CN111292916A - Solenoid type superconducting current limiter framework - Google Patents
Solenoid type superconducting current limiter framework Download PDFInfo
- Publication number
- CN111292916A CN111292916A CN202010207618.0A CN202010207618A CN111292916A CN 111292916 A CN111292916 A CN 111292916A CN 202010207618 A CN202010207618 A CN 202010207618A CN 111292916 A CN111292916 A CN 111292916A
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- China
- Prior art keywords
- current limiter
- superconducting current
- base frame
- former
- framework
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements therefor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/04—Cooling
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F2006/001—Constructive details of inductive current limiters
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
Abstract
The invention relates to a solenoid type superconducting current limiter framework, which comprises a base frame made of insulating materials, wherein a spiral coil channel used for winding a superconducting tape to form a coil is arranged on the base frame, a circulation groove crossed with the coil channel is arranged on the base frame, and a fixing groove used for fixing a current lead is also arranged on the base frame. The invention adopts insulating materials to manufacture the framework of the solenoid type superconducting current limiter, adds a circulation groove on the basis of the existing solenoid, increases the heat exchange area on the basis of the original structure after slotting, and is greatly helpful for quench recovery. The solenoid type superconducting current limiter framework with the structure is mainly used for solenoid type superconducting current limiters and solenoid type superconducting structures, and for superconducting coils, the structure increases the heat exchange area, improves the heat exchange effect and can improve the quench recovery characteristic of the superconducting coils.
Description
Technical Field
The invention relates to a solenoid type superconducting current limiter framework, and belongs to the technical field of superconducting current limiters.
Background
As the load of the power grid increases, the voltage level gradually increases, and the short-circuit current also sharply increases when a fault occurs. The excessive short-circuit current can seriously damage the power grid line and communication equipment, and the normal life of people is influenced. And the breaking capacity of the existing circuit breaker is difficult to meet the level of the short-circuit current of the power grid, and the rising of the short-circuit current of the line gradually becomes a key factor influencing the safe operation of the power grid.
At present, for dealing with the problem of overlarge short-circuit current, traditional current limiting devices such as a high-impedance transformer and a current limiting reactor are often used, but the voltage drop of the traditional current limiting devices accounts for 4 to 10 percent of the line voltage drop when the traditional current limiting devices are used for normal power transmission, so that the voltage regulation capacity of a power grid is weakened. With the development of superconduction, the superconducting current limiter meets the characteristics of low impedance in normal operation and high impedance generated when a fault occurs, a system can automatically enter the low impedance after the current is limited, and the superconducting current limiter is more and more concerned.
The resistive superconducting current limiter has many examples in the power grid due to quick response, simple principle and obvious current limiting effect. The solenoid type current limiter is formed by winding a superconducting coil on an epoxy barrel in parallel at equal intervals, and the heat exchange effect is general. Therefore, the framework of the solenoid type superconducting current limiter which increases the heat exchange area is necessary to be designed.
Disclosure of Invention
In order to solve the above problems in the prior art, the invention provides a solenoid-type superconducting current limiter framework, and the technical scheme of the invention is as follows:
a solenoid-type superconducting current limiter framework comprises a base frame made of insulating materials, wherein a spiral coil channel used for winding a superconducting tape to form a coil is arranged on the base frame, a circulation groove crossed with the coil channel is arranged on the base frame, and a fixing groove used for fixing a current lead is further arranged on the base frame.
Preferably, the base frame material is an epoxy material.
Preferably, the coil channels are multiple, and the thread pitches of the multiple coil channels are the same.
Preferably, the flow channel extends axially from one end of the base frame to the other.
Preferably, the flow-through channel is a plurality of channels.
Preferably, the plurality of flow channels are evenly distributed along the circumference of the base frame.
Preferably the cross-section of the flow-through channel is rectangular.
Preferably, the plurality of flow-through channels differ in width.
