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IN2014MN01653A - - Google Patents

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Publication number
IN2014MN01653A
IN2014MN01653A IN1653MUN2014A IN2014MN01653A IN 2014MN01653 A IN2014MN01653 A IN 2014MN01653A IN 1653MUN2014 A IN1653MUN2014 A IN 1653MUN2014A IN 2014MN01653 A IN2014MN01653 A IN 2014MN01653A
Authority
IN
India
Prior art keywords
value
current
digital signal
faraday
coefficient
Prior art date
Application number
Inventor
Denis Chatrefou
Jean François MIRONNEAU
Thierry Jung
Julien Bordes
Original Assignee
Alstom Technology Ltd
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 Alstom Technology Ltd filed Critical Alstom Technology Ltd
Publication of IN2014MN01653A publication Critical patent/IN2014MN01653A/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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/20—Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments
    • G01R1/203—Resistors used for electric measuring, e.g. decade resistors standards, resistors for comparators, series resistors, shunts
    • 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
    • G01R15/08—Circuits for altering the measuring range
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
    • G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references

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)

Abstract

The subject of the present invention is a current measuring device (21) for measuring the current (ILB) flowing in a high voltage conductor (5) said device (20) being characterized in that it comprises: a Faraday sensor (1) comprising a waveguide (4) mounted around said conductor (5) said Faraday sensor (1) providing a first digital signal (si) representative of the value of said current and the value of which depends on a variable coefficient (à) termed a Faraday coefficient; a measuring shunt (21) mounted in series with said conductor (5) providing a second digital signal (S2) representative of the value of said current as a function of said shunt ratio (R(f)); calculation means (23) receiving as input the two digital signals (S1 S2) and adapted for extracting a first DC component (S1) from said first digital signal and a second DC component (S2) from said second digital signal and for calculating the value of said Faraday coefficient (à) on the basis of these components said calculation means being adapted for obtaining said current (ILB) on the basis of the value thus calculated of said Faraday coefficient and of said first digital signal (S1).
IN1653MUN2014 2012-02-10 2013-02-08 IN2014MN01653A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20120154889 EP2626711B1 (en) 2012-02-10 2012-02-10 High-bandwidth, very-high-precision device for measuring HVDC current
PCT/EP2013/052515 WO2013117682A1 (en) 2012-02-10 2013-02-08 Large bandwidth, very high precision hvdc current-measuring device

Publications (1)

Publication Number Publication Date
IN2014MN01653A true IN2014MN01653A (en) 2015-05-29

Family

ID=47747575

Family Applications (1)

Application Number Title Priority Date Filing Date
IN1653MUN2014 IN2014MN01653A (en) 2012-02-10 2013-02-08

Country Status (4)

Country Link
EP (1) EP2626711B1 (en)
CN (1) CN104246519B (en)
IN (1) IN2014MN01653A (en)
WO (1) WO2013117682A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3075386B1 (en) 2017-12-20 2020-07-10 Supergrid Institute DEVICE FOR MEASURING AN ELECTRIC AND / OR MAGNETIC FIELD ESPECIALLY IN A CONDUCTOR OF ELECTRIC ENERGY TRANSPORT

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2613838B1 (en) * 1987-04-10 1990-11-16 Alsthom DEVICE FOR MEASURING THE INTENSITY OF AN ELECTRIC CURRENT BY FARADAY EFFECT IMPLEMENTED WITHIN A SAGNAC INTERFEROMETER
CN2227341Y (en) * 1995-04-27 1996-05-15 清华大学 High-frequency large current optical fibre end instrument
DE19601727C1 (en) 1996-01-18 1997-04-30 Siemens Ag Magneto-optical current converter including Faraday sensor
JP3488576B2 (en) * 1996-08-30 2004-01-19 株式会社東芝 Optical current transformer
CN1766657A (en) * 2005-11-18 2006-05-03 中国科学院上海光学精密机械研究所 Current sensing method and device based on polarization degree demodulation
CA2731688A1 (en) 2008-07-30 2010-02-04 Abb Research Ltd High voltage ac/dc or dc/ac converter station with fiberoptic current sensor
CN101521104B (en) * 2008-11-19 2011-06-29 南瑞航天（北京）电气控制技术有限公司 Full optical fiber current transformer adopting double closed loop control

Also Published As

Publication number Publication date
CN104246519A (en) 2014-12-24
EP2626711B1 (en) 2015-03-11
EP2626711A1 (en) 2013-08-14
WO2013117682A1 (en) 2013-08-15
CN104246519B (en) 2016-12-21

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