CN108173254A - A kind of protective cover for inhibiting superconductive failure current limiter liquid nitrogen vaporization - Google Patents
A kind of protective cover for inhibiting superconductive failure current limiter liquid nitrogen vaporization Download PDFInfo
- Publication number
- CN108173254A CN108173254A CN201711456003.6A CN201711456003A CN108173254A CN 108173254 A CN108173254 A CN 108173254A CN 201711456003 A CN201711456003 A CN 201711456003A CN 108173254 A CN108173254 A CN 108173254A
- Authority
- CN
- China
- Prior art keywords
- protective cover
- liquid nitrogen
- current limiter
- superconducting tape
- nitrogen vaporization
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
Abstract
The invention discloses a kind of protective covers for inhibiting superconductive failure current limiter liquid nitrogen vaporization, pass through the additional protective cover around superconducting tape, it largely avoids the superconducting tape under liquid nitrogen environment and quenches heat production and cause the harm such as insulation breakdown caused by liquid nitrogen vaporization, reduce the restriction that liquid nitrogen vaporization is applied to superconducting tape in high-voltage large current field, the cost of high temperature superconducting malfunction current limiter is greatly reduced, improves the reliability of electric system.
Description
Technical field
The present invention relates to current limiter technical fields, and in particular to a kind of protection for inhibiting superconductive failure current limiter liquid nitrogen vaporization
Cover.
Background technology
With power system load increase rapidly and the tight contact of each bulk power grid, lead to grid short circuit electric currents at different levels
Horizontal continuous increase, short circuit current have very big harm in itself to the safe and stable operation and electrical equipment of electric system
Property.Fault current limiter can limit Power System Shortcuts electric current, so as to effectively mitigate the burden of the various electrical equipments such as breaker,
Its functional reliability and service life are improved, improves the operational reliability of electric system.Superconductive failure current limiter mainly divides at present
For quench type and it is non-quench type, for quenching the superconductive current limiter of type, liquid nitrogen vaporization caused by superconductor quenches rear heat production for
The insulation performance of current limiter is a very big threat, and the superconductive failure current limiter for applying safeguard procedures effectively limits
Destruction of the bubble for insulation performance so that application of the superconductor in high voltage field becomes a kind of possibility, and greatly reduce
The cost of superconductive part.
Invention content
In order to solve the above-mentioned problems of the prior art, the purpose of the present invention is to provide a kind of inhibition super-conductive fault limits
The protective cover of device liquid nitrogen vaporization is flowed, reduces the restriction of bubble, bubble is reduced for the destruction of insulation performance and reaches higher electricity
Press grade.
To achieve the above objectives, the present invention adopts the following technical scheme that：
A kind of protective cover for inhibiting superconductive failure current limiter liquid nitrogen vaporization, it is characterised in that：
The protective cover be in hollow full skirt shape, be made by stainless steel, the protective cover is set as multilayer, from up to
Lower interval is nested on insulation tube；
Each layer of protective cover is nested with the top superconducting tape in part with the protective cover and connect, and has with the part most
The high-rise same potential of superconducting tape；
After liquid nitrogen vaporization is caused due to superconducting tape heat production, bubble is influenced by natural buoyancy and electric field on rapid
It rises and is gathered in protective cover and no longer spreads, so as to inhibit liquid nitrogen gasification.
To additional protective cover around superconducting tape, make the no longer random diffusion of bubble, make superconducting tape original critical
It is quenched under current value, achievees the purpose that current limliting.
Compared to the prior art the present invention, has the following advantages that：
1st, existing lost super conductive fault current limiter can cause liquid nitrogen vaporization after superconductor quenches under liquid nitrogen environment, produce
Raw a large amount of bubble can substantially reduce the insulation performance of equipment, constrain its application in high voltage field, it is designed based on
The superconducting tape bubble safeguard procedures of liquid nitrogen environment prevent the diffusion of bubble, reduce destruction of the bubble for insulation performance,
So that high temperature superconducting malfunction current limiter reaches higher voltage class.
2nd, the existing lost super conductive current limiter harm that bubble generation is brought in order to prevent, is only significantly increased superconductive tape
The dosage of material reduces heat production, and after bubble protective cover is added to superconducting tape, superconducting tape is restricted by bubble generation
It greatly reduces, therefore the dosage of superconducting tape reduces, greatly reduces the cost of high temperature superconducting malfunction current limiter.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is structure top view of the present invention.
In figure：The insulation tube of 1 winding superconducting tape, 2 protective covers
Specific embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As shown in Figure 1, the present invention, by the way of bubble protective cover is added to superconductive current limiter, middle column is super for winding
The insulation tube of conduction band material has several layers of superconducting tape to be wound on insulation tube, and full skirt shape is additional multilayer proofing cover on insulation tube,
The wherein vertical view of Fig. 2 positions protective cover, protection cover material are stainless steel, each protective cover and top superconduction in this layer of protective cover
Band connect and have with its same potential, bubble is influenced to rise rapidly by natural buoyancy and electric field after liquid nitrogen vaporization
And be gathered in bubble protective cover and no longer spread, the equally likely possibilities such as breakdown substantially reduce as caused by the reasons such as edge flashing,
The dosage of superconducting tape is greatly reduced.
