On active anti-islanding techniques: survey

The phenomenon of feeding loads from any distributed generators (DGs) with a total disconnection utility grid at the point common coupling is called Islanding. DGs are usually independently controlled. Hence, when islanding problem occurs, electric loses control and supervision over that section power grid. Furthermore, prolonged can prevent reconnection to may cause damage due voltage frequency excursions. Therefore, detection, which also anti-islanding (AI), one most critical aspects integration DG sources into In this paper, a<strong> </strong>comprehensive survey on local AI techniques illustrated, especially active type used for improving performance regarding size non-detection zone detection speed. Extensive comparisons provided demonstrate effectiveness each technique.