SUMMARYIn this paper, a two-part (i.e., normal part and reserve part) control scheme is presented for a single wind turbine generator and then extended to a set of them called wind power plant. The proposed method can be applied under the normal operation of the system or emergency condition in which the generating power drops, suddenly. In this work, initially, a novel control scheme is proposed for both single wind turbine generator and wind power plant under the normal condition. Then, the reserve part of the scheme is presented with the aim of injecting huge amount of energy to the network, and therefore improving the frequency, after an outage of a generating unit. The proposed scheme is applied to two case studies to validate the performance. Finally, a comprehensive analysis is performed, and the effects of different parameters on the system's frequency behavior are evaluated for different wind speed profiles.
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