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Coordinated control and operation of DFIG and FSIG based wind farms

Foster, S. and Xu, L. and Fox, B. (2007) Coordinated control and operation of DFIG and FSIG based wind farms. In: Power Tech 2007, 2007-07-01 - 2007-07-05.

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Abstract

This paper considers a coordinated control strategy for adjacent FSIG and DFIG based wind farms whereby the reactive power output of the DFIG is prioritised over real power after a fault on the network, in order to boost the FSIG terminal voltage and improve its fault ride through capability. The issue of protection for a DFIG based wind turbine during network fault is also considered. It is seen that the large rotor currents can generally be ascribed to the small converter rating. Different protection arrangements for the converter are examined. The simulation results show that the stability margin of a FSIG can be significantly greater when there is extra reactive power compensation available from a DFIG in the vicinity.