CN104900388B - Superconduction with often lead compound flat ripple current-limiting reactor and its control method - Google Patents
Superconduction with often lead compound flat ripple current-limiting reactor and its control method Download PDFInfo
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- CN104900388B CN104900388B CN201510239475.0A CN201510239475A CN104900388B CN 104900388 B CN104900388 B CN 104900388B CN 201510239475 A CN201510239475 A CN 201510239475A CN 104900388 B CN104900388 B CN 104900388B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
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Abstract
The invention discloses a kind of superconduction with often lead compound flat ripple current-limiting reactor, it is main often to lead inductance coil, oppositely wound often lead inductance coil and often lead switch combination including superconduction inductance coil, superconducting switch combination, positive coiling.The without hindrance switch of the first superconduction and superconduction inductance coils from parallel connection of coils inside superconducting switch combination, after the without hindrance switch of the second superconduction and superconducting current-limiting switch in parallel, then connect with superconduction inductance coil.Superconducting switch is combined and often leads conducting state switching of the switch combination by internal switch, realize superconduction inductance coil, superconducting switch combination, often lead inductance coil, often the combination connection in series-parallel type of attachment led between switch combination, realize superconduction with variable inductance value and variable resistance and often lead compound flat ripple current-limiting reactor.It has taken into account single super conducting electric reactor and the single application characteristic for often leading reactor, possesses the flat ripple of more efficient direct current network and current-limiting function, and effectively increase the operational efficiency and device economy of super conducting electric reactor.
Description
Technical field
The present invention relates to the reactor field of power system, more particularly to one kind of protecting electrical power system is used for direct current network
The flat ripple current-limiting reactor of system.
Background technology
Reactor with Ping Bo or current-limiting function, has a wide range of applications in direct current network system.Particularly have
The introducing of permission working current density very high and the superconductor of the resistivity for being approximately zero so that by superconductivity wire coiling
Super conducting electric reactor have by often wire coiling often lead the technological merit that reactor cannot be realized, such as work electricity
Flow big, low running wastage, small volume, lightweight etc..Meanwhile, the high electrical resistance after being quenched using superconductor, super conducting electric reactor
The requirement of current limliting high impedance can be met.Therefore, the super conducting electric reactor for having both flat wave energy and current-limiting function can replace often conductive
Anti- device, is with a wide range of applications in direct current network system.
But, being limited by the cost of expensive superconductivity wire, the economy of super conducting electric reactor is relatively low；Simultaneously as straight
Stream line voltage has certain fluctuation, and super conducting electric reactor still suffers from certain operation energy loss, imitated by Carnot cycle
The influence of rate, the electric energy of supporting cryogenic refrigerating system actual consumption be tens times of the operation energy loss of super conducting electric reactor with
On.Therefore, two prominent actual application problems that super conducting electric reactor faces are how the dress by reducing super conducting electric reactor
This is set to the economy for improving super conducting electric reactor and the energy loss for how reducing super conducting electric reactor to improve super conducting electric reactor
Operational efficiency.Additionally, the heat produced during short trouble current limliting will cause the steep temperature rise of low-temperature refrigerant, or even
A large amount of volatilizations, this would potentially result in the thermal instability of super conducting electric reactor, and cause potential safety hazard, such as damage in super conducting electric reactor
Core superconduction winding part.
The content of the invention
It is an object of the invention to overcome the above-mentioned deficiency in the presence of prior art, there is provided a kind of for direct current network
Superconduction with variable inductance value and variable resistance with often lead compound flat ripple current-limiting reactor.
In order to realize foregoing invention purpose, a kind of superconduction proposed by the present invention with often lead compound flat ripple current-limiting reactor,
Including superconductive element, part, support baseboard and roof supporting are often led, the superconductive element includes that superconduction inductance coil, superconduction are opened
Close combination, cooled cryostat and superconduction binary current lead；The first upper backup pad and are had on the superconduction inductance coil
One lower supporting plate, screw connection is provided between first upper backup pad and the first lower supporting plate；Superconducting switch combination with
First upper backup pad is fixed；The superconducting switch combination includes the without hindrance switch of superconduction, the without hindrance switch of superconduction and superconducting current-limiting
Switch；The without hindrance switch of superconduction is connected with superconduction inductance coils from parallel connection of coils；The without hindrance switch of superconduction is with superconducting current-limiting switch simultaneously
After connection, then it is connected in series with superconduction inductance coil；The cooled cryostat is arranged on the support baseboard, in the cooled cryostat
Filled with low-temperature refrigerant, seal cover board, first upper backup pad and the closure are provided with above the cooled cryostat
Plate is connected, and the superconduction inductance coil and superconducting switch combination are fully immersed in the low-temperature refrigerant in cooled cryostat；
The seal cover board is provided with input duct, drain pipe road and low-temperature insulation sleeve pipe；The one of the input duct and drain pipe road
End stretches to the inside of the cooled cryostat, and the other end in the input duct and drain pipe road is connected to low temperature Du
The cryogenic refrigerating system of watt outside is connected, so that a low-temperature refrigerant circulation cooling circuit is constituted, the low-temperature refrigerant circulation
Cooling circuit is combined for cooling down the superconduction inductance coil with superconducting switch；The top of the superconduction binary current lead and institute
State low-temperature insulation sleeve pipe to be connected, the bottom of the superconduction binary current lead is located in the cooled cryostat；The superconduction inductance
Coil and superconducting switch combination are connected by superconduction transition wire with the bottom of the superconduction binary current lead；It is described often to lead portion
Part include positive coiling often lead inductance coil and it is oppositely wound often lead inductance coil, the positive coiling often leads inductor wire
Circle and oppositely wound often leading be provided with above inductance coil the second upper backup pad, second upper backup pad and the support bottom
Screw connection is provided between plate；The inductance coil of often leading of the positive coiling is often led inductance coil and is connected in series with oppositely wound
And after Same Name of Ends is connected, then be connected in series with superconduction inductance coil；It is described often to lead switch combination on the roof supporting,
Screw connection is provided between the roof supporting and support baseboard, described often lead switch combination often leads switch, second including first
Often lead switch and the 3rd and often lead switch；Described first often leads switch is connected with the oppositely wound normal conductive sense coils from parallel connection of coils；
Described first when often leading switch closure, and the inductance coil of often leading of the positive coiling oppositely wound often leads inductance coil with described
Constitute one and often lead noninductive coil；Described second often lead switch and the positive coiling often lead inductance coil, oppositely wound
Often lead inductance coil series connection after, then often lead switch in parallel and be connected with the 3rd；The top of the superconduction binary current lead passes through
First often lead transition wire be located at outside cooled cryostat normal lead switch combination and be connected；The normal of the positive coiling leads inductor wire
Circle often leads switches set by the second normal transition wire of leading with oppositely wound inductance coil of often leading with outside cooled cryostat
Close and be connected；The output port for often leading switch combination is connected with the direct current network of outside；By switching the superconducting switch group
Conjunction and the conducting state for often leading switch combination, realize that superconduction inductance coil, superconducting switch combination, the normal of positive coiling lead inductor wire
Circle and the oppositely wound type of attachment often led between inductance coil.
