A Compound Scheme of Islanding Detection According to Inverter

Nowadays, with the rapid development of distributed generation, it has an increasing rate of permeation, the islanding phenomenon in grid-connected run mode brings hazards to network, electrical equipment and life safety. So, it is necessary to effectively detect the islanding condition and swiftly stop the run mode of grid-connect. In this paper, three-phase inverter and network systems was taken as an example, several existing methods were introduced and the advantages and disadvantages were compared of several existing methods by using MATLAB simulation software for the realization of the simulation, the proposed combination of a variety of detection methods for the detection program.