Apparatus and method for measuring geomagnetically induced currents (GIC) in high voltage transmission conductors
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United States of America Patent
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Nov 8, 2016
Grant Date -
Jan 14, 2016
app pub date -
Jul 8, 2014
filing date -
Jul 17, 2012
priority date (Note) -
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Abstract
An apparatus and method for measuring geomagnetically induced currents (GIC) is disclosed. The apparatus is configured to measure GICs temporarily flowing in high-voltage, 60 Hz power transmission conductors, and includes a securing means for securing the apparatus to the power transmission conductor. The apparatus further includes a flux concentrator having a toroidal ferrite core and winding wound around the core configured to capture a magnetic field from the power transmission conductor; a hall-effect sensor assembly configured to receive the magnetic field from the flux concentrator and produce a voltage signal corresponding to the magnetic field; and an electronics module configured to receive the voltage signal from the hall-effect sensor assembly, conduct measurements, and transmit the measurements to a local access point.
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