Superconduction of the present invention and the control method for often leading compound flat ripple current-limiting reactor, be：Opened by switching the superconduction
Combination and the conducting state for often leading switch combination are closed, superconduction inductance coil, superconducting switch combination, the normal conduction of positive coiling is realized
Sense coil and the oppositely wound type of attachment often led between inductance coil, including following several situations：
(1) when direct current network voltage pulsation is less than default voltage pulsation threshold value, the superconduction is without hindrance to be switched off, institute
State without hindrance switch of superconduction to close, the superconducting current-limiting is switched off, first often leads switch closure, and the second normal leading switches off, the
Three often lead switch closure, and now, the superconduction inductance coil accesses to direct current network, for the flat ripple treatment of line voltage；
(2) when direct current network voltage pulsation is more than or equal to default voltage pulsation threshold value, the without hindrance switch of superconduction
Disconnect, the without hindrance switch closure of superconduction, the superconducting current-limiting is switched off, and first often leads switch closure, and second often leads switch
Closure, the 3rd often leads and switches off, now, the superconduction inductance coil be connected in series and positive coiling that different name end is connected
Often leading inductance coil accesses to direct current network, for the flat ripple treatment of line voltage；
(3) when direct current network fault current is less than default Fisrt fault current threshold, the without hindrance switch of superconduction is disconnected
Open, superconduction is without hindrance to switch closure, and superconducting current-limiting is switched off, first often leads switch closure, and the second normal leading switches off, and the 3rd is normal
Switch closure is led, now, the superconduction inductance coil accesses to direct current network, for the current limliting treatment of electric network fault electric current；
(4) when direct current network fault current is more than or equal to default Fisrt fault current threshold, and less than default the
During two failure current thresholds, the superconduction is without hindrance to be switched off, and the superconduction is without hindrance to be switched off, and the superconducting current-limiting switch is closed
Close, first often leads switch closure, and second often leads and switch off, the 3rd often leads switch closure, now, the superconduction inductance coil with
The superconducting current-limiting switch being connected in series accesses to direct current network, for the current limliting treatment of electric network fault electric current；
(5) when direct current network fault current is more than or equal to default second failure current thresholds, the superconduction is without hindrance
Switch off, superconduction is without hindrance to be switched off, superconducting current-limiting switch closure, the first normal leading switches off, second often leads switch closure,
3rd normal leading switches off, and now, the superconduction inductance coil often leads inductance coil with superconducting current-limiting switch, by positive coiling
Often the leading after noninductive coil is connected in series of inductance coil composition is often led with oppositely wound, then accesses to direct current network, for electricity
The current limliting treatment of net voltage；
(6) it is when direct current network fault current duration is more than or equal to default duration threshold or described low
When low-temperature refrigerant temperature inside warm Dewar is more than or equal to default temperature threshold, the without hindrance switch closure of superconduction, institute
The without hindrance switch closure of superconduction is stated, the superconducting current-limiting is switched off, and the first normal leading switches off, second often leads switch closure, the
Three often lead and switch off, now, by positive coiling often lead inductance coil with it is oppositely wound often lead that inductance coil constitutes it is normal
Lead noninductive coil and access to direct current network, for the current limliting treatment of line voltage；The superconduction inductance coil by the first superconduction without
Resistance switch short treatment, it is to avoid the potential safety hazard that low-temperature refrigerant temperature overheating is caused.
Preferably, the superconduction inductance coil is formed by BSCCO or YBCO superconductivity wire coilings；The superconduction transition wire
It is the superconduction wire long being made up of BSCCO or YBCO superconductivity wires；The top of the superconduction binary current lead is by copper or aluminium
What wire was constituted often leads wire long, and the bottom of the superconduction binary current lead is made up of BSCCO or YBCO superconductivity wires
Superconduction wire long；The superconduction binary current lead structure effectively reduces the heat leakage of cooled cryostat, improves whole system
Operational efficiency.
