CN106159880A - DC solid circuit breaker and distribution system - Google Patents
DC solid circuit breaker and distribution system Download PDFInfo
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- CN106159880A CN106159880A CN201510140420.4A CN201510140420A CN106159880A CN 106159880 A CN106159880 A CN 106159880A CN 201510140420 A CN201510140420 A CN 201510140420A CN 106159880 A CN106159880 A CN 106159880A
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- Prior art keywords
- storage capacitor
- circuit breaker
- master switch
- solid circuit
- igct
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Classifications
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- 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
- H02H3/087—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 for dc applications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/72—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region
- H03K17/73—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region for dc voltages or currents
Abstract
The disclosure provides a kind of DC solid circuit breaker and distribution system.This DC solid circuit breaker includes a short-circuit protection unit, a charging switching element and master switch unit.Described protected location includes one first storage capacitor, one first current-limiting inductance, one first power diode, the second storage capacitor, one second current-limiting inductance and one second power diode.Described charging switching element includes one first charging paths and one second charging paths.Described master switch unit includes at least one master switch IGCT.Storage capacitor used in the DC solid circuit breaker of the disclosure and resonant parameter have only to design with reference to the requirement of overcurrent protection, therefore, not only can be substantially reduced volume and the cost of DC solid circuit breaker, also improve the reliability of DC solid circuit breaker.
Description
Technical field
It relates to electrical equipment technical field, be specifically related to a kind of DC solid circuit breaker and
And include the distribution system of this DC solid circuit breaker.
Background technology
Power system and technology of transmission of electricity are had higher requirement by society, improve the most further
The stability of electrical network, provide a user with high-quality electric energy and become the developing direction of power industry.Open circuit
Device is as in transmission line of electricity important link, and its performance directly affects the normal fortune of electrical network
OK.Such as, DC solid circuit breaker is a kind of based on semiconductor switch, is used for fault from direct current
The Electric Power Automation Equipment of quickly excision in transmission of electricity, distribution system or DC power supply apparatus.It has
Flexibly control, quick acting, without electric arc, life-span length and high reliability.
The semiconductor switch at DC solid circuit breaker is applied to be mainly IGCT at present.Such as, exist
In the Chinese invention patent application of Publication No. CN102222874A, it is provided that a kind of such as Fig. 1 institute
The DC solid circuit breaker shown.The normally open key of this DC solid circuit breaker is mainly by
There is resonance and resonance in one storage capacitor C1 and the first storage capacitor C2 and the first resonant inductance Lr1
Electric current is more than load current.The key that this DC solid circuit breaker fault disconnects is mainly by first
There is resonance and resonance electricity in storage capacitor C1 and the first storage capacitor C2 and the second resonant inductance Lr2
Stream is more than fault current.
But, in the case of the fault that is short-circuited, fault current would generally be very big and be difficult to estimate
Meter, thus makes to need the first storage capacitor C1 of very bulky capacitor value and the first storage capacitor C2
The energy providing abundant could excise short trouble.This not only adds DC solid circuit breaker
Volume and cost, simultaneously also the reliability of DC solid circuit breaker is brought risk.Additionally,
This DC solid circuit breaker does not has a function that zero current starts, and similar situation existing its
In his DC solid circuit breaker the most common.
Summary of the invention
The purpose of the disclosure is to provide a kind of relatively reliable DC solid circuit breaker and a kind of bag
Include the distribution system of this DC solid circuit breaker, thus overcome the most to a certain extent due to relevant
Restriction and the defect of technology and one or more problems of causing.
Other characteristics of the disclosure and advantage will be apparent from by detailed description below, or part
Ground acquistion by the practice of the disclosure.
