  This paper presents developed real-time simulation models for offshore wind
turbine generators in compliance with industry standards. The critical control
functions such as negative sequence injection, sequence current limit, voltage
ride through, and power curtailments are designed to meet the industry
requirements for future electromagnetic transient (EMT) testing and controls of
offshore wind farms. Average-value and switching detailed models are developed
in the Opal-RT real-time simulator. Real-time capabilities of these models are
compared to show the effectiveness of the average-value model in terms of
accuracy and computation efficiency. Studies of balanced and unbalanced faults
illustrate the ability of the proposed turbine models to inject active and
reactive currents during fault events. The models are validated against the
second-generation generic wind turbine model proposed by Western Electricity
Coordinating Council (WECC). Validation results reveal that the proposed models
are aligned with the WECC generic model. In addition, the models provide an
extended capability in mitigating the active power oscillation during
unbalanced fault conditions.