Preferably, it is described often to lead switch combination and be made up of power electronic switching or mechanical switch；The superconducting switch combination
It is made up of with a BSCCO or YBCO superconducting cylinder shape bar four pieces of BSCCO or YBCO superconduction patty bulks；Four pieces of superconduction circles
Cheese bulk is placed in parallel successively with superconducting cylinder shape bar, and by between adjacent superconduction patty bulk, superconduction patty
Contacting with each other between bulk and superconducting cylinder shape bar separates and forms corresponding superconducting switch.Four pieces of BSCCO or YBCO
Superconduction patty bulk includes superconduction patty bulk A, superconduction patty bulk B, superconduction patty bulk C and superconduction patty
Bulk D；The superconduction patty bulk A is connected together to a superconducting switch contact, the superconduction with superconducting cylinder shape bar
Patty bulk B and superconduction patty bulk D is connected together to a superconducting switch contact, and the superconduction patty bulk C is mono-
Solely as a superconducting switch contact；The superconduction patty bulk A and superconduction patty bulk B constitutes the without hindrance switch of superconduction,
The superconduction patty bulk C and superconduction patty bulk D constitutes the without hindrance switch of superconduction, the superconduction patty bulk D
Superconducting current-limiting is constituted with superconducting cylinder shape bar to switch.Compared with the current only superconducting switch of without hindrance conducting, the superconduction
The superconducting switch function as without hindrance conducting and as failure current limit has been had both in switch combination.
Preferably, the positive coiling often leads inductance coil and oppositely wound often lead inductance coil and often led by copper or aluminium
Wire coiling is formed；The copper or aluminium often wire be by two have equal length " L " shape wires through insulation processing after, it is embedding
The length-width ratio that set turns into is 3：2 parallel combination type often leads wire long；The parallel combination type often leads one of them of wire long
After end welds together, then it is wound on a bobbin, is connected in series and Same Name of Ends connected positive coiling with being formed
Often lead inductance coil and oppositely wound often lead inductance coil；Described first often leads transition wire and second often leads transition wire and is
By copper or aluminium often wire constitute often lead wire long.Wire long is often directly led using square or square-section with current
The parallel-connection structure of composition is compared, and the length-width ratio is approximately 3：2 parallel combination type often leads wire long has more efficient magnetic field
Cancel function, so be more conducive to obtain inductance value be approximately zero often lead noninductive coil.
Preferably, what the superconduction inductance coil was arranged on the positive coiling often leads inductance coil and oppositely wound normal
The centre position of the inner chamber of inductance coil is led, the magnetic field for often leading inductance coil generation of the positive coiling superconducts as described
Feel the background magnetic field of coil, serve the effect of field weakening, so as to increase the critical current of superconduction inductance coil, reduce
The resistance value of superconduction inductance coil, finally improves superconduction and often leads the operational efficiency of compound flat ripple current-limiting reactor.
Preferably, the superconducting switch combination is installed in the centre position of the inner chamber of superconduction inductance coil, superconduction inductor wire
The background magnetic field that the superconducting current-limiting enclosed during the magnetic field for producing is combined as superconducting switch is switched, serves magnetic field-enhanced effect,
So as to reduce the critical current of superconduction inductance coil, increase the resistance value of superconduction inductance coil, finally improve superconduction with
Often lead the current limitation effect of compound flat ripple current-limiting reactor.
Compared with prior art, the beneficial effects of the invention are as follows：
1. the present invention has not only taken into account single super conducting electric reactor and the single application characteristic for often leading reactor, and tool
The standby more efficient flat ripple of direct current network and current-limiting function.
2. the present invention is effectively solving direct current using superconduction inductance coil and normal conductive sense or the tandem plan of noninductive coil
On the basis of voltage pulsation problem and short trouble current limliting problem in power network, the operational efficiency of super conducting electric reactor is effectively increased
With device economy.
3. the present invention is combined using the superconducting switch for having had both without hindrance conducting and failure current limit function, on the one hand enhances dress
Put the ability to short trouble current limliting, on the other hand also effectively protect superconduction inductance coil, it is to avoid low-temperature refrigerant temperature
The potential safety hazard that overheat is caused.
Brief description of the drawings
Fig. 1 is superconduction of the present invention and the structure chart for often leading compound flat ripple current-limiting reactor；
Fig. 2 is the internal switching structures figure of superconducting switch combination in the present invention；
Fig. 3 is that the parallel combination type often led used by inductance coil in the present invention often leads conductor structure figure long；
Fig. 4 is superconduction and the circuit diagram for often leading compound flat ripple current-limiting reactor.
In figure：
1- superconductions inductance coil 2,21- bobbins
3- the first upper backup pad the first lower supporting plates of 4-
5th, 7,13,24,27- screw connection 6- superconducting switch combination
The without hindrance switch 9- second without hindrance switches of superconduction of the superconductions of 8- first
10- superconducting current-limitings switch 11- cooled cryostats
12- seal cover board 14- input ducts
15- drain pipes road 16- superconduction binary current leads
17- low-temperature insulation sleeve pipe 18- superconduction transition wires
19- forward direction coiling often lead inductance coil 20- it is oppositely wound often lead inductance coil
22- upper backup pad 23- support baseboards
25- often leads switch combination 26- roof supportings
The second lower supporting plates of 28- 29- first often leads switch
30- second often leads switch 31- the 3rd and often leads switch
Often lead transition wire 33- second often leads transition wire to 32- first
34- output ports
Specific embodiment
Technical solution of the present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings, described is specific
Embodiment is only explained to the present invention, is not intended to limit the invention.
As shown in figure 1, a kind of superconduction of the invention with often lead compound flat ripple current-limiting reactor, including superconductive element, often lead
Part, support baseboard 23 and roof supporting 26.