First aspect according to the disclosure, it is provided that a kind of DC solid circuit breaker, including:
One short-circuit protection unit, including:
One first storage capacitor；
One first current-limiting inductance, its first end couples with described first storage capacitor the first end,
Its second end and a load regulation one end couple；
One first power diode, its negative electrode couples with described first current-limiting inductance the second end；
One second storage capacitor, its first end is connected with described first power diode anode；
One second current-limiting inductance, its first end couples with described second storage capacitor the second end,
Its second end couples with described load the second end；And
One second power diode, its anode couples with described second current-limiting inductance the second end,
Its negative electrode couples with described first storage capacitor the second end；
One charging switching element, including:
One first charging paths, its two ends couple with described first power diode the two poles of the earth respectively；
One second charging paths, its two ends couple with described second power diode the two poles of the earth respectively；
One master switch unit, including:
At least one master switch IGCT, described master switch IGCT the first pole and a DC source
Couple；When described load-side generation Fisrt fault, described first storage capacitor and the second storage
Energy electric capacity applies a backward voltage to described master switch IGCT the second pole and compels to turn it off.
In a kind of exemplary embodiment of the disclosure, also include:
One auxiliary switching element, in parallel with described master switch IGCT, for sending out in described load-side
Raw second fault or have normal when disconnecting request, provides electric current nature mistake for described master switch IGCT
Zero point.
In a kind of exemplary embodiment of the disclosure, described Fisrt fault is short trouble；Described
Second fault was stream, overvoltage, under-voltage or leak current fault.
In a kind of exemplary embodiment of the disclosure, described master switch unit includes:
One first master switch IGCT, its anode couples with described DC power anode, its negative electrode with
Described first storage capacitor the first end couples.
In a kind of exemplary embodiment of the disclosure, described auxiliary switching element includes:
Described first storage capacitor；
One first auxiliary switch IGCT, its anode couples with described DC power anode；And
One first resonant inductance, its first end is connected with described first auxiliary switch IGCT negative electrode,
Its second end couples with described first storage capacitor the second end.
In a kind of exemplary embodiment of the disclosure, described master switch unit includes:
One second master switch IGCT, its negative electrode couples with described DC power cathode, its anode with
Described second storage capacitor the second end couples.
In a kind of exemplary embodiment of the disclosure, described auxiliary switching element includes:
Described second storage capacitor；
One second auxiliary switch IGCT, its negative electrode couples with described DC power cathode；And
One second resonant inductance, its first end is connected with described second auxiliary switch IGCT anode,
Its second end couples with described second storage capacitor the first end.
In a kind of exemplary embodiment of the disclosure, described first charging paths and the second charging
Road includes switching device and/or power resistor.
In a kind of exemplary embodiment of the disclosure, described IGCT is unidirectional thyristor.
Second aspect according to the disclosure, it is provided that a kind of distribution system, any one is straight including above-mentioned
Stream solid circuit breaker.
Energy storage electricity used in DC solid circuit breaker provided in disclosure exemplary embodiment
Hold and resonant parameter has only to design with reference to overcurrent protection requirement, therefore, not only can significantly drop
The volume of low DC solid circuit breaker and cost, also improve the reliability of DC solid circuit breaker.
Accompanying drawing explanation
Its exemplary embodiment is described in detail, above and other feature of the disclosure by referring to accompanying drawing
And advantage will be apparent from.
Fig. 1 is the structural representation of a kind of DC solid circuit breaker in prior art.
Fig. 2 is the structural representation of a kind of DC solid circuit breaker in disclosure exemplary embodiment.
Fig. 3 A is the structural representation of another DC solid circuit breaker in disclosure exemplary embodiment
Figure.
Fig. 3 B is the structural representation of another DC solid circuit breaker in disclosure exemplary embodiment
Figure.
Fig. 4 is a kind of signal waveform schematic diagram of DC solid circuit breaker in Fig. 2.
Fig. 5 A be in Fig. 2 DC solid circuit breaker at t0-t1Equivalent circuit diagram between moment.
Fig. 5 B be in Fig. 2 DC solid circuit breaker at t1-t2Equivalent circuit diagram between moment.
Fig. 6 be in Fig. 2 DC solid circuit breaker at t2-t3Equivalent circuit diagram between moment.
Fig. 7 is another signal waveform schematic diagram of DC solid circuit breaker in Fig. 2.
Fig. 8 A be in Fig. 2 DC solid circuit breaker at t '2-t′3Equivalent circuit diagram between moment.
Fig. 8 B be in Fig. 2 DC solid circuit breaker at t '3-t′4Equivalent circuit diagram between moment.
Fig. 8 C be in Fig. 2 DC solid circuit breaker at t '5Equivalent circuit diagram after moment.
