Customers are calling for higher power reliability and performance from the power sector to shift for disrupted generations as a result of the development in new technologies like as fuel cells, wind generators, photovoltaic and other breakthroughs in power electronics. Due to environmental concerns, distributed generation (DG) is the primary source and aim in the electricity business. However, islanding is the idea gained after a part of a power system electrically isolates itself from the rest of the network while being powered by distributed generators. The capacity of a DG to identify the islanding is a key idea that emerges at this point. The present industry is working on the issue of isolating the distribution generator from the entire system on the fault occurrence because the failing of which might harm the DG and the loads. So every distributed generator must have been equipped with such an islanding sensing element, generally known as an anti-islanding devices, like a ROCOF relay or a vector surge relay, in order to do this.

Keywords : islanding detection, islanding, issues with islanding, methods of detection, proposed technique, conclusion, scope for future.