CN107800123A - A kind of Main Insulation Structure of Electric apparatus and method of vertical high-temperature superconduction resistance-type current restrictor - Google Patents
A kind of Main Insulation Structure of Electric apparatus and method of vertical high-temperature superconduction resistance-type current restrictor Download PDFInfo
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- CN107800123A CN107800123A CN201711117409.1A CN201711117409A CN107800123A CN 107800123 A CN107800123 A CN 107800123A CN 201711117409 A CN201711117409 A CN 201711117409A CN 107800123 A CN107800123 A CN 107800123A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
- H02H9/023—Current limitation using superconducting elements
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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 embodiments of the invention provide a kind of Main Insulation Structure of Electric apparatus and method of vertical high-temperature superconduction resistance-type current restrictor.The device includes：Outgoing line unit, superconduction resistance current limiting unit, low-temperature (low temperature) vessel, paper insulation and liquid nitrogen, two outgoing line units in center and connection that superconduction resistance current limiting unit is placed in inside device are drawn to outside device, low-temperature (low temperature) vessel is cylindrical structure, paper insulation is cylindrical structure, paper insulated outside dimension is identical with the internal diameter of low-temperature (low temperature) vessel, paper insulation is placed in the inner side of low-temperature (low temperature) vessel, liquid nitrogen is placed between paper insulation and superconduction resistance current limiting unit, the composite insulation structure of liquid nitrogen and paper insulation composition, the operating voltage and surge voltage of high-temperature superconductor resistance-type current restrictor are born jointly.The embodiment of the present invention can reduce the monnolithic case size of Main Insulation Structure of Electric device on the premise of the resistance to pressure request of major insulation is met, the equipment for reducing superconductive current limiter takes up an area demand, and improves the effective rate of utilization of liquid nitrogen.
Description
Technical field
The present invention relates to fault current limiter technical field, more particularly to a kind of vertical high-temperature superconduction resistance-type current restrictor
Main Insulation Structure of Electric apparatus and method.
Background technology
Resistor-type high tc superconducting fault current limiter is a kind of superconducting state-normal state fast transition characteristic using high-temperature superconductor
The novel fault current limit equipment of work, has a fast response time, and normal operation loss is small, collection detection, triggering, current limliting and certainly
Dynamic function of recovering is the preferable current limiting technique of power system and device development program, had broad prospects in integral the features such as
With the huge market demand potential.
Resistive superconducting current limiter is limited using the superconduction resistance for the second generation hts band coiling commercially produced
Flow unit.Superconducting current-limiting unit is arranged in inside the low-temperature (low temperature) vessel equipped with liquid nitrogen.On the one hand liquid nitrogen is used as superconduction resistance current limliting list
The refrigeration working medium of member, to keep the superconducting state of superconductor；Major insulation of the another aspect liquid nitrogen also as superconductive current limiter, bears
The operating voltage and surge voltage of system.
Insulating structure design using liquid nitrogen as major insulation, in superconductive current limiter steady-state operation, performance is relatively stable.But
In superconductive current limiter current limliting transient process, failure of insulation risk be present.It is mainly reflected in：Fault current causes superconduction resistance to limit
Stream unit quenches, and current limiting unit absorbs the energy of a large amount of fault currents, and these energy pass in a short period of time to be superconducted
The liquid nitrogen around current limiting unit is hindered, causes liquid nitrogen vaporization, is finally discharged energy in the form of nitrogen.Because liquid nitrogen vaporization produces greatly
The nitrogen of amount so that liquid nitrogen major insulation is changed into gas-liquid two-phase insulation.The presence of bubble, electric field concentration of local will be caused, greatly
Improve the possibility of shelf depreciation.During bubble motion, there is also the possibility of even being aligned, this will provide logical for electric discharge
Road.
It is using a kind of method of liquid nitrogen progress main insulation design in the prior art：In order to ensure safety, according to nitrogen
Insulation standard is designed and leaves surplus.
It is above-mentioned to be using the shortcomings that liquid nitrogen progress main insulation design in the prior art：It is although this using worst case to set out
Being designed to of point meets insulating requirements, but because surplus is stayed very big, causes the Dewar size of resistive superconducting current limiter very
Greatly, the utilization rate of liquid nitrogen is relatively low.