Description of reference numerals:
A master switch unit
B auxiliary switching element
C short-circuit protection unit
D charging switching element
C1 the first storage capacitor
C2 the second storage capacitor
D1 the first power diode
D2 the second power diode
DC DC source
L1 the first current-limiting inductance
L2 the second current-limiting inductance
Lr1 the first resonant inductance
Lr2 the second resonant inductance
RL loads
S1 the first charging paths
S2 the second charging paths
T1 the first master switch IGCT
T2 the first auxiliary switch IGCT
T3 the second master switch IGCT
T4 the second auxiliary switch IGCT
Detailed description of the invention
It is described more fully with exemplary embodiment referring now to accompanying drawing.But, exemplary embodiment
Can implement in a variety of forms, and be not understood as limited to embodiment set forth herein；On the contrary,
These embodiments are provided so that the disclosure will fully and completely, and by the design of exemplary embodiment
Convey to those skilled in the art all sidedly.In the drawings, in order to clearly, part may be exaggerated
The size of element or deformed.The most identical reference represents same or similar structure,
Thus their detailed description will be omitted.
Additionally, described feature, structure or characteristic can be combined in one in any suitable manner
In individual or more embodiment.In the following description, it is provided that many details thus be given this
Fully understanding of disclosed embodiment.It will be appreciated, however, by one skilled in the art that can put into practice
The technical scheme of the disclosure and do not have in described specific detail one or more, or can use
Other method, element etc..In other cases, it is not shown in detail or describes known features, side
Method or operation are to avoid each side of the fuzzy disclosure.
This exemplary embodiment provide firstly a kind of DC solid circuit breaker.This DC solid breaks
Road device mainly includes a master switch unit, a short-circuit protection unit and a charging switching element；?
In other exemplary embodiments of the disclosure, it is also possible to include an auxiliary switching element.Wherein master opens
Close unit to be mainly used in when normal operation circuit providing passage for load current；Short-circuit protection unit
It is mainly used in Fisrt fault, such as, provides backward voltage for master switch unit during short trouble
It is forced the most naturally to turn off；Charging switching element is mainly used in when normal operation circuit as short circuit
Storage capacitor in protected location provides charge circuit；Auxiliary switching element is mainly used in the
Two faults, such as, cross when stream, overvoltage, under-voltage or electric leakage etc. can measure fault as cut-out master switch list
Unit provides enough energy.
As shown in Figure 2, for a kind of illustrative embodiments of above-mentioned DC solid circuit breaker.Its
Master switch unit A mainly includes one first master switch IGCT T1.B is main for its auxiliary switching element
Including described first storage capacitor C1, one first auxiliary switch IGCT T2 and one first resonance
Inductance Lr1.Its short-circuit protection unit C mainly includes one first storage capacitor C1, one first current limliting
Inductance L1, one first power diode D1, one second storage capacitor C2, one second current-limiting inductance
L2 and one second power diode D2.Its charging switching element D mainly includes that one first charges
Branch road S1 and one second charging paths S2.
First end of the first current-limiting inductance L1 couples with described first storage capacitor C1 the first end, the
Second end of one current-limiting inductance L1 and load RL first end couple.First power diode D1
Negative electrode couple with described first current-limiting inductance L1 the second end.First end of the second storage capacitor C2
It is connected with described first power diode D1 anode.First end of the second current-limiting inductance L2 is with described
Second storage capacitor C2 the second end couples, the second end of the second current-limiting inductance L2 and described load RL
Second end couples.The anode of the second power diode D2 and described second current-limiting inductance L2 the second end
Coupling, the negative electrode of the second power diode D2 couples with described first storage capacitor C1 the second end.
First power diode D1 and the second power diode D2 is mainly used in when being short-circuited fault
Discharge channel is provided for the first storage capacitor C1 and the second storage capacitor C2.Described first charging
The two ends of road S1 couple with described first power diode D1 the two poles of the earth respectively.Described second charging
The two ends of road S2 couple with described second power diode D2 the two poles of the earth respectively.First master switch crystalline substance lock
The anode of pipe T1 couples with described DC source DC positive pole, the moon of the first master switch IGCT T1
Pole couples with described first storage capacitor C1 the first end.Described first auxiliary switch IGCT T2's
Anode couples with described DC source DC positive pole.First end of the first resonant inductance Lr1 is with described
First auxiliary switch IGCT T2 negative electrode connects, second end of the first resonant inductance Lr1 and described the
One storage capacitor C1 the second end couples.
