CN104134980B - A kind of H bridges superconduction resistance sense type current limiter - Google Patents
A kind of H bridges superconduction resistance sense type current limiter Download PDFInfo
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- CN104134980B CN104134980B CN201410344584.4A CN201410344584A CN104134980B CN 104134980 B CN104134980 B CN 104134980B CN 201410344584 A CN201410344584 A CN 201410344584A CN 104134980 B CN104134980 B CN 104134980B
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Abstract
A kind of H bridges superconduction resistance sense type current limiter, is made up of one or more H bridges superconduction resistance sense type current limiter block coupled in series or parallel connection or connection in series-parallel.Each H bridges superconduction resistance sense type current limiter module is made up of 4 superconduction resistance sense current limiting unit connection in series-parallel, and 4 current limiter units are separately mounted on 4 bridge arms of H bridges, and current transformer is arranged on the connection center line of H bridges.4 current limiting units include L11 posts interior loop and exterior loop, L12 posts interior loop and exterior loop, L21 posts interior loop and exterior loop, L22 posts interior loop and exterior loop, L31 posts interior loop and exterior loop, L32 posts interior loop and exterior loop, L41 posts interior loop and exterior loop, L42 posts interior loop and exterior loop, each post inner-outer coil number of turn is identical, around to opposite.When some superconduction resistance sense current limiting unit of H bridge arms breaks down, the electric current of center line is connect by transformer detection H bridgings, realizes the Fault diagnosing and protecting to superconduction resistance sense type current limiter.
Description
Technical field
The present invention relates to a kind of H bridge superconduction resistance sense type current limiters applied to short trouble current limliting.
Background technology
With the rapid development of the national economy, society is continuously increased to the demand of electric power, the continuous of power system has been driven
Development, single-machine capacity and station capacity, substation capacity, city and center of industry load are continuously increased, and allow for power train
Interconnected between system, the short circuit current level in power networks at different levels improves constantly.Nevertheless, in general way is still using open circuit
Device cut-offs to faulty line, on the one hand protect power equipment, on the other hand also avoid due to busbar voltage is too low and to
Family adversely affects.With the continuous improvement of short circuit current level, it is necessary to improve constantly the Breaking capacity of breaker.So
And the Breaking capacity of breaker is further improved, and it is not only technically more and more difficult, and cost also will be carried significantly
It is high.In addition, breaker can not be directly used in parallel.Therefore, the Breaking capacity deficiency of electric network fault short circuit current is increasingly
As the important bottleneck problem of limitation power network development.
In view of the Breaking capacity deficiency of breaker, in recent years, the method for a variety of limitation grid short circuit electric currents is also begun to
It is concerned and applies.The method of limitation grid short circuit electric current mainly has：(1) line voltage is improved；(2) power network connection, bag are untied
Include the connection between some transmission lines of electricity of disconnection or double-bus.When there is short trouble, back-up breaker can be closed and ensure confession
Electricity；(3) short-circuit of power transformer impedance is improved；(4) current-limiting reactor is installed；(5) fault current limiter is installed.However, carry
The cost of high line voltage grade is too high；The method for untiing power network connection, can cause the power supply reliability of power network to substantially reduce；Adopt
It is that current limiting short-circuit current is also simply most most ripe scheme, but need to increase and be with high-impedance transformer or current-limiting reactor
Unite idle and be unfavorable for Power Network Transient Stability.The shortcomings that in order to eliminate current-limiting reactor, it can use and failure electricity is installed in power network
This solution of stream limiter.Fault current limiter impedance very little under normal operation, in short trouble impedance become big
And current limliting.The fault current limiter technology of current comparative maturity mainly has series connection current-limiting reactor, series resonance-type fault current limit
Device processed, controlled series compensation fault current limiter etc., and the fault current limiter technology in conceptual phase mainly applies new material
The current limiting technique of realization, including superconductive current limiter, PTC thermistor current limiter and solid-state current limiter.
In current superconductive current limiter technology, superconduction resistance-type current restrictor has obtained very big concern.Normally transported in system
During row, no resistance state is presented in superconduction resistance-type current restrictor, does not have any influence on power network, when failure occurs, high-temperature superconductor
Body quenches and high resistance state is presented and carries out current limliting.Superconduction resistance-type current restrictor typically utilizes single or more when making
Superconductive tape is fabricated to noninductive disk-type winding module, and then multiple noninductive disk-type winding modules form current limiter by connection in series-parallel.By
Text (Development of resistive fault current limiters based on YBCO coated
conductors,IEEE Transactions on Applied Superconductivity,vol.19,no.3,
Pp.1950-1955 the eight-trigram type structure fabrication superconduction noninductive resistance of convolution in the middle part of single conductor, Chinese invention patent) are employed
201210057470.2 employ two-conductor line makes superconduction noninductive resistance with around end welded structure.Cake formula structural-superconducting hinders
The shortcomings that type current limiter is that single cake port voltage is high, and therefore, it is difficult to be fabricated to large flat bread, it is necessary to which the series connection of multiple little cakes can be just configured to
High-tension current limiter can be born, so as to add joint quantity.Superconduction resistance-type current restrictor is also configured to cylinder mode,
Paper (An analysis and short circuit test of various types of Bi-2223 bifilar
winding fault current limiting module,IEEE Transactions on Applied
Superconductivity, 2006, vol.16, no.2, pp.703-706) using biobelt, radially lap wound mode constructs circle
Cartridge type noninductive resistance coil, Chinese invention patent 201210057511.8 vertically and construct drum type brake using biobelt around mode
Noninductive resistance coil.But it is radial and axial and around drum type brake noninductive coil the problems such as port voltage is too high be present, it is difficult to
Make big cylinder.Current superconduction resistance-type current restrictor, current limiting unit connection in series-parallel that the multiple superconductions of generally use are noninductive construction, is mainly deposited
In problems with：(1) uniformity and the joint electricity of the electric current of the noninductive current limiting unit of superconduction and voltage distribution dependent on superconducting tape
The size of resistance, many uncontrollable factors be present, add the technical difficulty that large-scale superconductive current limiter makes；(2) superconduction in parallel without
Lack internal fault suppression mechanism between sense current limiting unit, if the noninductive current limiting unit of a superconduction breaks down, it will occur
Chain reaction, whole parallel component is caused to destroy.(3) the superconducting current-limiting component being made up of the noninductive current limiting unit of multiple superconductions lacks
Related Fault diagnosing and protecting method, superconduction is noninductive, and current limiting unit failure is difficult to detect at low ambient temperatures, to each
The electric current of superconducting current-limiting coil unit detected there is also many technologies and economically the problem of.Chinese invention patent
200710168717.7 propose a kind of noninductive coupling shunt inductance current-limiting device, but do not provide specific loop construction and connect
Line mode, also without analyzing, multigroup coil is series-parallel to press equal stream mechanism and related Fault diagnosing and protecting method, China
More column combination superconduction resistance sense type current limiters that patent of invention 201410116959.1 uses, although superconducting current-limiting unit can be solved
Pressure flow and suppress problem with internal fault, and can be diagnosed offline, but do not consider large-scale superconductive current limiter
Construction problem and corresponding on-line fault diagnosis and guard method.
