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Ride-through-fault capabilities of DFIG wind farm connected to a VSC station during a DC fault

Campos-Gaona, D. and Moreno-Goytia, E.L. and Anaya-Lara, O. and Burt, G. (2011) Ride-through-fault capabilities of DFIG wind farm connected to a VSC station during a DC fault. In: 9th IET International Conference on AC and DC Power Transmission (ACDC 2010). IET, Stevenage. ISBN 9781849193085

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Abstract

This work analyzes the capabilities of ride-through-fault (RTF) of a double-fed induction machine (DFIG), -based wind farm connected to a VSC-, in case of a fault in the DC side of the VSC. The modelling of the DFIG wind turbine takes into account key aspects that intervene in succeeding the fault ride-through such as the power capacity of its electronic converter and its control scheme. As result a better understanding of the behaviour and capabilities of such system to perform a successful RTF is achieved. This work also analyzes the behaviour of the momentary islanding of the system composed by the wind farm and the ac filters of the VSC station. Using that information, a novel control scheme for the offshore VSC station is proposed in order to enhance RTF capabilities of the wind farm in case of such DC faults.