As shown in fig. 3, in other exemplary embodiments of the disclosure, described master switch unit
A can also include one second master switch IGCT T3.The negative electrode institute of the second master switch IGCT T3
State DC source DC negative pole to couple, the anode of the second master switch IGCT T3 and described second energy storage
Electric capacity C2 the second end couples；Or, as shown in Figure 3 B, described master switch unit A can also
Include above-mentioned first master switch IGCT T1 and the second master switch IGCT T3 simultaneously.Described auxiliary
Switch element B can also include described second storage capacitor C2, one second auxiliary switch IGCT
T4 and one second resonant inductance Lr2.The negative electrode of the second auxiliary switch IGCT T4 and described direct current
Power supply DC negative pole couples.First end of the second resonant inductance Lr2 is brilliant with described second auxiliary switch
Brake tube T4 anode connects, second end of the second resonant inductance Lr2 and described second storage capacitor C2
First end couples；Or, as shown in Figure 3, described auxiliary switching element B can also wrap simultaneously
Include above-mentioned first storage capacitor C1, the first auxiliary switch IGCT T2, the first resonant inductance Lr1,
Second storage capacitor C2, the second auxiliary switch IGCT T4 and the second resonant inductance Lr2.
It will be seen that in the present example embodiment, the first storage capacitor C1 be simultaneously contained in auxiliary
Help in switch element B and short-circuit protection unit C.Second storage capacitor C2 is also simultaneously contained in
In auxiliary switching element B and short-circuit protection unit C.First charging paths S1 and the second charging
Road S2 can have identical structure, can be by switching devices such as machinery or semiconductor switch
It is separately formed, it is also possible to be separately formed by power resistor, or, it is also possible to by machinery or quasiconductor
The switching devices such as switch and power resistor tandem compound are constituted.DC solid shown in figure 3 breaks
In the device of road, the first master switch IGCT T1 and the second master switch IGCT T3 will in the same way
Run, i.e. simultaneously turn on and simultaneously turn off, the first auxiliary switch IGCT T2 and the second auxiliary switch
IGCT T4 also will run in the same way, i.e. simultaneously turn on and simultaneously turn off.Additionally, at this
First master switch IGCT T1 described in exemplary embodiment, the first auxiliary switch IGCT T2,
Two master switch IGCT T3 and the second auxiliary switch IGCT T4 are both preferably unidirectional thyristor.
In above-mentioned DC solid circuit breaker, when described load RL side occurs Fisrt fault, the shortest
During the fault of road, the first storage capacitor C1 in described short-circuit protection unit C and the second storage capacitor
It is anti-that C2 can apply one to the pole coupled that described master switch IGCT is connected with short-circuit protection unit C
It is forced naturally to turn off to voltage.There is the second fault in described load RL side, such as, cross stream, mistake
Pressure, under-voltage or electric leakage etc. can measure fault, or have normal when disconnecting request, auxiliary switching element B
Electric current natural zero-crossing point is provided so that it is naturally turn off for described master switch IGCT.
The short trouble function of the DC solid circuit breaker in this exemplary embodiment is mainly by storage
Backward voltage can be applied to master switch IGCT and compels and make it naturally turn off and realize by electric capacity, so
Little with the magnitude relationship of storage capacitor in theory.And the excision of other fault and normal disconnection are profits
Constituting the LC resonance circuit in parallel with master switch IGCT with storage capacitor with resonant inductance is main opening
Close IGCT to provide electric current natural zero-crossing point to force it naturally to turn off to realize, thus theoretical
Upper relevant to the size of storage capacitor and resonant parameter.For DC solid open circuit of the prior art
For device, the excision of its short trouble provides electric current natural also with above-mentioned LC auxiliary resonance circuit
Zero crossing realizes, say, that the size of resonant parameter and storage capacitor have to meet short circuit
The requirement of failure removal.But, short circuit current is generally even big than overcurrent than rated current to be obtained
Many, so in the DC solid circuit breaker of prior art, needing just may be used with the biggest storage capacitor
To provide abundant energy to excise short trouble.And storage capacitor used in the disclosure and
Resonant parameter has only to design with reference to overcurrent protection requirement, and this not only greatly reduces DC solid
The volume of chopper and cost, also improve the reliability of DC solid circuit breaker.