It is existing using noninductive coil current limiting unit construction high tc superconducting fault current limiter exist press flow it is equal to superconducting tape
Even property dependence is too high, lacks the Fault diagnosing and protecting method of failure restraint mechanism and correlation, existing more column combination superconductions
Resistance sense type current limiter is difficult to on-line fault diagnosis and protection when making large-scale superconductive current limiter, exists during application many hidden
Suffer from.
The content of the invention
The purpose of the present invention is to overcome existing high tc superconducting fault current limiter to press to flow to superconducting tape uniformity dependence mistake
The shortcomings that Fault diagnosing and protecting method of high, shortage failure restraint mechanism and correlation, propose a kind of H bridges superconduction resistance sense type limit
Flow device and method for diagnosing faults.The present invention uses the resistance and the common current limliting of leakage inductance of superconducting coil, in stable state, the electricity of current limiter
Resistance is zero, inductance very little, in sudden short circuit, the leakage inductance of superconducting current-limiting unit can fault current limiting climbing speed, simultaneously
Superconducting coil quickly quenches, resistance increase, further fault current limiting.According to line parameter circuit value and the needs of current limit, surpass
The resistance and leakage inductance for leading resistance sense current limiting unit can flexible designs.
To achieve these goals, H bridges superconduction resistance sense type current limiter of the present invention uses following technical scheme：
Superconduction resistance sense type current limiter is by one or more H bridges superconduction resistance sense type current limiter block coupled in series or parallel connection or connection in series-parallel
Composition.Each H bridges superconduction resistance sense type current limiter module is made up of 4 superconduction resistance sense current limiting unit connection in series-parallel, 4 superconduction resistance senses
Current limiting unit is separately mounted on 4 bridge arms of H bridges.Current transformer is arranged on the connection center line of H bridges.H bridge superconduction resistance senses
Type current limiter module and current transformer are installed in inside cooled cryostat.
The first superconduction resistance sense current limiting unit of H bridge superconduction resistance sense type current limiter modules is formed by L11 posts interior loop and outside line
Circle, L12 posts interior loop and exterior loop composition；Second superconduction resistance sense current limiting unit is by L21 posts interior loop and exterior loop, L22 posts
Coil and exterior loop composition；3rd superconduction resistance sense current limiting unit RL3 is by L31 posts interior loop and exterior loop, L32 posts interior loop and outer
Coil forms；4th superconduction resistance sense current limiting unit is made up of L41 posts interior loop and exterior loop, L42 posts interior loop and exterior loop.
L11 posts interior loop and L12 post exterior loops are connected in series, and L12 posts interior loop and L11 post exterior loops are connected in series, and formation the first surpasses
Lead two branch roads of resistance sense current limiting unit；L21 posts interior loop and L22 post exterior loops are connected in series, L22 posts interior loop and L21 posts
Exterior loop is connected in series, and forms two branch roads of the second superconduction resistance sense current limiting unit；L31 posts interior loop and L32 post exterior loop strings
Connection connection, L32 posts interior loop and L31 post exterior loops are connected in series, and form two branch roads of the 3rd superconduction resistance sense current limiting unit；
L41 posts interior loop and L42 post exterior loops are connected in series, and L42 posts interior loop and L41 post exterior loops are connected in series, and are formed the and four are surpassed
Lead two branch roads of resistance sense current limiting unit.The interior loop of each post is identical with the exterior loop number of turn, around to opposite.L11 post coils connect
Line terminals are respectively interior loop input, interior loop output end, exterior loop input and exterior loop output end, the input of interior loop
Terminal and lead-out terminal are located at the both sides up and down of interior loop respectively, and the input terminal and lead-out terminal of exterior loop are located at outside line respectively
The both sides up and down of circle.The binding post of L12 post coils is respectively interior loop input, interior loop output end, exterior loop input
With exterior loop output end, the input terminal and lead-out terminal of interior loop are located at the both sides up and down of interior loop respectively, exterior loop it is defeated
Enter the both sides up and down that terminal and lead-out terminal are located at exterior loop respectively.The binding post of L21 post coils is respectively interior loop input
End, interior loop output end, exterior loop input and exterior loop output end, the input terminal and lead-out terminal of interior loop are located at respectively
The both sides up and down of interior loop, the input terminal and lead-out terminal of exterior loop are located at the both sides up and down of exterior loop respectively.L22 post coils
Binding post be respectively interior loop input, interior loop output end, exterior loop input and exterior loop output end, interior loop
Input terminal and lead-out terminal are located at the both sides up and down of interior loop respectively, and the input terminal and lead-out terminal of exterior loop are located at respectively
The both sides up and down of exterior loop.The binding post of L31 post coils is respectively interior loop input, and interior loop output end, exterior loop are defeated
Enter end and exterior loop output end, the input terminal and lead-out terminal of interior loop are located at the both sides up and down of interior loop, exterior loop respectively
Input terminal and lead-out terminal respectively be located at exterior loop both sides up and down；The binding post of L32 post coils is respectively interior loop
Input, interior loop output end, exterior loop input and exterior loop output end, input terminal and the lead-out terminal difference of interior loop
Positioned at the both sides up and down of interior loop, the input terminal and lead-out terminal of exterior loop are located at the both sides up and down of exterior loop respectively.
