Real-time Modeling of Offshore Wind Turbines for Transient Simulation and Studies

The real-time models of offshore wind turbines are proposed in this study, which are developed in compliance with the Western Electricity Coordinating Council (WECC) standard to meet the industry requirements. In addition to basic functionalities of the generic WECC turbine model such as power curtailment and voltage ride through, the sequence current control and sequence current limit are designed for future electromagnetic transient (EMT) testing and control of offshore wind farms. Both average-value and switching detailed models are modeled in the Opal-RT simulator. Both balanced and unbalanced faults are studied to show the feasibility of the proposed turbine models. The models are validated against the WECC second-generation generic wind turbine model. The active and reactive power results for low-voltage ride through cases validated the turbine model's performance against WECC generic model in the balanced system. In addition, the models provide extended capability in mitigating the active power oscillation during unbalanced fault conditions.