Q-axis current perturbation based active islanding detection for converter interfaced distributed generators

Thanks to the incessant developments in technology towards extracting electric power from renewable energyresources, incorporation of distributed generators has been gaining great importance in recent years. The key expedientsfor such power generation include reduction in power loss and improvement in the power quality and reliability. In spiteof the numerous advantages, it is mandatory to ascertain the island formation and shut down the distributed generators(DGs) during an unplanned islanding. An analyzing technique subsequent to an active islanding detection technique isproposed in this work for faster and accurate detection of island formation. The proposed technique is investigated forvarious operating conditions, which include source side variations, and validated for various islanding and nonislandingevents using the MATLAB R2017b/Simulink platform.

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