Evaluation of Anti-Islanding Protection Methods through Simulations and Real Inverter Testing

This paper describes active and passive methods for detecting unintentional islanding, which can pose risks to both customer equipment connected to the distribution network and the electrical distribution infrastructure.The work herein introduces a realtime simulation of an unintentional islanded network and evaluates the performance of passive detection methods, under thorough testing.Finally, the paper discusses testing of actual inverters equipped with active islanding detection methods, which are more effective in identifying island operation, particularly in cases where the isolated network is balanced in terms of active and reactive power generation and consumption.