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In this paper, we focus on a MW level diesel-wind power system consisting of a wind generator equipped with doubly fed induction generator (DFIG) and a diesel generator. Compared with the conventional diesel-wind system, the response of the system equipped with DFIG during wind fluctuation and load changes is more stable, and the ability for reactive power output of DFIG can improve the reactive power control in system operation observably. The performance of isolated diesel-wind power systems can be improved effectively by enhancing the wind generators. Analysis also shows that in this kind of system, the diesel generator terminal voltage and the upper limits for reactive power output of DFIG are important operative parameters affecting the operation performance.
Date of Conference: 28-31 March 2006