G - Physics – 01 – R
Patent
G - Physics
01
R
324/29
G01R 19/00 (2006.01) G01R 15/18 (2006.01)
Patent
CA 1151242
METHOD AND APPARATUS FOR SENSING CURRENT IN HIGH VOLTAGE CONDUCTORS ABSTRACT A method and apparatus for sensing current in high voltage conductors. Alternating current carried in a high voltage conductor is sensed by a toroidal coil to produce a first low level signal representative of the time derivative of the alternat- ing current signal. Transmitter means operating at or near the potential of the conductor and remote from electrical ground receives the low level signal and in response produces a series of modulated pulses wherein at least one of the pulse parameters is a function of the amplitude of the high voltage alternating current signal. Advantageously, the transmitter may be powered by a power supply deriving power from the high voltage conductor. The pulses produced by the trans- mitter may be transmitted to a receiver operating at or near ground potential, which receiver then converts the pulses into a second low level signal representa- tive of the high voltage alternating current signal.
360520
Beattie Jay E.
Hardy Robert H.s.
Oyen Wiggs Green & Mutala Llp
Saskatchewan Power Corporation
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