Modeling of IEEE-2800 Complaint Type-3 Wind Farm for Short Circuit Studies

With the rapid growth of wind generation in the United States, it is crucial to develop reliable fault models of renewable generation units and farms. This paper develops controls for a variable-speed doubly fed induction (Type-3) wind turbine generator (WTG) such that its fault response complies with the new IEEE-2800 standard requirements. The model is conceived in electromagnetic transient (EMT) platform. The paper also examines the feasibility of the fault response of such WTGs to be captured as a voltage-controlled current source (VCCS) in the sequence domain for phasor domain short circuit analysis. Additionally, since wind farms comprise numerous machines, inverters, pad-mounted transformers, and collector cables, this paper explores a physics-based hypothesis to advocate the use of an aggregated farm equivalent model by avoiding detailed EMT modeling of each component without losing accuracy in modeling the farm's fault response. The hypothesis is validated through EMT simulations of a wind farm, demonstrating how a Type-3 WTG farm can be aggregated for short circuit studies with minimal errors.