System and method for constraining grid-induced power deviations from grid-forming inverter-based resources

A converter controller for providing grid-forming control of an inverter-based resource connected to an electrical grid, the converter controller comprising:

• at least one controller comprising at least one processor, the at least one processor configured to perform a plurality of operations, the plurality of operations comprising:
• receiving a power reference signal;
• determining a dynamic power change limit;
• determining an upper power boundary and a lower power boundary for grid-induced power deviations from a desired power operating point based, at least in part, on the power reference signal;
• determining limits for an inertial power regulator reference based, at least in part, on the upper and lower power boundaries and dynamic power change limit;
• and
• applying the limits to the inertial power regulator reference in an inertial power regulator of the inverter-based resource,
• wherein determining the dynamic power change limit further comprises:
• estimating a change in a power component of the inverter-based resource as a function of one or more grid feedbacks, the power component associated with at least one of a grid phase jump or a grid frequency drift;
• and
• estimating the dynamic power change limit based on a comparison of the change in the power component and maximum and minimum power component limits.