ES2030428T3 - Transformador magneto-optico de corriente. - Google Patents

Transformador magneto-optico de corriente.

Info

Publication number
ES2030428T3
ES2030428T3 ES198787304326T ES87304326T ES2030428T3 ES 2030428 T3 ES2030428 T3 ES 2030428T3 ES 198787304326 T ES198787304326 T ES 198787304326T ES 87304326 T ES87304326 T ES 87304326T ES 2030428 T3 ES2030428 T3 ES 2030428T3
Authority
ES
Spain
Prior art keywords
light
beams
magneto
degrees
current transformer
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.)
Expired - Lifetime
Application number
ES198787304326T
Other languages
English (en)
Inventor
Robert Charles Miller
Juris Andrejs Asars
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.)
CBS Corp
Original Assignee
Westinghouse 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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Application granted granted Critical
Publication of ES2030428T3 publication Critical patent/ES2030428T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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)
  • Measuring Magnetic Variables (AREA)

Abstract

INCLUYE UN COMPONENTE D.C. EL CUAL DOS HACES DE LUZ INCIDENTE ORTOGONALMENTE POLARIZADA SE HACEN PASAR A TRAVES DE UN ELEMENTO OPTO-MAGNETICO QUE OPERA COMO UN ROTOR DE FARADAY PARA PRODUCIR UN PRIMER Y SEGUNDO HAZ DE LUZ EMERGENTE. UN ANALIZADOR MONTADO CON LOS EJES DE POLARIZACION ORTOGONALES ESTABLECIDOS A +45 GRADOS Y -45 GRADOS DIVIDE CADA HAZ DE LUZ EMERGENTE EN DOS HACES DE LUZ DE SALIDA LOS CUALES SE CONVIERTEN EN SEÑALES ELECTRICAS A1 Y B1, A2 Y B2 EN RESPUESTA A LOS HACES DE LUZ PRIMERO Y SEGUNDO DE ENTRADA RESPECTIVAMENTE. MANTENIENDO LA SEÑAL (A+B)1 IGUAL A (A+B)2 Y MANTENIENDO IGUAL A CERO (A-B)1 + (A-B)2, UNA SEÑAL DE SALIDA (A-B)1 - (A-B)2 PROPORCIONAL A LA MAGNITUD DE LA CORRIENTE D.C. Y LIBRE DE DERIVA DEBIDA A CAMBIOS EN LAS CARACTERISTICAS DE ATENUACION DE LAS COMPONENENTES SE OBTIENE SIN LA NECESIDAD DE DIVIDIR POR UNA VARIABLE.
ES198787304326T 1986-05-22 1987-05-15 Transformador magneto-optico de corriente. Expired - Lifetime ES2030428T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/866,016 US4698497A (en) 1986-05-22 1986-05-22 Direct current magneto-optic current transformer

Publications (1)

Publication Number Publication Date
ES2030428T3 true ES2030428T3 (es) 1992-11-01

Family

ID=25346752

Family Applications (1)

Application Number Title Priority Date Filing Date
ES198787304326T Expired - Lifetime ES2030428T3 (es) 1986-05-22 1987-05-15 Transformador magneto-optico de corriente.

Country Status (4)