First superconduction resistance sense current limiting unit uses following connected mode：The interior loop input of L11 posts, the interior lines of L12 posts
Enclose input short circuit, as the input of the first superconduction resistance sense current limiting unit, the interior loop output ends of L11 posts and L12 posts it is outer
Coil input end connects, and the interior loop output end of L12 posts connects with the exterior loop input of L11 posts, the exterior loop output of L11 posts
End, the exterior loop output end short circuit of L12 posts, the output end as the first superconduction resistance sense current limiting unit.Second superconduction resistance sense current limliting
Unit uses following connected mode：The interior loop input of L21 posts, the interior loop input short circuit of L22 posts, as the second superconduction
The input of resistance sense current limiting unit, the interior loop output end of L21 posts connect with the exterior loop input of L22 posts, the interior lines of L22 posts
Circle output end connects with the exterior loop input of L21 posts, and the exterior loop output end of L21 posts, the exterior loop output end of L22 posts are short
Connect, the output end as the second superconduction resistance sense current limiting unit.The 3rd described superconduction resistance sense current limiting unit uses following connection side
Formula：The interior loop input of L31 posts, the interior loop input short circuit of L32 posts, the input as the 3rd superconduction resistance sense current limiting unit
End, the interior loop output end of L31 posts connects with the exterior loop input of L32 posts, the interior loop output ends of L32 posts and L31 posts
Exterior loop input connects, the exterior loop output end of L31 posts, the exterior loop output end short circuit of L32 posts, as the 3rd superconduction resistance sense
The output end of current limiting unit；The 4th described superconduction resistance sense current limiting unit uses following connected mode：The interior loop input of L41 posts
End, the interior loop input short circuit of L42 posts, as the input of the 4th superconduction resistance sense current limiting unit, the interior loop of L41 posts exports
End connects with the exterior loop input of L42 posts, and the interior loop output end of L42 posts connects with the exterior loop input of L41 posts, L41
The exterior loop output end of post, the exterior loop output end short circuit of L42 posts, the output end as the 4th superconduction resistance sense current limiting unit.
H bridge superconduction resistance sense type current limiter modules use following connected mode：The input of first superconduction resistance sense current limiting unit
It is connected with the input of the second superconduction resistance sense current limiting unit, as the input of H bridge superconduction resistance sense type current limiter modules, the 3rd
The output end of superconduction resistance sense current limiting unit is connected with the output end of the 4th superconduction resistance sense current limiting unit, as H bridge superconduction resistance senses
The output end of type current limiter module.The output end of first superconduction resistance sense current limiting unit and the input of the 3rd superconduction resistance sense current limiting unit
End is connected, and the output end of the second superconduction resistance sense current limiting unit is connected with the input of the 4th superconduction resistance sense current limiting unit, the
The input of three superconduction resistance sense current limiting units and the input of the 4th superconduction resistance sense current limiting unit are connected in the connection as H bridges
Line.When some superconduction resistance sense current limiting unit on H bridge arms breaks down, H bridgings can be detected by current transformer and connect center line
Electric current, so as to realize the Fault diagnosing and protecting to superconduction resistance sense type current limiter.
Superconduction resistance sense type current limiting unit uses the YBCO superconducting tape coilings of stainless steel base；Cooled cryostat Dewar is used
Stainless steel material with vacuum interlayer makes；Current transformer uses the low form Current Mutual Inductance of resistance to 77K and 77K temperature below
Device.
The present invention has following major advantage：
1) present invention can be used for the superconductive current limiter of construction Large Copacity.Using the string of multiple H bridge types superconductive current limiter modules
Connection and parallel connection, and evenly distributing for each branch current can be realized, so as to reduce the technical difficulty that large-scale superconductive current limiter makes
And cost, have more market competitiveness.
2) the superconduction resistance sense type current limiter that the present invention constructs, it is possible to achieve the real-time detection to each superconducting current-limiting unit,
When electric current increases suddenly in transformer, then it can be inferred that some superconducting cell of the H bridge superconducting current-limiting modules breaks down, surpass
It is out of service to lead current limiter needs, and is overhauled, prevents failure from further expanding.In addition, superconducting current-limiting device assembly of the present invention
There is chain reaction in the destruction that superconducting current-limiting unit in parallel is may also suppress from principle, and a branch road of superconducting current-limiting unit occurs
During failure, suppress electric current rising because perception is presented rapidly in another branch road, so as to shield the failure of the branch road.
Brief description of the drawings
Fig. 1 is the equivalent circuit diagram of the single H bridges superconduction resistance sense type current limiter of the specific embodiment of the invention 1；
Fig. 2 is the loop construction and mode of connection figure of the single H bridges superconduction resistance sense type current limiter of the specific embodiment of the invention 1；
Fig. 3 is the equivalent circuit diagram of the dual H-bridge parallel-connection structure superconduction resistance sense type current limiter of the specific embodiment of the invention 2；
Fig. 4 is the equivalent circuit diagram of the dual H-bridge cascaded structure superconduction resistance sense type current limiter of the specific embodiment of the invention 3.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
The present invention proposes the H bridge superconduction resistance sense type current limiters applied to current limiter field.