The content of the invention
In order to solve the above-mentioned problems of the prior art, the embodiment provides a kind of vertical high-temperature to superconduct
The Main Insulation Structure of Electric apparatus and method of resistance type current limiter.
To achieve these goals, this invention takes following technical scheme：
According to an aspect of the present invention, there is provided a kind of Main Insulation Structure of Electric dress of vertical high-temperature superconduction resistance-type current restrictor
Put, it is characterised in that including：Outgoing line unit, superconduction resistance current limiting unit, low-temperature (low temperature) vessel, paper insulation and liquid nitrogen, it is described to superconduct
Two outgoing line units in center and connection that resistance current limiting unit is placed in inside device, the outgoing line unit draw to outside device
Go out, the paper insulation is placed in the inner side of the low-temperature (low temperature) vessel, and the liquid nitrogen is placed in the paper insulation and the superconduction resistance current limliting
Between unit, the composite insulation structure of the liquid nitrogen and paper insulation composition, high-temperature superconductor resistance-type current restrictor is born jointly
Operating voltage and surge voltage.
Preferably, the paper insulation carries out mechanical connection fixation with the low-temperature (low temperature) vessel, for preventing the paper insulation from existing
It is shifted in operation.
Preferably, the paper insulation is a kind of multilayer concentric structure being made up of isolit, and paper insulation is generally round
Tubular construction.
Preferably, the gap between isolit described in adjacent layer, carry out gluing as desired by impregnation method and fill out
Filling turns into an entity, or without filling retention gap.
Preferably, the paper insulated outside dimension is identical with the internal diameter of the low-temperature (low temperature) vessel.
Preferably, the isolit has good mechanical property at low temperature, have at room temperature it is good into
Shape characteristic；
The isolit selects cable paper, insulating board or PPLP.
Preferably, the low-temperature (low temperature) vessel is cylindrical structural, and the paper insulation is placed on the inside of the cylinder of the low-temperature (low temperature) vessel
Face, the nitrogen gas insulating distance of the cylinder top surface and bottom cylindrical face of the low-temperature (low temperature) vessel with the liquid nitrogen at a distance of sufficient surplus.
According to another aspect of the present invention, there is provided a kind of major insulation method of vertical high-temperature superconduction resistance-type current restrictor,
It is characterised in that it includes：
It is preforming to paper insulation progress, multi-concentric cylindrical structure is formed with the isolit coiling, is obtained
To the paper insulation of shaping；
According to the design parameter of composite insulation structure, the paper insulation is arranged on to the inside of the low-temperature (low temperature) vessel, it is described
Paper insulation is close to the cylinder medial surface of the low-temperature (low temperature) vessel, and in paper insulated inner side, filling liquid nitrogen obtains composite insulation structure；
The center that the superconduction resistance current limiting unit is placed in inside the composite insulation structure, utilizes compound inslation
Structure bears the operating voltage and surge voltage of the superconduction resistance current limiting unit jointly.
Preferably, the design parameter according to composite insulation structure, the paper insulation is held installed in the low temperature
The inside of device, the paper insulation are close to the cylinder medial surface of the low-temperature (low temperature) vessel, and in paper insulated inner side, filling liquid nitrogen is answered
Insulation system is closed, including：
The design parameter is that the partial pressure dielectric strength being subjected to by device determines that design parameter specifically includes：Institute
State paper insulated thickness dPaper, the space length d of the liquid nitrogenLiquid nitrogen；
Using the composite insulation structure, the liquid nitrogen and the paper insulation bear operating voltage and surge voltage jointly,
In steady operation, electric field relationship is：
EPaperdPaper+ELiquid nitrogendLiquid nitrogen=VMajor insulation voltage (1)
Drawn from above formula：
ELiquid nitrogendLiquid nitrogen=VMajor insulation voltage-EPaperdPaper (2)
In above-mentioned two formula, according to VMajor insulation voltageValue be calculated：The paper insulated thickness dPaperWith the sky of the liquid nitrogen
Between length dLiquid nitrogen, and by increasing the paper insulated thickness dPaper, reduce the magnitude of voltage that the liquid nitrogen must endure as.
