DK0483189T3 - Fiber optic device for measuring an electric current - Google Patents

Fiber optic device for measuring an electric current

Info

Publication number
DK0483189T3
DK0483189T3 DK90910592.6T DK90910592T DK0483189T3 DK 0483189 T3 DK0483189 T3 DK 0483189T3 DK 90910592 T DK90910592 T DK 90910592T DK 0483189 T3 DK0483189 T3 DK 0483189T3
Authority
DK
Denmark
Prior art keywords
optical fibre
measuring
electric current
twisting
fiber optic
Prior art date
Application number
DK90910592.6T
Other languages
Danish (da)
Inventor
Dirk Peier
Holger Hirsch
Original Assignee
Messwandler Bau Ag
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 Messwandler Bau Ag filed Critical Messwandler Bau Ag
Application granted granted Critical
Publication of DK0483189T3 publication Critical patent/DK0483189T3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/24—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices
    • G01R15/245—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices using magneto-optical modulators, e.g. based on the Faraday or Cotton-Mouton effect
    • G01R15/246—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices using magneto-optical modulators, e.g. based on the Faraday or Cotton-Mouton effect based on the Faraday, i.e. linear magneto-optic, effect

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Communication Cables (AREA)

Abstract

In a fibre optic arrangement for measuring the strength of an electric current using the Faraday effect, the magnetic field surrounding the current-carrying conductors (1) influence the polarization condition of the light which travels through the core of an optical fibre (2) surrounding the conductor (1) in the form of a winding (3). A reflecting surface (5) is provided at one end (4) of the optical fibre (2) and the light enters and leaves at the other end (6). In order to exploit the advantages of the twisting of the optical fibre while reducing all other measurement errors, circular double refraction is conferred in a known manner on the optical fibre (2) by twisting it about its longitudinal axis, and the end (4) of the optical fibre (2) with the reflecting surface is arranged in the immediate vicinity of the other end (6) so that the whole optical fibre (2) forms an almost completely closed loop.
DK90910592.6T 1989-07-19 1990-07-12 Fiber optic device for measuring an electric current DK0483189T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3923804A DE3923804A1 (en) 1989-07-19 1989-07-19 FIBER OPTICAL ARRANGEMENT FOR MEASURING THE STRENGTH OF AN ELECTRIC CURRENT

Publications (1)

Publication Number Publication Date
DK0483189T3 true DK0483189T3 (en) 1994-01-31

Family

ID=6385322

Family Applications (1)

Application Number Title Priority Date Filing Date
DK90910592.6T DK0483189T3 (en) 1989-07-19 1990-07-12 Fiber optic device for measuring an electric current

Country Status (14)

Country Link
EP (1) EP0483189B1 (en)
CN (1) CN1026159C (en)
AT (1) ATE99063T1 (en)
AU (1) AU5954790A (en)
BA (1) BA97215A (en)
DD (1) DD296751A5 (en)
DE (2) DE3923804A1 (en)
DK (1) DK0483189T3 (en)
ES (1) ES2063972T3 (en)
SI (1) SI9011362B (en)
TR (1) TR26408A (en)
WO (1) WO1991001501A1 (en)
YU (1) YU47724B (en)
ZA (1) ZA905606B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9100924D0 (en) * 1991-01-16 1991-02-27 Rogers Alan J Interference-free optical-fibre current measurement
DE4115370A1 (en) * 1991-05-10 1992-11-26 Asea Brown Boveri Fibre=optic sensor for alternating electric fields or voltages - has piezoelectric element with attached optical fibre carrying two coherent light modes, and also fibre length variation detector
FR2686423B1 (en) * 1992-01-22 1996-12-13 Balteau France POLARIMETRIC BOX FOR MEASURING THE ANGLE OF FARADAY.
DE4224190B4 (en) * 1992-07-22 2007-01-18 Abb Research Ltd. Fiber optic current sensor
DE4311328A1 (en) * 1993-04-06 1994-10-13 Siemens Ag Optical measuring arrangement for measuring an electrical current with intertwined transmission lines
DE4312184A1 (en) * 1993-04-14 1994-10-20 Siemens Ag Optical measuring method for measuring an electrical alternating current with temperature compensation and device for carrying out the method
DE4312183A1 (en) * 1993-04-14 1994-10-20 Siemens Ag Optical measuring method for measuring an electrical alternating current with temperature compensation and device for carrying out the method
US5811964A (en) * 1993-10-01 1998-09-22 Siemens Aktiengelsellschaft Method and device for measuring an electrical alternating quanity with temperature compensation
DE4432146A1 (en) * 1994-09-09 1996-03-14 Siemens Ag Method and device for measuring an electrical alternating current with temperature compensation
DE4436181A1 (en) * 1994-10-10 1996-04-11 Siemens Ag Method and device for measuring an electrical variable with temperature compensation by fitting
DE19654909A1 (en) * 1996-03-08 1997-11-13 Daimler Benz Ag Magneto-optical current sensor, especially for high voltage systems
JP3488576B2 (en) * 1996-08-30 2004-01-19 株式会社東芝 Optical current transformer
DE29711683U1 (en) * 1997-07-03 1998-11-05 Felten & Guilleaume Energietechnik AG, 51063 Köln Sensor arrangement

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746983A (en) * 1970-07-20 1973-07-17 Transformatoren Union Ag Apparatus fur measuring very high currents particularly direct currents
AU1440676A (en) * 1975-06-05 1977-12-01 Gen Electric Co Ltd Magneto-optical transducers
DE2924804A1 (en) * 1979-06-20 1981-01-15 Licentia Gmbh Prevention of temperature effects on fibre optic polarisation - has detector sensing changes in light polarisation caused by variation in tensional stress due to temperature
FR2461956A1 (en) * 1979-07-24 1981-02-06 Thomson Csf INTERFEROMETRIC DEVICE FOR MEASURING ELECTRICAL CURRENT WITH OPTICAL FIBER
GB2104213A (en) * 1981-08-12 1983-03-02 Giers Electric current measurement
DE3132414A1 (en) * 1981-08-17 1983-02-24 Ernst Dr. 5600 Wuppertal Brinkmeyer Arrangement for separating backscattered light in systems having optical fibres
DE3363682D1 (en) * 1982-03-12 1986-07-03 Thomson Csf Interferometric glass fibre current measuring device

Also Published As

Publication number Publication date
DE59003976D1 (en) 1994-02-03
ZA905606B (en) 1991-06-26
WO1991001501A1 (en) 1991-02-07
TR26408A (en) 1995-03-15
SI9011362B (en) 1999-10-31
YU47724B (en) 1996-01-08
CN1051427A (en) 1991-05-15
SI9011362A (en) 1998-08-31
CN1026159C (en) 1994-10-05
DD296751A5 (en) 1991-12-12
BA97215A (en) 2001-09-14
ES2063972T3 (en) 1995-01-16
EP0483189A1 (en) 1992-05-06
DE3923804A1 (en) 1991-01-31
EP0483189B1 (en) 1993-12-22
AU5954790A (en) 1991-02-22
YU136290A (en) 1993-11-16
ATE99063T1 (en) 1994-01-15

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