@misc{2cfa3323defd4592b73e5fc185cd471e,
title = "CGI for Impedance Characterization of Inverter-Coupled Generation",
abstract = "This presentation provides an overview of impedance characterization of inverter-coupled generation using the 7 MVA/13.2 kV grid simulator (controllable grid interface) at the National Wind Technology Center of NREL. The presentation shows how sequence impedance responses of multi-megawatt inverters and wind turbines are measured using the grid simulator. Applications of the measured impedance responses for the evaluation of dynamic interactions and high-fidelity model validation are demonstrated. The presentation also shows application of large-signal impedance theory for the prediction of harmonics generated by subsynchronous resonance (SSR) of DFIG-based Type-III wind turbines with series-compensated transmission lines. Finally, a new method for impedance-based characterization of power system frequency response is presented to enable real-time estimation of system inertia and primary frequency response (PFR), and to support control design for frequency support by inverter-coupled generation.",
keywords = "control interactions, frequency support, grid simulator, impedance characterization, inertia estimation, inverter-coupled generation, resonance",
author = "Shahil Shah and Przemyslaw Koralewicz and Vahan Gevorgian",
year = "2018",
language = "American English",
series = "Presented at the Fifth International Workshop on Grid Simulator Testing, 14-15 November 2018, Tallahassee, Florida",
type = "Other",
}