The superconductive element includes the combination 6, cooled cryostat 11 of superconduction inductance coil 1, superconducting switch and superconduction binary current
Lead 16；The superconduction inductance coil 1 possesses its bobbin 2, is had on the superconduction inductance coil 1 solid for installing
Determine first upper backup pad 3 and the first lower supporting plate 4 of superconduction inductance coil 1, the lower supporting plate of first upper backup pad 3 and first
Screw connection 5 is provided between 4.The superconducting switch combination 6 is fixed on first upper backup pad 3 by screw connection 7
On；The superconducting switch combination 6 includes the without hindrance switch 9 of the first superconduction the 8, second superconduction of without hindrance switch and superconducting current-limiting switch 10；
As shown in figure 4, the without hindrance switch 8 of the first superconduction is connected in parallel with superconduction inductance coil 1；The without hindrance switch 9 of second superconduction
After in parallel with superconducting current-limiting switch 10, then it is connected in series with superconduction inductance coil 1.As shown in figure 1, the cooled cryostat 11 is installed
On the support baseboard 23, low-temperature refrigerant is filled with the cooled cryostat 11, the low-temperature refrigerant is low temperature liquid nitrogen；
The top of the cooled cryostat 11 is provided with seal cover board 12, and first upper backup pad 3 passes through screw connection 13 and the sealing
Cover plate 12 is connected, and the superconduction inductance coil 1 and the superconducting switch combine the 6 low temperature systems being fully immersed in cooled cryostat 11
In cryogen；The seal cover board 12 is provided with the input duct 14 and drain pipe road 15 of low-temperature refrigerant, and low-temperature insulation sleeve pipe
17；The one end in the input duct 14 and drain pipe road 15 stretches to the inside of the cooled cryostat 11, the input duct
14 cryogenic refrigerating systems being connected to outside the cooled cryostat 11 with the other end in drain pipe road 15 are connected, so as to constitute one
Low-temperature refrigerant circulation cooling circuit, the low-temperature refrigerant circulation cooling circuit be used for cool down the superconduction inductance coil 1 with
Superconducting switch combination 6.The top of the superconduction binary current lead 16 is connected with the low-temperature insulation sleeve pipe 17, the superconduction two
The bottom of elementary current lead 16 is located in the cooled cryostat 11；The superconduction inductance coil 1 and superconducting switch combination 6 are by super
Transition wire 18 is led to be connected with the bottom of the superconduction binary current lead 16.
The part of often leading includes often leading inductance coil 19 and oppositely wound often leading inductance coil 20, institute for positive coiling
State positive coiling often lead inductance coil 19 and oppositely wound often leading inductance coil 20 possesses bobbin 21.It is described it is positive around
System often lead inductance coil 19 and the oppositely wound top for often leading inductance coil 20 is provided with the second upper backup pad 22, described second
Upper backup pad 22 is installed with the support baseboard 23 by screw connection 24 and fixed；As shown in figure 4, the normal of the positive coiling is led
Inductance coil 19 is connected and after Same Name of Ends is connected with oppositely wound inductance coil 20 of often leading, then is connected with superconduction inductance coil 1.
As shown in figure 4, the inductance value of the superconduction inductance coil 1 is L1, resistance value is R1；The normal of positive coiling leads inductance coil 19
Inductance value is L2, resistance value is R2；The oppositely wound inductance value for often leading inductance coil 20 is L3, resistance value is R3；Superconduction inductance
The mutual inductance for often leading inductance coil 20 of coil 1 and positive coiling is M.
As shown in figure 1, described often lead switch combination 25 on the roof supporting 26, the roof supporting 26 passes through
Screw connection 27 and support baseboard 23 are installed and fixed, described often to lead switch combination 25 and be made up of power electronic switching, also may be used
Constituted with by mechanical switch.As shown in figure 4, described often lead switch combination 25 and be made up of three power electronic switchings, i.e., including the
One often leads the normal switch 30 and the 3rd of leading of switch 29, second often leads switch 31；Described first often to lead switch 29 oppositely wound with described
Often to lead inductance coil 19 in parallel；Described first often lead switch 29 close when, the positive coiling often lead inductance coil 19 with
It is described it is oppositely wound often lead inductance coil 20 and constitute one often lead noninductive coil；Described second often lead switch 30 with it is described just
To coiling often lead inductance coil 19, it is oppositely wound often lead after inductance coil 20 connects, then often to lead switch 31 with the 3rd in parallel.
As shown in figure 1, the top of the superconduction binary current lead 16 is often led transition wire 32 and is located at cooled cryostat 11 by first
Outside switch combination 25 of often leading is connected；The inductance coil 19 of often leading of the positive coiling often leads inductance coil with oppositely wound
20 by second often lead transition wire 33 be located at outside cooled cryostat 11 normal lead switch combination 25 and be connected；It is described often to lead switch
The output port 34 of combination 25 is connected with the direct current network of outside.
The superconduction inductance coil 1 is formed by BSCCO or YBCO superconductivity wire coilings；The superconduction transition wire 18 is served as reasons
The superconduction wire long that BSCCO or YBCO superconductivity wires are constituted；The top of the superconduction binary current lead 16 is to be led by copper or aluminium
What line was constituted often leads wire long, and the bottom of the superconduction binary current lead 16 is made up of BSCCO or YBCO superconductivity wires
Superconduction wire long, the structure of superconduction binary current lead 16 effectively reduces the heat leakage of cooled cryostat 11, improves whole
The operational efficiency of system.
