Özet:

This paper presents a self-frequency restoration by minimizing the frequency transient time response when it been applied to an autonomous microgrid configuration. At the same time, it also offers a good power sharing among the distributed generations (DGs) when the load-rated power is changed but maintains the DGs power supplies. This self-frequency restoration control is different from the conventional droop where it includes the frequency limitation condition in order to have fast frequency restoration during load changes and to ensure an accurate active and reactive power sharing. The proposed controller has been tested with two different power rating of DGs with the load during off grid condition. A simulation study has shown the effectiveness of the proposed controller when the DG units are in  plug-in/-out and under load circumstances for autonomous microgrid condition. The simulation results have exhibited the performance and robustness of the proposed controller method for recovering the frequency in very short of time and control the allowable active and reactive power accordingly to the requested power from the loads.<

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