Preferably, the operating voltage for bearing the superconduction resistance current limiting unit jointly using composite insulation structure and punching
Voltage is hit, including：
The major insulation electric field of the radial direction formed in device, the paper insulation and institute by the low-temperature (low temperature) vessel cylindrical side
Liquid nitrogen is stated to bear jointly；
The major insulation electric field of the cylinder top surface of the low-temperature (low temperature) vessel and bottom cylindrical face in device, is born by liquid nitrogen.
The embodiments of the invention provide a kind of vertical it can be seen from the technical scheme provided by embodiments of the invention described above
The Main Insulation Structure of Electric apparatus and method of high-temperature superconductor resistance-type current restrictor, can on the premise of the resistance to pressure request of major insulation is met
Reduce the block dimension of superconductive current limiter, the equipment for reducing superconductive current limiter takes up an area demand, improves the effective rate of utilization of liquid nitrogen.
The additional aspect of the present invention and advantage will be set forth in part in the description, and these will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Accompanying drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill of field, without having to pay creative labor, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of Main Insulation Structure of Electric device of vertical high-temperature superconduction resistance-type current restrictor provided in an embodiment of the present invention
Schematic diagram；
Fig. 2 is a kind of Main Insulation Structure of Electric device of vertical high-temperature superconduction resistance-type current restrictor provided in an embodiment of the present invention
Paper insulation structure composition schematic diagram；
Fig. 3 is a kind of making of the Main Insulation Structure of Electric of vertical high-temperature superconduction resistance-type current restrictor provided in an embodiment of the present invention
Method and step flow chart；
Wherein, 1- outgoing line units, 2- superconduction resistance current limiting units, 3- low-temperature (low temperature) vessels, 4- paper insulation, 5- liquid nitrogen, 41- paper are exhausted
Edge material, 42- paper insulation adjacent layer gaps.
Embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative " one " used herein, " one
It is individual ", " described " and "the" may also comprise plural form.It is to be further understood that what is used in the specification of the present invention arranges
Diction " comprising " refer to the feature, integer, step, operation, element and/or component be present, but it is not excluded that in the presence of or addition
One or more other features, integer, step, operation, element, component and/or their groups.It should be understood that when we claim member
Part is " connected " or during " coupled " to another element, and it can be directly connected or coupled to other elements, or there may also be
Intermediary element.In addition, " connection " used herein or " coupling " can include wireless connection or coupling.Wording used herein
"and/or" includes any cell of one or more associated list items and all combined.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology
Term and scientific terminology) with the general understanding identical meaning with the those of ordinary skill in art of the present invention.Should also
It should be appreciated that those terms defined in such as general dictionary should be understood that with the context of prior art
The consistent meaning of meaning, and unless defined as here, will not be explained with the implication of idealization or overly formal.
For ease of the understanding to the embodiment of the present invention, done further by taking several specific embodiments as an example below in conjunction with accompanying drawing
Explanation, and each embodiment does not form the restriction to the embodiment of the present invention.
Embodiment one
In order to which the block dimension of superconductive current limiter on the premise of the resistance to pressure request of major insulation is met, can be reduced, reduce super
The equipment for leading current limiter takes up an area demand, and the embodiment of the present invention devises a kind of major insulation of vertical high-temperature superconduction resistance-type current restrictor
Constructional device and method.The insulation system device that the embodiment of the present invention is proposed is a kind of composite construction, the insulation in the device
Structure includes liquid nitrogen and isolit, forms multilayer concentric structure using isolit and liquid nitrogen is compound, can bear jointly
The operating voltage and surge voltage of high-temperature superconductor resistance-type current restrictor, and it is necessary by increasing paper insulated thickness reduction liquid nitrogen institute
The magnitude of voltage born, so as to reduce the space length of liquid nitrogen so that the Main Insulation Structure of Electric device monnolithic case size reduces, and improves
The effective rate of utilization of liquid nitrogen.