As shown in Fig. 2 the superconducting switch combination 6 is by four pieces of BSCCO or YBCO superconductions patty bulk A, B, C, D and
Root BSCCO or YBCO superconducting cylinder shape bar E is constituted；Four pieces of superconduction patty bulks are parallel successively with superconducting cylinder shape bar to be put
Put, and by contacting with each other between adjacent superconduction patty bulk, between superconduction patty bulk and superconducting cylinder shape bar
Or separate and form corresponding superconducting switch.Four pieces of BSCCO or YBCO superconduction patties bulks include superconduction patty bulk A,
Superconduction patty bulk B, superconduction patty bulk C and superconduction patty bulk D；The superconduction patty bulk A justifies with superconduction
Tubular bar E is connected together to a superconducting switch contact a, and the superconduction patty bulk B is connected with superconduction patty bulk D
To form a superconducting switch contact b, the superconduction patty bulk C is separately as a superconducting switch contact c；The superconduction
Patty bulk A and superconduction patty bulk B constitutes the without hindrance switch 9 of second superconduction, the superconduction patty bulk C and institute
State superconduction patty bulk D and constitute the without hindrance switch 8 of first superconduction, the superconduction patty bulk D and superconducting cylinder shape rod
Material constitutes the superconducting current-limiting switch 10；Compared with the current only superconducting switch of without hindrance conducting, the superconducting switch combination 6
The superconducting switch function as without hindrance conducting and as failure current limit is had both.
The positive coiling often leads inductance coil 19 and oppositely wound often lead inductance coil 20 and often led by copper or aluminium
Line coiling is formed；As shown in figure 3, the copper or aluminium often wire be by two have equal length " L " shape wires through insulation
After treatment, the length-width ratio that nesting turns into is 3：2 parallel combination type often leads wire long, and the parallel combination type of " L " shape is often led length and led
Line can be obtained by often leading after wire long cuts 1/4 sectional area for square section, after one of end welds together, then
It is wound on bobbin 21, is connected in series and inductance coil 19 and reversely is often led in the connected positive coiling of Same Name of Ends with being formed
The normal of coiling leads inductance coil 20.
The superconducting switch combination 6 is arranged on the centre position of the inner chamber of superconduction inductance coil 1, and superconduction inductance coil 1 is produced
Raw magnetic field switchs 10 background magnetic field as the superconducting current-limiting in superconducting switch combination 6, so as to reduce superconduction inductance coil 1
Critical current, increase the resistance value of superconduction inductance coil 1.
In the present invention described first often leads transition wire 32 and second, and often to lead transition wire 33 be often to be led by copper or aluminium
What line was constituted often leads wire long.
6 are combined with the conducting state for often leading switch combination 25 by the superconducting switch switched in the present invention, and realization surpasses
Lead inductance coil 1, superconducting switch combination 6, the inductance coil 19 of often leading of positive coiling often leads inductance coil 20 with oppositely wound
Between type of attachment.
For the flat ripple application of line voltage in direct current network system, using superconduction of the invention with often lead compound flat ripple
Current-limiting reactor carries out real-Time Compensation to the line voltage in direct current network system normal course of operation, to reach the work of flat ripple
With.
(1) when direct current network voltage pulsation be less than default voltage pulsation threshold value when, superconduction of the present invention with often lead it is compound
Flat ripple current-limiting reactor is operated in the flat ripple mode of operation of one-level, i.e.,：The without hindrance switch 8 of first superconduction disconnects, described the second to surpass
Lead without hindrance switch 9 to close, the superconducting current-limiting switch 10 disconnects, first often leads switch 29 closes, second often leads switch 30 disconnects,
3rd often leads switch 31 closes, and now, only described superconduction inductance coil 1 accesses to direct current network, for the flat of line voltage
Ripple treatment.So, superconduction just can provide power network with compound flat ripple current-limiting reactor is often led by single superconduction inductance coil
Voltage real-Time Compensation function, to meet the normal operating flat ripple demand of line voltage of direct current network system.Now, superconduction inductance
The actual motion electric current of coil is less than its critical current, resistance value R1Zero is approximately, whole superconduction is limited with compound flat ripple is often led
The operational efficiency for flowing reactor is very high.
(2) when direct current network voltage pulsation is more than or equal to default voltage pulsation threshold value, superconduction of the present invention is led with often
Compound flat ripple current-limiting reactor is operated in two grades of flat ripple mode of operations, i.e.,：The without hindrance switch 8 of first superconduction disconnects, described
The without hindrance switch 9 of second superconduction is closed, and the superconducting current-limiting switch 10 disconnects, and first often leads switch 29 closes, and second often leads switch
30 closures, the 3rd often leads switch 31 disconnects, now, the positive coiling that the superconduction inductance coil 1 is connected with series connection and different name end
Often lead inductance coil 19 and access to direct current network, for the flat ripple treatment of line voltage.So, superconduction with often lead it is compound flat
Ripple current-limiting reactor just can be by superconduction inductance coil and often lead inductance coil provides line voltage real-Time Compensation function jointly, with
Meet the normal operating flat ripple demand of larger line voltage of direct current network system.
As shown in figure 1, superconduction with when often leading compound flat ripple current-limiting reactor and being operated in two grades of flat ripple mode of operations, it is described
Superconduction inductance coil 1 is arranged on often leading inductance coil 19 and oppositely wound often leading the interior of inductance coil 20 for the positive coiling
The centre position in chamber, the positive coiling often lead inductance coil 19 generation magnetic field as the superconduction inductance coil 1 the back of the body
Scape magnetic field, so as to increase the critical current of superconduction inductance coil 1, reduces the resistance value of superconduction inductance coil 1, final to improve
Superconduction and the operational efficiency for often leading compound flat ripple current-limiting reactor.
For the short trouble current limliting application in direct current network system, using superconduction of the invention with often lead compound flat ripple
Current-limiting reactor is suppressed in real time to the electric network fault electric current in direct current network system failure running, to reach current limliting
Effect.
