System and method for coordinated frequency response of an inverter-based resource to grid frequency changes

A method for operating a wind turbine generator in a wind turbine plant having a plurality of wind turbines connected to a power grid, the wind turbines having a wind turbine controller in communication with a plant-level controller, the wind turbine generator having a power converter controller, the method comprising:

• operating the wind turbine generator in grid-forming mode (GFM) control;
• with the power converter controller, receiving a first control signal derived by the wind turbine controller based on a frequency droop function performed on a detected grid frequency;
• with the wind turbine controller, receiving a second control signal derived by the plant-level controller in part based on a frequency droop function performed on the detected grid frequency at the plant-level controller;
• with the power converter controller, generating an output power actuator signal based in part on an inertial power regulator or frequency droop function performed on the detected grid frequency at the power converter controller;
• and
• applying a first compensation to the wind turbine controller, and applying a second compensation to the plant-level controller, wherein the first and second compensations reduce or eliminate changes in the control signal received by the power converter controller due to changes in the grid frequency.