Country Link
US (1) US4698497A (es)
EP (1) EP0254396B1 (es)
JP (1) JPH0693006B2 (es)
ES (1) ES2030428T3 (es)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4894608A (en) * 1987-07-22 1990-01-16 Square D Company Electric current sensor using the faraday effect
JP3175935B2 (ja) * 1987-09-30 2001-06-11 株式会社東芝 光ファイバ応用センサ
US4843232A (en) * 1987-12-28 1989-06-27 Allied-Signal Inc. Optic switch and speed sensor
US4919522A (en) * 1988-02-25 1990-04-24 Geo-Centers, Inc. Optical switch having birefringent element
US4947107A (en) * 1988-06-28 1990-08-07 Sundstrand Corporation Magneto-optic current sensor
GB8817382D0 (en) * 1988-07-21 1988-08-24 Univ Essex Optical polarimeter
DE3829103A1 (de) * 1988-08-27 1990-03-01 Philips Patentverwaltung Optische sensoranordnung
US4904931A (en) * 1988-09-28 1990-02-27 Westinghouse Electric Corp. Electro-optical voltage measuring system incorporating a method and apparatus to derive the measured voltage waveform from two phase shifted electrical signals
US5124634A (en) * 1989-03-14 1992-06-23 Square D Company Ring optical current transducer
US4973899A (en) * 1989-08-24 1990-11-27 Sundstrand Corporation Current sensor and method utilizing multiple layers of thin film magneto-optic material and signal processing to make the output independent of system losses
US5109189A (en) * 1990-02-27 1992-04-28 Geo-Centers, Inc. Single crystal electro-optic sensor with three-axis measurement capability
US5057771A (en) * 1990-06-18 1991-10-15 Tetronix, Inc. Phase-locked timebase for electro-optic sampling
US5090824A (en) * 1990-07-31 1992-02-25 Geo-Centers, Inc. Fast optical switch having reduced light loss
US5149962A (en) * 1991-06-03 1992-09-22 Simmonds Precision Products, Inc. Proximity detector using faraday effect and bidirectional transmission
FR2686422B1 (fr) * 1992-01-22 1996-12-13 Balteau France Dispositif de traitement de signaux issus d'un capteur optique a effet faraday.
US5305136A (en) * 1992-03-31 1994-04-19 Geo-Centers, Inc. Optically bidirectional fast optical switch having reduced light loss
US5298964A (en) * 1992-03-31 1994-03-29 Geo-Center, Inc. Optical stress sensing system with directional measurement capabilities
US5485079A (en) 1993-03-29 1996-01-16 Matsushita Electric Industrial Co., Ltd. Magneto-optical element and optical magnetic field sensor
ATE160880T1 (de) * 1993-10-01 1997-12-15 Siemens Ag Verfahren und anordnung zum messen eines elektrischen stromes mit zwei gegenläufigen lichtsignalen unter ausnutzung des faraday- effekts
DE4342410A1 (de) * 1993-12-13 1995-06-14 Abb Research Ltd Verfahren zur magnetooptischen Strommessung und magnetooptische Strommeßeinrichtung
US5502373A (en) * 1994-06-15 1996-03-26 Eaton Corporation Magneto-optical current measurement apparatus
DE4432146A1 (de) * 1994-09-09 1996-03-14 Siemens Ag Verfahren und Vorrichtung zum Messen eines elektrischen Wechselstromes mit Temperaturkompensation
US5617022A (en) * 1995-05-01 1997-04-01 Hydro-Aire Division Of Crane Company Fiberoptic velocity transducer including dielectric coating for filtering and velocity determination
DE19544778A1 (de) * 1995-11-30 1997-06-05 Siemens Ag Verfahren und Anordnung zum Messen einer Meßgröße, insbesondere eines elektrischen Stromes, mit hoher Meßauflösung
DE19621654A1 (de) * 1996-05-30 1997-12-04 Abb Research Ltd Magneto-optischer Stromsensor
US6043648A (en) * 1996-06-14 2000-03-28 Siemens Aktiengesellschaft Method for temperature calibration of an optical magnetic field measurement array and measurement array calibrated by the method
AU1215400A (en) 1998-10-21 2000-05-08 Paul G. Duncan Methods and apparatus for optically measuring polarization rotation of optical wave fronts using rare earth iron garnets
CN1144054C (zh) 1998-12-22 2004-03-31 西门子公司 利用不同波长的光信号光学地测量电流的方法和装置
IN2014DN06730A (es) * 2012-02-23 2015-05-22 Toyota Motor Co Ltd
CN106771690B (zh) * 2015-11-19 2019-05-14 北京航空航天大学 一种固定式准光法拉第旋转器性能测定方法与装置
EP3598149A1 (en) * 2018-07-19 2020-01-22 Lumiker Aplicaciones Tecnologicas S.L. Method for measuring the current circulating through at least one conductor with optical fiber-based measuring equipment, and measuring equipment

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2067547A5 (es) * 1969-11-06 1971-08-20 Alsthom Savoisienne
CH513413A (de) * 1970-02-25 1971-09-30 Bbc Brown Boveri & Cie Verfahren zur elektronischen Auswertung modulierter Lichtbündel
CH520321A (de) * 1970-05-26 1972-03-15 Bbc Brown Boveri & Cie Verfahren und Anordnung zur Umformung des Signalflusses in einer lichtelektrischen Messeinrichtung
FR2144987A5 (es) * 1971-07-05 1973-02-16 Alsthom Savoisienne
DE2758723A1 (de) * 1977-12-29 1979-07-12 Siemens Ag Verfahren zur magnetooptischen strommessung
US4564754A (en) * 1982-03-08 1986-01-14 Hitachi, Ltd. Method and apparatus for optically measuring a current
JPS58190786A (ja) * 1982-04-30 1983-11-07 Matsushita Electric Ind Co Ltd 光フアイバ形磁界センサ
US4613811A (en) * 1984-09-04 1986-09-23 Westinghouse Electric Corp. Faraday current sensor with fiber optic compensated by temperature, degradation, and linearity
US4683421A (en) * 1985-03-29 1987-07-28 Westinghouse Electric Corp. Drift compensation technique for a magneto-optic current sensor

Also Published As

Publication number Publication date
JPH0693006B2 (ja) 1994-11-16
US4698497A (en) 1987-10-06
EP0254396A1 (en) 1988-01-27
JPS62285081A (ja) 1987-12-10
EP0254396B1 (en) 1992-03-11

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