Patent ID: 11894681
Assignee: GENERAL ELECTRIC COMPANY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G  Y | IPC G  H

Claim 20:
21. A method for damping power system oscillations in a power system network having one or more local inverter-based generators within a plant, the plant connected to a grid at a point of intersection (POI), the method comprising:
at a plant-level controller, receiving one or more grid signals having a characteristic indicative of a power system oscillation;
at the plant-level controller, generating an auxiliary signal from the grid signals;
transmitting the auxiliary signal to a local controller of one or more of the inverter-based generators;
at the local controller, using the auxiliary signal to modulate reactive power output from the inverter-based generators to improve damping of the power system oscillations;
wherein the grid signals are any one or combination of: an active or reactive power flow in one or more grid transmission lines, a current magnitude in one or more grid transmission lines, a voltage magnitude or angle at the POI, a voltage magnitude or angle at a remote bus, or a grid frequency; and
wherein a plurality of the grid signals are received at the plant-level controller, the auxiliary signal generated from a weighted combination of the plurality of the grid signals.