A kind of structure of the Main Insulation Structure of Electric device of vertical high-temperature superconduction resistance-type current restrictor provided in an embodiment of the present invention
Schematic diagram is as shown in figure 1, the device includes：Outgoing line unit 1, superconduction resistance current limiting unit 2, low-temperature (low temperature) vessel 3, paper insulation 4 and liquid
Nitrogen 5, low-temperature (low temperature) vessel 3 are cylindrical structural, and paper insulation 4 is columnar structured, outside dimension and the low-temperature (low temperature) vessel 3 of paper insulation 4
Internal diameter is identical；The center that superconduction resistance current limiting unit 2 is placed in inside device, superconduction resistance current limiting unit 2 connect two and gone out
Line unit 1, two outgoing line units 1 are drawn to outside device, and paper insulation 4 is placed in the inner side of low-temperature (low temperature) vessel 3, and liquid nitrogen 5 is placed in paper insulation
Between 4 and superconduction resistance current limiting unit 2.
Device provided in an embodiment of the present invention is a kind of major insulation knot available for vertical high-temperature superconduction resistance-type current restrictor
Structure, the Main Insulation Structure of Electric are a kind of insulation systems compound by liquid nitrogen and paper progress.
The concrete composition structure of device provided in an embodiment of the present invention is as follows：
(1) paper insulation
Paper insulation is a kind of multilayer concentric structure being made up of isolit, and paper insulation is generally columnar structured.
A kind of paper of the Main Insulation Structure of Electric device of vertical high-temperature superconduction resistance-type current restrictor provided in an embodiment of the present invention is exhausted
Edge structure composition schematic diagram forms multilayer concentric as shown in Fig. 2 isolit is closely wound to given thickness in a spiral form
Structure, the given thickness are determined by the partial pressure dielectric strength designed；Have necessarily between the adjacent layer of multilayer concentric structure
Gap, according to the needs of actual conditions, the gap between isolated from adjacent material can carry out gluing by impregnating mode and fill out
Filling turns into an entity, can also be without filling retention gap.
Wherein, the condition that isolit needs to meet has：There is good mechanical property at low temperature, have at room temperature
There is good forming characteristic；Therefore, isolit can select cable paper, insulating board, PPLP (polypropylene layer platen) etc.
Material.
(2) composite insulation structure
Composite insulation structure includes：Paper insulation and liquid nitrogen, liquid nitrogen are placed in paper insulated inner side.
Composite insulation structure is preforming to paper insulation progress in outside according to design parameter first, and design parameter is by device
What the partial pressure dielectric strength of design determined, design parameter specifically includes：Paper insulated thickness dPaper, the space length d of liquid nitrogenLiquid nitrogen。
It is first to form multi-concentric cylindrical structure in outside coiling with isolit to obtain paper insulation to be carried out preforming
To the paper insulation of shaping, and paper insulated outside dimension is engaged with the internal diameter of low-temperature (low temperature) vessel, then integrally pacifies paper insulation
Liquid nitrogen is filled mounted in the inside of low-temperature (low temperature) vessel, and in paper insulated inner side.
(3) Main Insulation Structure of Electric device
Main Insulation Structure of Electric device includes：Composite insulation structure and low-temperature (low temperature) vessel, composite insulation structure are placed in low-temperature (low temperature) vessel
Inner side, low-temperature (low temperature) vessel are generally cylindrical.
Composite insulation structure is in vertical high-temperature superconduction resistor-type flow restrictor systems (i.e. zero on the inside of low-temperature (low temperature) vessel cylinder
Current potential side) be arranged, and composite insulation structure and low-temperature (low temperature) vessel are subjected to being connected mechanically, with prevent it is compound absolutely
Paper insulation in edge structure is shifted in the process of running.
Composite insulation structure is placed in the cylinder medial surface of low-temperature (low temperature) vessel, and this is mainly integrated in view of flow restrictor systems, group
The convenience of dress and the reliability of insulation.And the cylinder top surface of low-temperature (low temperature) vessel and bottom surface still carry out major insulation using conventional method and set
Meter, that is, consider the nitrogen gas insulating distance of sufficient surplus.
