US Patent No: 6,493,644

Number of patents in Portfolio can not be more than 2000

A-base revenue meter with power quality features

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Abstract

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Power quality detection, monitoring, reporting, recording and communication in a revenue accuracy electrical power meter is disclosed. Transient events are detected by monitoring the wave shape of the electrical power and comparing deviations to a known threshold. Sags and Swells are detected by computing root mean square value over a rolling window and comparing the computed value with a known threshold. Harmonic frequencies and symmetrical components are quantified by a known algorithm and compared with a known threshold. Incoming waveforms are stored to memory. All recorded and computed data is moved to non-volatile storage via direct memory access transfer in the event that a power quality event jeopardizes the operating power of the meter. Further, the meter provides a power supply utilizing high and low capacitive storage banks to supply sufficient energy to survive short duration power quality events which jeopardize the meter's operating power.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
POWER MEASUREMENT LTD.SAANICHTON BRITISH COLUMBIA92

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Antoniou, Constantine A Vancouver, CA 7 169
Gunn, Colin N Victoria, CA 35 454
Jonker, Rene T Victoria, CA 23 386
Przydatek, Piotr B Victoria, CA 20 461
Teachman, Michael E Victoria, CA 37 1054

Cited Art Landscape

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* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Electro Industries/Gauge Tech (19)
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POWER MEASUREMENT LTD. (13)
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ESPI LLC (1)
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* Cited By Examiner