(1) during the failure operation of direct current network system, when direct current network fault current is less than the default first event
During barrier current threshold, superconduction is operated in one-level current limliting mode of operation with compound flat ripple current-limiting reactor is often led, i.e.,：Described first
The without hindrance switch 8 of superconduction is disconnected, and the without hindrance switch 9 of the second superconduction is closed, and superconducting current-limiting switch 10 disconnects, and first often leads switch 29 closes
Close, second often leads switch 30 disconnects, the 3rd often leads switch 31 closes, and now, only described superconduction inductance coil 1 accesses to direct current
Power network, for the current limliting treatment of electric network fault electric current.High electrical resistance after being quenched using superconductor, super conducting electric reactor can meet
The requirement of current limliting high impedance, and play preferable current limitation effect.The superconduction inductance coil 1 is by the coiling of YBCO superconductivity wires
Into.The superconduction transition wire is the superconduction wire long being made up of YBCO superconductivity wires.The superconduction binary current lead it is upper
Portion is the wire long being made up of copper conductor, and bottom is the superconduction wire long being made up of YBCO superconductivity wires.The superconducting switch group
Conjunction is made up of four pieces of YBCO superconductions patty bulk A, B, C, D with a YBCO superconducting cylinder shape bars E；The low-temperature refrigerant
It is low-temperature liquid helium.It is described often to lead switch combination and be made up of three mechanical switch.
(2) during the failure operation of direct current network system, when direct current network fault current is more than or equal to default
Fisrt fault current threshold, and during less than default second failure current thresholds, superconduction with often lead compound flat ripple current-limiting reactor
Device is operated in two grades of current limliting mode of operations, i.e.,：The without hindrance switch 8 of first superconduction disconnects, and the without hindrance switch 9 of the second superconduction breaks
Open, the superconducting current-limiting switch 10 is closed, first often leads switch 29 closes, second often leads switch 30 disconnects, and the 3rd often leads switch
31 closures, now, the superconduction inductance coil 1 accesses to direct current network with the superconducting current-limiting switch 10 connected, for power network event
Hinder the current limliting treatment of electric current.So, superconduction with often lead compound flat ripple current-limiting reactor just can be by superconduction inductance coil and super
Lead the real-time suppression function that current limiting switch provides electric network fault electric current jointly, with meet the direct current network system failure it is operating compared with
Current limliting high impedance demand high.The superconducting switch combination 6 is arranged on the centre position of the inner chamber of superconduction inductance coil 1, superconduction
The magnetic field that inductance coil 1 is produced serves magnetic field increasing as the background magnetic field of the superconducting current-limiting switch 10 in superconducting switch combination 6
Strong effect, reduces the critical current of superconduction inductance coil 1, increases the resistance value of superconduction inductance coil 1, finally improves
Superconduction and the current limitation effect for often leading compound flat ripple current-limiting reactor.
(3) during the failure operation of direct current network system, when direct current network fault current is more than or equal to default
During the second failure current thresholds, superconduction is operated in three-level current limliting mode of operation with compound flat ripple current-limiting reactor is often led, i.e.,：Institute
State the without hindrance switch 8 of the first superconduction to disconnect, the without hindrance switch 9 of the second superconduction is disconnected, and superconducting current-limiting switch 10 is closed, and first often leads switch
29 disconnect, and second often leads switch 30 closes, and the 3rd often leads switch 31 disconnects, now, the superconduction inductance coil 1 and superconducting current-limiting
Switch 10, by positive coiling often lead inductance coil 19 with it is oppositely wound often lead that inductance coil 20 constitutes often lead noninductive coil
After series connection, then direct current network is accessed to, for the current limliting treatment of line voltage.So, superconduction with often lead compound flat ripple current limliting
Reactor can just be switched by superconduction inductance coil, superconducting current-limiting and often lead the reality that noninductive coil provides electric network fault electric current jointly
When suppress function, to meet the operating current limliting high impedance demand very high of the direct current network system failure.
(4) it is when direct current network fault current duration is more than or equal to default duration threshold or described low
When low-temperature refrigerant temperature inside warm Dewar 11 is more than or equal to default temperature threshold, superconduction is limited with compound flat ripple is often led
Stream reactor is operated in level Four current limliting mode of operation, i.e.,：The without hindrance switch 8 of first superconduction is closed, and second superconduction is without hindrance
Switch 9 is closed, and the superconducting current-limiting switch 10 disconnects, and first often leads switch 29 disconnects, and second often leads switch 30 closes, and the 3rd is normal
Lead switch 31 to disconnect, now, often lead what inductance coil 20 was constituted with oppositely wound by the inductance coil 19 of often leading of positive coiling
Often leading noninductive coil accesses to direct current network, for the current limliting treatment of line voltage.So, superconduction is limited with compound flat ripple is often led
Stream reactor just can individually provide the real-time suppression function of electric network fault electric current by often leading noninductive coil, to meet direct current network
The operating current limliting high impedance demand of the system failure.Now, superconduction inductance coil 1 is processed by the without hindrance short circuit of switch 8 of the first superconduction,
Avoid the potential safety hazard that low-temperature refrigerant temperature overheating is caused.
Although above in conjunction with accompanying drawing, invention has been described, the invention is not limited in above-mentioned specific implementation
Mode, above-mentioned specific embodiment is only schematical, and rather than restricted, one of ordinary skill in the art is at this
Under the enlightenment of invention, without deviating from the spirit of the invention, many variations can also be made, these belong to of the invention
Within protection.
