Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Electrical signal parameter measurement system
Patent
1998-11-30
2000-07-25
Hoff, Marc S.
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Electrical signal parameter measurement system
702 65, G01R 2106
Patent
active
060946229
ABSTRACT:
A system for determining the service type to which an energy meter having meter elements is connected. The system includes a memory for storing reference information relating to different service types. The system determines which meter elements of the energy meter are active, and then determines relative phase angles and phase voltages of the meter elements. The relative phase angles are determined in to be in an ABC or a CBA rotation. Power quality monitoring is used in determining the phase voltages. The relative phase angles and phase voltages are compared to the reference information to determine the service type. The reference information includes services and scaling information, a nominal service voltage, a programmable potential indicator threshold, and a maximum and a minimum tolerance with respect to the nominal service voltage.
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Hemminger Rodney C.
Holdsclaw Scott T.
Hubbard Vick A.
Munday Mark L.
ABB Power T&D Company Inc.
Hoff Marc S.
Miller Craig Steven
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