GB1119410A - Improvements relating to transmission line current measurement - Google Patents

Improvements relating to transmission line current measurement

Info

Publication number
GB1119410A
GB1119410A GB5209765A GB5209765A GB1119410A GB 1119410 A GB1119410 A GB 1119410A GB 5209765 A GB5209765 A GB 5209765A GB 5209765 A GB5209765 A GB 5209765A GB 1119410 A GB1119410 A GB 1119410A
Authority
GB
United Kingdom
Prior art keywords
polarized
current
film
analyzer
dec
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
Application number
GB5209765A
Inventor
Peter Walter Webb
Stanley William Waterman
David Allen Conti
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.)
British Aircraft Corp Ltd
Original Assignee
British Aircraft Corp Operating Ltd
British Aircraft Corp 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 British Aircraft Corp Operating Ltd, British Aircraft Corp Ltd filed Critical British Aircraft Corp Operating Ltd
Priority to GB5209765A priority Critical patent/GB1119410A/en
Publication of GB1119410A publication Critical patent/GB1119410A/en
Expired 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/032—Measuring direction or magnitude of magnetic fields or magnetic flux using magneto-optic devices, e.g. Faraday or Cotton-Mouton effect
    • G01R33/0322—Measuring direction or magnitude of magnetic fields or magnetic flux using magneto-optic devices, e.g. Faraday or Cotton-Mouton effect using the Faraday or Voigt effect

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Measuring Magnetic Variables (AREA)

Abstract

1,119,410. Current measurement; magnetometers. BRITISH AIRCRAFT CORP. (OPERATING) Ltd. Dec. 8, 1966 [Dec. 8, 1965], No. 52097/65. Headings G1A, G1N and G1U. In a system for measuring current in a high voltage power line, the magnetic field produced by the current is used to produce the Faraday effect in a film of ferro- or ferrimagnetic material adjacent the line, so as to rotate the plane of polarization of a polarized light or microwave beam passing through the material. In a system using a light beam, the beam 1 is polarized at 3 and then passed through an iron film 5 which is 0À001 cm thick and lies in the field of conductor 6. The beam after reflection at 7 is rotated again by a second passage through the film and then passed through an analyzer 9 to a photo-detector 10. The amount of rotation of the analyzer to give a minimum detected signal measures the strength of the current. Alternatively a polarized microwave beam may be received at the open end of a circular waveguide 5, Fig. 2 containing a ferrite rod (4) in the field of the conductor 6. The polarized beam is reflected from the short circuited end of the guide to pass again through the rod before being radiated to be received at an aerial (7), whereafter its rotation is analyzed.
GB5209765A 1965-12-08 1965-12-08 Improvements relating to transmission line current measurement Expired GB1119410A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5209765A GB1119410A (en) 1965-12-08 1965-12-08 Improvements relating to transmission line current measurement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5209765A GB1119410A (en) 1965-12-08 1965-12-08 Improvements relating to transmission line current measurement

Publications (1)

Publication Number Publication Date
GB1119410A true GB1119410A (en) 1968-07-10

Family

ID=10462628

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5209765A Expired GB1119410A (en) 1965-12-08 1965-12-08 Improvements relating to transmission line current measurement

Country Status (1)

Country Link
GB (1) GB1119410A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3681688A (en) * 1969-07-31 1972-08-01 Siemens Ag Measuring device for currents in high voltage conductors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3681688A (en) * 1969-07-31 1972-08-01 Siemens Ag Measuring device for currents in high voltage conductors

Similar Documents

Publication Publication Date Title
US3605013A (en) Current-measuring system utilizing faraday effect element
GB733486A (en) Elements for rotating the plane of polarization of plane polarized electromagnetic waves
US2798197A (en) Microwave bridge
GB1477688A (en) Magneto-optical current measuring devices
GB620583A (en) Improvements in or relating to ultra high frequency electrical transmission systems
US3597683A (en) Current transformer utilizing an electromagnetic wave, a faraday rotator, circular waveguides, horn antennae, and mode converters to measure current in a high voltage transmission line
GB1069470A (en) Improvements in or relating to circulators for electromagnetic wave energy
GB923178A (en) Improvements in or relating to radio apparatus for use in a continuous wave radio system
US3629703A (en) Balanced bridge optical transmission telemetering device for measuring an electrical quantity associated with a powerline with an independent optical balancing system
GB1290903A (en)
GB634400A (en) Improvements in or relating to adjustable attenuating apparatus for high frequency electromagnetic energy
ES306796A1 (en) Device for measuring the intensity of the magnetic field, especially of the mobil magnetic field. (Machine-translation by Google Translate, not legally binding)
GB1119410A (en) Improvements relating to transmission line current measurement
FR2313691A1 (en) Sensitive magneto-optical transducer - has optical fibres surrounding electric conductor so that linearly polarised light is rotated in plane in accordance with current
GB956728A (en) Waveguide hybrid junctions
GB836440A (en) Improvements in or relating to the use of ferrite members in microwave conductors
GB1194982A (en) Device for the Measurement of an Electrical Current Flowing in an Aerial High-Voltage Conductor
Badurek et al. A new type of spin-flip chopper for polarized neutron beams
GB1299183A (en) Improvements relating to surveying instruments
GB1170540A (en) Current Detector
US3178652A (en) Circulator-modulator frequency control system
GB977940A (en) Calibrator for use with a magnetic resonance spectrometer
JPS6425029A (en) Measuring device of verdet's constant
GB792387A (en) Microwave transducer
SU441525A1 (en) Device for measuring electrical parameters of dielectrics and semiconductors