Preferably, the cross-sectional shapes of the plurality of flow-through channels are different.
The invention adopts insulating materials to manufacture the framework of the solenoid type superconducting current limiter, adds a circulation groove on the basis of the existing solenoid, increases the heat exchange area on the basis of the original structure after slotting, and is greatly helpful for quench recovery. The solenoid type superconducting current limiter framework with the structure is mainly used for solenoid type superconducting current limiters and solenoid type superconducting structures, and for superconducting coils, the structure increases the heat exchange area, improves the heat exchange effect and can improve the quench recovery characteristic of the superconducting coils.
Drawings
In order that the technical solutions and advantageous effects of the present invention can be more easily understood, the present invention will be described in detail with reference to specific embodiments thereof shown in the accompanying drawings. The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention:
FIG. 1 is a schematic structural diagram of an embodiment of a solenoid-type superconducting current limiter skeleton according to the present invention
Fig. 2 is a schematic diagram of a specific application of the solenoid-type superconducting current limiter framework in the embodiment of fig. 1.
Detailed Description
The present invention will be described in further detail below with reference to fig. 1-2.
As shown in fig. 1, the skeleton structure of the solenoidal superconducting current limiter of the present invention mainly comprises four parts, namely a base frame 1, a circulation groove 2, a coil channel 3 and a fixing groove 4. The base frame 1 is provided with a coil channel 3, a circulation groove 2 and a fixing groove 4, the base frame 1 is provided with a spiral coil channel 3 with a certain depth, and the circulation groove 2 which is crossed with the coil channel 3 and is away from the surface of the base frame 1 with a certain depth is arranged on the surface of the base frame 1 at intervals. The base frame is provided with a fixing groove 4 for fixing the current lead. The coil channels 3 of the bobbin may be of different pitch, different depth. The flow channels 2 of the carcass can be cut as rectangular as shown, or can be provided in different shapes, for example trapezoidal. The flow channels 2 can be varied in different positions and with different widths and shapes, the flow channels 2 being evenly distributed along the circumference of the base frame and extending axially from one end of the base frame to the other.
As shown in fig. 2, the solenoid-type superconducting current limiter skeleton is practically used after winding a superconducting tape. And a superconducting tape 5 is wound on a coil channel 3 on the framework of the solenoid type superconducting current limiter, two ends of the coil are fixed on current leads 6, and the current leads 6 are arranged on the fixing grooves 4. A plurality of solenoids wound with superconducting tapes 5 are connected in series through current leads 6, and immersed in liquid nitrogen as a current limiter unit of a superconducting current limiter.
The whole framework of the invention is an integral body, is not an assembly structure and is made of insulating materials, such as epoxy materials. The superconducting coil is wound in a coil channel 3 of a solenoid type superconducting current limiter framework, a circulation groove 2 is formed in the surface of the framework, the channel is cut off to form a discontinuous channel, two sides of the superconducting coil above the circulation groove 3 are in contact with liquid nitrogen, and the contact area of the coil and the liquid nitrogen is greatly increased. Two ends of the superconducting coil are fixed on the current lead wires and connected in series and parallel with the adjacent solenoids.
The present invention may be embodied in other specific forms without departing from its scope, which is limited only by the accompanying claims.
Claims (9)
1. A solenoid-type superconducting current limiter framework comprises a base frame made of insulating materials, wherein a spiral coil channel used for winding a superconducting tape to form a coil is arranged on the base frame, a circulation groove crossed with the coil channel is arranged on the base frame, and a fixing groove used for fixing a current lead is further arranged on the base frame.
2. The solenoidal superconducting current limiter former of claim 1, wherein the pedestal material is an epoxy material.
3. The solenoidal superconducting current limiter former of claim 1, wherein the coil channels are multiple in number, the pitch of the multiple coil channels being the same.
4. The solenoidal superconducting current limiter former of claim 1, wherein the flow groove extends axially from one end of the pedestal to the other.
