calculation method of parameters of the disconnecting switch of dielectric
CN109617007A (en) * 2018-12-28 2019-04-12 西安交通大学 A kind of hybrid dc circuit breaker of superconducting current-limiting and the course of work
CN111817266A (en) * 2020-06-04 2020-10-23 西安交通大学 Current-limiting hybrid direct-current circuit breaker

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