SI9011362B - Fibre optic arrangement for measuring the strength of an electric current - Google Patents

Fibre optic arrangement for measuring the strength of an electric current Download PDF

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Publication number
SI9011362B
SI9011362B SI9011362A SI9011362A SI9011362B SI 9011362 B SI9011362 B SI 9011362B SI 9011362 A SI9011362 A SI 9011362A SI 9011362 A SI9011362 A SI 9011362A SI 9011362 B SI9011362 B SI 9011362B
Authority
SI
Slovenia
Prior art keywords
optical fibre
optical fiber
measuring
strength
electric current
Prior art date
Application number
SI9011362A
Other languages
Slovenian (sl)
Other versions
SI9011362A (en
Inventor
Dirk Peier
Holger Hirsch
Original Assignee
Mwb Messwandler-Bau Aktiengesellschaft
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 Mwb Messwandler-Bau Aktiengesellschaft filed Critical Mwb Messwandler-Bau Aktiengesellschaft
Publication of SI9011362A publication Critical patent/SI9011362A/en
Publication of SI9011362B publication Critical patent/SI9011362B/en

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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

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  • 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.

Claims (1)

PATENTNI ZAHTEVKI 1. Naprava z optičnimi vlakni za merjenje jakosti električnega toka z izkoriščanjem Faradayevega efekta, pri čemer magnetno polje, ki obkroža na visoko napetostni potencial priključeni vodnik (1), skozi katerega teče tok, vpliva na stanje polarizacije svetlobe, čigar pot vodi skozi jedro optičnega vlakna (2), ki obkroža vodnik (1) v obliki navitja (3), pri čemer je na enem koncu (4) optičnega vlakna (2) predvidena odbojna ploskev (5), medtem ko poteka na njegovem drugem koncu (6) vklop in izklop svetlobe, označena s tem, da na optično vlakno (2) vtisnemo krožni dvojni lom z zasukanjem okoli njegove podolžne osi, da je en konec (4) optičnega vlakna (2) postavljen z odbojno površino (5) v neposredno bližino njegovega drugega konca (6), tako da predstavlja celotno vlakno (2) skoraj popolnoma sklenjeno pot in da oba končna dela optičnega vlakna (2) ležita neposredno drug poleg drugega in vzporedno. Za MWB MESSVVANDLER-BAU AGA fiber optic device for measuring the strength of an electric current using the Faraday effect, wherein the magnetic field surrounding the conductor connected to the high voltage potential (1) through which the current flows affects the state of polarization of the light through which it passes. a core of optical fiber (2) surrounding the conductor (1) in the form of a winding (3), with a reflective surface (5) provided at one end (4) of the optical fiber (2) while passing at its other end (6) ) switching the light on and off, characterized in that a circular double refraction is imprinted on the optical fiber (2) by rotating it along its longitudinal axis so that one end (4) of the optical fiber (2) is placed in close proximity to the reflecting surface (5) its other end (6), so that the entire fiber (2) represents an almost completely closed path and that both end parts of the optical fiber (2) lie directly next to each other and parallel. For MWB MESSVVANDLER-BAU AG Nuernberger Strass« 1*» D-96050 BambergNuernberger Strass «1 *» D-96050 Bamberg
SI9011362A 1989-07-19 1990-07-12 Fibre optic arrangement for measuring the strength of an electric current SI9011362B (en)

Applications Claiming Priority (2)

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
YU136290A YU47724B (en) 1989-07-19 1990-07-12 OPTICAL FIBER DEVICE FOR ELECTRICAL CURRENT MEASUREMENT

Publications (2)

Publication Number Publication Date
SI9011362A SI9011362A (en) 1998-08-31
SI9011362B true SI9011362B (en) 1999-10-31

Family

ID=6385322

Family Applications (1)

Application Number Title Priority Date Filing Date
SI9011362A SI9011362B (en) 1989-07-19 1990-07-12 Fibre optic arrangement for measuring the strength of 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
JP2818302B2 (en) * 1993-10-01 1998-10-30 シーメンス アクチエンゲゼルシヤフト Method and apparatus for measuring the amount of electric alternating current 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
DE19608946A1 (en) * 1996-03-08 1997-09-18 Daimler Benz Ag Fibre coil production method from light conductor fibres for magnetooptic current sensor
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
EP0089275B1 (en) * 1982-03-12 1986-05-28 Thomson-Csf Interferometric glass fibre current measuring device

Also Published As

Publication number Publication date
CN1026159C (en) 1994-10-05
CN1051427A (en) 1991-05-15
TR26408A (en) 1995-03-15
DK0483189T3 (en) 1994-01-31
ES2063972T3 (en) 1995-01-16
YU47724B (en) 1996-01-08
DE3923804A1 (en) 1991-01-31
YU136290A (en) 1993-11-16
BA97215A (en) 2001-09-14
ZA905606B (en) 1991-06-26
DD296751A5 (en) 1991-12-12
SI9011362A (en) 1998-08-31
WO1991001501A1 (en) 1991-02-07
AU5954790A (en) 1991-02-22
DE59003976D1 (en) 1994-02-03
ATE99063T1 (en) 1994-01-15
EP0483189A1 (en) 1992-05-06
EP0483189B1 (en) 1993-12-22

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Effective date: 20050412