Fig. 1 show the equivalent circuit of the single H bridges superconduction resistance sense type current limiter of the specific embodiment of the invention 1.Such as Fig. 1 institutes
Show, superconduction resistance sense type current limiter is made up of a H bridge superconduction resistance sense type current limiter module.The H bridge superconduction resistance sense type current limiter moulds
Block is made up of 4 superconduction resistance sense current limiting unit RL1, RL2, RL3 and RL4 connection in series-parallel.4 superconduction resistance sense current limiting units are installed respectively
On 4 bridge arms of H bridges.Current transformer TA is arranged on the connection center line of H bridges.H bridges superconduction resistance sense type current limiter module and
Current transformer TA is installed in inside cooled cryostat Dewar.
The first superconduction resistance sense current limiting unit RL1 of H bridge superconduction resistance sense type current limiter modules is formed by L11 post interior loops
L11in and exterior loop L11out, L12 post interior loop L12in and exterior loop L12out composition；Second superconduction resistance sense current limiting unit
RL2 is made up of L21 post interior loop L21in and exterior loop L21out, L22 post interior loop L22in and exterior loop L22out；Three surpasses
Resistance sense current limiting unit RL3 is led by L31 post interior loop L31in and exterior loop L31out, L32 post interior loop L32in and exterior loop
L32out is formed；4th superconduction resistance sense current limiting unit is by L41 post interior loop L41in and exterior loop L41out, L42 post interior loop
L42in and exterior loop L42out compositions.L11 post interior loop L11in and L12 post exterior loops L12out is connected in series, L12 posts interior lines
Circle L12in and L11 post exterior loops L11out is connected in series, and forms two branch roads of the first superconduction resistance sense current limiting unit.In L21 posts
Coil L21in and L22 post exterior loop L22out is connected in series, L22 post interior loop L22in and L21 post exterior loops L21out series connection
Connection, form two branch roads of the second superconduction resistance sense current limiting unit.L31 post interior loop L31in and L32 post exterior loops L32out goes here and there
Connection connection, L32 post interior loop L32in and L31 post exterior loops L31out are connected in series, and form the 3rd superconduction resistance sense current limiting unit
Two branch roads.L41 post interior loop L41in and L42 post exterior loops L42out is connected in series, L42 post interior loop L42in and L41 posts
Exterior loop L41out is connected in series, and forms two branch roads of the 4th superconduction resistance sense current limiting unit；The interior loop and exterior loop of each post
The number of turn it is identical, around to opposite.
Fig. 2 show loop construction and the wiring side of the single H bridges superconduction resistance sense type current limiter of the specific embodiment of the invention 1
Formula.As shown in Fig. 2 the binding post of L11 post coils is respectively interior loop input L11a, interior loop output end L11b, outside line
Input L11c and exterior loop output end L11d is enclosed, the input terminal and lead-out terminal of interior loop are respectively positioned at the upper and lower of interior loop
Both sides, the input terminal and lead-out terminal of exterior loop are located at the both sides up and down of exterior loop respectively；The binding post of L12 post coils point
Not Wei interior loop input L12a, interior loop output end L12b, exterior loop input L12c and exterior loop output end L12d, interior lines
Enclose the both sides up and down that input terminal L12a and interior loop lead-out terminal L12b is located at interior loop respectively, the input terminal of exterior loop
L12c and exterior loop lead-out terminal L12d is located at the both sides up and down of exterior loop respectively；The binding post of L21 post coils is respectively interior
Coil input end L21a, interior loop output end L21b, exterior loop input L21c and exterior loop output end L21d, interior loop it is defeated
Enter terminal L21a and interior loop lead-out terminal L21b respectively be located at interior loop both sides up and down, the input terminal L21c of exterior loop and
Exterior loop lead-out terminal L21ad is located at the both sides up and down of exterior loop respectively；The binding post of L22 post coils is respectively that interior loop is defeated
Enter and hold L22a, interior loop output end L22b, exterior loop input L22c and exterior loop output end L22d, input terminal and output end
Son is located at the both sides up and down of coil respectively；The binding post of L31 post coils is respectively interior loop input L31a, and interior loop exports
Hold L31b, exterior loop input L31c and exterior loop output end L31d, the input terminal L22a and interior loop output end of interior loop
Sub- L22b is located at the both sides up and down of interior loop, input terminal L22c and exterior loop lead-out terminal L22d the difference position of exterior loop respectively
In the both sides up and down of exterior loop；The binding post of L32 post coils is respectively interior loop input L32a, interior loop output end
L32b, exterior loop input L32c and exterior loop output end L32d, the input terminal L32a and interior loop lead-out terminal of interior loop
L32b is located at the both sides up and down of interior loop respectively, and the input terminal L32c and exterior loop lead-out terminal L32d of exterior loop are located at respectively
The both sides up and down of exterior loop；The binding post of L41 post coils is respectively interior loop input L41a, interior loop output end L41b,
Exterior loop input L41c and exterior loop output end L41d, interior loop input terminal L41a and lead-out terminal L41b are respectively positioned at interior
The both sides up and down of coil, the input terminal L41c and lead-out terminal L41d of exterior loop are located at the both sides up and down of exterior loop respectively；L42
The binding post of post coil is respectively interior loop input L42a, interior loop output end L42b, exterior loop input L42c and outer
Coil output L42d, the input terminal L42a and interior loop lead-out terminal L42b of interior loop are respectively positioned at up and down the two of interior loop
Side, the input terminal L42c and lead-out terminal L42d of exterior loop are located at the both sides up and down of exterior loop respectively.
