A Novel Algorithm Based on Combined of Passive Techniques in Order to Islanding Detection

Recently, the penetration of Distributed Generation (DG) at medium and low voltages in utility networks is increasing in developed countries and takes special place for them worldwide. Due to the DGs advantages, including using of Renewable Energy which not polluting environment and has endless nature, the application of DGs can potentially reduce the need for traditional system expansion, controlling a potentially huge number of DGs creates a daunting new challenge for operating and controlling the network safely and efficiently. One problem that encountered with it when using with DGs, is an unwanted Islanding phenomenon. In this paper, a novel technique in order to detecting islanding conditions has been present and the proposed method based on passive methods, its performance is much more appropriate than that of previous techniques. The simulation results performed in MATLAB, clearly show improved operation of this method.