Abstract
This paper shows a study on Power Quality (PQ) analysis of Wind Turbines (WT) installed in wind farms. A specifically designed measurement system has been installed in three wind farms with three different types of asynchronous generators of 600 kW and 700 kW classes. – Conventional, squirrel cage induction generator directly connected and with fixed pitch (SQIG). – Wound rotor, induction generator with external variable resistance and variable pitch (VRIG). – Doubly fed asynchronous generator with external variable resistance and variable pitch (DFIG). This part shows static relationships among active and reactive power, voltage drops and harmonics. In the second part, a dynamic study has been performed, focused on transient, connection and disconnection events.
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