jfet.13.2.13871 Islanding Detection Technique for Grid Connected AC Distribution System L. Nagarajan A. Nazar Ali S. Arunkumar Journal on Future Engineering and Technology 2230–7184 13 2 45 51 10.26634/jfet.13.2.13871 Distributed Generation(DG), AC Grid, DC Grid, Islanding, PV, Wind, Controller This paper proposes renewable energy system interface with AC distribution system. AC grid interaction improves the efficiency of the system and reduces the power demand. In this paper, issues on renewable system interfaces with AC system are analyzed theoretically. In addition, this paper proposes a protective scheme for islanding detection. In current scenario islanding condition is dangerous for grid operators who were not aware of the power from the distributed generation supplying load still connected even though there is no power from the grid. For this reason, islanding condition must be detected and immediately stopped from producing power. For that aspects, this work proposed a new current injection control technique using microcontroller to detect the islanding condition and provide human safety and equipment protection. November 2017 - January 2018 Copyright © 2018 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=13871