Further, this exemplary embodiment additionally provides a kind of distribution system, this distribution system
Including any one DC solid circuit breaker above-mentioned.In a power distribution system, though DC solid circuit breaker
Little, but it is critically important parts.By the DC solid circuit breaker in this exemplary embodiment, can
To increase the reliability of distribution system to a great extent.
Hereinafter, as a example by the DC solid circuit breaker in Fig. 2, in this exemplary embodiment
The operation principle of DC solid circuit breaker carries out further description.
With reference to the signal waveforms in Fig. 4, t0Moment is to t1Moment is the startup of DC solid circuit breaker
Process.When DC solid circuit breaker starts, i.e. t0Moment, the first master switch IGCT T1,
One charging paths S1 and the second charging paths S2 are triggered conducting simultaneously.Due to the first current limliting electricity
Sense L1 and the second current-limiting inductance L2 are connected in major loop, input current IDCWith load current ILoad
Start from scratch and gradually rise.First storage capacitor C1 passes through the second charging paths S2 and the second current limliting
Inductance L2 is charged by DC source DC, and the second storage capacitor C2 passes through the first charging paths S1
Being charged by DC source DC with the first current-limiting inductance L1, therefore their voltage gradually rises.This
The equivalent circuit of one process is as shown in Figure 5 A.It follows that the direct current in this exemplary embodiment
Solid circuit breaker has zero current and starts function, and it is mainly by first be connected in major loop
Master switch IGCT T1 and the first current-limiting inductance L1 and the second current-limiting inductance L2 realize, and are not subject to
Other auxiliary circuits (include the first auxiliary switch IGCT T2, the first resonant inductance Lr1, first
Storage capacitor C1, the second storage capacitor C2, the first power diode D1, the second power diode
D2, the first charging paths S1 and the second charging paths S2) impact.
As the first storage capacitor C1 voltage VC1With the second storage capacitor C2 voltage VC2Increase to
DC source D/C voltage VDCTime identical, charging process terminates.Load voltage VRLIt is also added to straight
Stream mains DC voltage VDCCircuit is made to enter steady statue, hereafter, i.e. t1After moment, directly
Stream power supply DC is by the first master switch IGCT T1, the first current-limiting inductance L1 and the second current limliting
Inductance L2 provides electric current for load RL, as shown in Figure 5 B.It follows that properly functioning time
Load current ILoadFlow only through the first master switch IGCT T1 and the first current-limiting inductance L1 and second
Current-limiting inductance L2, and other auxiliary circuits (include the first auxiliary switch IGCT T2, the first resonance
Inductance Lr1, the first storage capacitor C1, the second storage capacitor C2, the first power diode D1,
Second power diode D2, the first charging paths S1 and the second charging paths S2) it is in not work
Make state.
T in the diagram2In the moment, load RL side there occurs Fisrt fault F1, such as short trouble,
I.e. load RL impedance abrupt transients is zero.The most therefore load RL voltage sport zero, the first power
Diode D1 and the second power diode D2 turns on because of forward bias.First storage capacitor C1
Direct by the first power diode D1 and the second power diode D2 with the second storage capacitor C2
Series connection, applies a backward voltage to the first master switch IGCT T1 so that the first master switch IGCT
T1 turns off naturally owing to bearing backward voltage.
Hereafter, equivalent circuit as shown in Figure 6, the first storage capacitor C1 and the first current-limiting inductance L1
A LC loop, the second storage capacitor C2 and second limit is formed through the first power diode D1
Stream inductance L2 forms another identical LC loop through the second power diode D2.First storage
Energy electric capacity C1 is electric to the second current limliting to the first current-limiting inductance L1 electric discharge and the second storage capacitor C2
Sense L2 electric discharge makes short circuit current IF1Gradually rise.
