JPS6455016A - Dc current limiter - Google Patents

Dc current limiter

Info

Publication number
JPS6455016A
JPS6455016A JP62210914A JP21091487A JPS6455016A JP S6455016 A JPS6455016 A JP S6455016A JP 62210914 A JP62210914 A JP 62210914A JP 21091487 A JP21091487 A JP 21091487A JP S6455016 A JPS6455016 A JP S6455016A
Authority
JP
Japan
Prior art keywords
coil
current
magnetic field
state
flows
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
Application number
JP62210914A
Other languages
Japanese (ja)
Inventor
Mamoru Hosomi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP62210914A priority Critical patent/JPS6455016A/en
Publication of JPS6455016A publication Critical patent/JPS6455016A/en
Pending legal-status Critical Current

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 obtain a simple and highly reliable DC current limiter by detecting an overcurrent by a first coil to automatically energize a second coil, and altering a superconducting state to a normal conducting state using this magnetic field. CONSTITUTION:The main circuit of a first coil 11 is held in a superconducting state in a steady state, the relation of a current i1= io is set. When an overcurrent flows due to a short-circuit accident, the current i1 increases, a voltage corresponding to the product of a current change and the reactance of the coil 11 is generated in the coil 11, and a current i2 flows, part of the current i2 becomes a current i4, thereby energizing a second coil 13. When a magnetic field generated from the coil 13 exceeds the critical magnetic field of the coil 11 of the superconducting member, the first coil 11 can not hold the superconducting state to generate a resistance, thereby limiting the current. In this case, the voltage of the coil 11 tends to abruptly rise, but a current flows to the parallel resistor 14 of the coil 13, thereby preventing an extreme overvoltage from generating.
JP62210914A 1987-08-24 1987-08-24 Dc current limiter Pending JPS6455016A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62210914A JPS6455016A (en) 1987-08-24 1987-08-24 Dc current limiter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62210914A JPS6455016A (en) 1987-08-24 1987-08-24 Dc current limiter

Publications (1)

Publication Number Publication Date
JPS6455016A true JPS6455016A (en) 1989-03-02

Family

ID=16597156

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62210914A Pending JPS6455016A (en) 1987-08-24 1987-08-24 Dc current limiter

Country Status (1)

Country Link
JP (1) JPS6455016A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6337785B1 (en) 1999-01-28 2002-01-08 Sumitomo Electric Industries, Ltd. Fault current limiter
US9800171B2 (en) 2014-02-14 2017-10-24 Mitsubishi Electric Corporation Protection system for DC power transmission system, AC-DC converter, and method of interrupting DC power transmission system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6337785B1 (en) 1999-01-28 2002-01-08 Sumitomo Electric Industries, Ltd. Fault current limiter
US9800171B2 (en) 2014-02-14 2017-10-24 Mitsubishi Electric Corporation Protection system for DC power transmission system, AC-DC converter, and method of interrupting DC power transmission system

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