First superconduction resistance sense current limiting unit RL1 uses following connected mode：In L11 post interior loop input L11a, L12 posts
Coil input end L12a short circuits, the input as the first superconduction resistance sense current limiting unit RL1；L11 post interior loop output ends L11b
Being connected with L12 post exterior loop inputs L12c, L12 posts interior loop output end L12b connects with L11 post exterior loop inputs L11c,
L11 post exterior loop output end L11d, L12 post exterior loop output end L12d short circuits, as the first superconduction resistance sense current limiting unit RL1's
Output end.Second superconduction resistance sense current limiting unit RL2 uses following connected mode：In L21 post interior loop input L21a, L22 posts
Coil input end L22a short circuits, as the second superconduction resistance sense current limiting unit RL2 input, L21 post interior loop output ends L21b
Being connected with L22 post exterior loop inputs L22c, L22 posts interior loop output end L22b connects with L21 post exterior loop inputs L21c,
L21 post exterior loop output end L21d, L22 post exterior loop output end L22d short circuits, as the second superconduction resistance sense, current limiting unit RL2
Output end.The 3rd described superconduction resistance sense current limiting unit RL3 uses following connected mode：L31 post interior loop inputs L31a,
L32 post interior loop input L32a short circuits, as the 3rd superconduction resistance sense current limiting unit RL3 input, the output of L31 posts interior loop
End L31b with L32 post exterior loop inputs L32c is connected, L32 post interior loop output end L32b and L31 post exterior loop inputs
L31c connections, L31 post exterior loop output end L31d, L32 post exterior loop output end L32d short circuits, as the 3rd superconduction resistance sense current limliting
Unit R L3 output end.The 4th described superconduction resistance sense current limiting unit RL4 uses following connected mode：L41 posts interior loop inputs
L41a, L42 post interior loop input L42a short circuits are held, as the 4th superconduction resistance sense current limiting unit RL4 input, in L41 posts
Coil output L41b connects with L42 post exterior loop inputs L42c, L42 post interior loop output end L42b and L41 post exterior loops
Input L41c connections, L41 post exterior loop output end L41d, L42 post exterior loop output end L42d short circuits, hindered as the 4th superconduction
Feel current limiting unit RL4 output end.
H bridge superconduction resistance sense type current limiter modules use following connected mode：First superconduction resistance sense current limiting unit RL1 input
End is connected with the second superconduction resistance sense current limiting unit RL2 input, the input as H bridge superconduction resistance sense type current limiter modules
End, the 3rd superconduction resistance sense current limiting unit RL3 output end are connected with the 4th superconduction resistance sense current limiting unit RL4 output end, make
For the output end of H bridge superconduction resistance sense type current limiter modules.First superconduction resistance sense current limiting unit RL1 output end hinders with the 3rd superconduction
Sense current limiting unit RL3 input is connected, the second superconduction resistance sense current limiting unit RL2 output end and the 4th superconduction resistance sense current limliting
Unit R L4 input is connected, the 3rd superconduction resistance sense current limiting unit RL3 input and the 4th superconduction resistance sense current limiting unit
Input is connected the connection center line as H bridges.When some superconduction resistance sense current limiting unit on H bridge arms breaks down, it can pass through
Current transformer TA detections H bridgings connect the electric current of center line, so as to realize the malfunction monitoring to superconduction resistance sense type current limiter.
Fig. 3 show the equivalent circuit of the dual H-bridge parallel-connection structure superconduction resistance sense type current limiter of the specific embodiment of the invention 2.Such as
Shown in Fig. 3, superconduction resistance sense type current limiter is made up of two H bridge superconduction resistance sense type current limiter wired in parallel.First H bridge superconduction resistance senses
Type current limiter module is made up of 4 superconduction resistance sense current limiting unit RL1, RL2, RL3 and RL4 connection in series-parallel.4 superconduction resistance sense current limliting lists
Member is separately mounted on 4 bridge arms of H bridges, and the first current transformer TA1 is arranged on the first H bridge superconduction resistance sense type current limiter modules
On the connection center line of H bridges.First H bridges superconduction resistance sense type current limiter module and current transformer TA1 are installed in cooled cryostat
Inside Dewar.
The first superconduction resistance sense current limiting unit RL1 of the first H bridge superconduction resistance sense type current limiter modules is formed by L11 post interior loops
L11in and exterior loop L11out, L12 post interior loop L12in and exterior loop L12out composition；Second superconduction resistance sense current limiting unit
RL2 is made up of L21 post interior loop L21in and exterior loop L21out, L22 post interior loop L22in and exterior loop L22out；Three surpasses
Resistance sense current limiting unit RL3 is led by L31 post interior loop L31in and exterior loop L31out, L32 post interior loop L32in and exterior loop
L32out is formed；4th superconduction resistance sense current limiting unit is by L41 post interior loop L41in and exterior loop L41out, L42 post interior loop
L42in and exterior loop L42out compositions.L11 post interior loop L11in and L12 post exterior loops L12out is connected in series, L12 posts interior lines
Circle L12in and L11 post exterior loops L11out is connected in series, and forms two branch roads of the first superconduction resistance sense current limiting unit.In L21 posts
Coil L21in and L22 post exterior loop L22out is connected in series, L22 post interior loop L22in and L21 post exterior loops L21out series connection
Connection, form two branch roads of the second superconduction resistance sense current limiting unit.L31 post interior loop L31in and L32 post exterior loops L32out goes here and there
Connection connection, L32 post interior loop L32in and L31 post exterior loops L31out are connected in series, and form the 3rd superconduction resistance sense current limiting unit
Two branch roads.L41 post interior loop L41in and L42 post exterior loops L42out is connected in series, L42 post interior loop L42in and L41 posts
Exterior loop L41out is connected in series, and forms two branch roads of the 4th superconduction resistance sense current limiting unit.The interior loop and exterior loop of each post
The number of turn it is identical, around to opposite.