To t3During the moment, the voltage of the first storage capacitor C1 and the second storage capacitor C2 is put to zero
And short circuit current IF1Reaching maximum, hereafter the first current-limiting inductance L1 is to the first storage capacitor C1
Reverse charging and the second current-limiting inductance L2 make the first storage to the second storage capacitor C2 reverse charging
The voltage of energy electric capacity C1 and the second storage capacitor C2 is negative value and gradually rises, and meanwhile,
Short circuit current IF1It is gradually reduced.
To t4During the moment, short circuit current IF1Be decreased to zero and all energy be stored within the first energy storage
In electric capacity C1 and the second storage capacitor C2, circuit quits work.
With reference to the signal waveforms in Fig. 5, t0Moment is to t1Moment is the startup of DC solid circuit breaker
Process, this process is similar with Fig. 4, the most no longer describes in detail.At t '2In the moment, load RL side
There is the second fault F2, such as, cross stream, overvoltage, under-voltage or electric leakage etc. and can measure fault, or,
When having normal disconnection request, the first auxiliary switch IGCT T2 is triggered and turns on immediately.First energy storage
Electric capacity C1 and the first resonant inductance Lr1 is brilliant through the first master switch IGCT T1 and the second master switch
There is LC resonance in brake tube T2.Equivalent circuit now as shown in Figure 8 A, along with resonance current IT2
Increase, flow through the electric current I of the first master switch IGCT T1T1It is gradually reduced.
At t '3Moment resonance current IT2Increase to and fault current IF2Identical, the first master switch IGCT
T1 turns off naturally because electric current is reduced to zero.Hereafter the first resonant inductance Lr1 and the first storage capacitor
C1 is connected in main circuit completely, and equivalent circuit is as shown in Figure 8 B.Due to the first storage capacitor C1
Voltage at t '3Moment drops to zero the most completely, and loop current will be gradually increased.
Arrive t '4In the moment, the voltage of the first storage capacitor C1 drops to zero, and loop current increases to
Big value.Hereafter the first storage capacitor C1 be reversed charging and loop current along with the rising of capacitance voltage
And be gradually reduced.Last at t '5Moment is reduced to zero because of loop current so that the first auxiliary switch is brilliant
Brake tube T2 turns off naturally.Whole fault end F2 opens because of the first master switch IGCT T1 and first auxiliary
Close IGCT T2 to be both off and be fully disconnected with DC source DC side, now equivalent circuit such as Fig. 8 C
Shown in.
It follows that the DC solid circuit breaker in this exemplary embodiment also has zero-current switching
Function, it is (auxiliary by first mainly by the resonant branch in parallel for master switch IGCT T1 with first
Switched Thyristors T2, the first resonant inductance Lr1 and the first energy storage electricity capacitances in series is helped to constitute) it is main
Switched Thyristors provides electric current natural zero-crossing point to realize.And, this DC solid circuit breaker has
By the second fault, such as, cross stream, overvoltage, under-voltage and electric leakage etc. and can measure what fault was quickly excised
Function, its equally mainly by the resonant branch in parallel for master switch IGCT T1 with first (by
One auxiliary switch IGCT T2, the first resonant inductance Lr1 and the first energy storage electricity capacitances in series are constituted)
Electric current natural zero-crossing point is provided to realize for the first master switch IGCT T1.
In sum, the DC solid circuit breaker provided in this exemplary embodiment can effectively solve
At Fisrt fault, such as lead because storage capacitor provides energy not enough in the case of short trouble occurs
Cause the problem that master switch unit cannot effectively turn off.It can be by Fisrt fault, such as short trouble
Excise from direct current transportation, distribution system or DC source DC side immediately, it is also possible to by the second fault,
Such as cross stream, overvoltage, under-voltage and electric leakage etc. to measure fault and quickly excise, it is also possible to realize straight
Normal turn-off and the zero current of stream solid circuit breaker start function.And, used in the disclosure
Storage capacitor and resonant parameter have only to require to design with reference to overcurrent protection, be not only substantially reduced
The volume of DC solid circuit breaker and cost, also improve the reliability of DC solid circuit breaker.