Those skilled in the art will be understood that the cylindrical low-temperature (low temperature) vessel in above-mentioned the lifted system according to superconductive current limiter
And paper insulation coiling is formed into the columnar structured technical scheme that the embodiment of the present invention is only better described, rather than to the present invention
The restriction that embodiment is made.Low-temperature (low temperature) vessel shape in any system according to superconductive current limiter determines the side of paper insulation shape
Method, it is all contained in the range of the embodiment of the present invention.
According to said apparatus, vertical high-temperature superconductor resistance-type current restrictor carry out the method and step of major insulation as shown in figure 3,
It is specific as follows：
Step S310：It is preforming to paper insulation progress, multi-concentric cylindrical structure is formed with isolit coiling, is obtained
To the paper insulation of shaping.
Paper insulation is carried out it is preforming, i.e., be first closely wound in a spiral form to given thickness with isolit formed it is more
Layer concentric structure, the paper insulation being molded；There is certain gap between the adjacent layer of multilayer concentric structure, according to reality
The needs of situation, the gap between isolated from adjacent material can carry out glued filling by impregnating mode turns into a reality
Body, can also be without filling retention gap；And paper insulated outside dimension is engaged with the internal diameter of low-temperature (low temperature) vessel.
Step S320：According to the design parameter of composite insulation structure, the paper insulation of given thickness is arranged on low-temperature (low temperature) vessel
Inside, paper insulation is close to the cylinder medial surface of low-temperature (low temperature) vessel, and in paper insulated inner side, filling liquid nitrogen obtains composite insulation structure.
In the case where not using the Main Insulation Structure of Electric device described in the embodiment of the present invention, liquid nitrogen undertakes as major insulation
Whole operating voltages and surge voltage.Particularly in current limliting impact process, due to liquid nitrogen vaporization, failure of insulation risk compared with
Greatly.After the Main Insulation Structure of Electric device described in the embodiment of the present invention, liquid nitrogen and paper insulation bear operating voltage and impact jointly
Voltage.So, electric field relationship is during steady operation：
EPaperdPaper+ELiquid nitrogendLiquid nitrogen=VMajor insulation voltage (1)
Thus it is possible to obtain：
ELiquid nitrogendLiquid nitrogen=VMajor insulation voltage-EPaperdPaper (2)
The design parameter of composite insulation structure is that the partial pressure that should be born by device insulate it can be seen from formula (1)
What intensity determined, design parameter specifically includes：Paper insulated thickness dPaper, the space length d of liquid nitrogenLiquid nitrogen, according to VMajor insulation voltageIt can calculate
Draw：Paper insulated thickness dPaperWith the space length d of liquid nitrogenLiquid nitrogen。
As can be seen that by increasing paper insulated thickness from formula (2), the voltage that liquid nitrogen must endure as can be reduced
Value.Particularly in current limliting impact process, although liquid nitrogen vaporization generates a large amount of bubbles, these bubbles are only distributed in liquid nitrogen sky
In.Due to paper insulated shielding action, these bubbles can't reduce the insulating properties of paper insulation part.
Step S330：The center that the superconduction resistance current limiting unit is placed in inside the composite insulation structure, profit
Bear the operating voltage and surge voltage of the superconduction resistance current limiting unit jointly with composite insulation structure.
The major insulation method of the vertical high-temperature superconduction resistance-type current restrictor provided with the embodiment of the present invention is insulated
Structure design, born jointly by the paper insulation close to low-temperature (low temperature) vessel wall and liquid nitrogen in the major insulation electric field of radial direction；And low-temperature (low temperature) vessel
Cylinder top surface and bottom surface major insulation electric field still only have liquid nitrogen bear.
Furthermore, it is contemplated that the resistivity and relative dielectric constant of isolit will be more than liquid nitrogen, using of the invention real
After applying the composite insulation structure device described in example, liquid nitrogen space length d necessary to deviceLiquid nitrogenIt can be reduced, in other words,
The appearance and size of low-temperature (low temperature) vessel is reduced in the device that the embodiment of the present invention is proposed, improves the effective rate of utilization of liquid nitrogen.
The major insulation method of the vertical high-temperature superconduction resistance-type current restrictor provided with the embodiment of the present invention, can be obtained
Overall structure is simple, the uncomplicated Main Insulation Structure of Electric device of manufacture craft.
