US 12,176,708 B2
Electrical grid control systems and methods using dynamically mapped effective impedance
Abhineet H. Parchure, Richmond, VA (US); and Stephen J. Tyler, Henrico County, VA (US)
Assigned to Dominion Energy, Inc., Richmond, VA (US)
Filed by Dominion Energy, Inc., Richmond, VA (US)
Filed on Aug. 18, 2023, as Appl. No. 18/235,640.
Application 18/235,640 is a continuation of application No. 17/220,608, filed on Apr. 1, 2021, granted, now 11,791,655.
Claims priority of provisional application 63/004,249, filed on Apr. 2, 2020.
Prior Publication US 2023/0396096 A1, Dec. 7, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H02J 13/00 (2006.01); G05B 17/02 (2006.01)
CPC H02J 13/00002 (2020.01) [G05B 17/02 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An electric power control system for an electric power grid configured to supply electric power from a supply point to a plurality of consumption locations, the system comprising:
a plurality of sensors, wherein each sensor is located at a respective one of a plurality of distribution locations on the electric power grid at or between the supply point and at least one of the plurality of consumption locations, and
wherein each sensor is configured to sense at least one component of the supplied electric power received by the sensor at the respective distribution location and to generate measurement data based on the sensed component; and
a controller configured to receive measurement data from each sensor of a subset of the plurality of sensors, wherein the subset includes more than one and fewer than all of the plurality of sensors receiving the supplied electric power, and the controller is further configured to determine a determined effective impedance for a first time period between a first sensor of the subset at the supply point and a second sensor of the subset, to associate the determined effective impedance with at least one dynamic impedance variable, to compare one or more comparison variables from the first time period to a respective comparison variable from each of a plurality of second time periods, the second time periods being less recent than the first time period, to select one of the plurality of second time periods, to update the determined effective impedance, based on the selected one of the plurality of second time periods, resulting in an updated determined effective impedance, and to provide instructions to an adjusting device based on the updated determined effective impedance, wherein the controller is configured to determine the determined effective impedance between the supply point and a plurality of other sensors of the subset, wherein the plurality of other sensors of the subset includes the second sensor, and wherein the controller is configured to determine at least one component of the supplied electric power at the plurality of other sensors based on the updated determined effective impedance;
wherein, the adjusting device is configured to adjust a component of the electric power supplied at the supply point based on the instructions.