A novel islanding detection method for three-phase photovoltaic generation systems

The increasing penetration of distributed generation (DG) into distribution systems may lead to unacceptable system conflicts. This is due to the fact that the present distribution system is designed as a passive and radial network configuration. One of these serious problems is that of the islanding phenomenon. This paper presents a new anti-islanding method that based on a periodical current magnitude variation. The proposed method leads to a voltage magnitude variation when islanding occurs in a three-phase grid-connected photovoltaic generation systems. Validation of models and control algorithms is carried out through computer simulations PSIM software.