Embodiment two
This embodiment offers a kind of Main Insulation Structure of Electric device of vertical high-temperature superconduction resistance-type current restrictor.
Fig. 1 is a kind of Main Insulation Structure of Electric device of vertical high-temperature superconduction resistance-type current restrictor provided in an embodiment of the present invention
Schematic diagram.Superconductive current limiter system using the compound Main Insulation Structure of Electric described in the embodiment of the present invention mainly includes：Outgoing line unit
1st, superconduction resistance current limiting unit 2, low-temperature (low temperature) vessel 3, paper insulation 4 and liquid nitrogen 5.Paper insulation 4 is columnar structured, outside paper insulation 4
Footpath size and the minor diameter fit of low-temperature (low temperature) vessel 3, by paper insulation 4 after outside coiling is formed, are installed on the inside of low-temperature (low temperature) vessel 3,
And fixation mechanically is carried out with the cylindrical side wall of low-temperature (low temperature) vessel 3, to prevent paper insulation 4 from operating displacement occurs.
Designed by Fig. 1 composite insulation structure, it is exhausted by the paper close to low-temperature (low temperature) vessel side wall in the major insulation electric field of radial direction
Edge 3 and liquid nitrogen 5 are born jointly.And warm container cylinder top surface and the major insulation electric field of bottom surface still only have liquid nitrogen and born.
Fig. 2 is a kind of Main Insulation Structure of Electric device of vertical high-temperature superconduction resistance-type current restrictor provided in an embodiment of the present invention
Paper insulated structure composition schematic diagram.The isolits such as cable paper, insulating board, PPLP 41 are closely wound in a spiral form
To given thickness, the thickness is determined by the partial pressure dielectric strength designed.Gap 42 between isolated from adjacent material 41 can lead to
The glued filling of impregnating mode is crossed, can also be not filled with.
In summary, the embodiment of the present invention devises a kind of major insulation knot for vertical high-temperature superconduction resistance-type current restrictor
Structure apparatus and method, on the premise of the resistance to pressure request of major insulation is met, reduce the block dimension of superconductive current limiter, reduce superconduction limit
The equipment for flowing device takes up an area demand.The insulation system device of design of the embodiment of the present invention is a kind of composite construction, exhausted in the device
Edge structure includes liquid nitrogen and isolit, compound with liquid nitrogen using isolit formation multilayer concentric structure, bears jointly
The operating voltage and surge voltage of high-temperature superconductor resistance-type current restrictor, and it is necessary by increasing paper insulated thickness reduction liquid nitrogen institute
The magnitude of voltage born, so as to reduce the space length of liquid nitrogen so that the Main Insulation Structure of Electric device monnolithic case size reduces, and improves
The effective rate of utilization of liquid nitrogen.The structure of the embodiment of the present invention is simple, and manufacture craft is uncomplicated, and production efficiency is high, disclosure satisfy that big
The demand of batch production.
One of ordinary skill in the art will appreciate that：Accompanying drawing is the schematic diagram of one embodiment, module in accompanying drawing or
Flow is not necessarily implemented necessary to the present invention.
As seen through the above description of the embodiments, those skilled in the art can be understood that the present invention can
Realized by the mode of software plus required general hardware platform.Based on such understanding, technical scheme essence
On the part that is contributed in other words to prior art can be embodied in the form of software product, the computer software product
It can be stored in storage medium, such as ROM/RAM, magnetic disc, CD, including some instructions are causing a computer to set
Standby (can be personal computer, server, either network equipment etc.) performs certain of each embodiment of the present invention or embodiment
Method described in a little parts.
Each embodiment in this specification is described by the way of progressive, identical similar portion between each embodiment
Divide mutually referring to what each embodiment stressed is the difference with other embodiment.Especially for device or
For system embodiment, because it is substantially similar to embodiment of the method, so describing fairly simple, related part is referring to method
The part explanation of embodiment.Apparatus and system embodiment described above is only schematical, wherein the conduct
The unit that separating component illustrates can be or may not be it is physically separate, can be as the part that unit is shown or
Person may not be physical location, you can with positioned at a place, or can also be distributed on multiple NEs.Can root
Factually border needs to select some or all of module therein realize the purpose of this embodiment scheme.Ordinary skill
Personnel are without creative efforts, you can to understand and implement.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in,
It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
It is defined.
