Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Magnetic saturation
Patent
1993-07-06
1995-08-01
Wieder, Kenneth A.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Magnetic saturation
324117H, 324127, G01R 3300
Patent
active
054382564
ABSTRACT:
The present invention relates to an apparatus and a method for measuring the current in a high voltage overhead line (A). The apparatus comprises at least one device (2) for detecting and measuring the magnetic field induced by the line (A), the detector being arranged on the ground adjacent the line (A), the current being deduced by calculation.
REFERENCES:
patent: 3312898 (1967-04-01), Browne
patent: 3418575 (1968-12-01), Spindle
patent: 4539520 (1985-09-01), McBride
patent: 4799005 (1989-01-01), Fernandes
patent: 4801937 (1989-01-01), Fernandes
patent: 5146156 (1992-09-01), Marcel
M. Nakagawa "Ground Return Effects in Current Measurement of Overhead Lines" IEEE 1979 Power Engineering Society Winter Meeting.
K. H. Yearby "Power Line Harmonic Radiation in New Foundland" Journal of Atmospheric and Terrestrial Physics vol. 45 No. 6 1983.
William A. Hoppel "Bipolar Model of Electrical Environment of the Hi Voltage Direct Current Power Line" Journal of Geophysical Research vol. 90 D4 Jun. 30 1985.
Collet Michel
Thuries Edmond
GEC Alsthom T & D SA
Wardas Mark
Wieder Kenneth A.
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