Electric power metering device and method

Details Electric power metering device and method Electric power metering device and method

G - Physics

01

R

G01R 19/00 (2006.01) G01R 21/00 (2006.01) G01R 25/00 (2006.01)

Patent

CA 2727593

The electric power metering device comprises a current sensor (2), an electronic measurement and rectifier circuit (7), a processing circuit (10) and a transmitter (11) connected to the processing circuit to transmit power messages to an electric power measurement receiver (5). An electric current integration capacitor (9) is connected to the current sensor (2) via rectifier means (8). A switch (13) is commanded by a threshold detector (12) to trigger power supply of the processing circuit (10) and the transmitter with a power accumulated in the capacitor when its electric voltage (Vc) has exceeded a predefined voltage threshold (Svc). A power message representative of a quantity of electric power is then transmitted. The power metering method comprises transmission (63) of a power message when the capacitor voltage has reached a voltage threshold (Svc).

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