US 12,066,470 B2
Multichannel electrical power grid monitoring system for detecting and analyzing sensor installation and configuration errors
Douglas B. Gundel, St. Paul, MN (US); Udi Blich, Ichud (IL); and Eyal Doron, Caesarea (IL)
Assigned to 3M Innovative Properties Company, St. Paul, MN (US); and Connected Intelligence Systems Ltd., Netanya (IL)
Appl. No. 17/597,881
Filed by 3M Innovative Properties Company, St. Paul, MN (US); and Connected Intelligence Systems Ltd., Netanya (IL)
PCT Filed Jul. 30, 2020, PCT No. PCT/US2020/044242
§ 371(c)(1), (2) Date Jan. 27, 2022,
PCT Pub. No. WO2021/025947, PCT Pub. Date Feb. 11, 2021.
Claims priority of provisional application 62/882,426, filed on Aug. 2, 2019.
Prior Publication US 2022/0260616 A1, Aug. 18, 2022
Int. Cl. G01R 25/00 (2006.01); G01R 19/175 (2006.01); G01R 35/00 (2006.01)
CPC G01R 19/175 (2013.01) [G01R 35/005 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system comprising:
a plurality of sensors coupled to multi-phase power lines comprising a plurality of electrical cables that are each associated with a respective phase, the plurality of sensors configured to generate sensor data that is indicative of one or more conditions of the electrical cables; and
at least one processor configured to:
receive the sensor data;
determine, based at least in part on the sensor data, whether a sensor of the plurality of sensors is installed correctly,
determine a zero-crossing sequence of a current or a voltage of each electrical cable of the plurality of electrical cables, the zero-crossing sequence including a plurality of zero-crossing events;
determine whether the zero-crossing sequence corresponds to an expected zero-crossing sequence;
determine whether the sensor is installed correctly based at least in part on whether the zero-crossing sequence corresponds to the expected zero-crossing sequence; and
responsive to determining that the sensor is not installed correctly, perform an action.