Claims (10)
- A kind of 1. Main Insulation Structure of Electric device of vertical high-temperature superconduction resistance-type current restrictor, it is characterised in that including：Outgoing line unit, Superconduction resistance current limiting unit, low-temperature (low temperature) vessel, paper insulation and liquid nitrogen, the center that the superconduction resistance current limiting unit is placed in inside device Position simultaneously connects two outgoing line units, and the outgoing line unit is drawn to outside device, and the paper insulation is placed in the low temperature and held The inner side of device, the liquid nitrogen are placed between the paper insulation and the superconduction resistance current limiting unit, and the liquid nitrogen and the paper are exhausted The composite insulation structure of edge composition, the operating voltage and surge voltage of high-temperature superconductor resistance-type current restrictor are born jointly.
- 2. the Main Insulation Structure of Electric device of vertical high-temperature superconduction resistance-type current restrictor according to claim 1, it is characterised in that The paper insulation carries out mechanical connection fixation with the low-temperature (low temperature) vessel, for preventing the paper insulation to be shifted in operation.
- 3. the Main Insulation Structure of Electric device of vertical high-temperature superconduction resistance-type current restrictor according to claim 1 or 2, its feature exist In the paper insulation is a kind of multilayer concentric structure being made up of isolit, and paper insulation is generally columnar structured.
- 4. the Main Insulation Structure of Electric device of vertical high-temperature superconduction resistance-type current restrictor according to claim 1, it is characterised in that Gap between isolit described in adjacent layer, carrying out glued filling as desired by impregnation method turns into an entity, Or without filling retention gap.
- 5. the Main Insulation Structure of Electric device of vertical high-temperature superconduction resistance-type current restrictor according to claim 1, it is characterised in that The paper insulated outside dimension is identical with the internal diameter of the low-temperature (low temperature) vessel.
- 6. the Main Insulation Structure of Electric device of vertical high-temperature superconduction resistance-type current restrictor according to claim 1, it is characterised in that The isolit has good mechanical property at low temperature, at room temperature with good forming characteristic；The isolit selects cable paper, insulating board or PPLP.
- 7. the Main Insulation Structure of Electric device of vertical high-temperature superconduction resistance-type current restrictor according to claim 1, it is characterised in that The low-temperature (low temperature) vessel is cylindrical structural, and the paper insulation is placed in the cylinder medial surface of the low-temperature (low temperature) vessel, the low-temperature (low temperature) vessel Cylinder top surface and bottom cylindrical face and the liquid nitrogen at a distance of sufficient surplus nitrogen gas insulating distance.
- A kind of 8. major insulation method of vertical high-temperature superconduction resistance-type current restrictor, it is characterised in that including：It is preforming to paper insulation progress, multi-concentric cylindrical structure is formed with the isolit coiling, is obtained into The paper insulation of type；It is according to the design parameter of composite insulation structure, the paper insulation is exhausted installed in the inside of the low-temperature (low temperature) vessel, the paper Edge is close to the cylinder medial surface of the low-temperature (low temperature) vessel, and in paper insulated inner side, filling liquid nitrogen obtains composite insulation structure；The center that the superconduction resistance current limiting unit is placed in inside the composite insulation structure, utilizes composite insulation structure The operating voltage and surge voltage of the superconduction resistance current limiting unit are born jointly.
- 9. the major insulation method of vertical high-temperature superconduction resistance-type current restrictor according to claim 8, it is characterised in that described The design parameter according to composite insulation structure, by the paper insulation be arranged on the low-temperature (low temperature) vessel inside, the paper insulation It is close to the cylinder medial surface of the low-temperature (low temperature) vessel, in paper insulated inner side, filling liquid nitrogen obtains composite insulation structure, including：The design parameter is that the partial pressure dielectric strength being subjected to by device determines that design parameter specifically includes：The paper The thickness d of insulationPaper, the space length d of the liquid nitrogenLiquid nitrogen；Using the composite insulation structure, the liquid nitrogen and the paper insulation bear operating voltage and surge voltage jointly, steady When state works, electric field relationship is：EPaperdPaper+ELiquid nitrogendLiquid nitrogen=VMajor insulation voltage (1)Drawn from above formula：ELiquid nitrogendLiquid nitrogen=VMajor insulation voltage-EPaperdPaper (2)In above-mentioned two formula, according to VMajor insulation voltageValue be calculated：The paper insulated thickness dPaperGrown with the space of the liquid nitrogen Spend dLiquid nitrogen, and by increasing the paper insulated thickness dPaper, reduce the magnitude of voltage that the liquid nitrogen must endure as.