The disclosure is been described by by above-mentioned related embodiment, but above-described embodiment only implements this
Disclosed example.It must be noted that, the embodiment disclosed is not limiting as the scope of the present disclosure.
On the contrary, the variation made in without departing from the spirit and scope of the disclosure and retouching, all belong to the disclosure
Scope of patent protection.
Claims (10)
1. a DC solid circuit breaker, it is characterised in that including:
One short-circuit protection unit, including:
One first storage capacitor；
One first current-limiting inductance, its first end couples with described first storage capacitor the first end, its
Second end and a load regulation one end couple；
One first power diode, its negative electrode couples with described first current-limiting inductance the second end；
One second storage capacitor, its first end is connected with described first power diode anode；
One second current-limiting inductance, its first end couples with described second storage capacitor the second end, its
Second end couples with described load the second end；
One second power diode, its anode couples with described second current-limiting inductance the second end, its
Negative electrode couples with described first storage capacitor the second end；
One charging switching element, including:
One first charging paths, its two ends couple with described first power diode the two poles of the earth respectively；
One second charging paths, its two ends couple with described second power diode the two poles of the earth respectively；
One master switch unit, including:
At least one master switch IGCT, described master switch IGCT the first pole and a DC source coupling
Connect；When described load-side generation Fisrt fault, described first storage capacitor and the second energy storage electricity
Appearance applies a backward voltage to described master switch IGCT the second pole and compels to turn it off.
DC solid circuit breaker the most according to claim 1, it is characterised in that also include:
One auxiliary switching element, in parallel with described master switch IGCT, for occurring in described load-side
Second fault or have normal when disconnecting request, provides electric current natural zero-crossing for described master switch IGCT
Point.
DC solid circuit breaker the most according to claim 2, it is characterised in that described first event
Barrier is short trouble；Described second fault was stream, overvoltage, under-voltage or leak current fault.
DC solid circuit breaker the most according to claim 2, it is characterised in that described master switch
Unit includes:
One first master switch IGCT, its anode couples with described DC power anode, its negative electrode and institute
State first storage capacitor the first end to couple.
DC solid circuit breaker the most according to claim 4, it is characterised in that described auxiliary is opened
Pass unit includes:
Described first storage capacitor；
One first auxiliary switch IGCT, its anode couples with described DC power anode；And
One first resonant inductance, its first end is connected with described first auxiliary switch IGCT negative electrode, its
Second end couples with described first storage capacitor the second end.
6. according to the DC solid circuit breaker described in claim 2-5 any one, it is characterised in that
Described master switch unit includes:
One second master switch IGCT, its negative electrode couples with described DC power cathode, its anode and institute
State second storage capacitor the second end to couple.
DC solid circuit breaker the most according to claim 6, it is characterised in that described auxiliary is opened
Pass unit includes:
Described second storage capacitor；
One second auxiliary switch IGCT, its negative electrode couples with described DC power cathode；And
One second resonant inductance, its first end is connected with described second auxiliary switch IGCT anode, its
Second end couples with described second storage capacitor the first end.
DC solid circuit breaker the most according to claim 1, it is characterised in that described first fills
Electricity branch road and the second charging paths include switching device and/or power resistor.
DC solid circuit breaker the most according to claim 7, it is characterised in that described IGCT
It is unidirectional thyristor.
