JPS6423721A - Current limiter - Google Patents
Current limiterInfo
- Publication number
- JPS6423721A JPS6423721A JP62177725A JP17772587A JPS6423721A JP S6423721 A JPS6423721 A JP S6423721A JP 62177725 A JP62177725 A JP 62177725A JP 17772587 A JP17772587 A JP 17772587A JP S6423721 A JPS6423721 A JP S6423721A
- Authority
- JP
- Japan
- Prior art keywords
- current
- superconductors
- series
- state
- superconducting state
- 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
- H02H9/023—Current limitation using superconducting elements
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
PURPOSE:To lengthen service life of a series circuit of a thyristor, a resistor and a series power source, by feeding current having magnitude higher than an inherent critical level through a superconductor. CONSTITUTION:Upon firing of thyristors 27, 127, current is fed from series circuits 25, 125 through thyristors 27, 127 to superconductors 24, 124 and lapped over existing current. When the total current exceeds over a critical current level of the superconductors 24, 124, superconducting state of the superconductors 24, 124 is missed and high resistance is provided to limit load current. Upon missing of superconducting state, Joule's heat is produced in the superconductors 24, 124 to rise the temperature of the superconductors which is not recovered to superconducting state but maintained in high resistance state. A switchgear (not shown) is opened under this state to interrupt current. Consequently, a series body of thyristor, resistor and D.C. power source is not consumped even after repeated use, resulting in a lengthened service life.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62177725A JPS6423721A (en) | 1987-07-15 | 1987-07-15 | Current limiter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62177725A JPS6423721A (en) | 1987-07-15 | 1987-07-15 | Current limiter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6423721A true JPS6423721A (en) | 1989-01-26 |
Family
ID=16036020
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62177725A Pending JPS6423721A (en) | 1987-07-15 | 1987-07-15 | Current limiter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6423721A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6845678B2 (en) | 2002-04-08 | 2005-01-25 | Hoya Corporation | Spectacle frame shape measuring apparatus |
WO2006058576A1 (en) * | 2004-12-04 | 2006-06-08 | Forschungszentrum Karlsruhe Gmbh | Additional device in a current limiter for limiting current in the event of a fault |
-
1987
- 1987-07-15 JP JP62177725A patent/JPS6423721A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6845678B2 (en) | 2002-04-08 | 2005-01-25 | Hoya Corporation | Spectacle frame shape measuring apparatus |
WO2006058576A1 (en) * | 2004-12-04 | 2006-06-08 | Forschungszentrum Karlsruhe Gmbh | Additional device in a current limiter for limiting current in the event of a fault |
US7327542B2 (en) | 2004-12-04 | 2008-02-05 | Forschungazentrum Karlsruhe Gmbh | Current limiter for limiting current in case of a fault |
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