- 10. the major insulation method of vertical high-temperature superconduction resistance-type current restrictor according to claim 8, it is characterised in that institute The operating voltage and surge voltage for bearing the superconduction resistance current limiting unit jointly using composite insulation structure are stated, including：The major insulation electric field of the radial direction formed in device, the paper insulation and the liquid by the low-temperature (low temperature) vessel cylindrical side Nitrogen is born jointly；The major insulation electric field of the cylinder top surface of the low-temperature (low temperature) vessel and bottom cylindrical face in device, is born by liquid nitrogen.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649547A (en) * | 2018-03-28 | 2018-10-12 | 中国科学院电工研究所 | A kind of resistor-type high temperature superconducting malfunction current limiter |
| CN109818342A (en) * | 2019-03-18 | 2019-05-28 | 广东电网有限责任公司 | A kind of superconductive current limiter with composite insulation structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1489769A (en) * | 2001-11-02 | 2004-04-14 | ס�ѵ�����ҵ��ʽ���� | Superconductive cable and superconductive cable line |
| CN101369481A (en) * | 2008-06-24 | 2009-02-18 | 保定天威集团有限公司 | Application of TIII sheet paper in oil-immersed type transformer as low-dielectric constant insulation material |
| CN102859613A (en) * | 2010-05-10 | 2013-01-02 | 古河电气工业株式会社 | Superconducting cable |
| CN103345990A (en) * | 2013-06-16 | 2013-10-09 | 中国科学院电工研究所 | Line outgoing casing pipe applied to high-pressure superconductivity electrical equipment |
| CN106783027A (en) * | 2016-12-27 | 2017-05-31 | 中国科学院合肥物质科学研究院 | A kind of isolating transformer |
-
2017
- 2017-11-13 CN CN201711117409.1A patent/CN107800123B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1489769A (en) * | 2001-11-02 | 2004-04-14 | ס�ѵ�����ҵ��ʽ���� | Superconductive cable and superconductive cable line |
| CN101369481A (en) * | 2008-06-24 | 2009-02-18 | 保定天威集团有限公司 | Application of TIII sheet paper in oil-immersed type transformer as low-dielectric constant insulation material |
| CN102859613A (en) * | 2010-05-10 | 2013-01-02 | 古河电气工业株式会社 | Superconducting cable |
| CN103345990A (en) * | 2013-06-16 | 2013-10-09 | 中国科学院电工研究所 | Line outgoing casing pipe applied to high-pressure superconductivity electrical equipment |
| CN106783027A (en) * | 2016-12-27 | 2017-05-31 | 中国科学院合肥物质科学研究院 | A kind of isolating transformer |
Non-Patent Citations (2)
| Title |
|---|
| 王之瑄等: "冷绝缘超导电缆绝缘材料测试综述", 《超导技术》 * |
| 王邦柱等: "高压电阻型超导限流器制冷工质中的气泡研究", 《低温技术》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649547A (en) * | 2018-03-28 | 2018-10-12 | 中国科学院电工研究所 | A kind of resistor-type high temperature superconducting malfunction current limiter |
| CN108649547B (en) * | 2018-03-28 | 2019-11-15 | 中国科学院电工研究所 | A kind of resistor-type high temperature superconducting malfunction current limiter |
| CN109818342A (en) * | 2019-03-18 | 2019-05-28 | 广东电网有限责任公司 | A kind of superconductive current limiter with composite insulation structure |
| CN109818342B (en) * | 2019-03-18 | 2024-01-23 | 广东电网有限责任公司 | Superconducting current limiter with composite insulating structure |
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