PSO based droop control of inverter interfaced distributed generations

Often, there are several inverter interfaced distributed generations (IIDGs) in a Microgrid (MG). Each IIDG is connected to local loads and other IIDGs by one or several line. In this paper, an adaptive droop control method is presented that uses from line parameters between generation and consumption. Particle Swarm Optimization (PSO) is used to estimate optimal virtual line parameters. The impacts of active and reactive power fluctuations on voltage and frequency of MGs are presented. The results show that this method provides a desirable response of voltage and frequency under severe active and reactive changes in local loads.