Claims (1)
1. a kind of protective cover for inhibiting superconductive failure current limiter liquid nitrogen vaporization, it is characterised in that：
The protective cover be in hollow full skirt shape, be made by stainless steel, the protective cover is set as multilayer, from top to bottom between
Spacer is put on insulation tube；
Each layer of protective cover is nested with the top superconducting tape in part with the protective cover and connect, and with top with the part
The same potential of superconducting tape；
After liquid nitrogen vaporization is caused due to superconducting tape heat production, bubble is influenced to rise rapidly simultaneously by natural buoyancy and electric field
It is gathered in protective cover and no longer spreads, so as to inhibit liquid nitrogen gasification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711456003.6A CN108173254A (en) | 2017-12-28 | 2017-12-28 | A kind of protective cover for inhibiting superconductive failure current limiter liquid nitrogen vaporization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711456003.6A CN108173254A (en) | 2017-12-28 | 2017-12-28 | A kind of protective cover for inhibiting superconductive failure current limiter liquid nitrogen vaporization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108173254A true CN108173254A (en) | 2018-06-15 |
Family
ID=62519141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711456003.6A Pending CN108173254A (en) | 2017-12-28 | 2017-12-28 | A kind of protective cover for inhibiting superconductive failure current limiter liquid nitrogen vaporization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108173254A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102265419A (en) * | 2008-12-22 | 2011-11-30 | 皇家飞利浦电子股份有限公司 | Superconducting switch cooled by means of internal cavity filled with liquid or gaseous coolant |
| JP2012157494A (en) * | 2011-01-31 | 2012-08-23 | Unicharm Corp | Absorbent article |
| CN103548163A (en) * | 2011-05-18 | 2014-01-29 | 住友电气工业株式会社 | Fault current limiter |
-
2017
- 2017-12-28 CN CN201711456003.6A patent/CN108173254A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102265419A (en) * | 2008-12-22 | 2011-11-30 | 皇家飞利浦电子股份有限公司 | Superconducting switch cooled by means of internal cavity filled with liquid or gaseous coolant |
| JP2012157494A (en) * | 2011-01-31 | 2012-08-23 | Unicharm Corp | Absorbent article |
| CN103548163A (en) * | 2011-05-18 | 2014-01-29 | 住友电气工业株式会社 | Fault current limiter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Yang et al. | Design and application of superconducting fault current limiter in a multiterminal HVDC system | |
| US8437113B2 (en) | Cooling and shielding of a high voltage converter | |
| Humpert | Long distance transmission systems for the future electricity supply–Analysis of possibilities and restrictions | |
| CN105931923B (en) | A kind of high voltage DC breaker | |
| Li et al. | A new topology for current limiting HVDC circuit breaker | |
| Xiang et al. | Quenched resistance effects on a superconducting current-limiting-type DC breaker | |
| CN109994282A (en) | The cold insulation high-temperature superconductor direct current cables of positive and negative electrodes in same axle construction | |
| Khorasaninejad et al. | Application of a resistive mutual-inductance fault current limiter in VSC-based HVDC system | |
| CN101656131B (en) | Explosion-proof lightning arrester | |
| CN202584884U (en) | Insulation shielding type tubular bus | |
| CN108173254A (en) | A kind of protective cover for inhibiting superconductive failure current limiter liquid nitrogen vaporization | |
| CN102290775A (en) | Lightning-caused breaking prevention method for 10kV overhead insulating line | |
| Shu et al. | A novel current-limiting circuit based on resistive-type SFCL for fault in DC power system | |
| CN104040743B (en) | Techniques for protecting a supercon-ducting (sc) tape | |
| CN203260987U (en) | High-voltage line lightning arrester | |
| CN103779787B (en) | Ability of swimming blow-out protection inter space device for low and medium voltage distribution network | |
| CN105870860A (en) | Novel valve tower structure for high-voltage direct-current breaker | |
| Huang et al. | Fault current limiter for the MMC‐based multi‐terminal DC grids | |
| CN203119291U (en) | Water type arc extinguishing clearance protection device for middle/low voltage distribution network | |
| CN102545126A (en) | Same-tower four-loop power transmission line configured with differentiation insulators | |
| CN101533694B (en) | Novel high-energy ZnO lightning arrester with liquid evaporation cooling function | |
| CN104134979B (en) | Resonant superconducting short-circuit fault current limiter | |
| WO2020186692A1 (en) | Superconducting current limiter having composite insulation structure | |
| CN206775089U (en) | A kind of overhead transmission line overvoltage protection device | |
| CN202434258U (en) | Novel high voltage and ultrahigh voltage crosslinked polyethylene insulated power cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180615 |