2nd H bridges superconduction resistance sense type current limiter module is gone here and there simultaneously by 4 superconduction resistance sense current limiting units RL5, RL6, RL7 and RL8
Connection is formed, and current limiting unit is separately mounted on 4 arms of H bridges, and the second current transformer TA2 is arranged on the 2nd H bridge superconduction resistance senses
On the connection center line of the H bridges of type current limiter module.2nd H bridges superconduction resistance sense type current limiter module and the second current transformer are also pacified
Inside cooled cryostat Dewar.Form the 5th superconduction resistance sense current limiting unit of the 2nd H bridge superconduction resistance sense type current limiter modules
RL5 is made up of L51 post interior loop L51in and exterior loop L51out, L52 post interior loop L52in and exterior loop L52out；Six surpasses
Resistance sense current limiting unit RL6 is led by L61 post interior loop L61in and exterior loop L61out, L62 post interior loop L62in and exterior loop
L62out is formed；7th superconduction resistance sense current limiting unit RL7 is by L71 post interior loop L71in and exterior loop L71out, L72 post interior lines
Enclose L72in and exterior loop L72out compositions；8th superconduction resistance sense current limiting unit is by L81 post interior loop L81in and exterior loop
L81out, L82 post interior loop L82in and exterior loop L82out are formed.L51 post interior loop L51in and L52 post exterior loops L52out
It is connected in series, L52 post interior loop L52in and L51 post exterior loops L51out is connected in series, and forms the 5th superconduction resistance sense current limiting unit
Two branch roads.L61 post interior loop L61in and L62 post exterior loops L62out is connected in series, L62 post interior loops L62in and L61
Post exterior loop L61out is connected in series, and forms two branch roads of the 6th superconduction resistance sense current limiting unit.L71 post interior loop L71in and
L72 post exterior loops L72out is connected in series, and L72 post interior loop L72in and L71 post exterior loops L71out is connected in series, and forms the
Two branch roads of seven superconduction resistance sense current limiting units.L81 post interior loop L81in and L82 post exterior loops L82out is connected in series, L82
Post interior loop L82in and L81 post exterior loop L81out is connected in series, and forms two branch roads of the 8th superconduction resistance sense current limiting unit.
The interior loop of each post is identical with the number of turn of exterior loop, around to opposite.
First H bridges superconduction resistance sense type current limiter module connects with the 2nd H bridge superconduction resistance sense type current limiter wired in parallel.First
When some superconduction resistance sense current limiting unit on H bridge arms breaks down, the first H bridgings can be detected by the first current transformer TA1
The electric current of center line is connect, so as to realize the malfunction monitoring to the H bridge superconduction resistance sense type current limiter modules.Some on 2nd H bridge arms
When superconduction resistance sense current limiting unit breaks down, the electric current that the 2nd H bridgings connect center line can be detected by the second current transformer TA2,
So as to realize the malfunction monitoring to the H bridge superconduction resistance sense type current limiter modules.
Fig. 4 show the equivalent circuit of the dual H-bridge cascaded structure superconduction resistance sense type current limiter of the specific embodiment of the invention 3.Such as
Shown in Fig. 4, superconduction resistance sense type current limiter is made up of two H bridge superconduction resistance sense type current limiter block coupled in series.It is same as Example 2,
First H bridges superconduction resistance sense type current limiter module is made up of 4 superconduction resistance sense current limiting unit RL1, RL2, RL3 and RL4 connection in series-parallel, and 4
Individual superconduction resistance sense current limiting unit is separately mounted on 4 bridge arms of H bridges, and the first current transformer TA1 is arranged on the first H bridge superconductions
On the connection center line of the H bridges of resistance sense type current limiter module.2nd H bridge superconduction resistance sense type current limiter modules are limited by 4 superconduction resistance senses
Unit R L5, RL6, RL7 and RL8 connection in series-parallel is flowed to form, 4 superconduction resistance sense current limiting units are separately mounted on 4 bridge arms of H bridges,
Second current transformer TA2 is arranged on the connection center line of the H bridges of the 2nd H bridge superconduction resistance sense type current limiter modules.The superconduction of H bridges hinders
Sense type current limiter module and current transformer are installed in inside cooled cryostat Dewar.First H bridge superconduction resistance sense type current limiter moulds
Block and the connection of the 2nd H bridge superconduction resistance sense type current limiters block coupled in series.Some superconduction resistance sense current limiting unit on first H bridge arms occurs
During failure, the electric current that the first H bridgings connect center line can be detected by the first current transformer TA1, the H bridges superconduction is hindered so as to realize
The malfunction monitoring of sense type current limiter module., can be by the when some superconduction resistance sense current limiting unit on 2nd H bridge arms breaks down
Two current transformer TA2 detect the electric current that the 2nd H bridgings connect center line, so as to realize to the H bridge superconduction resistance sense type current limiter modules
Malfunction monitoring.
Although three embodiments discuss the superconduction resistance sense type of single H bridge types, dual H-bridge parallel connection type and dual H-bridge tandem type
Current limiter, it should be appreciated that the superconduction resistance sense type current limiter that the present invention refers to is not limited to situation described in embodiment, thus is not carrying on the back
Under principle from the technical principle of the present invention, various changes and deformation can be made.H bridge modules as referred in above example can
More series connection group numbers and group number in parallel is used to realize the connection in series-parallel of more superconductive tapes.In addition, exterior loop and the interior lines of each post
Circle can also use multi-layer cylindrical structure, and interlayer leaves heat dissipation channel.