Claims (8)
1. a kind of superconduction with often lead compound flat ripple current-limiting reactor, including superconductive element, often lead part, support baseboard (23) and
Roof supporting (26), it is characterised in that：
The superconductive element includes superconduction inductance coil (1), superconducting switch combination (6), cooled cryostat (11) and superconduction binary electricity
Stream lead (16)；
The first upper backup pad (3) and the first lower supporting plate (4) are had on the superconduction inductance coil (1), on described first
Screw connection (5) is provided between supporting plate (3) and the first lower supporting plate (4)；
Superconducting switch combination (6) is fixed with first upper backup pad (3)；Superconducting switch combination (6) is including first
The without hindrance switch of superconduction (8), the without hindrance switch of the second superconduction (9) and superconducting current-limiting switch (10)；The without hindrance switch of first superconduction (8)
It is connected in parallel with superconduction inductance coil (1)；After the without hindrance switch of second superconduction (9) is in parallel with superconducting current-limiting switch (10), then
It is connected in series with superconduction inductance coil (1)；
The cooled cryostat (11) is filled with cryogenic refrigeration on the support baseboard (23) in the cooled cryostat (11)
Agent, is provided with seal cover board (12), first upper backup pad (3) and the seal cover board above the cooled cryostat (11)
(12) be connected, the superconduction inductance coil (1) and the superconducting switch combine (6) be fully immersed in it is low in cooled cryostat (11)
In warm refrigerant；The seal cover board (12) is provided with input duct (14), drain pipe road (15) and low-temperature insulation sleeve pipe (17)；
One end of the input duct (14) and drain pipe road (15) stretches to the inside of the cooled cryostat (11), the feed tube
Road (14) is connected to the outside cryogenic refrigerating system of the cooled cryostat (11) and is connected with the other end of drain pipe road (15), from
And a low-temperature refrigerant circulation cooling circuit is constituted, the low-temperature refrigerant circulation cooling circuit is used to cool down the superconduction inductance
Coil (1) is combined (6) with superconducting switch；
The top of the superconduction binary current lead (16) is connected with the low-temperature insulation sleeve pipe (17), the superconduction binary current
The bottom of lead (16) is located in the cooled cryostat (11)；
The superconduction inductance coil (1) and superconducting switch combination (6) are by superconduction transition wire (18) and superconduction binary electricity
The bottom of stream lead (16) is connected；
The part of often leading includes often leading inductance coil (19) and oppositely wound normal leading inductance coil (20), institute for positive coiling
State positive coiling often lead inductance coil (19) and oppositely wound often leading be provided with above inductance coil (20) support on second
Plate (22), screw connection (24) is provided between second upper backup pad (22) and the support baseboard (23)；It is described it is positive around
The inductance coil (19) of often leading of system often leads inductance coil (20) series connection and after Same Name of Ends is connected with oppositely wound, then with superconduct
Sense coil (1) series connection；
It is provided with the roof supporting (26) and often leads switch combination (25), the roof supporting (26) and support baseboard (23)
Between be provided with screw connection (27), it is described often to lead switch combination (25) and often lead switch (29) including first, second often lead switch
And the 3rd often leads switch (31) (30)；Described first often lead switch (29) with it is described it is oppositely wound it is normal lead inductance coil (19) and
Connection；Described first often leads switch (29) when closing, and to lead inductance coil (19) oppositely wound with described for the positive coiling normal
Often lead inductance coil (20) and constitute one and often lead noninductive coil；Described second often to lead switch (30) normal with the positive coiling
Lead inductance coil (19), it is oppositely wound often lead inductance coil (20) series connection after, then often to lead switch (31) with the 3rd in parallel；
Transition wire (32) is often led by first and be located at cooled cryostat (11) in the top of the superconduction binary current lead (16)
Outside switch combination (25) of often leading is connected；The inductance coil (19) of often leading of the positive coiling is felt with oppositely wound normal conduction
Coil (20) is often led transition wire (33) and is connected with being located at outside normal of cooled cryostat (11) and lead switch combination (25) by second；
The output port (34) for often leading switch combination (25) is connected with the direct current network of outside；
(6) and the normal conducting state for leading switch combination (25) are combined by switching the superconducting switch, superconduction inductance coil is realized
(1), superconducting switch combination (6), positive coiling often lead inductance coil (19) with it is oppositely wound often lead inductance coil (20) it
Between type of attachment.
2. superconduction according to claim 1 with often lead compound flat ripple current-limiting reactor, it is characterised in that：
The superconduction inductance coil (1) is formed by BSCCO or YBCO superconductivity wire coilings；The superconduction transition wire (18) is served as reasons
The superconduction wire long that BSCCO or YBCO superconductivity wires are constituted；The top of the superconduction binary current lead (16) is by copper or aluminium
What wire was constituted often leads wire long, and the bottom of the superconduction binary current lead (16) is by BSCCO or YBCO superconductivity wire structures
Into superconduction wire long.
3. superconduction according to claim 1 with often lead compound flat ripple current-limiting reactor, it is characterised in that：
It is described often to lead switch combination (25) and be made up of power electronic switching or mechanical switch；Superconducting switch combination (6) is by four
Block BSCCO or YBCO superconduction patty bulk and a BSCCO or YBCO superconducting cylinder shapes bar are constituted；Four pieces of superconduction patties
Bulk is placed in parallel successively with superconducting cylinder shape bar, and by between adjacent superconduction patty bulk, superconduction patty bulk
Contacting with each other between superconducting cylinder shape bar separates and forms corresponding superconducting switch.
4. superconduction according to claim 3 with often lead compound flat ripple current-limiting reactor, it is characterised in that：
Four pieces of BSCCO or YBCO superconduction patties bulks include superconduction patty bulk A, superconduction patty bulk B, superconduction cake
Shape bulk C and superconduction patty bulk D；The superconduction patty bulk A is connected together to one and surpasses with superconducting cylinder shape bar
Switch contact is led, the superconduction patty bulk B and superconduction patty bulk D is connected together to a superconducting switch contact, institute
Superconduction patty bulk C is stated separately as a superconducting switch contact；The superconduction patty bulk A and superconduction patty bulk
B constitutes the without hindrance switch of the second superconduction (9), and the superconduction patty bulk C and superconduction patty bulk D constitutes described
The without hindrance switch of first superconduction (8), the superconduction patty bulk D constitutes the superconducting current-limiting switch with superconducting cylinder shape bar
(10)。
5. superconduction according to claim 1 with often lead compound flat ripple current-limiting reactor, it is characterised in that：
The positive coiling often leads inductance coil (19) and oppositely wound normal lead inductance coil (20) and often led by copper or aluminium
Line coiling is formed；Often wire is the nesting by two " L " shape wires with equal length after insulation processing for the copper or aluminium
The length-width ratio for turning into is 3：2 parallel combination type often leads wire long；The parallel combination type often leads one of end of wire long
After portion welds together, then be wound on a bobbin, with formed be connected in series and the connected positive coiling of Same Name of Ends it is normal
Lead inductance coil (19) and oppositely wound often lead inductance coil (20)；Described first often leads transition wire (32) and second often leads
Transition wire (33) be by copper or aluminium often wire constitute often lead wire long.