5. The solenoidal superconducting current limiter former of any one of claims 1-4, wherein the flow-through slot is multi-strip.
6. The solenoidal superconducting current limiter former of claim 5, wherein the plurality of circulation slots are evenly distributed along a circumference of the base frame.
7. The solenoidal superconducting current limiter former of claim 5, wherein the plurality of flow slots differ in width.
8. The solenoidal superconducting current limiter former of claim 5, wherein the plurality of flow-through slots differ in cross-sectional shape.
9. The solenoidal superconducting current limiter former of any one of claims 1-4, wherein the cross-sectional shape of the flow-through slot is rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010207618.0A CN111292916A (en) | 2020-03-23 | 2020-03-23 | Solenoid type superconducting current limiter framework |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010207618.0A CN111292916A (en) | 2020-03-23 | 2020-03-23 | Solenoid type superconducting current limiter framework |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111292916A true CN111292916A (en) | 2020-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010207618.0A Pending CN111292916A (en) | 2020-03-23 | 2020-03-23 | Solenoid type superconducting current limiter framework |
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| Country | Link |
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| CN (1) | CN111292916A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112582172A (en) * | 2020-12-17 | 2021-03-30 | 安徽沃华电力设备有限公司 | Composite insulating cylinder, current limiter and processing technology thereof |
| CN114221314A (en) * | 2021-12-14 | 2022-03-22 | 国网江苏省电力有限公司经济技术研究院 | Reinforced conductor and resistance-inductance type superconducting current limiter coil |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102637502A (en) * | 2012-03-06 | 2012-08-15 | 中国科学院电工研究所 | Barrel type high-temperature superconducting non-inductive coil |
| CN202771898U (en) * | 2012-08-27 | 2013-03-06 | 广东中鹏电气有限公司 | Winding insulating frame for dry-type transformer |
| CN105359230A (en) * | 2013-07-17 | 2016-02-24 | 罗德施瓦兹两合股份有限公司 | Coil for a switching device having high high-frequency power |
| CN109462218A (en) * | 2018-12-10 | 2019-03-12 | 深圳供电局有限公司 | A kind of photoelectricity complex superconducting current limiter winding construction |
| CN209980924U (en) * | 2019-07-04 | 2020-01-21 | 常州市武进宏富电子器件有限公司 | Magnetic core structure with good heat dissipation |
-
2020
- 2020-03-23 CN CN202010207618.0A patent/CN111292916A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102637502A (en) * | 2012-03-06 | 2012-08-15 | 中国科学院电工研究所 | Barrel type high-temperature superconducting non-inductive coil |
| CN202771898U (en) * | 2012-08-27 | 2013-03-06 | 广东中鹏电气有限公司 | Winding insulating frame for dry-type transformer |
| CN105359230A (en) * | 2013-07-17 | 2016-02-24 | 罗德施瓦兹两合股份有限公司 | Coil for a switching device having high high-frequency power |
| CN109462218A (en) * | 2018-12-10 | 2019-03-12 | 深圳供电局有限公司 | A kind of photoelectricity complex superconducting current limiter winding construction |
| CN209980924U (en) * | 2019-07-04 | 2020-01-21 | 常州市武进宏富电子器件有限公司 | Magnetic core structure with good heat dissipation |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112582172A (en) * | 2020-12-17 | 2021-03-30 | 安徽沃华电力设备有限公司 | Composite insulating cylinder, current limiter and processing technology thereof |
| CN112582172B (en) * | 2020-12-17 | 2022-09-27 | 安徽沃华电力设备有限公司 | Composite insulating cylinder, current limiter and processing technology of composite insulating cylinder |
| CN114221314A (en) * | 2021-12-14 | 2022-03-22 | 国网江苏省电力有限公司经济技术研究院 | Reinforced conductor and resistance-inductance type superconducting current limiter coil |
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Application publication date: 20200616 |