RTDS/RSCAD Type-3 Doubly-Fed Induction Wind Turbine Generator Model

Abstract

In the future, it is expected that the European Power Grid will be integrated with several sources of renewable energy producers (mainly wind/solar), alternating their maximum/minimum production periods per year. All involved parts of the European Power System (generation and consumption units) will increasingly be connected to the network utilizing power electronic devices. This will lead to technical challenges due to a dramatic reduction of rotational inertia in the system (specifically, due to the phase-out of conventional generation units with large synchronous machines) to guarantee, despite these potential inertia issues, stability at 50 Hz. The MIGRATE Project has the goal of developing solutions to ensure grid stability, control and security and quality of supply. In this manner, a Type-3 Doubly-Fed Induction Generator (DFIG) Wind Turbine (WT) Model was implemented in the Real-Time Digital System (RTDS) Power System Simulator to help the German Transmission System Operator (TSO) TenneT GmbH to analyze such phenomena with a real-time simulation model. The wind generator model provides a representation of a complex electro-mechanical system and portraits the controls, electrical and mechanical dynamics of the wind generators for conducting Electromagnetic Transient (EMT) simulations. First, it was learned how to set up simple power systems models in RTDS. Then, a translation/resemblance of an already-existing wind generator model elaborated in Manitoba HVDC Research Centre's PSCAD software tool platform was done into the RTDS domain. The final task was to validate the RTDS models, by comparing the time responses obtained in both PSCAD and RTDS. Overall, the expected goal of the internship, which was to synthesize all the acquired data from the PSCAD models to translate and migrate such models into RSCAD models ready for the use in the RTDS, was achieved.