Claims (6)
1. a kind of H bridges superconduction resistance sense type current limiter, it is characterised in that described H bridge superconduction resistance sense type current limiters are by one or more
Individual H bridges superconduction resistance sense type current limiter block coupled in series or parallel connection or connection in series-parallel composition；One H bridges superconduction resistance sense type current limiter module by
4 superconduction resistance sense current limiting unit (RL1, RL2, RL3 and RL4) connection in series-parallel are formed, and 4 superconduction resistance sense current limiting units are separately mounted to
On 4 bridge arms of H bridges, current transformer (TA) is arranged on the connection center line of H bridges；H bridges superconduction resistance sense type current limiter module and
It is internal that current transformer is installed in cooled cryostat (Dewar)；4 superconduction resistance sense current limiting units installed in H bridge arms use
The structure of interior loop and exterior loop suit, interior loop is identical with the number of turn of exterior loop, around to opposite.
2. H bridges superconduction resistance sense type current limiter according to claim 1, it is characterised in that form the H bridges superconduction resistance sense type
First superconduction resistance sense current limiting unit (RL1) of current limiter module is by L11 posts interior loop (L11in) and exterior loop (L11out), L12
Post interior loop (L12in) and exterior loop (L12out) composition；Second superconduction resistance sense current limiting unit (RL2) is by L21 post interior loops
(L21in) formed with exterior loop (L21out), L22 posts interior loop (L22in) and exterior loop (L22out)；3rd superconduction resistance sense limits
Unit (RL3) is flowed by L31 posts interior loop (L31in) and exterior loop (L31out), L32 posts interior loop (L32in) and exterior loop
(L32out) form；4th superconduction resistance sense current limiting unit is by L41 posts interior loop (L41in) and exterior loop (L41out), L42 posts
Coil (L42in) and exterior loop (L42out) composition；L11 posts interior loop (L11in) and L12 posts exterior loop (L12out) series connection connect
Connect, L12 posts interior loop (L12in) and L11 posts exterior loop (L11out) are connected in series, and form the first superconduction resistance sense current limiting unit
Two branch roads；L21 posts interior loop (L21in) and L22 posts exterior loop (L22out) are connected in series, L22 posts interior loop (L22in) and
L21 posts exterior loop (L21out) is connected in series, and forms two branch roads of the second superconduction resistance sense current limiting unit；L31 post interior loops
(L31in) it is connected in series with L32 posts exterior loop (L32out), L32 posts interior loop (L32in) and L31 posts exterior loop (L31out)
It is connected in series, forms two branch roads of the 3rd superconduction resistance sense current limiting unit；L41 posts interior loop (L41in) and L42 post exterior loops
(L42out) it is connected in series, L42 posts interior loop (L42in) and L41 posts exterior loop (L41out) are connected in series, and form the 4th superconduction
Two branch roads of resistance sense current limiting unit；The interior loop of each post is identical with the number of turn of exterior loop, around to opposite；L11 post coils connect
Line terminals are respectively interior loop input (L11a), interior loop output end (L11b), exterior loop input (L11c) and exterior loop
Output end (L11d), the input terminal (L11a) and interior loop lead-out terminal (L11b) of interior loop are respectively positioned at the upper and lower of interior loop
Both sides, the input terminal (L11c) and exterior loop lead-out terminal (L11d) of exterior loop are located at the both sides up and down of exterior loop respectively；L12
The binding post of post coil is respectively interior loop input (L12a), interior loop output end (L12b), exterior loop input
(L12c) distinguish with exterior loop output end (L12d), the input terminal (L12a) of interior loop and the lead-out terminal (L12b) of interior loop
Positioned at the both sides up and down of interior loop, the input terminal (L12c) and exterior loop lead-out terminal (L12d) of exterior loop are located at outside line respectively
The both sides up and down of circle；The binding post of L21 post coils is respectively interior loop input (L21a), interior loop output end (L21b),
The lead-out terminal difference position of exterior loop input (L21c) and exterior loop output end (L21d), interior loop input terminal and interior loop
In the both sides up and down of interior loop, the input terminal (L21c) and exterior loop lead-out terminal (L21d) of exterior loop are located at exterior loop respectively
Both sides up and down；The binding post of L22 post coils is respectively interior loop input (L22a), interior loop output end (L22b), outer
Coil input end (L22c) and exterior loop output end (L22d), the input terminal (L22a) and interior loop lead-out terminal of interior loop
(L22b) it is located at the both sides up and down of interior loop, the input terminal and exterior loop lead-out terminal (L22d) point of exterior loop (L22c) respectively
Not Wei Yu exterior loop both sides up and down；The binding post of L31 post coils is respectively interior loop input (L31a), and interior loop exports
Hold (L31b), exterior loop input (L31c) and exterior loop output end (L31d), interior loop input terminal (L31a) and interior loop
Lead-out terminal (L31b) is located at the both sides up and down of interior loop, the input terminal (L31c) and exterior loop lead-out terminal of exterior loop respectively
(L31d) it is located at the both sides up and down of exterior loop respectively；The binding post of L32 post coils is respectively interior loop input (L32a), interior
Coil output (L32b), exterior loop input (L32c) and exterior loop output end (L32d), the input terminal of interior loop
(L32a) and interior loop lead-out terminal (L32b) respectively be located at interior loop both sides up and down, the input terminal (L32c) of exterior loop and
Exterior loop lead-out terminal (L32d) is located at the both sides up and down of exterior loop respectively；The binding post of L41 post coils is respectively interior loop
Input (L41a), interior loop output end (L41b), exterior loop input (L41c) and exterior loop output end (L41d), interior loop
Input terminal (L41a) and interior loop lead-out terminal (L41b) are located at the both sides up and down of interior loop, the input terminal of exterior loop respectively
(L41c) and exterior loop lead-out terminal (L41d) is located at the both sides up and down of exterior loop respectively；The binding post difference of L42 post coils
For interior loop input (L42a), interior loop output end (L42b), exterior loop input (L42c) and exterior loop output end
(L42d), the input terminal (L42a) of interior loop and interior loop lead-out terminal (L42b) are located at the both sides up and down of interior loop respectively,
The input terminal (L42c) and exterior loop lead-out terminal (L42d) of exterior loop are located at the both sides up and down of exterior loop respectively.