6. the superconduction according to any one of claim 1 to 5 with often lead compound flat ripple current-limiting reactor, it is characterised in that：
The superconduction inductance coil (1) often leads inductance coil (19) and oppositely wound normal conduction installed in the positive coiling
The centre position of the inner chamber of sense coil (20), the magnetic field for often leading inductance coil (19) generation of the positive coiling is used as described super
The background magnetic field of inductance coil (1) is led, so as to increase the critical current of superconduction inductance coil (1), superconduction inductor wire is reduced
Enclose the resistance value of (1).
7. the superconduction according to any one of claim 1 to 5 with often lead compound flat ripple current-limiting reactor, it is characterised in that：
The centre position of inner chamber of superconducting switch combination (6) installed in superconduction inductance coil (1), superconduction inductance coil (1)
The magnetic field of generation superconducts as the background magnetic field of superconducting current-limiting switch (10) in superconducting switch combination (6) so as to reduce
The critical current of sense coil (1), increases the resistance value of superconduction inductance coil (1).
8. the superconduction according to any one of claim 1 to 5 and the control method for often leading compound flat ripple current-limiting reactor, its
It is characterised by, (6) and the normal conducting state for leading switch combination (25) is combined by switching the superconducting switch, realizes superconduction inductance
Coil (1), superconducting switch combination (6), the inductance coil (19) of often leading of positive coiling often lead inductance coil with oppositely wound
(20) type of attachment between, including following several situations：
When direct current network voltage pulsation is less than default voltage pulsation threshold value, the without hindrance switch of the first superconduction (8) disconnects, institute
The without hindrance switch of the second superconduction (9) closure is stated, superconducting current-limiting switch (10) disconnects, first often leads switch (29) closure, second
Switch (30) disconnection is often led, the 3rd often leads switch (31) closure, and now, the superconduction inductance coil (1) accesses to direct current network,
For the flat ripple treatment of line voltage；
When direct current network voltage pulsation is more than or equal to default voltage pulsation threshold value, the without hindrance switch of the first superconduction (8)
Disconnect, the without hindrance switch of the second superconduction (9) closure, superconducting current-limiting switch (10) disconnects, first often leads switch (29) closes
Close, second often lead switch (30) closure, the 3rd often lead switch (31) disconnect, now, the superconduction inductance coil (1) with connect and
The connected positive coiling in different name end often leading inductance coil (19) accesses to direct current network, for the flat ripple treatment of line voltage；
When direct current network fault current is less than default Fisrt fault current threshold, the without hindrance switch of the first superconduction (8) is broken
Open, the without hindrance switch of the second superconduction (9) closure, superconducting current-limiting switch (10) disconnects, first often leads switch (29) closure, and second often leads
Switch (30) disconnects, and the 3rd often leads switch (31) closure, and now, the superconduction inductance coil (1) accesses to direct current network, is used for
The current limliting treatment of electric network fault electric current；
When direct current network fault current is more than or equal to default Fisrt fault current threshold, and less than default second failure electricity
During stream threshold value, the without hindrance switch of the first superconduction (8) disconnects, and the without hindrance switch of the second superconduction (9) disconnects, the superconducting current-limiting
Switch (10) closure, first often leads switch (29) closure, and second often leads switch (30) disconnection, and the 3rd often leads switch (31) closure,
Now, the superconduction inductance coil (1) accesses to direct current network with superconducting current-limiting switch (10) connected, for electric network fault electricity
The current limliting treatment of stream；
When direct current network fault current is more than or equal to default second failure current thresholds, the without hindrance switch of the first superconduction
(8) disconnect, the without hindrance switch of the second superconduction (9) disconnects, superconducting current-limiting switch (10) closure, first often leads switch (29) disconnection, the
Two often lead switch (30) closure, and the 3rd often leads switch (31) disconnection, and now, the superconduction inductance coil (1) is opened with superconducting current-limiting
Close (10), by positive coiling often lead inductance coil (19) with it is oppositely wound often lead that inductance coil (20) constitutes often lead it is noninductive
After coil series connection, then direct current network is accessed to, for the current limliting treatment of line voltage；
When direct current network fault current duration is more than or equal to default duration threshold, or the cooled cryostat
(11) when internal low-temperature refrigerant temperature is more than or equal to default temperature threshold, the without hindrance switch of the first superconduction (8) is closed
Close, the without hindrance switch of the second superconduction (9) closure, superconducting current-limiting switch (10) disconnects, first often leads switch (29) disconnection,
Second often leads switch (30) closure, and the 3rd often leads switch (31) disconnection, now, by positive coiling it is normal lead inductance coil (19) and
It is oppositely wound often lead inductance coil (20) composition often leading noninductive coil accesses to direct current network, for the current limliting of line voltage
Treatment；The superconduction inductance coil (1) is processed by the without hindrance switch of the first superconduction (8) short circuit, it is to avoid low-temperature refrigerant temperature mistake
The potential safety hazard that heat is caused.
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