10. a distribution system, it is characterised in that include according to claim 1-9 any one institute
The DC solid circuit breaker stated.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510140420.4A CN106159880B (en) | 2015-03-27 | 2015-03-27 | DC solid circuit breaker and distribution system |
| PCT/CN2016/077567 WO2016155598A1 (en) | 2015-03-27 | 2016-03-28 | Dc solid breaker and power distribution system |
| CN201680018811.1A CN107534438A (en) | 2015-03-27 | 2016-03-28 | DC solid circuit breaker and distribution system |
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| CN201510140420.4A CN106159880B (en) | 2015-03-27 | 2015-03-27 | DC solid circuit breaker and distribution system |
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| CN106159880A true CN106159880A (en) | 2016-11-23 |
| CN106159880B CN106159880B (en) | 2019-07-12 |
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| CN201510140420.4A Expired - Fee Related CN106159880B (en) | 2015-03-27 | 2015-03-27 | DC solid circuit breaker and distribution system |
| CN201680018811.1A Pending CN107534438A (en) | 2015-03-27 | 2016-03-28 | DC solid circuit breaker and distribution system |
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| WO (1) | WO2016155598A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107370119A (en) * | 2017-06-23 | 2017-11-21 | 上海交通大学 | Solid-state direct-current breaker and its control method based on capacitance energy storage |
| CN107516876A (en) * | 2017-08-07 | 2017-12-26 | 上海科梁信息工程股份有限公司 | A kind of direct current interruption device applied to flexible DC power transmission |
| CN107592101A (en) * | 2017-09-07 | 2018-01-16 | 电子科技大学 | A kind of DC solid circuit breaker based on negative electrode short circuit grid-controlled transistor |
| CN110071476A (en) * | 2019-04-15 | 2019-07-30 | 杭州拓深科技有限公司 | A kind of quick electrical circuit fault detection and route cut-off equipment and control method |
| CN110752581A (en) * | 2019-11-28 | 2020-02-04 | 深圳大学 | Direct current solid-state circuit breaker |
| CN112448466A (en) * | 2019-09-04 | 2021-03-05 | 台达电子工业股份有限公司 | DC non-power-off power supply device with bidirectional protection function |
| WO2023011739A1 (en) | 2021-08-06 | 2023-02-09 | Experience Knowledge Strategy, S.L. | A dc solid state circuit breaker and dc circuit breaker system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10389104B1 (en) * | 2015-01-09 | 2019-08-20 | Clemson University | Circuit breaker for DC circuits using coupled induction |
| CN106159880B (en) * | 2015-03-27 | 2019-07-12 | 积能环保电机工程科技有限公司 | DC solid circuit breaker and distribution system |
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| WO2007064837A2 (en) * | 2005-11-30 | 2007-06-07 | Electric Power Research Institute, Inc. | A multifunction hybrid solid-state switchgear |
| CN101540493A (en) * | 2009-04-22 | 2009-09-23 | 南京航空航天大学 | Resonance type DC solid circuit breaker |
| CN102222874A (en) * | 2011-06-10 | 2011-10-19 | 南京航空航天大学 | Direct-current solid-state circuit breaker |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107370119A (en) * | 2017-06-23 | 2017-11-21 | 上海交通大学 | Solid-state direct-current breaker and its control method based on capacitance energy storage |
| CN107370119B (en) * | 2017-06-23 | 2019-06-21 | 上海交通大学 | Solid-state direct-current breaker and its control method based on capacitive energy storage |
| CN107516876A (en) * | 2017-08-07 | 2017-12-26 | 上海科梁信息工程股份有限公司 | A kind of direct current interruption device applied to flexible DC power transmission |
| CN107592101A (en) * | 2017-09-07 | 2018-01-16 | 电子科技大学 | A kind of DC solid circuit breaker based on negative electrode short circuit grid-controlled transistor |
| CN107592101B (en) * | 2017-09-07 | 2019-06-04 | 电子科技大学 | A kind of DC solid circuit breaker based on cathode short circuit grid-controlled transistor |
| CN110071476A (en) * | 2019-04-15 | 2019-07-30 | 杭州拓深科技有限公司 | A kind of quick electrical circuit fault detection and route cut-off equipment and control method |
| CN110071476B (en) * | 2019-04-15 | 2021-08-27 | 杭州拓深科技有限公司 | Rapid electric line fault detection and line cutting equipment and control method |
| CN112448466A (en) * | 2019-09-04 | 2021-03-05 | 台达电子工业股份有限公司 | DC non-power-off power supply device with bidirectional protection function |
| CN110752581A (en) * | 2019-11-28 | 2020-02-04 | 深圳大学 | Direct current solid-state circuit breaker |
| WO2023011739A1 (en) | 2021-08-06 | 2023-02-09 | Experience Knowledge Strategy, S.L. | A dc solid state circuit breaker and dc circuit breaker system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107534438A (en) | 2018-01-02 |
| CN106159880B (en) | 2019-07-12 |
| WO2016155598A1 (en) | 2016-10-06 |
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