3. H bridges superconduction resistance sense type current limiter according to claim 2, it is characterised in that described the first superconduction resistance sense limit
Flow unit (RL1) and use following connected mode：L11 post interior loop inputs (L11a), L12 post interior loop inputs (L12a) are short
Connect the input as the first superconduction resistance sense current limiting unit；L11 post interior loop output ends (L11b) and L12 post exterior loop inputs
(L12c) connect, L12 post interior loop output ends (L12b) and L11 post exterior loop inputs (L11c) connection, L11 post exterior loops are defeated
Go out the output end of end (L11d), L12 post exterior loop output end (L12d) short circuits as the first superconduction resistance sense current limiting unit；Described
Second superconduction resistance sense current limiting unit (RL2) uses following connected mode：L21 post interior loop inputs (L21a), L22 post interior loops
Input of input (L22a) short circuit as the second superconduction resistance sense current limiting unit, L21 post interior loop output ends (L21b) and L22
Post exterior loop input (L22c) connects, and L22 post interior loop output ends (L22b) and L21 post exterior loop inputs (L21c) are even
Connect, L21 post exterior loop output ends (L21d), L22 post exterior loop output end (L22d) short circuits are as the second superconduction resistance sense current limliting list
The output end of member；The 3rd described superconduction resistance sense current limiting unit (RL3) uses following connected mode：L31 post interior loop inputs
(L31a), input of L32 posts interior loop input (L32a) short circuit as the 3rd superconduction resistance sense current limiting unit, L31 posts interior lines
Enclose output end (L31b) and L32 post exterior loop inputs (L32c) connect, outside L32 post interior loop output ends (L32b) and L31 posts
Coil input end (L31c) connects, L31 post exterior loop output ends (L31d), L32 post exterior loop output end (L32d) short circuit conduct
The output end of 3rd superconduction resistance sense current limiting unit；The 4th described superconduction resistance sense current limiting unit (RL4) uses following connected mode：
L41 post interior loop inputs (L41a), L42 post interior loop input (L42a) short circuits are as the 4th superconduction resistance sense current limiting unit
Input, L41 post interior loop output ends (L41b) and L42 post exterior loop inputs (L42c) connection, L42 post interior loop output ends
(L42b) connected with L41 post exterior loop inputs (L41c), L41 post exterior loop output ends (L41d), L42 post exterior loop output ends
(L42d) output end of the short circuit as the 4th superconduction resistance sense current limiting unit.
4. H bridges superconduction resistance sense type current limiter according to claim 1, it is characterised in that described H bridge superconduction resistance senses type limit
Stream device module uses following connected mode：The input of first superconduction resistance sense current limiting unit (RL1) and the second superconduction resistance sense current limliting
The input of unit (RL2) is connected the input as H bridge superconduction resistance sense type current limiter modules, the 3rd superconduction resistance sense current limliting list
The output end of first (RL3) is connected with the output end of the 4th superconduction resistance sense current limiting unit (RL4) as H bridge superconduction resistance sense type current limlitings
The output end of device module, output end and the 3rd superconduction resistance sense current limiting unit (RL3) of the first superconduction resistance sense current limiting unit (RL1)
Input is connected, and the output end of the second superconduction resistance sense current limiting unit (RL2) is defeated with the 4th superconduction resistance sense current limiting unit (RL4)
Enter end to be connected, the input of the 3rd superconduction resistance sense current limiting unit (RL3) and the input phase of the 4th superconduction resistance sense current limiting unit
Connect the connection center line as H bridges.
5. H bridges superconduction resistance sense type current limiter according to claim 1, it is characterised in that described H bridge superconduction resistance senses type limit
When flowing some superconduction resistance sense current limiting unit failure on device H bridge arms, H bridgings are detected by current transformer (TA) and connect center line
Electric current, realize the Fault diagnosing and protecting to superconduction resistance sense type current limiter.
6. H bridges superconduction resistance sense type current limiter according to claim 1, it is characterised in that described superconduction resistance sense type current limliting list
Member uses the YBCO superconducting tape coilings of stainless steel base；Described cooled cryostat (Dewar) is used with vacuum interlayer not
The Steel material that becomes rusty makes；Described current transformer uses the low form transformer of resistance to 77K temperature.
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| CN111525501B (en) * | 2020-05-28 | 2022-05-27 | 中国科学院电工研究所 | Modularized high-capacity current-limiting circuit breaker |
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| CN2650370Y (en) * | 2003-09-22 | 2004-10-20 | 新疆特变电工股份有限公司 | Failure current-limiter with multi parallel current-limitnig inductance |
| CN1619913A (en) * | 2003-09-30 | 2005-05-25 | Lg产电株式会社 | Resistive superconducting fault current limiter |
| CN103368156A (en) * | 2013-08-05 | 2013-10-23 | 北京云电英纳超导电缆有限公司 | Modularized saturation iron core superconductive current limiter and control method thereof |
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| CN2650370Y (en) * | 2003-09-22 | 2004-10-20 | 新疆特变电工股份有限公司 | Failure current-limiter with multi parallel current-limitnig inductance |
| CN1619913A (en) * | 2003-09-30 | 2005-05-25 | Lg产电株式会社 | Resistive superconducting fault current limiter |
| CN103368156A (en) * | 2013-08-05 | 2013-10-23 | 北京云电英纳超导电缆有限公司 | Modularized saturation iron core superconductive current limiter and control method thereof |
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