US 11,940,476 B2
Three-phase power meter monitoring for star and delta configurations
Petre Minciunescu, Summerfield, NC (US); and Seyed Amir Ali Danesh, Edinburgh (GB)
Assigned to Analog Devices International Unlimited Company, Limerick (IE)
Filed by Analog Devices International Unlimited Company, Limerick (IE)
Filed on Jun. 17, 2021, as Appl. No. 17/350,812.
Application 17/350,812 is a continuation of application No. 16/355,192, filed on Mar. 15, 2019, granted, now 11,061,055.
Prior Publication US 2021/0382097 A1, Dec. 9, 2021
Int. Cl. G01R 21/133 (2006.01); G01R 15/18 (2006.01)
CPC G01R 21/133 (2013.01) [G01R 15/181 (2013.01)] 20 Claims
OG exemplary drawing
 
19. A method of determining a power measurement of a three wire or a four wire three-phase power line using a three-phase power meter, the three-phase power line comprising a plurality of conductors, the method comprising:
receiving, using a processing unit, a plurality of signals indicative of voltages between respective pairs of conductors;
determining whether the three-phase power meter is coupled to a three wire power line based on only 1) a first phase-to-phase voltage and 2) a second phase-to-phase voltage or a four wire power line based on only 1) the first phase-to-phase voltage, 2) the second phase-to-phase voltage, and 3) a phase-to-neutral voltage; and
processing the plurality of signals, using the processing unit, in order to determine the power being transferred on the three-phase power line, wherein the processing of the plurality of signals is dependent upon whether the meter is coupled to a three wire or four wire power line.